memory efficient - Page 622

?11gR2 RAC???ASM DISK Path????

- by Liu Maclean(???)

????T.askmaclean.com???????11gR2?ASM DISK?????,??????: aix 6.1,grid 11.2.0.3+asm11.2.0.3+rac ???????????aix????????mpio,??diskgroup ?????veritas dmp???,?????asm?disk_strings=/dev/vx/rdmp/*,crs/asm??????????????/dev/vx/rdmp/?????,?????????diskgroup??? crs???????:2012-07-13 15:07:29.748: [ GPNP][1286]clsgpnp_profileCallUrlInt: [at clsgpnp.c:2108 clsgpnp_profileCallUrlInt] get-profile call to url “ipc://GPNPD_ggtest1? disco “” [f=0 claimed- host: cname: seq: auth:]2012-07-13 15:07:29.762: [ GPNP][1286]clsgpnp_profileCallUrlInt: [at clsgpnp.c:2236 clsgpnp_profileCallUrlInt] Result: (0) CLSGPNP_OK. Successful get-profile CALL to remote “ipc://GPNPD_ggtest1? disco “”2012-07-13 15:07:29.762: [ CSSD][1286]clssnmReadDiscoveryProfile: voting file discovery string(/dev/vx/rdmp/*)2012-07-13 15:07:29.762: [ CSSD][1286]clssnmvDDiscThread: using discovery string /dev/vx/rdmp/* for initial discovery2012-07-13 15:07:29.762: [ SKGFD][1286]Discovery with str:/dev/vx/rdmp/*: 2012-07-13 15:07:29.762: [ SKGFD][1286]UFS discovery with :/dev/vx/rdmp/*: 2012-07-13 15:07:29.769: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_919: 2012-07-13 15:07:29.770: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_212: 2012-07-13 15:07:29.770: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_211: 2012-07-13 15:07:29.770: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_210: 2012-07-13 15:07:29.770: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_209: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_181: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/v_df8000_180: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/disk_3: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/disk_2: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/disk_1: 2012-07-13 15:07:29.771: [ SKGFD][1286]Fetching UFS disk :/dev/vx/rdmp/disk_0: 2012-07-13 15:07:29.771: [ SKGFD][1286]OSS discovery with :/dev/vx/rdmp/*: 2012-07-13 15:07:29.771: [ SKGFD][1286]Handle 1115e7510 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_916: 2012-07-13 15:07:29.772: [ SKGFD][1286]Handle 1118758b0 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_912: 2012-07-13 15:07:29.773: [ SKGFD][1286]Handle 1118d9cf0 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_908: 2012-07-13 15:07:29.773: [ SKGFD][1286]Handle 1118da450 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_904: 2012-07-13 15:07:29.773: [ SKGFD][1286]Handle 1118dad70 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_903: 2012-07-13 15:07:29.802: [ CLSF][1286]checksum failed for disk:/dev/vx/rdmp/v_df8000_916:2012-07-13 15:07:29.803: [ SKGFD][1286]Lib :UFS:: closing handle 1115e7510 for disk :/dev/vx/rdmp/v_df8000_916: 2012-07-13 15:07:29.803: [ SKGFD][1286]Lib :UFS:: closing handle 1118758b0 for disk :/dev/vx/rdmp/v_df8000_912: 2012-07-13 15:07:29.804: [ SKGFD][1286]Handle 1115e6710 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_202: 2012-07-13 15:07:29.808: [ SKGFD][1286]Handle 1115e7030 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_201: 2012-07-13 15:07:29.809: [ SKGFD][1286]Handle 1115e7ad0 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_200: 2012-07-13 15:07:29.809: [ SKGFD][1286]Handle 1118733f0 from lib :UFS:: for disk :/dev/vx/rdmp/v_df8000_199: 2012-07-13 15:07:29.816: [ CLSF][1286]checksum failed for disk:/dev/vx/rdmp/v_df8000_186:2012-07-13 15:07:29.816: [ SKGFD][1286]Lib :UFS:: closing handle 1118de5d0 for disk :/dev/vx/rdmp/v_df8000_186: 2012-07-13 15:07:29.816: [ CSSD][1286]clssnmvDiskVerify: Successful discovery of 0 disks2012-07-13 15:07:29.816: [ CSSD][1286]clssnmCompleteInitVFDiscovery: Completing initial voting file discovery2012-07-13 15:07:29.816: [ CSSD][1286]clssnmvFindInitialConfigs: No voting files found2012-07-13 15:07:29.816: [ CSSD][1286](:CSSNM00070:)clssnmCompleteInitVFDiscovery: Voting file not found. Retrying discovery in 15 seconds2012-07-13 15:07:30.169: [ CSSD][1029]clssgmExecuteClientRequest(): type(37) size(80) only connect and exit messages are allowed before lease acquisition proc(1115e4870) client(0) ??????ASM DISK PATH???????,????11gR2 RAC+ASM????,??CRS??????,????crsctl start crs -excl -nocrs???????CSS???ASM??, ???????(clssnmCompleteInitVFDiscovery: Voting file not found),????Voteing file????????????????? ?????????,???????11gR2 RAC+ASM??ASM DISK??: 1.?????????ASM DISK?????,??????UDEV????????,???UDEV????ASM DISK?/dev/asm-disk* ??? /dev/rasm-disk*???, ??????udev rule??????: [grid@maclean1 ~]$ export ORACLE_HOME=/g01/grid/app/11.2.0/grid [grid@maclean1 ~]$ /g01/grid/app/11.2.0/grid/bin/sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Sun Jul 15 04:09:28 2012 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> show parameter diskstri NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ asm_diskstring string /dev/asm* ??????ASM?????asm_diskstring ?/dev/asm*, ???root????UDEV RULE?? : [root@maclean1 rules.d]# cp 99-oracle-asmdevices.rules 99-oracle-asmdevices.rules.bak [root@maclean1 rules.d]# vi 99-oracle-asmdevices.rules [root@maclean1 rules.d]# cat 99-oracle-asmdevices.rules KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB09cadb31-cfbea255_", NAME="rasm-diskb", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB5f097069-59efb82f_", NAME="rasm-diskc", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB4e1a81c0-20478bc4_", NAME="rasm-diskd", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VBdcce9285-b13c5a27_", NAME="rasm-diske", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB82effe1a-dbca7dff_", NAME="rasm-diskf", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB950d279f-c581cb51_", NAME="rasm-diskg", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB14400d81-651672d7_", NAME="rasm-diskh", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="SATA_VBOX_HARDDISK_VB31b1237b-78aa22bb_", NAME="rasm-diski", OWNER="grid", GROUP="asmadmin", MODE="0660" ???????99-oracle-asmdevices.rules?UDEV RULE????,??????????/dev/rasm-disk*???,??????ASM DISK???, ????????????????RAC CRS??????? ??????votedisk?ocr ????: [root@maclean1 rules.d]# /g01/grid/app/11.2.0/grid/bin/crsctl query css votedisk ## STATE File Universal Id File Name Disk group -- ----- ----------------- --------- --------- 1. ONLINE 6896bfc3d1464f9fbf0ea9df87e023ad (/dev/asm-diskb) [SYSTEMDG] 2. ONLINE 58eb81b656084ff2bfd315d9badd08b7 (/dev/asm-diskc) [SYSTEMDG] 3. ONLINE 6bf7324625c54f3abf2c942b1e7f70d9 (/dev/asm-diskd) [SYSTEMDG] 4. ONLINE 43ad8ae20c354f5ebf7083bc30bf94cc (/dev/asm-diske) [SYSTEMDG] 5. ONLINE 4c225359d51b4f93bfba01080664b3d7 (/dev/asm-diskf) [SYSTEMDG] Located 5 voting disk(s). [root@maclean1 rules.d]# /g01/grid/app/11.2.0/grid/bin/ocrcheck Status of Oracle Cluster Registry is as follows : Version : 3 Total space (kbytes) : 262120 Used space (kbytes) : 2844 Available space (kbytes) : 259276 ID : 879001605 Device/File Name : +SYSTEMDG Device/File integrity check succeeded Device/File not configured Device/File not configured Device/File not configured Device/File not configured Cluster registry integrity check succeeded Logical corruption check succeeded ??votedisk file?????????ASM DISK,?????????crsctl replace votedisk, ??????LINUX OS: [root@maclean1 rules.d]# init 6 rebooting ............ [root@maclean1 dev]# ls -l *asm* brw-rw---- 1 grid asmadmin 8, 16 Jul 15 04:15 rasm-diskb brw-rw---- 1 grid asmadmin 8, 32 Jul 15 04:15 rasm-diskc brw-rw---- 1 grid asmadmin 8, 48 Jul 15 04:15 rasm-diskd brw-rw---- 1 grid asmadmin 8, 64 Jul 15 04:15 rasm-diske brw-rw---- 1 grid asmadmin 8, 80 Jul 15 04:15 rasm-diskf brw-rw---- 1 grid asmadmin 8, 96 Jul 15 04:15 rasm-diskg brw-rw---- 1 grid asmadmin 8, 112 Jul 15 04:15 rasm-diskh brw-rw---- 1 grid asmadmin 8, 128 Jul 15 04:15 rasm-diski ??????????/dev/rasm-disk*?ASM DISK,??ASM??????css?????/dev/asm*?????ASM DISK,??????????????ASM DISK: more /g01/grid/app/11.2.0/grid/log/maclean1/cssd/ocssd.log 2012-07-15 04:17:45.208: [ SKGFD][1099548992]Discovery with str:/dev/asm*: 2012-07-15 04:17:45.208: [ SKGFD][1099548992]UFS discovery with :/dev/asm*: 2012-07-15 04:17:45.208: [ SKGFD][1099548992]OSS discovery with :/dev/asm*: 2012-07-15 04:17:45.208: [ CSSD][1099548992]clssnmvDiskVerify: Successful discovery of 0 disks 2012-07-15 04:17:45.208: [ CSSD][1099548992]clssnmCompleteInitVFDiscovery: Completing initial voting file discovery 2012-07-15 04:17:45.208: [ CSSD][1099548992]clssnmvFindInitialConfigs: No voting files found 2012-07-15 04:17:45.208: [ CSSD][1099548992](:CSSNM00070:)clssnmCompleteInitVFDiscovery: Voting file not found. Retrying discovery in 15 seconds 2012-07-15 04:17:45.251: [ CSSD][1096661312]clssgmExecuteClientRequest(): type(37) size(80) only connect and exit messages are allowed before lease acquisition proc(0x26a8ba0) client((nil)) 2012-07-15 04:17:45.251: [ CSSD][1096661312]clssgmDeadProc: proc 0x26a8ba0 2012-07-15 04:17:45.251: [ CSSD][1096661312]clssgmDestroyProc: cleaning up proc(0x26a8ba0) con(0xfe6) skgpid ospid 3751 with 0 clients, refcount 0 2012-07-15 04:17:45.252: [ CSSD][1096661312]clssgmDiscEndpcl: gipcDestroy 0xfe6 2012-07-15 04:17:45.829: [ CSSD][1096661312]clssscSelect: cookie accept request 0x2318ea0 2012-07-15 04:17:45.829: [ CSSD][1096661312]clssgmAllocProc: (0x2659480) allocated 2012-07-15 04:17:45.830: [ CSSD][1096661312]clssgmClientConnectMsg: properties of cmProc 0x2659480 - 1,2,3,4,5 2012-07-15 04:17:45.830: [ CSSD][1096661312]clssgmClientConnectMsg: Connect from con(0x114e) proc(0x2659480) pid(3751) version 11:2:1:4, properties: 1,2,3,4,5 2012-07-15 04:17:45.830: [ CSSD][1096661312]clssgmClientConnectMsg: msg flags 0x0000 2012-07-15 04:17:45.939: [ CSSD][1096661312]clssscSelect: cookie accept request 0x253ddd0 2012-07-15 04:17:45.939: [ CSSD][1096661312]clssscevtypSHRCON: getting client with cmproc 0x253ddd0 2012-07-15 04:17:45.939: [ CSSD][1096661312]clssgmRegisterClient: proc(3/0x253ddd0), client(61/0x26877b0) 2012-07-15 04:17:45.939: [ CSSD][1096661312]clssgmExecuteClientRequest(): type(6) size(684) only connect and exit messages are allowed before lease acquisition proc(0x253ddd0) client(0x26877b0) 2012-07-15 04:17:45.939: [ CSSD][1096661312]clssgmDiscEndpcl: gipcDestroy 0x1174 2012-07-15 04:17:46.070: [ CSSD][1096661312]clssscSelect: cookie accept request 0x26368a0 2012-07-15 04:17:46.070: [ CSSD][1096661312]clssscevtypSHRCON: getting client with cmproc 0x26368a0 2012-07-15 04:17:46.070: [ CSSD][1096661312]clssgmRegisterClient: proc(5/0x26368a0), client(50/0x26877b0) ??11gR2?CRS?????ASM,??ocr???ASM?,??ASM???????,???CRS?????????: [root@maclean1 ~]# crsctl check has CRS-4638: Oracle High Availability Services is online [root@maclean1 ~]# crsctl check crs CRS-4638: Oracle High Availability Services is online CRS-4535: Cannot communicate with Cluster Ready Services CRS-4530: Communications failure contacting Cluster Synchronization Services daemon CRS-4534: Cannot communicate with Event Manager 2. ?????ASM DISK PATH???????,?????????????CRS: ??????OHASD??: [root@maclean1 ~]# crsctl stop has -f CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'maclean1' CRS-2673: Attempting to stop 'ora.mdnsd' on 'maclean1' CRS-2673: Attempting to stop 'ora.crf' on 'maclean1' CRS-2677: Stop of 'ora.mdnsd' on 'maclean1' succeeded CRS-2677: Stop of 'ora.crf' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'maclean1' CRS-2677: Stop of 'ora.gipcd' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'maclean1' CRS-2677: Stop of 'ora.gpnpd' on 'maclean1' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'maclean1' has completed CRS-4133: Oracle High Availability Services has been stopped. 3. ?-excl -nocrs????CRS,?????ASM ???????CRS??: [root@maclean1 ~]# crsctl start crs -excl -nocrs CRS-4123: Oracle High Availability Services has been started. CRS-2672: Attempting to start 'ora.mdnsd' on 'maclean1' CRS-2676: Start of 'ora.mdnsd' on 'maclean1' succeeded CRS-2672: Attempting to start 'ora.gpnpd' on 'maclean1' CRS-2676: Start of 'ora.gpnpd' on 'maclean1' succeeded CRS-2672: Attempting to start 'ora.cssdmonitor' on 'maclean1' CRS-2672: Attempting to start 'ora.gipcd' on 'maclean1' CRS-2676: Start of 'ora.cssdmonitor' on 'maclean1' succeeded CRS-2676: Start of 'ora.gipcd' on 'maclean1' succeeded CRS-2672: Attempting to start 'ora.cssd' on 'maclean1' CRS-2672: Attempting to start 'ora.diskmon' on 'maclean1' CRS-2676: Start of 'ora.diskmon' on 'maclean1' succeeded CRS-2676: Start of 'ora.cssd' on 'maclean1' succeeded CRS-2679: Attempting to clean 'ora.cluster_interconnect.haip' on 'maclean1' CRS-2672: Attempting to start 'ora.ctssd' on 'maclean1' CRS-2681: Clean of 'ora.cluster_interconnect.haip' on 'maclean1' succeeded CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'maclean1' CRS-2676: Start of 'ora.ctssd' on 'maclean1' succeeded CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'maclean1' succeeded CRS-2672: Attempting to start 'ora.asm' on 'maclean1' CRS-2676: Start of 'ora.asm' on 'maclean1' succeeded #??????CRS_HOME???ORACLE_BASE?777??,??????? [root@maclean1 ~]# chmod 777 /g01 4.??ASM???disk_strings????ASM DISK PATH??: [root@maclean1 ~]# su - grid [grid@maclean1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Sun Jul 15 04:40:40 2012 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> alter system set asm_diskstring='/dev/rasm*'; System altered. SQL> alter diskgroup systemdg mount; Diskgroup altered. SQL> create spfile from memory; File created. SQL> startup force mount; ORA-32004: obsolete or deprecated parameter(s) specified for ASM instance ASM instance started Total System Global Area 283930624 bytes Fixed Size 2227664 bytes Variable Size 256537136 bytes ASM Cache 25165824 bytes ASM diskgroups mounted SQL> show parameter spfile NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ spfile string /g01/grid/app/11.2.0/grid/dbs/ spfile+ASM1.ora SQL> show parameter disk NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ asm_diskgroups string SYSTEMDG asm_diskstring string /dev/rasm* SQL> create pfile from spfile; File created. SQL> create spfile='+SYSTEMDG' from pfile; File created. SQL> startup force; ORA-32004: obsolete or deprecated parameter(s) specified for ASM instance ASM instance started Total System Global Area 283930624 bytes Fixed Size 2227664 bytes Variable Size 256537136 bytes ASM Cache 25165824 bytes ASM diskgroups mounted SQL> show parameter spfile NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ spfile string +SYSTEMDG/maclean-cluster/asmp arameterfile/registry.253.7886 82933 ???????asm_diskstring ,????ASM DISKGROUP??SPFILE , ??ASM?????SPFILE?????????????????? 5. crsctl replace votedisk ???votedisk????: [root@maclean1 ~]# crsctl replace votedisk +systemdg Successful addition of voting disk 864a00efcfbe4f42bfd0f4f6b60472a0. Successful addition of voting disk ab14d6e727614f29bf53b9870052a5c8. Successful addition of voting disk 754c03c168854f46bf2daee7287bf260. Successful addition of voting disk 9ed58f37f3e84f28bfcd9b101f2af9f3. Successful addition of voting disk 4ce7b7c682364f12bf4df5ce1fb7814e. Successfully replaced voting disk group with +systemdg. CRS-4266: Voting file(s) successfully replaced [root@maclean1 ~]# crsctl query css votedisk ## STATE File Universal Id File Name Disk group -- ----- ----------------- --------- --------- 1. ONLINE 864a00efcfbe4f42bfd0f4f6b60472a0 (/dev/rasm-diskb) [SYSTEMDG] 2. ONLINE ab14d6e727614f29bf53b9870052a5c8 (/dev/rasm-diskc) [SYSTEMDG] 3. ONLINE 754c03c168854f46bf2daee7287bf260 (/dev/rasm-diskd) [SYSTEMDG] 4. ONLINE 9ed58f37f3e84f28bfcd9b101f2af9f3 (/dev/rasm-diske) [SYSTEMDG] 5. ONLINE 4ce7b7c682364f12bf4df5ce1fb7814e (/dev/rasm-diskf) [SYSTEMDG] Located 5 voting disk(s). [root@maclean1 ~]# ocrcheck Status of Oracle Cluster Registry is as follows : Version : 3 Total space (kbytes) : 262120 Used space (kbytes) : 2844 Available space (kbytes) : 259276 ID : 879001605 Device/File Name : +SYSTEMDG Device/File integrity check succeeded Device/File not configured Device/File not configured Device/File not configured Device/File not configured Cluster registry integrity check succeeded Logical corruption check succeeded ??replace?votedisk??? ASM DISK?,???votedisk?OCR??????? 6.??CRS??: [root@maclean1 ~]# crsctl stop crs CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'maclean1' CRS-2673: Attempting to stop 'ora.mdnsd' on 'maclean1' CRS-2673: Attempting to stop 'ora.ctssd' on 'maclean1' CRS-2673: Attempting to stop 'ora.asm' on 'maclean1' CRS-2677: Stop of 'ora.mdnsd' on 'maclean1' succeeded CRS-2677: Stop of 'ora.asm' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'maclean1' CRS-2677: Stop of 'ora.ctssd' on 'maclean1' succeeded CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.cssd' on 'maclean1' CRS-2677: Stop of 'ora.cssd' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'maclean1' CRS-2677: Stop of 'ora.gipcd' on 'maclean1' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'maclean1' CRS-2677: Stop of 'ora.gpnpd' on 'maclean1' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'maclean1' has completed CRS-4133: Oracle High Availability Services has been stopped. [root@maclean1 ~]# crsctl stat res -t -------------------------------------------------------------------------------- NAME TARGET STATE SERVER STATE_DETAILS -------------------------------------------------------------------------------- Local Resources -------------------------------------------------------------------------------- ora.BACKUPDG.dg ONLINE ONLINE maclean1 ora.DATA.dg ONLINE ONLINE maclean1 ora.LISTENER.lsnr ONLINE ONLINE maclean1 ora.SYSTEMDG.dg ONLINE ONLINE maclean1 ora.asm ONLINE ONLINE maclean1 Started ora.gsd OFFLINE OFFLINE maclean1 ora.net1.network ONLINE ONLINE maclean1 ora.ons ONLINE ONLINE maclean1 -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.LISTENER_SCAN1.lsnr 1 ONLINE ONLINE maclean1 ora.cvu 1 ONLINE ONLINE maclean1 ora.maclean1.vip 1 ONLINE ONLINE maclean1 ora.maclean2.vip 1 ONLINE INTERMEDIATE maclean1 FAILED OVER ora.oc4j 1 ONLINE OFFLINE STARTING ora.prod.db 1 ONLINE OFFLINE Instance Shutdown,S TARTING 2 ONLINE OFFLINE ora.scan1.vip 1 ONLINE ONLINE maclean1 ???????ASM?????SPFILE,???????????????,?????CRS??????? ??11gR2 RAC+ASM?????????,????????????????ASM DISK PATH?????????, ???????????????,????!

Read the article

Replacing instructions in a method's MethodBody

- by Alix

Hi, (First of all, this is a very lengthy post, but don't worry: I've already implemented all of it, I'm just asking your opinion.) I'm having trouble implementing the following; I'd appreciate some help: I get a Type as parameter. I define a subclass using reflection. Notice that I don't intend to modify the original type, but create a new one. I create a property per field of the original class, like so: public class OriginalClass { private int x; } public class Subclass : OriginalClass { private int x; public int X { get { return x; } set { x = value; } } } For every method of the superclass, I create an analogous method in the subclass. The method's body must be the same except that I replace the instructions ldfld x with callvirt this.get_X, that is, instead of reading from the field directly I call the get accessor. I'm having trouble with step 4. I know you're not supposed to manipulate code like this, but I really need to. Here's what I've tried: Attempt #1: Use Mono.Cecil. This would allow me to parse the body of the method into human-readable Instructions, and easily replace instructions. However, the original type isn't in a .dll file, so I can't find a way to load it with Mono.Cecil. Writing the type to a .dll, then load it, then modify it and write the new type to disk (which I think is the way you create a type with Mono.Cecil), and then load it seems like a huge overhead. Attempt #2: Use Mono.Reflection. This would also allow me to parse the body into Instructions, but then I have no support for replacing instructions. I've implemented a very ugly and inefficient solution using Mono.Reflection, but it doesn't yet support methods that contain try-catch statements (although I guess I can implement this) and I'm concerned that there may be other scenarios in which it won't work, since I'm using the ILGenerator in a somewhat unusual way. Also, it's very ugly ;). Here's what I've done: private void TransformMethod(MethodInfo methodInfo) { // Create a method with the same signature. ParameterInfo[] paramList = methodInfo.GetParameters(); Type[] args = new Type[paramList.Length]; for (int i = 0; i < args.Length; i++) { args[i] = paramList[i].ParameterType; } MethodBuilder methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, methodInfo.Attributes, methodInfo.ReturnType, args); ILGenerator ilGen = methodBuilder.GetILGenerator(); // Declare the same local variables as in the original method. IList<LocalVariableInfo> locals = methodInfo.GetMethodBody().LocalVariables; foreach (LocalVariableInfo local in locals) { ilGen.DeclareLocal(local.LocalType); } // Get readable instructions. IList<Instruction> instructions = methodInfo.GetInstructions(); // I first need to define labels for every instruction in case I // later find a jump to that instruction. Once the instruction has // been emitted I cannot label it, so I'll need to do it in advance. // Since I'm doing a first pass on the method's body anyway, I could // instead just create labels where they are truly needed, but for // now I'm using this quick fix. Dictionary<int, Label> labels = new Dictionary<int, Label>(); foreach (Instruction instr in instructions) { labels[instr.Offset] = ilGen.DefineLabel(); } foreach (Instruction instr in instructions) { // Mark this instruction with a label, in case there's a branch // instruction that jumps here. ilGen.MarkLabel(labels[instr.Offset]); // If this is the instruction that I want to replace (ldfld x)... if (instr.OpCode == OpCodes.Ldfld) { // ...get the get accessor for the accessed field (get_X()) // (I have the accessors in a dictionary; this isn't relevant), MethodInfo safeReadAccessor = dataMembersSafeAccessors[((FieldInfo) instr.Operand).Name][0]; // ...instead of emitting the original instruction (ldfld x), // emit a call to the get accessor, ilGen.Emit(OpCodes.Callvirt, safeReadAccessor); // Else (it's any other instruction), reemit the instruction, unaltered. } else { Reemit(instr, ilGen, labels); } } } And here comes the horrible, horrible Reemit method: private void Reemit(Instruction instr, ILGenerator ilGen, Dictionary<int, Label> labels) { // If the instruction doesn't have an operand, emit the opcode and return. if (instr.Operand == null) { ilGen.Emit(instr.OpCode); return; } // Else (it has an operand)... // If it's a branch instruction, retrieve the corresponding label (to // which we want to jump), emit the instruction and return. if (instr.OpCode.FlowControl == FlowControl.Branch) { ilGen.Emit(instr.OpCode, labels[Int32.Parse(instr.Operand.ToString())]); return; } // Otherwise, simply emit the instruction. I need to use the right // Emit call, so I need to cast the operand to its type. Type operandType = instr.Operand.GetType(); if (typeof(byte).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (byte) instr.Operand); else if (typeof(double).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (double) instr.Operand); else if (typeof(float).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (float) instr.Operand); else if (typeof(int).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (int) instr.Operand); ... // you get the idea. This is a pretty long method, all like this. } Branch instructions are a special case because instr.Operand is SByte, but Emit expects an operand of type Label. Hence the need for the Dictionary labels. As you can see, this is pretty horrible. What's more, it doesn't work in all cases, for instance with methods that contain try-catch statements, since I haven't emitted them using methods BeginExceptionBlock, BeginCatchBlock, etc, of ILGenerator. This is getting complicated. I guess I can do it: MethodBody has a list of ExceptionHandlingClause that should contain the necessary information to do this. But I don't like this solution anyway, so I'll save this as a last-resort solution. Attempt #3: Go bare-back and just copy the byte array returned by MethodBody.GetILAsByteArray(), since I only want to replace a single instruction for another single instruction of the same size that produces the exact same result: it loads the same type of object on the stack, etc. So there won't be any labels shifting and everything should work exactly the same. I've done this, replacing specific bytes of the array and then calling MethodBuilder.CreateMethodBody(byte[], int), but I still get the same error with exceptions, and I still need to declare the local variables or I'll get an error... even when I simply copy the method's body and don't change anything. So this is more efficient but I still have to take care of the exceptions, etc. Sigh. Here's the implementation of attempt #3, in case anyone is interested: private void TransformMethod(MethodInfo methodInfo, Dictionary<string, MethodInfo[]> dataMembersSafeAccessors, ModuleBuilder moduleBuilder) { ParameterInfo[] paramList = methodInfo.GetParameters(); Type[] args = new Type[paramList.Length]; for (int i = 0; i < args.Length; i++) { args[i] = paramList[i].ParameterType; } MethodBuilder methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, methodInfo.Attributes, methodInfo.ReturnType, args); ILGenerator ilGen = methodBuilder.GetILGenerator(); IList<LocalVariableInfo> locals = methodInfo.GetMethodBody().LocalVariables; foreach (LocalVariableInfo local in locals) { ilGen.DeclareLocal(local.LocalType); } byte[] rawInstructions = methodInfo.GetMethodBody().GetILAsByteArray(); IList<Instruction> instructions = methodInfo.GetInstructions(); int k = 0; foreach (Instruction instr in instructions) { if (instr.OpCode == OpCodes.Ldfld) { MethodInfo safeReadAccessor = dataMembersSafeAccessors[((FieldInfo) instr.Operand).Name][0]; // Copy the opcode: Callvirt. byte[] bytes = toByteArray(OpCodes.Callvirt.Value); for (int m = 0; m < OpCodes.Callvirt.Size; m++) { rawInstructions[k++] = bytes[put.Length - 1 - m]; } // Copy the operand: the accessor's metadata token. bytes = toByteArray(moduleBuilder.GetMethodToken(safeReadAccessor).Token); for (int m = instr.Size - OpCodes.Ldfld.Size - 1; m >= 0; m--) { rawInstructions[k++] = bytes[m]; } // Skip this instruction (do not replace it). } else { k += instr.Size; } } methodBuilder.CreateMethodBody(rawInstructions, rawInstructions.Length); } private static byte[] toByteArray(int intValue) { byte[] intBytes = BitConverter.GetBytes(intValue); if (BitConverter.IsLittleEndian) Array.Reverse(intBytes); return intBytes; } private static byte[] toByteArray(short shortValue) { byte[] intBytes = BitConverter.GetBytes(shortValue); if (BitConverter.IsLittleEndian) Array.Reverse(intBytes); return intBytes; } (I know it isn't pretty. Sorry. I put it quickly together to see if it would work.) I don't have much hope, but can anyone suggest anything better than this? Sorry about the extremely lengthy post, and thanks.

Read the article

Parsing concatenated, non-delimited XML messages from TCP-stream using C#

- by thaller

I am trying to parse XML messages which are send to my C# application over TCP. Unfortunately, the protocol can not be changed and the XML messages are not delimited and no length prefix is used. Moreover the character encoding is not fixed but each message starts with an XML declaration <?xml>. The question is, how can i read one XML message at a time, using C#. Up to now, I tried to read the data from the TCP stream into a byte array and use it through a MemoryStream. The problem is, the buffer might contain more than one XML messages or the first message may be incomplete. In these cases, I get an exception when trying to parse it with XmlReader.Read or XmlDocument.Load, but unfortunately the XmlException does not really allow me to distinguish the problem (except parsing the localized error string). I tried using XmlReader.Read and count the number of Element and EndElement nodes. That way I know when I am finished reading the first, entire XML message. However, there are several problems. If the buffer does not yet contain the entire message, how can I distinguish the XmlException from an actually invalid, non-well-formed message? In other words, if an exception is thrown before reading the first root EndElement, how can I decide whether to abort the connection with error, or to collect more bytes from the TCP stream? If no exception occurs, the XmlReader is positioned at the start of the root EndElement. Casting the XmlReader to IXmlLineInfo gives me the current LineNumber and LinePosition, however it is not straight forward to get the byte position where the EndElement really ends. In order to do that, I would have to convert the byte array into a string (with the encoding specified in the XML declaration), seek to LineNumber,LinePosition and convert that back to the byte offset. I try to do that with StreamReader.ReadLine, but the stream reader gives no public access to the current byte position. All this seams very inelegant and non robust. I wonder if you have ideas for a better solution. Thank you. EDIT: I looked around and think that the situation is as follows (I might be wrong, corrections are welcome): I found no method so that the XmlReader can continue parsing a second XML message (at least not, if the second message has an XmlDeclaration). XmlTextReader.ResetState could do something similar, but for that I would have to assume the same encoding for all messages. Therefor I could not connect the XmlReader directly to the TcpStream. After closing the XmlReader, the buffer is not positioned at the readers last position. So it is not possible to close the reader and use a new one to continue with the next message. I guess the reason for this is, that the reader could not successfully seek on every possible input stream. When XmlReader throws an exception it can not be determined whether it happened because of an premature EOF or because of a non-wellformed XML. XmlReader.EOF is not set in case of an exception. As workaround I derived my own MemoryBuffer, which returns the very last byte as a single byte. This way I know that the XmlReader was really interested in the last byte and the following exception is likely due to a truncated message (this is kinda sloppy, in that it might not detect every non-wellformed message. However, after appending more bytes to the buffer, sooner or later the error will be detected. I could cast my XmlReader to the IXmlLineInfo interface, which gives access to the LineNumber and the LinePosition of the current node. So after reading the first message I remember these positions and use it to truncate the buffer. Here comes the really sloppy part, because I have to use the character encoding to get the byte position. I am sure you could find test cases for the code below where it breaks (e.g. internal elements with mixed encoding). But up to now it worked for all my tests. The parser class follows here -- may it be useful (I know, its very far from perfect...) class XmlParser { private byte[] buffer = new byte[0]; public int Length { get { return buffer.Length; } } // Append new binary data to the internal data buffer... public XmlParser Append(byte[] buffer2) { if (buffer2 != null && buffer2.Length > 0) { // I know, its not an efficient way to do this. // The EofMemoryStream should handle a List<byte[]> ... byte[] new_buffer = new byte[buffer.Length + buffer2.Length]; buffer.CopyTo(new_buffer, 0); buffer2.CopyTo(new_buffer, buffer.Length); buffer = new_buffer; } return this; } // MemoryStream which returns the last byte of the buffer individually, // so that we know that the buffering XmlReader really locked at the last // byte of the stream. // Moreover there is an EOF marker. private class EofMemoryStream: Stream { public bool EOF { get; private set; } private MemoryStream mem_; public override bool CanSeek { get { return false; } } public override bool CanWrite { get { return false; } } public override bool CanRead { get { return true; } } public override long Length { get { return mem_.Length; } } public override long Position { get { return mem_.Position; } set { throw new NotSupportedException(); } } public override void Flush() { mem_.Flush(); } public override long Seek(long offset, SeekOrigin origin) { throw new NotSupportedException(); } public override void SetLength(long value) { throw new NotSupportedException(); } public override void Write(byte[] buffer, int offset, int count) { throw new NotSupportedException(); } public override int Read(byte[] buffer, int offset, int count) { count = Math.Min(count, Math.Max(1, (int)(Length - Position - 1))); int nread = mem_.Read(buffer, offset, count); if (nread == 0) { EOF = true; } return nread; } public EofMemoryStream(byte[] buffer) { mem_ = new MemoryStream(buffer, false); EOF = false; } protected override void Dispose(bool disposing) { mem_.Dispose(); } } // Parses the first xml message from the stream. // If the first message is not yet complete, it returns null. // If the buffer contains non-wellformed xml, it ~should~ throw an exception. // After reading an xml message, it pops the data from the byte array. public Message deserialize() { if (buffer.Length == 0) { return null; } Message message = null; Encoding encoding = Message.default_encoding; //string xml = encoding.GetString(buffer); using (EofMemoryStream sbuffer = new EofMemoryStream (buffer)) { XmlDocument xmlDocument = null; XmlReaderSettings settings = new XmlReaderSettings(); int LineNumber = -1; int LinePosition = -1; bool truncate_buffer = false; using (XmlReader xmlReader = XmlReader.Create(sbuffer, settings)) { try { // Read to the first node (skipping over some element-types. // Don't use MoveToContent here, because it would skip the // XmlDeclaration too... while (xmlReader.Read() && (xmlReader.NodeType==XmlNodeType.Whitespace || xmlReader.NodeType==XmlNodeType.Comment)) { }; // Check for XML declaration. // If the message has an XmlDeclaration, extract the encoding. switch (xmlReader.NodeType) { case XmlNodeType.XmlDeclaration: while (xmlReader.MoveToNextAttribute()) { if (xmlReader.Name == "encoding") { encoding = Encoding.GetEncoding(xmlReader.Value); } } xmlReader.MoveToContent(); xmlReader.Read(); break; } // Move to the first element. xmlReader.MoveToContent(); // Read the entire document. xmlDocument = new XmlDocument(); xmlDocument.Load(xmlReader.ReadSubtree()); } catch (XmlException e) { // The parsing of the xml failed. If the XmlReader did // not yet look at the last byte, it is assumed that the // XML is invalid and the exception is re-thrown. if (sbuffer.EOF) { return null; } throw e; } { // Try to serialize an internal data structure using XmlSerializer. Type type = null; try { type = Type.GetType("my.namespace." + xmlDocument.DocumentElement.Name); } catch (Exception e) { // No specialized data container for this class found... } if (type == null) { message = new Message(); } else { // TODO: reuse the serializer... System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(type); message = (Message)ser.Deserialize(new XmlNodeReader(xmlDocument)); } message.doc = xmlDocument; } // At this point, the first XML message was sucessfully parsed. // Remember the lineposition of the current end element. IXmlLineInfo xmlLineInfo = xmlReader as IXmlLineInfo; if (xmlLineInfo != null && xmlLineInfo.HasLineInfo()) { LineNumber = xmlLineInfo.LineNumber; LinePosition = xmlLineInfo.LinePosition; } // Try to read the rest of the buffer. // If an exception is thrown, another xml message appears. // This way the xml parser could tell us that the message is finished here. // This would be prefered as truncating the buffer using the line info is sloppy. try { while (xmlReader.Read()) { } } catch { // There comes a second message. Needs workaround for trunkating. truncate_buffer = true; } } if (truncate_buffer) { if (LineNumber < 0) { throw new Exception("LineNumber not given. Cannot truncate xml buffer"); } // Convert the buffer to a string using the encoding found before // (or the default encoding). string s = encoding.GetString(buffer); // Seek to the line. int char_index = 0; while (--LineNumber > 0) { // Recognize \r , \n , \r\n as newlines... char_index = s.IndexOfAny(new char[] {'\r', '\n'}, char_index); // char_index should not be -1 because LineNumber>0, otherwise an RangeException is // thrown, which is appropriate. char_index++; if (s[char_index-1]=='\r' && s.Length>char_index && s[char_index]=='\n') { char_index++; } } char_index += LinePosition - 1; var rgx = new System.Text.RegularExpressions.Regex(xmlDocument.DocumentElement.Name + "[ \r\n\t]*\\>"); System.Text.RegularExpressions.Match match = rgx.Match(s, char_index); if (!match.Success || match.Index != char_index) { throw new Exception("could not find EndElement to truncate the xml buffer."); } char_index += match.Value.Length; // Convert the character offset back to the byte offset (for the given encoding). int line1_boffset = encoding.GetByteCount(s.Substring(0, char_index)); // remove the bytes from the buffer. buffer = buffer.Skip(line1_boffset).ToArray(); } else { buffer = new byte[0]; } } return message; } }

Read the article

Query on simple C++ threadpool implementation

- by ticketman

Stackoverflow has been a tremendous help to me and I'd to give something back to the community. I have been implementing a simple threadpool using the tinythread C++ portable thread library, using what I have learnt from Stackoverflow. I am new to thread programming, so not that comfortable with mutexes, etc. I have a question best asked after presenting the code (which runs quite well under Linux): // ThreadPool.h class ThreadPool { public: ThreadPool(); ~ThreadPool(); // Creates a pool of threads and gets them ready to be used void CreateThreads(int numOfThreads); // Assigns a job to a thread in the pool, but doesn't start the job // Each SubmitJob call will use up one thread of the pool. // This operation can only be undone by calling StartJobs and // then waiting for the jobs to complete. On completion, // new jobs may be submitted. void SubmitJob( void (*workFunc)(void *), void *workData ); // Begins execution of all the jobs in the pool. void StartJobs(); // Waits until all jobs have completed. // The wait will block the caller. // On completion, new jobs may be submitted. void WaitForJobsToComplete(); private: enum typeOfWorkEnum { e_work, e_quit }; class ThreadData { public: bool ready; // thread has been created and is ready for work bool haveWorkToDo; typeOfWorkEnum typeOfWork; // Pointer to the work function each thread has to call. void (*workFunc)(void *); // Pointer to work data void *workData; ThreadData() : ready(false), haveWorkToDo(false) { }; }; struct ThreadArgStruct { ThreadPool *threadPoolInstance; int threadId; }; // Data for each thread ThreadData *m_ThreadData; ThreadPool(ThreadPool const&); // copy ctor hidden ThreadPool& operator=(ThreadPool const&); // assign op. hidden // Static function that provides the function pointer that a thread can call // By including the ThreadPool instance in the void * parameter, // we can use it to access other data and methods in the ThreadPool instance. static void ThreadFuncWrapper(void *arg) { ThreadArgStruct *threadArg = static_cast<ThreadArgStruct *>(arg); threadArg->threadPoolInstance->ThreadFunc(threadArg->threadId); } // The function each thread calls void ThreadFunc( int threadId ); // Called by the thread pool destructor void DestroyThreadPool(); // Total number of threads available // (fixed on creation of thread pool) int m_numOfThreads; int m_NumOfThreadsDoingWork; int m_NumOfThreadsGivenJobs; // List of threads std::vector<tthread::thread *> m_ThreadList; // Condition variable to signal each thread has been created and executing tthread::mutex m_ThreadReady_mutex; tthread::condition_variable m_ThreadReady_condvar; // Condition variable to signal each thread to start work tthread::mutex m_WorkToDo_mutex; tthread::condition_variable m_WorkToDo_condvar; // Condition variable to signal the main thread that // all threads in the pool have completed their work tthread::mutex m_WorkCompleted_mutex; tthread::condition_variable m_WorkCompleted_condvar; }; cpp file: // // ThreadPool.cpp // #include "ThreadPool.h" // This is the thread function for each thread. // All threads remain in this function until // they are asked to quit, which only happens // when terminating the thread pool. void ThreadPool::ThreadFunc( int threadId ) { ThreadData *myThreadData = &m_ThreadData[threadId]; std::cout << "Hello world: Thread " << threadId << std::endl; // Signal that this thread is ready m_ThreadReady_mutex.lock(); myThreadData->ready = true; m_ThreadReady_condvar.notify_one(); // notify the main thread m_ThreadReady_mutex.unlock(); while(true) { //tthread::lock_guard<tthread::mutex> guard(m); m_WorkToDo_mutex.lock(); while(!myThreadData->haveWorkToDo) // check for work to do m_WorkToDo_condvar.wait(m_WorkToDo_mutex); // if no work, wait here myThreadData->haveWorkToDo = false; // need to do this before unlocking the mutex m_WorkToDo_mutex.unlock(); // Do the work switch(myThreadData->typeOfWork) { case e_work: std::cout << "Thread " << threadId << ": Woken with work to do\n"; // Do work myThreadData->workFunc(myThreadData->workData); std::cout << "#Thread " << threadId << ": Work is completed\n"; break; case e_quit: std::cout << "Thread " << threadId << ": Asked to quit\n"; return; // ends the thread } // Now to signal the main thread that my work is completed m_WorkCompleted_mutex.lock(); m_NumOfThreadsDoingWork--; // Unsure if this 'if' would make the program more efficient // if(NumOfThreadsDoingWork == 0) m_WorkCompleted_condvar.notify_one(); // notify the main thread m_WorkCompleted_mutex.unlock(); } } ThreadPool::ThreadPool() { m_numOfThreads = 0; m_NumOfThreadsDoingWork = 0; m_NumOfThreadsGivenJobs = 0; } ThreadPool::~ThreadPool() { if(m_numOfThreads) { DestroyThreadPool(); delete [] m_ThreadData; } } void ThreadPool::CreateThreads(int numOfThreads) { // Check a thread pool has already been created if(m_numOfThreads > 0) return; m_NumOfThreadsGivenJobs = 0; m_NumOfThreadsDoingWork = 0; m_numOfThreads = numOfThreads; m_ThreadData = new ThreadData[m_numOfThreads]; ThreadArgStruct threadArg; for(int i=0; i<m_numOfThreads; ++i) { threadArg.threadId = i; threadArg.threadPoolInstance = this; // Creates the thread and save in a list so we can destroy it later m_ThreadList.push_back( new tthread::thread( ThreadFuncWrapper, (void *)&threadArg ) ); // It takes a little time for a thread to get established. // Best wait until it gets established before creating the next thread. m_ThreadReady_mutex.lock(); while(!m_ThreadData[i].ready) // Check if thread is ready m_ThreadReady_condvar.wait(m_ThreadReady_mutex); // If not, wait here m_ThreadReady_mutex.unlock(); } } // Adds a job to the batch, but doesn't start the job void ThreadPool::SubmitJob(void (*workFunc)(void *), void *workData) { // Check that the thread pool has been created if(!m_numOfThreads) return; if(m_NumOfThreadsGivenJobs >= m_numOfThreads) return; m_ThreadData[m_NumOfThreadsGivenJobs].workFunc = workFunc; m_ThreadData[m_NumOfThreadsGivenJobs].workData = workData; std::cout << "Submitted job " << m_NumOfThreadsGivenJobs << std::endl; m_NumOfThreadsGivenJobs++; } void ThreadPool::StartJobs() { // Check that the thread pool has been created // and some jobs have been assigned if(!m_numOfThreads || !m_NumOfThreadsGivenJobs) return; // Set 'haveworkToDo' flag for all threads m_WorkToDo_mutex.lock(); for(int i=0; i<m_NumOfThreadsGivenJobs; ++i) m_ThreadData[i].haveWorkToDo = true; m_NumOfThreadsDoingWork = m_NumOfThreadsGivenJobs; // Reset this counter so we can resubmit jobs later m_NumOfThreadsGivenJobs = 0; // Notify all threads they have work to do m_WorkToDo_condvar.notify_all(); m_WorkToDo_mutex.unlock(); } void ThreadPool::WaitForJobsToComplete() { // Check that a thread pool has been created if(!m_numOfThreads) return; m_WorkCompleted_mutex.lock(); while(m_NumOfThreadsDoingWork > 0) // Check if all threads have completed their work m_WorkCompleted_condvar.wait(m_WorkCompleted_mutex); // If not, wait here m_WorkCompleted_mutex.unlock(); } void ThreadPool::DestroyThreadPool() { std::cout << "Ask threads to quit\n"; m_WorkToDo_mutex.lock(); for(int i=0; i<m_numOfThreads; ++i) { m_ThreadData[i].haveWorkToDo = true; m_ThreadData[i].typeOfWork = e_quit; } m_WorkToDo_condvar.notify_all(); m_WorkToDo_mutex.unlock(); // As each thread terminates, catch them here for(int i=0; i<m_numOfThreads; ++i) { tthread::thread *t = m_ThreadList[i]; // Wait for thread to complete t->join(); } m_numOfThreads = 0; } Example of usage: (this calculates pi-squared/6) struct CalculationDataStruct { int inputVal; double outputVal; }; void LongCalculation( void *theSums ) { CalculationDataStruct *sums = (CalculationDataStruct *)theSums; int terms = sums->inputVal; double sum; for(int i=1; i<terms; i++) sum += 1.0/( double(i)*double(i) ); sums->outputVal = sum; } int main(int argc, char** argv) { int numThreads = 10; // Create pool ThreadPool threadPool; threadPool.CreateThreads(numThreads); // Create thread workspace CalculationDataStruct sums[numThreads]; // Set up jobs for(int i=0; i<numThreads; i++) { sums[i].inputVal = 3000*(i+1); threadPool.SubmitJob(LongCalculation, &sums[i]); } // Run the jobs threadPool.StartJobs(); threadPool.WaitForJobsToComplete(); // Print results for(int i=0; i<numThreads; i++) std::cout << "Sum of " << sums[i].inputVal << " terms is " << sums[i].outputVal << std::endl; return 0; } Question: In the ThreadPool::ThreadFunc method, would better performance be obtained if the following if statement if(NumOfThreadsDoingWork == 0) was included? Also, I'd be grateful of criticisms and ways to improve the code. At the same time, I hope the code is of use to others.

Read the article

Inserting instructions into method.

- by Alix

Hi, (First of all, this is a very lengthy post, but don't worry: I've already implemented all of it, I'm just asking your opinion.) I'm having trouble implementing the following; I'd appreciate some help: I get a Type as parameter. I define a subclass using reflection. Notice that I don't intend to modify the original type, but create a new one. I create a property per field of the original class, like so: [- ignore this text here; I had to add something or the formatting wouldn't work <-] public class OriginalClass { private int x; } public class Subclass : OriginalClass { private int x; public int X { get { return x; } set { x = value; } } } [This is number 4! Numbered lists don't work if you add code in between; sorry] For every method of the superclass, I create an analogous method in the subclass. The method's body must be the same except that I replace the instructions ldfld x with callvirt this.get_X, that is, instead of reading from the field directly I call the get accessor. I'm having trouble with step 4. I know you're not supposed to manipulate code like this, but I really need to. Here's what I've tried: Attempt #1: Use Mono.Cecil. This would allow me to parse the body of the method into human-readable Instructions, and easily replace instructions. However, the original type isn't in a .dll file, so I can't find a way to load it with Mono.Cecil. Writing the type to a .dll, then load it, then modify it and write the new type to disk (which I think is the way you create a type with Mono.Cecil), and then load it seems like a huge overhead. Attempt #2: Use Mono.Reflection. This would also allow me to parse the body into Instructions, but then I have no support for replacing instructions. I've implemented a very ugly and inefficient solution using Mono.Reflection, but it doesn't yet support methods that contain try-catch statements (although I guess I can implement this) and I'm concerned that there may be other scenarios in which it won't work, since I'm using the ILGenerator in a somewhat unusual way. Also, it's very ugly ;). Here's what I've done: private void TransformMethod(MethodInfo methodInfo) { // Create a method with the same signature. ParameterInfo[] paramList = methodInfo.GetParameters(); Type[] args = new Type[paramList.Length]; for (int i = 0; i < args.Length; i++) { args[i] = paramList[i].ParameterType; } MethodBuilder methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, methodInfo.Attributes, methodInfo.ReturnType, args); ILGenerator ilGen = methodBuilder.GetILGenerator(); // Declare the same local variables as in the original method. IList<LocalVariableInfo> locals = methodInfo.GetMethodBody().LocalVariables; foreach (LocalVariableInfo local in locals) { ilGen.DeclareLocal(local.LocalType); } // Get readable instructions. IList<Instruction> instructions = methodInfo.GetInstructions(); // I first need to define labels for every instruction in case I // later find a jump to that instruction. Once the instruction has // been emitted I cannot label it, so I'll need to do it in advance. // Since I'm doing a first pass on the method's body anyway, I could // instead just create labels where they are truly needed, but for // now I'm using this quick fix. Dictionary<int, Label> labels = new Dictionary<int, Label>(); foreach (Instruction instr in instructions) { labels[instr.Offset] = ilGen.DefineLabel(); } foreach (Instruction instr in instructions) { // Mark this instruction with a label, in case there's a branch // instruction that jumps here. ilGen.MarkLabel(labels[instr.Offset]); // If this is the instruction that I want to replace (ldfld x)... if (instr.OpCode == OpCodes.Ldfld) { // ...get the get accessor for the accessed field (get_X()) // (I have the accessors in a dictionary; this isn't relevant), MethodInfo safeReadAccessor = dataMembersSafeAccessors[((FieldInfo) instr.Operand).Name][0]; // ...instead of emitting the original instruction (ldfld x), // emit a call to the get accessor, ilGen.Emit(OpCodes.Callvirt, safeReadAccessor); // Else (it's any other instruction), reemit the instruction, unaltered. } else { Reemit(instr, ilGen, labels); } } } And here comes the horrible, horrible Reemit method: private void Reemit(Instruction instr, ILGenerator ilGen, Dictionary<int, Label> labels) { // If the instruction doesn't have an operand, emit the opcode and return. if (instr.Operand == null) { ilGen.Emit(instr.OpCode); return; } // Else (it has an operand)... // If it's a branch instruction, retrieve the corresponding label (to // which we want to jump), emit the instruction and return. if (instr.OpCode.FlowControl == FlowControl.Branch) { ilGen.Emit(instr.OpCode, labels[Int32.Parse(instr.Operand.ToString())]); return; } // Otherwise, simply emit the instruction. I need to use the right // Emit call, so I need to cast the operand to its type. Type operandType = instr.Operand.GetType(); if (typeof(byte).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (byte) instr.Operand); else if (typeof(double).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (double) instr.Operand); else if (typeof(float).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (float) instr.Operand); else if (typeof(int).IsAssignableFrom(operandType)) ilGen.Emit(instr.OpCode, (int) instr.Operand); ... // you get the idea. This is a pretty long method, all like this. } Branch instructions are a special case because instr.Operand is SByte, but Emit expects an operand of type Label. Hence the need for the Dictionary labels. As you can see, this is pretty horrible. What's more, it doesn't work in all cases, for instance with methods that contain try-catch statements, since I haven't emitted them using methods BeginExceptionBlock, BeginCatchBlock, etc, of ILGenerator. This is getting complicated. I guess I can do it: MethodBody has a list of ExceptionHandlingClause that should contain the necessary information to do this. But I don't like this solution anyway, so I'll save this as a last-resort solution. Attempt #3: Go bare-back and just copy the byte array returned by MethodBody.GetILAsByteArray(), since I only want to replace a single instruction for another single instruction of the same size that produces the exact same result: it loads the same type of object on the stack, etc. So there won't be any labels shifting and everything should work exactly the same. I've done this, replacing specific bytes of the array and then calling MethodBuilder.CreateMethodBody(byte[], int), but I still get the same error with exceptions, and I still need to declare the local variables or I'll get an error... even when I simply copy the method's body and don't change anything. So this is more efficient but I still have to take care of the exceptions, etc. Sigh. Here's the implementation of attempt #3, in case anyone is interested: private void TransformMethod(MethodInfo methodInfo, Dictionary<string, MethodInfo[]> dataMembersSafeAccessors, ModuleBuilder moduleBuilder) { ParameterInfo[] paramList = methodInfo.GetParameters(); Type[] args = new Type[paramList.Length]; for (int i = 0; i < args.Length; i++) { args[i] = paramList[i].ParameterType; } MethodBuilder methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, methodInfo.Attributes, methodInfo.ReturnType, args); ILGenerator ilGen = methodBuilder.GetILGenerator(); IList<LocalVariableInfo> locals = methodInfo.GetMethodBody().LocalVariables; foreach (LocalVariableInfo local in locals) { ilGen.DeclareLocal(local.LocalType); } byte[] rawInstructions = methodInfo.GetMethodBody().GetILAsByteArray(); IList<Instruction> instructions = methodInfo.GetInstructions(); int k = 0; foreach (Instruction instr in instructions) { if (instr.OpCode == OpCodes.Ldfld) { MethodInfo safeReadAccessor = dataMembersSafeAccessors[((FieldInfo) instr.Operand).Name][0]; byte[] bytes = toByteArray(OpCodes.Callvirt.Value); for (int m = 0; m < OpCodes.Callvirt.Size; m++) { rawInstructions[k++] = bytes[put.Length - 1 - m]; } bytes = toByteArray(moduleBuilder.GetMethodToken(safeReadAccessor).Token); for (int m = instr.Size - OpCodes.Ldfld.Size - 1; m >= 0; m--) { rawInstructions[k++] = bytes[m]; } } else { k += instr.Size; } } methodBuilder.CreateMethodBody(rawInstructions, rawInstructions.Length); } private static byte[] toByteArray(int intValue) { byte[] intBytes = BitConverter.GetBytes(intValue); if (BitConverter.IsLittleEndian) Array.Reverse(intBytes); return intBytes; } private static byte[] toByteArray(short shortValue) { byte[] intBytes = BitConverter.GetBytes(shortValue); if (BitConverter.IsLittleEndian) Array.Reverse(intBytes); return intBytes; } (I know it isn't pretty. Sorry. I put it quickly together to see if it would work.) I don't have much hope, but can anyone suggest anything better than this? Sorry about the extremely lengthy post, and thanks.

Read the article

Optimized OCR black/white pixel algorithm

- by eagle

I am writing a simple OCR solution for a finite set of characters. That is, I know the exact way all 26 letters in the alphabet will look like. I am using C# and am able to easily determine if a given pixel should be treated as black or white. I am generating a matrix of black/white pixels for every single character. So for example, the letter I (capital i), might look like the following: 01110 00100 00100 00100 01110 Note: all points, which I use later in this post, assume that the top left pixel is (0, 0), bottom right pixel is (4, 4). 1's represent black pixels, and 0's represent white pixels. I would create a corresponding matrix in C# like this: CreateLetter("I", new List<List<bool>>() { new List<bool>() { false, true, true, true, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, true, true, true, false } }); I know I could probably optimize this part by using a multi-dimensional array instead, but let's ignore that for now, this is for illustrative purposes. Every letter is exactly the same dimensions, 10px by 11px (10px by 11px is the actual dimensions of a character in my real program. I simplified this to 5px by 5px in this posting since it is much easier to "draw" the letters using 0's and 1's on a smaller image). Now when I give it a 10px by 11px part of an image to analyze with OCR, it would need to run on every single letter (26) on every single pixel (10 * 11 = 110) which would mean 2,860 (26 * 110) iterations (in the worst case) for every single character. I was thinking this could be optimized by defining the unique characteristics of every character. So, for example, let's assume that the set of characters only consists of 5 distinct letters: I, A, O, B, and L. These might look like the following: 01110 00100 00100 01100 01000 00100 01010 01010 01010 01000 00100 01110 01010 01100 01000 00100 01010 01010 01010 01000 01110 01010 00100 01100 01110 After analyzing the unique characteristics of every character, I can significantly reduce the number of tests that need to be performed to test for a character. For example, for the "I" character, I could define it's unique characteristics as having a black pixel in the coordinate (3, 0) since no other characters have that pixel as black. So instead of testing 110 pixels for a match on the "I" character, I reduced it to a 1 pixel test. This is what it might look like for all these characters: var LetterI = new OcrLetter() { Name = "I", BlackPixels = new List<Point>() { new Point (3, 0) } } var LetterA = new OcrLetter() { Name = "A", WhitePixels = new List<Point>() { new Point(2, 4) } } var LetterO = new OcrLetter() { Name = "O", BlackPixels = new List<Point>() { new Point(3, 2) }, WhitePixels = new List<Point>() { new Point(2, 2) } } var LetterB = new OcrLetter() { Name = "B", BlackPixels = new List<Point>() { new Point(3, 1) }, WhitePixels = new List<Point>() { new Point(3, 2) } } var LetterL = new OcrLetter() { Name = "L", BlackPixels = new List<Point>() { new Point(1, 1), new Point(3, 4) }, WhitePixels = new List<Point>() { new Point(2, 2) } } This is challenging to do manually for 5 characters and gets much harder the greater the amount of letters that are added. You also want to guarantee that you have the minimum set of unique characteristics of a letter since you want it to be optimized as much as possible. I want to create an algorithm that will identify the unique characteristics of all the letters and would generate similar code to that above. I would then use this optimized black/white matrix to identify characters. How do I take the 26 letters that have all their black/white pixels filled in (e.g. the CreateLetter code block) and convert them to an optimized set of unique characteristics that define a letter (e.g. the new OcrLetter() code block)? And how would I guarantee that it is the most efficient definition set of unique characteristics (e.g. instead of defining 6 points as the unique characteristics, there might be a way to do it with 1 or 2 points, as the letter "I" in my example was able to). An alternative solution I've come up with is using a hash table, which will reduce it from 2,860 iterations to 110 iterations, a 26 time reduction. This is how it might work: I would populate it with data similar to the following: Letters["01110 00100 00100 00100 01110"] = "I"; Letters["00100 01010 01110 01010 01010"] = "A"; Letters["00100 01010 01010 01010 00100"] = "O"; Letters["01100 01010 01100 01010 01100"] = "B"; Now when I reach a location in the image to process, I convert it to a string such as: "01110 00100 00100 00100 01110" and simply find it in the hash table. This solution seems very simple, however, this still requires 110 iterations to generate this string for each letter. In big O notation, the algorithm is the same since O(110N) = O(2860N) = O(N) for N letters to process on the page. However, it is still improved by a constant factor of 26, a significant improvement (e.g. instead of it taking 26 minutes, it would take 1 minute). Update: Most of the solutions provided so far have not addressed the issue of identifying the unique characteristics of a character and rather provide alternative solutions. I am still looking for this solution which, as far as I can tell, is the only way to achieve the fastest OCR processing. I just came up with a partial solution: For each pixel, in the grid, store the letters that have it as a black pixel. Using these letters: I A O B L 01110 00100 00100 01100 01000 00100 01010 01010 01010 01000 00100 01110 01010 01100 01000 00100 01010 01010 01010 01000 01110 01010 00100 01100 01110 You would have something like this: CreatePixel(new Point(0, 0), new List<Char>() { }); CreatePixel(new Point(1, 0), new List<Char>() { 'I', 'B', 'L' }); CreatePixel(new Point(2, 0), new List<Char>() { 'I', 'A', 'O', 'B' }); CreatePixel(new Point(3, 0), new List<Char>() { 'I' }); CreatePixel(new Point(4, 0), new List<Char>() { }); CreatePixel(new Point(0, 1), new List<Char>() { }); CreatePixel(new Point(1, 1), new List<Char>() { 'A', 'B', 'L' }); CreatePixel(new Point(2, 1), new List<Char>() { 'I' }); CreatePixel(new Point(3, 1), new List<Char>() { 'A', 'O', 'B' }); // ... CreatePixel(new Point(2, 2), new List<Char>() { 'I', 'A', 'B' }); CreatePixel(new Point(3, 2), new List<Char>() { 'A', 'O' }); // ... CreatePixel(new Point(2, 4), new List<Char>() { 'I', 'O', 'B', 'L' }); CreatePixel(new Point(3, 4), new List<Char>() { 'I', 'A', 'L' }); CreatePixel(new Point(4, 4), new List<Char>() { }); Now for every letter, in order to find the unique characteristics, you need to look at which buckets it belongs to, as well as the amount of other characters in the bucket. So let's take the example of "I". We go to all the buckets it belongs to (1,0; 2,0; 3,0; ...; 3,4) and see that the one with the least amount of other characters is (3,0). In fact, it only has 1 character, meaning it must be an "I" in this case, and we found our unique characteristic. You can also do the same for pixels that would be white. Notice that bucket (2,0) contains all the letters except for "L", this means that it could be used as a white pixel test. Similarly, (2,4) doesn't contain an 'A'. Buckets that either contain all the letters or none of the letters can be discarded immediately, since these pixels can't help define a unique characteristic (e.g. 1,1; 4,0; 0,1; 4,4). It gets trickier when you don't have a 1 pixel test for a letter, for example in the case of 'O' and 'B'. Let's walk through the test for 'O'... It's contained in the following buckets: // Bucket Count Letters // 2,0 4 I, A, O, B // 3,1 3 A, O, B // 3,2 2 A, O // 2,4 4 I, O, B, L Additionally, we also have a few white pixel tests that can help: (I only listed those that are missing at most 2). The Missing Count was calculated as (5 - Bucket.Count). // Bucket Missing Count Missing Letters // 1,0 2 A, O // 1,1 2 I, O // 2,2 2 O, L // 3,4 2 O, B So now we can take the shortest black pixel bucket (3,2) and see that when we test for (3,2) we know it is either an 'A' or an 'O'. So we need an easy way to tell the difference between an 'A' and an 'O'. We could either look for a black pixel bucket that contains 'O' but not 'A' (e.g. 2,4) or a white pixel bucket that contains an 'O' but not an 'A' (e.g. 1,1). Either of these could be used in combination with the (3,2) pixel to uniquely identify the letter 'O' with only 2 tests. This seems like a simple algorithm when there are 5 characters, but how would I do this when there are 26 letters and a lot more pixels overlapping? For example, let's say that after the (3,2) pixel test, it found 10 different characters that contain the pixel (and this was the least from all the buckets). Now I need to find differences from 9 other characters instead of only 1 other character. How would I achieve my goal of getting the least amount of checks as possible, and ensure that I am not running extraneous tests?

Read the article

MS Word Macro - Numeric field insertion with automatic calculation at end of page

- by Will

Hi, I am trying to duplicate a feature that exists in Multimate (Ashton Tate) word processor. Yes, the one that hasnt been supported for 20 years! If I can duplicate this one feature I can get all the users off MM and onto Word. The documents they create are billing documents. they consist of a descriptive paragraph of any length on the left side of the page, and a billing amount at the end of the paragraph over on the right hand side, like this (excuse the imperfect formatting).... +-----------------whole page--------------------+ | | | pppp-para 1-pppppppppp | | p p | | p p | | p p | | p p | | p p | | p p | | pppppppppppppppppppp $$$$$ | | | | | | pppp-para 2-pppppppppp | | p p | | p p | | p p | | p p | | p p | | p p | | pppppppppppppppppppp $$$$$ | | | | | | etc | +-----------------------------------------------------+ some of these bills can be a few hundred pages and have a dozen or so paragraphs on each page, which is why none of the users will leave MM until this efficient little feature can be duplicated. The thing that MM does really easily is that there is a function key that they can press at any time that will - - jump the cursor from the paragraph they are writing over to the right hand side - create a numeric field - allow them to enter a number into the numeric field - return them to the left hand side to start a new paragraph What MM also does is automatically total the numeric fields on each page and create a subtotal in the page footer. it also creates a total for the entire document and puts this in the footer of the last page. I would like to duplicate this feature in word with a macro, but have no idea where to start. Any suggestions or code would be great, thanks, will.

Read the article

Help Optimizing MySQL Table (~ 500,000 records) and PHP Code.

- by Pyrite

I have a MySQL table that collects player data from various game servers (Urban Terror). The bot that collects the data runs 24/7, and currently the table is up to about 475,000+ records. Because of this, querying this table from PHP has become quite slow. I wonder what I can do on the database side of things to make it as optomized as possible, then I can focus on the application to query the database. The table is as follows: CREATE TABLE IF NOT EXISTS `people` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(40) NOT NULL, `ip` int(4) unsigned NOT NULL, `guid` varchar(32) NOT NULL, `server` int(4) unsigned NOT NULL, `date` int(11) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `Person` (`name`,`ip`,`guid`), KEY `server` (`server`), KEY `date` (`date`), KEY `PlayerName` (`name`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='People that Play on Servers' AUTO_INCREMENT=475843 ; I'm storying the IPv4 (ip and server) as 4 byte integers, and using the MySQL functions NTOA(), etc to encode and decode, I heard that this way is faster, rather than varchar(15). The guid is a md5sum, 32 char hex. Date is stored as unix timestamp. I have a unique key on name, ip and guid, as to avoid duplicates of the same player. Do I have my keys setup right? Is the way I'm storing data efficient? Here is the code to query this table. You search for a name, ip, or guid, and it grabs the results of the query and cross references other records that match the name, ip, or guid from the results of the first query, and does it for each field. This is kind of hard to explain. But basically, if I search for one player by name, I'll see every other name he has used, every IP he has used and every GUID he has used. <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> Search: <input type="text" name="query" id="query" /><input type="submit" name="btnSubmit" value="Submit" /> </form> <?php if (!empty($_POST['query'])) { ?> <table cellspacing="1" id="1up_people" class="tablesorter" width="300"> <thead> <tr> <th>ID</th> <th>Player Name</th> <th>Player IP</th> <th>Player GUID</th> <th>Server</th> <th>Date</th> </tr> </thead> <tbody> <?php function super_unique($array) { $result = array_map("unserialize", array_unique(array_map("serialize", $array))); foreach ($result as $key => $value) { if ( is_array($value) ) { $result[$key] = super_unique($value); } } return $result; } if (!empty($_POST['query'])) { $query = trim($_POST['query']); $count = 0; $people = array(); $link = mysql_connect('localhost', 'mysqluser', 'yea right!'); if (!$link) { die('Could not connect: ' . mysql_error()); } mysql_select_db("1up"); $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (name LIKE \"%$query%\" OR INET_NTOA(ip) LIKE \"%$query%\" OR guid LIKE \"%$query%\")"; $result = mysql_query($sql, $link); if (!$result) { die(mysql_error()); } // Now take the initial results and parse each column into its own array while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } // now for each name, ip, guid in results, find additonal records $people2 = array(); foreach ($people AS $person) { $ip = $person['ip']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (ip = \"$ip\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people2[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } $people3 = array(); foreach ($people AS $person) { $guid = $person['guid']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (guid = \"$guid\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people3[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } $people4 = array(); foreach ($people AS $person) { $name = $person['name']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (name = \"$name\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people4[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } // Combine people and people2 into just people $people = array_merge($people, $people2); $people = array_merge($people, $people3); $people = array_merge($people, $people4); $people = super_unique($people); foreach ($people AS $person) { $date = ($person['date']) ? date("M d, Y", $person['date']) : 'Before 8/1/10'; echo "<tr>\n"; echo "<td>".$person['id']."</td>"; echo "<td>".$person['name']."</td>"; echo "<td>".$person['ip']."</td>"; echo "<td>".$person['guid']."</td>"; echo "<td>".$person['server']."</td>"; echo "<td>".$date."</td>"; echo "</tr>\n"; $count++; } // Find Total Records //$result = mysql_query("SELECT id FROM 1up_people", $link); //$total = mysql_num_rows($result); mysql_close($link); } ?> </tbody> </table> <p> <?php echo $count." Records Found for \"".$_POST['query']."\" out of $total"; ?> </p> <?php } $time_stop = microtime(true); print("Done (ran for ".round($time_stop-$time_start)." seconds)."); ?> Any help at all is appreciated! Thank you.

Read the article

Help Optimizing MySQL Table (~ 500,000 records).

- by Pyrite

I have a MySQL table that collects player data from various game servers (Urban Terror). The bot that collects the data runs 24/7, and currently the table is up to about 475,000+ records. Because of this, querying this table from PHP has become quite slow. I wonder what I can do on the database side of things to make it as optomized as possible, then I can focus on the application to query the database. The table is as follows: CREATE TABLE IF NOT EXISTS `people` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(40) NOT NULL, `ip` int(4) unsigned NOT NULL, `guid` varchar(32) NOT NULL, `server` int(4) unsigned NOT NULL, `date` int(11) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `Person` (`name`,`ip`,`guid`), KEY `server` (`server`), KEY `date` (`date`), KEY `PlayerName` (`name`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='People that Play on Servers' AUTO_INCREMENT=475843 ; I'm storying the IPv4 (ip and server) as 4 byte integers, and using the MySQL functions NTOA(), etc to encode and decode, I heard that this way is faster, rather than varchar(15). The guid is a md5sum, 32 char hex. Date is stored as unix timestamp. I have a unique key on name, ip and guid, as to avoid duplicates of the same player. Do I have my keys setup right? Is the way I'm storing data efficient? Here is the code to query this table. You search for a name, ip, or guid, and it grabs the results of the query and cross references other records that match the name, ip, or guid from the results of the first query, and does it for each field. This is kind of hard to explain. But basically, if I search for one player by name, I'll see every other name he has used, every IP he has used and every GUID he has used. <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> Search: <input type="text" name="query" id="query" /><input type="submit" name="btnSubmit" value="Submit" /> </form> <?php if (!empty($_POST['query'])) { ?> <table cellspacing="1" id="1up_people" class="tablesorter" width="300"> <thead> <tr> <th>ID</th> <th>Player Name</th> <th>Player IP</th> <th>Player GUID</th> <th>Server</th> <th>Date</th> </tr> </thead> <tbody> <?php function super_unique($array) { $result = array_map("unserialize", array_unique(array_map("serialize", $array))); foreach ($result as $key => $value) { if ( is_array($value) ) { $result[$key] = super_unique($value); } } return $result; } if (!empty($_POST['query'])) { $query = trim($_POST['query']); $count = 0; $people = array(); $link = mysql_connect('localhost', 'mysqluser', 'yea right!'); if (!$link) { die('Could not connect: ' . mysql_error()); } mysql_select_db("1up"); $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (name LIKE \"%$query%\" OR INET_NTOA(ip) LIKE \"%$query%\" OR guid LIKE \"%$query%\")"; $result = mysql_query($sql, $link); if (!$result) { die(mysql_error()); } // Now take the initial results and parse each column into its own array while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } // now for each name, ip, guid in results, find additonal records $people2 = array(); foreach ($people AS $person) { $ip = $person['ip']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (ip = \"$ip\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people2[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } $people3 = array(); foreach ($people AS $person) { $guid = $person['guid']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (guid = \"$guid\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people3[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } $people4 = array(); foreach ($people AS $person) { $name = $person['name']; $sql = "SELECT id, name, INET_NTOA(ip) AS ip, guid, INET_NTOA(server) AS server, date FROM 1up_people WHERE (name = \"$name\")"; $result = mysql_query($sql, $link); while ($row = mysql_fetch_array($result, MYSQL_NUM)) { $name = htmlspecialchars($row[1]); $people4[] = array( 'id' => $row[0], 'name' => $name, 'ip' => $row[2], 'guid' => $row[3], 'server' => $row[4], 'date' => $row[5] ); } } // Combine people and people2 into just people $people = array_merge($people, $people2); $people = array_merge($people, $people3); $people = array_merge($people, $people4); $people = super_unique($people); foreach ($people AS $person) { $date = ($person['date']) ? date("M d, Y", $person['date']) : 'Before 8/1/10'; echo "<tr>\n"; echo "<td>".$person['id']."</td>"; echo "<td>".$person['name']."</td>"; echo "<td>".$person['ip']."</td>"; echo "<td>".$person['guid']."</td>"; echo "<td>".$person['server']."</td>"; echo "<td>".$date."</td>"; echo "</tr>\n"; $count++; } // Find Total Records //$result = mysql_query("SELECT id FROM 1up_people", $link); //$total = mysql_num_rows($result); mysql_close($link); } ?> </tbody> </table> <p> <?php echo $count." Records Found for \"".$_POST['query']."\" out of $total"; ?> </p> <?php } $time_stop = microtime(true); print("Done (ran for ".round($time_stop-$time_start)." seconds)."); ?> Any help at all is appreciated! Thank you.

Read the article

Magento, NGINX, PHP-FPM, APC, MEMCACHED, 16gb Ram CentOS, Spiking PHP-FPM to 100% CPU

- by Terry Dunford

I have been trying to resolve my issue of spiking cpu caused by php-fpm processes. I've reduced the php-fpm config settings to: pm = ondemand pm.max_children = 12 pm.start_servers = 2 pm.min_spare_servers = 2 pm.max_spare_servers = 10 pm.max_requests = 500 php_admin_value[memory_limit] = 128M Problem still exists. I'm running a Joomla main site (which is having no problems) and a Magento store in a sub-directory. My server is a Linux CentOS, running NGINX, APC, Memcached, Full Page Cache and php-fpm. My server has 8 cores and 16gb dedicated ram. My host has shut down my server several times the past week because my php-fpm processes are consuming the entire network. A lot of the individual php-fpm processes are getting over 50% cpu. I've hired several "professionals" and none of them was able to help me, so now broke and stumped, I'm turning to you guys for help. So any suggestions would be greatly appreciated. I turned on slow php logs and here are some of the latest results: [01-Apr-2012 14:26:12] [pool magento] pid 21537 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a394f8] _renderStraightjoin() /home/flyfish/www/flyshop/lib/Varien/Db/Select.php:397 [0x0000000011a39158] _renderStraightjoin() /home/flyfish/www/flyshop/lib/Zend/Db/Select.php:705 [0x0000000011a38f30] assemble() /home/flyfish/www/flyshop/lib/Zend/Db/Select.php:1343 [0x00007fffbb6d6e50] __toString() unknown:0 [0x0000000011a38630] _prepareQuery() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:409 [0x0000000011a38270] _prepareQuery() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:388 [0x0000000011a38008] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000011a375c8] fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:196 [0x0000000011a370e0] _loadLabels() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:129 [0x0000000011a369a0] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x0000000011a364a8] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x0000000011a35968] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x0000000011a35590] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x0000000011a35410] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x0000000011a35098] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x0000000011a34fa8] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x0000000011a33998] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x0000000011a331f0] +++ dump failed [01-Apr-2012 14:26:44] [pool magento] pid 21531 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a37768] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:251 [0x0000000011a37280] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:132 [0x0000000011a36b40] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x0000000011a36648] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x0000000011a35b08] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x0000000011a35730] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x0000000011a355b0] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x0000000011a35238] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x0000000011a35148] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x0000000011a33b38] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x0000000011a33390] +++ dump failed [01-Apr-2012 14:27:01] [pool magento] pid 21528 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011ff67a8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011ff6518] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011ff5e90] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011ff5a20] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011ff5438] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011ff5078] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011ff4e98] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:825 [0x0000000011ff4948] fetchOne() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:1161 [0x0000000011ff4678] getProductCount() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Category.php:801 [0x0000000011ff33e0] getProductCount() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:54 [0x0000000011ff2da0] _initItemsData() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:23 [0x0000000011ff2818] _getItemsData() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:119 [0x0000000011ff26b0] _initItems() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php:120 [0x0000000011ff2598] getItems() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php:109 [0x0000000011ff2480] getItemsCount() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Block/Layer/Filter/Abstract.php:126 [0x0000000011ff22b8] getItemsCount() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Layer/View/67dcc5dfa9c44bd3a205b75a08193105.php:218 [0x0000000011ff2088] canShowOptions() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Layer/View/67dcc5dfa9c44bd3a205b75a08193105.php:233 [0x0000000011ff14f8] canShowBlock() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/extendware/ewlayerednav/catalog/layer/view.phtml:6 [0x0000000011ff0d50] +++ dump failed [01-Apr-2012 14:27:04] [pool magento] pid 21529 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000012468ff8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000012468d68] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x00000000124686e0] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000012468270] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000012467c88] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x00000000124678c8] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000012467660] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000012467248] fetchAll() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:687 [0x00000000124668f0] _fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php:1045 [0x0000000012466288] _loadEntities() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php:869 [0x0000000012465fb0] load() /home/flyfish/www/flyshop/app/code/core/Mage/Review/Model/Observer.php:78 [0x0000000012465d10] catalogBlockProductCollectionBeforeToHtml() /home/flyfish/www/flyshop/app/code/core/Mage/Core/Model/App.php:1303 [0x0000000012464c28] _callObserverMethod() /home/flyfish/www/flyshop/app/code/core/Mage/Core/Model/App.php:1278 [0x00000000124649e0] dispatchEvent() /home/flyfish/www/flyshop/app/Mage.php:416 [0x0000000012464290] dispatchEvent() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Block/Product/List.php:163 [0x0000000012463760] _beforeToHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:864 [0x00000000124633b0] toHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:584 [0x0000000012462e30] _getChildHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:528 [0x0000000012462d38] getChildHtml() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Category/View/6362e7526f5dcb27e7f8b0b414b59004.php:85 [0x00000000124629f0] getProductListHtml() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Block/Override/Mage/Catalog/Category/View.php:20 [01-Apr-2012 14:27:55] [pool magento] pid 21536 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a35010] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011a34d80] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011a346f8] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011a34288] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011a33ca0] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011a338e0] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011a33700] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:825 [0x0000000011a33368] fetchOne() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Type.php:71 [0x0000000011a33238] getAdditionalAttributeTable() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:483 [0x0000000011a32be8] getAdditionalAttributeTable() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:500 [0x0000000011a32860] _afterLoad() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:108 [0x0000000011a32330] loadByCode() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php:118 [0x0000000011a31350] loadByCode() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Config.php:423 [0x0000000011a30ce8] getAttribute() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Helper/Output.php:156 [0x0000000011a30208] categoryAttribute() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/catalog/category/view.phtml:47 [0x0000000011a2fa60] +++ dump failed [01-Apr-2012 14:27:56] [pool magento] pid 21530 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a35b10] updateParamDefaults() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:276 [0x0000000011a35750] updateParamDefaults() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:326 [0x0000000011a351f0] getSkinBaseUrl() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:482 [0x0000000011a350a8] getSkinUrl() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:981 [0x0000000011a32468] getSkinUrl() /home/flyfish/www/flyshop/app/code/local/Extendware/EWMinify/Block/Override/Mage/Page/Html/Head.php:126 [0x0000000011a30ca8] getCssJsHtml() /home/flyfish/www/flyshop/app/code/local/Extendware/EWCore/Block/Override/Mage/Page/Html/Head.php:55 [0x0000000011a30978] getCssJsHtml() /home/flyfish/www/flyshop/app/code/local/MageWorx/SeoSuite/Block/Page/Html/Head.php:41 [0x0000000011a2fd10] getCssJsHtml() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-modalheader/rokmage-head.phtml:26 [0x0000000011a2f568] +++ dump failed [01-Apr-2012 14:28:28] [pool magento] pid 21527 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000010c7bba0] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000010c7b910] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000010c7b288] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000010c7ae18] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000010c7a830] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000010c7a470] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000010c7a168] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:808 [0x0000000010c79558] fetchPairs() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php:840 [0x0000000010c79240] addCountToCategories() /home/flyfish/www/flyshop/app/code/community/Mage/Catalog/Block/Navigation.php:133 [0x0000000010c71d48] getCurrentChildCategories() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/rokmagemodules/rokmage-magemenus/rokmage-magemenu-left.phtml:139 [0x0000000010c715a0] +++ dump failed [01-Apr-2012 14:28:28] [pool magento] pid 21577 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a3a8d8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011a3a648] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011a39fc0] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011a39b50] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011a39568] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011a391a8] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011a38f40] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000011a37cc0] fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:276 [0x0000000011a37b20] _loadNodes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:1229 [0x0000000011a379a0] getChildrenCategories() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Category.php:841 [0x0000000011a37690] getChildrenCategories() /home/flyfish/www/flyshop/app/code/community/Mage/Catalog/Block/Navigation.php:130 [0x0000000011a30198] getCurrentChildCategories() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/rokmagemodules/rokmage-magemenus/rokmage-magemenu-left.phtml:139 [0x0000000011a2f9f0] +++ dump failed [01-Apr-2012 14:28:48] [pool magento] pid 21629 script_filename = /home/flyfish/www/flyshop/index.php [0x00002ac987e2cb48] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:252 [0x00002ac987e2c660] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:132 [0x00002ac987e2bf20] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x00002ac987e2ba28] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x00002ac987e2aee8] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x00002ac987e2ab10] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x00002ac987e2a990] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x00002ac987e2a618] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x00002ac987e2a528] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x00002ac987e28f18] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x00002ac987e28770] +++ dump failed ___________________________________________ A snippet of the Latest php-fpm error log: [01-Apr-2012 14:26:12] WARNING: [pool magento] child 21537, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.265105 sec), logging [01-Apr-2012 14:26:12] ERROR: failed to ptrace(PEEKDATA) pid 21537: Input/output error (5) [01-Apr-2012 14:26:44] WARNING: [pool magento] child 21531, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.268434 sec), logging [01-Apr-2012 14:26:44] ERROR: failed to ptrace(PEEKDATA) pid 21531: Input/output error (5) [01-Apr-2012 14:27:01] WARNING: [pool magento] child 21528, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (6.656633 sec), logging [01-Apr-2012 14:27:01] ERROR: failed to ptrace(PEEKDATA) pid 21528: Input/output error (5) [01-Apr-2012 14:27:04] WARNING: [pool magento] child 21529, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.211136 sec), logging [01-Apr-2012 14:27:55] WARNING: [pool magento] child 21536, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.207001 sec), logging [01-Apr-2012 14:27:55] ERROR: failed to ptrace(PEEKDATA) pid 21536: Input/output error (5) [01-Apr-2012 14:27:56] WARNING: [pool magento] child 21530, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.503186 sec), logging [01-Apr-2012 14:27:56] ERROR: failed to ptrace(PEEKDATA) pid 21530: Input/output error (5) [01-Apr-2012 14:28:28] WARNING: [pool magento] child 21577, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.722625 sec), logging [01-Apr-2012 14:28:28] WARNING: [pool magento] child 21527, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.122326 sec), logging [01-Apr-2012 14:28:28] ERROR: failed to ptrace(PEEKDATA) pid 21527: Input/output error (5) [01-Apr-2012 14:28:28] ERROR: failed to ptrace(PEEKDATA) pid 21577: Input/output error (5) [01-Apr-2012 14:28:48] WARNING: [pool magento] child 21629, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.446961 sec), logging [01-Apr-2012 14:28:48] ERROR: failed to ptrace(PEEKDATA) pid 21629: Input/output error (5) _____________________________________________ I also noticed that the server is not using much memory: Mem: 16777216k total, 1204040k used, 15573176k free My.conf settings: query_cache_size = 128M innodb_buffer_pool_size = 512M open-files-limit = 8192 table_cache=4096 I just noticed that someone changed my innodb_buffer_pool_size to 512M. Shouldn't this be set to 80% of available ram? So I have 16gb ram so it should be set at 12G; however, I set it at 10G. What do you think? I made that change and restart everything. Php-fpm is still spiking cpu. Here is just 1 php-fpm process: 23942 user 17 0 507m 99m 27m R 90.9%CPU 0.6 0:03.46 php-fpm I'm sure there may be more information you will need to help, so just let me know what you guys need to help me figure this out. Thank you.

Read the article

Linux e1000e (Intel networking driver) problems galore, where do I start?

- by Evan Carroll

I'm currently having a major problem with e1000e (not working at all) in Ubuntu Maverick (1.0.2-k4), after resume I'm getting a lot of stuff in dmesg: [ 9085.820197] e1000e 0000:02:00.0: PCI INT A disabled [ 9089.907756] e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k4 [ 9089.907762] e1000e: Copyright (c) 1999 - 2009 Intel Corporation. [ 9089.907797] e1000e 0000:02:00.0: Disabling ASPM L1 [ 9089.907827] e1000e 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 9089.907857] e1000e 0000:02:00.0: setting latency timer to 64 [ 9089.908529] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X [ 9089.908922] e1000e 0000:02:00.0: Disabling ASPM L0s [ 9089.908954] e1000e 0000:02:00.0: (unregistered net_device): PHY reset is blocked due to SOL/IDER session. [ 9090.024625] e1000e 0000:02:00.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:0a:e4:3e:ce:74 [ 9090.024630] e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection [ 9090.024712] e1000e 0000:02:00.0: eth0: MAC: 2, PHY: 2, PBA No: 005302-003 [ 9090.109492] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X [ 9090.164219] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X and, a bunch of [ 2128.005447] e1000e 0000:02:00.0: eth0: Detected Hardware Unit Hang: [ 2128.005452] TDH <89> [ 2128.005454] TDT <27> [ 2128.005456] next_to_use <27> [ 2128.005458] next_to_clean <88> [ 2128.005460] buffer_info[next_to_clean]: [ 2128.005463] time_stamp <6e608> [ 2128.005465] next_to_watch <8a> [ 2128.005467] jiffies <6f929> [ 2128.005469] next_to_watch.status <0> [ 2128.005471] MAC Status <80080703> [ 2128.005473] PHY Status <796d> [ 2128.005475] PHY 1000BASE-T Status <4000> [ 2128.005477] PHY Extended Status <3000> [ 2128.005480] PCI Status <10> I decided to compile the latest stable e1000e to 1.2.17, now I'm getting: [ 9895.678050] e1000e: Intel(R) PRO/1000 Network Driver - 1.2.17-NAPI [ 9895.678055] e1000e: Copyright(c) 1999 - 2010 Intel Corporation. [ 9895.678098] e1000e 0000:02:00.0: Disabling ASPM L1 [ 9895.678129] e1000e 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 9895.678162] e1000e 0000:02:00.0: setting latency timer to 64 [ 9895.679136] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X [ 9895.679160] e1000e 0000:02:00.0: Disabling ASPM L0s [ 9895.679192] e1000e 0000:02:00.0: (unregistered net_device): PHY reset is blocked due to SOL/IDER session. [ 9895.791758] e1000e 0000:02:00.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:0a:e4:3e:ce:74 [ 9895.791766] e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection [ 9895.791850] e1000e 0000:02:00.0: eth0: MAC: 3, PHY: 2, PBA No: 005302-003 [ 9895.892464] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X [ 9895.948175] e1000e 0000:02:00.0: irq 44 for MSI/MSI-X [ 9895.949111] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 9895.954694] e1000e: eth0 NIC Link is Up 10 Mbps Full Duplex, Flow Control: RX/TX [ 9895.954703] e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO [ 9895.955157] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 9906.832056] eth0: no IPv6 routers present With 1.2.20 I get: [ 9711.525465] e1000e: Intel(R) PRO/1000 Network Driver - 1.2.20-NAPI [ 9711.525472] e1000e: Copyright(c) 1999 - 2010 Intel Corporation. [ 9711.525521] e1000e 0000:02:00.0: Disabling ASPM L1 [ 9711.525554] e1000e 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 9711.525586] e1000e 0000:02:00.0: setting latency timer to 64 [ 9711.526460] e1000e 0000:02:00.0: irq 45 for MSI/MSI-X [ 9711.526487] e1000e 0000:02:00.0: Disabling ASPM L0s [ 9711.526523] e1000e 0000:02:00.0: (unregistered net_device): PHY reset is blocked due to SOL/IDER session. [ 9711.639763] e1000e 0000:02:00.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:0a:e4:3e:ce:74 [ 9711.639771] e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection [ 9711.639854] e1000e 0000:02:00.0: eth0: MAC: 3, PHY: 2, PBA No: 005302-003 [ 9712.060770] e1000e 0000:02:00.0: irq 45 for MSI/MSI-X [ 9712.116195] e1000e 0000:02:00.0: irq 45 for MSI/MSI-X [ 9712.117098] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 9712.122684] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX [ 9712.122693] e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO [ 9712.123142] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 9722.920014] eth0: no IPv6 routers present But, I'm still getting these [ 9982.992851] PCI Status <10> [ 9984.993602] e1000e 0000:02:00.0: eth0: Detected Hardware Unit Hang: [ 9984.993606] TDH <5d> [ 9984.993608] TDT <6b> [ 9984.993611] next_to_use <6b> [ 9984.993613] next_to_clean <5b> [ 9984.993615] buffer_info[next_to_clean]: [ 9984.993617] time_stamp <24da80> [ 9984.993619] next_to_watch <5d> [ 9984.993621] jiffies <24f200> [ 9984.993624] next_to_watch.status <0> [ 9984.993626] MAC Status <80080703> [ 9984.993628] PHY Status <796d> [ 9984.993630] PHY 1000BASE-T Status <4000> [ 9984.993632] PHY Extended Status <3000> [ 9984.993635] PCI Status <10> [ 9986.001047] e1000e 0000:02:00.0: eth0: Reset adapter [ 9986.176202] e1000e: eth0 NIC Link is Up 10 Mbps Full Duplex, Flow Control: RX/TX [ 9986.176211] e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO I'm not sure where to start troubleshooting this. Any ideas? Here is the result of ethtool -d eth0 MAC Registers ------------- 0x00000: CTRL (Device control register) 0x18100248 Endian mode (buffers): little Link reset: reset Set link up: 1 Invert Loss-Of-Signal: no Receive flow control: enabled Transmit flow control: enabled VLAN mode: disabled Auto speed detect: disabled Speed select: 1000Mb/s Force speed: no Force duplex: no 0x00008: STATUS (Device status register) 0x80080703 Duplex: full Link up: link config TBI mode: disabled Link speed: 10Mb/s Bus type: PCI Express Port number: 0 0x00100: RCTL (Receive control register) 0x04048002 Receiver: enabled Store bad packets: disabled Unicast promiscuous: disabled Multicast promiscuous: disabled Long packet: disabled Descriptor minimum threshold size: 1/2 Broadcast accept mode: accept VLAN filter: enabled Canonical form indicator: disabled Discard pause frames: filtered Pass MAC control frames: don't pass Receive buffer size: 2048 0x02808: RDLEN (Receive desc length) 0x00001000 0x02810: RDH (Receive desc head) 0x00000001 0x02818: RDT (Receive desc tail) 0x000000F0 0x02820: RDTR (Receive delay timer) 0x00000000 0x00400: TCTL (Transmit ctrl register) 0x3103F0FA Transmitter: enabled Pad short packets: enabled Software XOFF Transmission: disabled Re-transmit on late collision: enabled 0x03808: TDLEN (Transmit desc length) 0x00001000 0x03810: TDH (Transmit desc head) 0x00000000 0x03818: TDT (Transmit desc tail) 0x00000000 0x03820: TIDV (Transmit delay timer) 0x00000008 PHY type: IGP2 and ethtool -c eth0 Coalesce parameters for eth0: Adaptive RX: off TX: off stats-block-usecs: 0 sample-interval: 0 pkt-rate-low: 0 pkt-rate-high: 0 rx-usecs: 3 rx-frames: 0 rx-usecs-irq: 0 rx-frames-irq: 0 tx-usecs: 0 tx-frames: 0 tx-usecs-irq: 0 tx-frames-irq: 0 rx-usecs-low: 0 rx-frame-low: 0 tx-usecs-low: 0 tx-frame-low: 0 rx-usecs-high: 0 rx-frame-high: 0 tx-usecs-high: 0 tx-frame-high: 0 Here is also the lspci -vvv for this controller 02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller Subsystem: Lenovo ThinkPad X60s Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 45 Region 0: Memory at ee000000 (32-bit, non-prefetchable) [size=128K] Region 2: I/O ports at 2000 [size=32] Capabilities: [c8] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME- Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0300c Data: 415a Capabilities: [e0] Express (v1) Endpoint, MSI 00 DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+ RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <64us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- AERCap: First Error Pointer: 14, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Device Serial Number 00-0a-e4-ff-ff-3e-ce-74 Kernel driver in use: e1000e Kernel modules: e1000e I filed a bug on this upstream, still no idea how to get more useful information. Here is a the result of the running that script EEPROM FIX UPDATE $ sudo bash fixeep-82573-dspd.sh eth0 eth0: is a "82573L Gigabit Ethernet Controller" This fixup is applicable to your hardware Your eeprom is up to date, no changes were made Do I still need to do anything? Also here is my EEPROM dump $ sudo ethtool -e eth0 Offset Values ------ ------ 0x0000 00 0a e4 3e ce 74 30 0b b2 ff 51 00 ff ff ff ff 0x0010 53 00 03 02 6b 02 7e 20 aa 17 9a 10 86 80 df 80 0x0020 00 00 00 20 54 7e 00 00 14 00 da 00 04 00 00 27 0x0030 c9 6c 50 31 3e 07 0b 04 8b 29 00 00 00 f0 02 0f 0x0040 08 10 00 00 04 0f ff 7f 01 4d ff ff ff ff ff ff 0x0050 14 00 1d 00 14 00 1d 00 af aa 1e 00 00 00 1d 00 0x0060 00 01 00 40 1f 12 07 40 ff ff ff ff ff ff ff ff 0x0070 ff ff ff ff ff ff ff ff ff ff ff ff ff ff 4a e0 I'd also like to note that I used eth0 every day for years and until recently never had an issue.

Read the article

Need help in setting lighttpd on Ubuntu 9.10

- by hap497

Hi, I am trying to run lighttpd on Ubuntu 9.10. I get the conf file from the doc directory of lighttpd source. $ sudo ./lighttpd -f lighttpd.conf $ ps -ef | grep lighttpd root 2094 1 0 19:40 ? 00:00:00 ./lighttpd -f lighttpd.conf This is my lighttpd.conf: $ more lighttpd.conf # lighttpd configuration file # # use it as a base for lighttpd 1.0.0 and above # # $Id: lighttpd.conf,v 1.7 2004/11/03 22:26:05 weigon Exp $ ############ Options you really have to take care of #################### ## modules to load # at least mod_access and mod_accesslog should be loaded # all other module should only be loaded if really neccesary # - saves some time # - saves memory server.modules = ( # "mod_rewrite", # "mod_redirect", # "mod_alias", "mod_access", # "mod_trigger_b4_dl", # "mod_auth", # "mod_status", # "mod_setenv", # "mod_fastcgi", # "mod_proxy", # "mod_simple_vhost", # "mod_evhost", # "mod_userdir", # "mod_cgi", # "mod_compress", # "mod_ssi", # "mod_usertrack", # "mod_expire", # "mod_secdownload", # "mod_rrdtool", "mod_accesslog" ) ## A static document-root. For virtual hosting take a look at the ## mod_simple_vhost module. server.document-root = "/srv/www/htdocs/" ## where to send error-messages to server.errorlog = "/var/log/lighttpd/error.log" # files to check for if .../ is requested index-file.names = ( "index.php", "index.html", "index.htm", "default.htm" ) ## set the event-handler (read the performance section in the manual) # server.event-handler = "freebsd-kqueue" # needed on OS X # mimetype mapping mimetype.assign = ( ".pdf" => "application/pdf", ".sig" => "application/pgp-signature", ".spl" => "application/futuresplash", ".class" => "application/octet-stream", ".ps" => "application/postscript", ".torrent" => "application/x-bittorrent", ".dvi" => "application/x-dvi", ".gz" => "application/x-gzip", ".pac" => "application/x-ns-proxy-autoconfig", ".swf" => "application/x-shockwave-flash", ".tar.gz" => "application/x-tgz", ".tgz" => "application/x-tgz", ".tar" => "application/x-tar", ".zip" => "application/zip", ".mp3" => "audio/mpeg", ".m3u" => "audio/x-mpegurl", ".wma" => "audio/x-ms-wma", ".wax" => "audio/x-ms-wax", ".ogg" => "application/ogg", ".wav" => "audio/x-wav", ".gif" => "image/gif", ".jar" => "application/x-java-archive", ".jpg" => "image/jpeg", ".jpeg" => "image/jpeg", ".png" => "image/png", ".xbm" => "image/x-xbitmap", ".xpm" => "image/x-xpixmap", ".xwd" => "image/x-xwindowdump", ".css" => "text/css", ".html" => "text/html", ".htm" => "text/html", ".js" => "text/javascript", ".asc" => "text/plain", ".c" => "text/plain", ".cpp" => "text/plain", ".log" => "text/plain", ".conf" => "text/plain", ".text" => "text/plain", ".txt" => "text/plain", ".dtd" => "text/xml", ".xml" => "text/xml", ".mpeg" => "video/mpeg", ".mpg" => "video/mpeg", ".mov" => "video/quicktime", ".qt" => "video/quicktime", ".avi" => "video/x-msvideo", ".asf" => "video/x-ms-asf", ".asx" => "video/x-ms-asf", ".wmv" => "video/x-ms-wmv", ".bz2" => "application/x-bzip", ".tbz" => "application/x-bzip-compressed-tar", ".tar.bz2" => "application/x-bzip-compressed-tar", # default mime type "" => "application/octet-stream", ) # Use the "Content-Type" extended attribute to obtain mime type if possible #mimetype.use-xattr = "enable" ## send a different Server: header ## be nice and keep it at lighttpd # server.tag = "lighttpd" #### accesslog module accesslog.filename = "/var/log/lighttpd/access.log" ## deny access the file-extensions # # ~ is for backupfiles from vi, emacs, joe, ... # .inc is often used for code includes which should in general not be part # of the document-root url.access-deny = ( "~", ".inc" ) $HTTP["url"] =~ "\.pdf$" { server.range-requests = "disable" } ## # which extensions should not be handle via static-file transfer # # .php, .pl, .fcgi are most often handled by mod_fastcgi or mod_cgi static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" ) ######### Options that are good to be but not neccesary to be changed ####### ## bind to port (default: 80) #server.port = 81 ## bind to localhost (default: all interfaces) #server.bind = "127.0.0.1" ## error-handler for status 404 #server.error-handler-404 = "/error-handler.html" #server.error-handler-404 = "/error-handler.php" ## to help the rc.scripts #server.pid-file = "/var/run/lighttpd.pid" ###### virtual hosts ## ## If you want name-based virtual hosting add the next three settings and load ## mod_simple_vhost ## ## document-root = ## virtual-server-root + virtual-server-default-host + virtual-server-docroot ## or ## virtual-server-root + http-host + virtual-server-docroot ## #simple-vhost.server-root = "/srv/www/vhosts/" #simple-vhost.default-host = "www.example.org" #simple-vhost.document-root = "/htdocs/" ## ## Format: <errorfile-prefix><status-code>.html ## -> ..../status-404.html for 'File not found' #server.errorfile-prefix = "/usr/share/lighttpd/errors/status-" #server.errorfile-prefix = "/srv/www/errors/status-" ## virtual directory listings #dir-listing.activate = "enable" ## select encoding for directory listings #dir-listing.encoding = "utf-8" ## enable debugging #debug.log-request-header = "enable" #debug.log-response-header = "enable" #debug.log-request-handling = "enable" #debug.log-file-not-found = "enable" ### only root can use these options # # chroot() to directory (default: no chroot() ) #server.chroot = "/" ## change uid to <uid> (default: don't care) #server.username = "wwwrun" ## change uid to <uid> (default: don't care) #server.groupname = "wwwrun" #### compress module #compress.cache-dir = "/var/cache/lighttpd/compress/" #compress.filetype = ("text/plain", "text/html") #### proxy module ## read proxy.txt for more info #proxy.server = ( ".php" => # ( "localhost" => # ( # "host" => "192.168.0.101", # "port" => 80 # ) # ) # ) #### fastcgi module ## read fastcgi.txt for more info ## for PHP don't forget to set cgi.fix_pathinfo = 1 in the php.ini #fastcgi.server = ( ".php" => # ( "localhost" => # ( # "socket" => "/var/run/lighttpd/php-fastcgi.s ocket", # "bin-path" => "/usr/local/bin/php-cgi" # ) # ) # ) #### CGI module #cgi.assign = ( ".pl" => "/usr/bin/perl", # ".cgi" => "/usr/bin/perl" ) # #### SSL engine #ssl.engine = "enable" #ssl.pemfile = "/etc/ssl/private/lighttpd.pem" #### status module #status.status-url = "/server-status" #status.config-url = "/server-config" #### auth module ## read authentication.txt for more info #auth.backend = "plain" #auth.backend.plain.userfile = "lighttpd.user" #auth.backend.plain.groupfile = "lighttpd.group" #auth.backend.ldap.hostname = "localhost" #auth.backend.ldap.base-dn = "dc=my-domain,dc=com" #auth.backend.ldap.filter = "(uid=$)" #auth.require = ( "/server-status" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "user=jan" # ), # "/server-config" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "valid-user" # ) # ) #### url handling modules (rewrite, redirect, access) #url.rewrite = ( "^/$" => "/server-status" ) #url.redirect = ( "^/wishlist/(.+)" => "http://www.123.org/$1" ) #### both rewrite/redirect support back reference to regex conditional using %n #$HTTP["host"] =~ "^www\.(.*)" { # url.redirect = ( "^/(.*)" => "http://%1/$1" ) #} # # define a pattern for the host url finding # %% => % sign # %0 => domain name + tld # %1 => tld # %2 => domain name without tld # %3 => subdomain 1 name # %4 => subdomain 2 name # #evhost.path-pattern = "/srv/www/vhosts/%3/htdocs/" #### expire module #expire.url = ( "/buggy/" => "access 2 hours", "/asdhas/" => "ac cess plus 1 seconds 2 minutes") #### ssi #ssi.extension = ( ".shtml" ) #### rrdtool #rrdtool.binary = "/usr/bin/rrdtool" #rrdtool.db-name = "/var/lib/lighttpd/lighttpd.rrd" #### setenv #setenv.add-request-header = ( "TRAV_ENV" => "mysql://user@host/db" ) #setenv.add-response-header = ( "X-Secret-Message" => "42" ) ## for mod_trigger_b4_dl # trigger-before-download.gdbm-filename = "/var/lib/lighttpd/trigger.db" # trigger-before-download.memcache-hosts = ( "127.0.0.1:11211" ) # trigger-before-download.trigger-url = "^/trigger/" # trigger-before-download.download-url = "^/download/" # trigger-before-download.deny-url = "http://127.0.0.1/index.html" # trigger-before-download.trigger-timeout = 10 #### variable usage: ## variable name without "." is auto prefixed by "var." and becomes "var.bar" #bar = 1 #var.mystring = "foo" ## integer add #bar += 1 ## string concat, with integer cast as string, result: "www.foo1.com" #server.name = "www." + mystring + var.bar + ".com" ## array merge #index-file.names = (foo + ".php") + index-file.names #index-file.names += (foo + ".php") #### include #include /etc/lighttpd/lighttpd-inc.conf ## same as above if you run: "lighttpd -f /etc/lighttpd/lighttpd.conf" #include "lighttpd-inc.conf" #### include_shell #include_shell "echo var.a=1" ## the above is same as: #var.a=1 When I go to browser and hit 'http://127.0.0.1', I get link not found. Any idea?

Read the article

Tomcat 7 taking ages to start up after upgrade

- by Lawrence

I recently updated my server installation from Tomcat 6 to Tomcat 7, in order to take advantage of better connection pooling. My project uses Hibernate, for object persistance, a Mysql 5.5.20 database, and memcached for caching. When I was using Tomcat 6, Tomcat would start in about 8 seconds. After moving to Tomcat 7, it now takes between 75 - 80 seconds to start (this is on a Macbook pro 15", core i7 2Ghz, 8Gb of RAM). The only thing that has really changed between during the move from Tomcat 6 to 7 has been my context.xml file, which controls the connection pooling information: <Context antiJARLocking="true" reloadable="true" path=""> <Resource name="jdbc/test-db" auth="Container" type="javax.sql.DataSource" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" testOnBorrow="true" testOnReturn="false" testWhileIdle="true" validationQuery="SELECT 1" validationQueryTimeout="20000" validationInterval="30000" timeBetweenEvictionRunsMillis="60000" logValidationErrors="true" autoReconnect="true" username="webuser" password="xxxxxxx" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://databasename.us-east-1.rds.amazonaws.com:3306/test-db" maxActive="15" minIdle="2" maxIdle="10" maxWait="10000" maxAge="7200000"/> </Context> Now, as you can see, the database is running on Amazon RDS (where our live servers are), and thus is about 200ms round trip time away from my machine. I have already checked that I have security permissions to that database from my machine, (and anyway, it connects after 75 secs, so it cant be that). My initial thought was that Tomcat 7 and hibernate are doing something weird (like pre-instantiating a bunch of connections or something), and the latency to the database is amplifying the effects. While trying to diagnose the problem, I used jstack to get a stack trace of the Tomcat 7 server while its doing its startup thing. Here is the stack trace... Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.12-b01-434 mixed mode): "Attach Listener" daemon prio=9 tid=7fa4c0038800 nid=0x10c39a000 waiting on condition [00000000] java.lang.Thread.State: RUNNABLE "Abandoned connection cleanup thread" daemon prio=5 tid=7fa4bb810000 nid=0x10f3ba000 in Object.wait() [10f3b9000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <7f40a0070> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118) - locked <7f40a0070> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134) at com.mysql.jdbc.NonRegisteringDriver$1.run(NonRegisteringDriver.java:93) "PoolCleaner[545768040:1352724902327]" daemon prio=5 tid=7fa4be852800 nid=0x10e772000 in Object.wait() [10e771000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <7f40c7c90> (a java.util.TaskQueue) at java.util.TimerThread.mainLoop(Timer.java:509) - locked <7f40c7c90> (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:462) "localhost-startStop-1" daemon prio=5 tid=7fa4bd034800 nid=0x10d66b000 runnable [10d668000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:129) at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114) at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161) at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189) - locked <7f3673be0> (a com.mysql.jdbc.util.ReadAheadInputStream) at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3014) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3467) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3456) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3997) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2468) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2629) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2713) - locked <7f366a1c0> (a com.mysql.jdbc.JDBC4Connection) at com.mysql.jdbc.ConnectionImpl.configureClientCharacterSet(ConnectionImpl.java:1930) at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3571) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2445) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2215) - locked <7f366a1c0> (a com.mysql.jdbc.JDBC4Connection) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:813) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor10.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:334) at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:278) at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182) at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:699) at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:631) at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:485) at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:143) at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116) - locked <7f34f0dc8> (a org.apache.tomcat.jdbc.pool.DataSource) at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103) at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:539) at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:237) at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) at org.apache.naming.NamingContext.lookup(NamingContext.java:843) at org.apache.naming.NamingContext.lookup(NamingContext.java:154) at org.apache.naming.NamingContext.lookup(NamingContext.java:831) at org.apache.naming.NamingContext.lookup(NamingContext.java:168) at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1061) at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:671) at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:270) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5173) - locked <7f46b07f0> (a org.apache.catalina.core.StandardContext) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <7f46b07f0> (a org.apache.catalina.core.StandardContext) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) "Catalina-startStop-1" daemon prio=5 tid=7fa4b7a5e800 nid=0x10d568000 waiting on condition [10d567000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <7f480e970> (a java.util.concurrent.FutureTask$Sync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811) at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281) at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:218) at java.util.concurrent.FutureTask.get(FutureTask.java:83) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123) - locked <7f453c630> (a org.apache.catalina.core.StandardHost) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800) - locked <7f453c630> (a org.apache.catalina.core.StandardHost) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <7f453c630> (a org.apache.catalina.core.StandardHost) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) "GC Daemon" daemon prio=2 tid=7fa4b9912800 nid=0x10d465000 in Object.wait() [10d464000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <7f4506d28> (a sun.misc.GC$LatencyLock) at sun.misc.GC$Daemon.run(GC.java:100) - locked <7f4506d28> (a sun.misc.GC$LatencyLock) "Low Memory Detector" daemon prio=5 tid=7fa4b480b800 nid=0x10c8ae000 runnable [00000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread1" daemon prio=9 tid=7fa4b480b000 nid=0x10c7ab000 waiting on condition [00000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread0" daemon prio=9 tid=7fa4b480a000 nid=0x10c6a8000 waiting on condition [00000000] java.lang.Thread.State: RUNNABLE "Signal Dispatcher" daemon prio=9 tid=7fa4b4809800 nid=0x10c5a5000 runnable [00000000] java.lang.Thread.State: RUNNABLE "Surrogate Locker Thread (Concurrent GC)" daemon prio=5 tid=7fa4b4808800 nid=0x10c4a2000 waiting on condition [00000000] java.lang.Thread.State: RUNNABLE "Finalizer" daemon prio=8 tid=7fa4b793f000 nid=0x10c297000 in Object.wait() [10c296000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <7f451c8f0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118) - locked <7f451c8f0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159) "Reference Handler" daemon prio=10 tid=7fa4b793e000 nid=0x10c194000 in Object.wait() [10c193000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <7f452e168> (a java.lang.ref.Reference$Lock) at java.lang.Object.wait(Object.java:485) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116) - locked <7f452e168> (a java.lang.ref.Reference$Lock) "main" prio=5 tid=7fa4b7800800 nid=0x104329000 waiting on condition [104327000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <7f480e9a0> (a java.util.concurrent.FutureTask$Sync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811) at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281) at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:218) at java.util.concurrent.FutureTask.get(FutureTask.java:83) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123) - locked <7f451fd90> (a org.apache.catalina.core.StandardEngine) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) - locked <7f451fd90> (a org.apache.catalina.core.StandardEngine) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <7f451fd90> (a org.apache.catalina.core.StandardEngine) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) - locked <7f451fd90> (a org.apache.catalina.core.StandardEngine) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <7f453e810> (a org.apache.catalina.core.StandardService) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) - locked <7f4506d58> (a [Lorg.apache.catalina.Service;) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <7f44f7ba0> (a org.apache.catalina.core.StandardServer) at org.apache.catalina.startup.Catalina.start(Catalina.java:684) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:451) "VM Thread" prio=9 tid=7fa4b7939800 nid=0x10c091000 runnable "Gang worker#0 (Parallel GC Threads)" prio=9 tid=7fa4b7802000 nid=0x10772b000 runnable "Gang worker#1 (Parallel GC Threads)" prio=9 tid=7fa4b7802800 nid=0x10782e000 runnable "Gang worker#2 (Parallel GC Threads)" prio=9 tid=7fa4b7803000 nid=0x107931000 runnable "Gang worker#3 (Parallel GC Threads)" prio=9 tid=7fa4b7804000 nid=0x107a34000 runnable "Gang worker#4 (Parallel GC Threads)" prio=9 tid=7fa4b7804800 nid=0x107b37000 runnable "Gang worker#5 (Parallel GC Threads)" prio=9 tid=7fa4b7805000 nid=0x107c3a000 runnable "Gang worker#6 (Parallel GC Threads)" prio=9 tid=7fa4b7805800 nid=0x107d3d000 runnable "Gang worker#7 (Parallel GC Threads)" prio=9 tid=7fa4b7806800 nid=0x107e40000 runnable "Concurrent Mark-Sweep GC Thread" prio=9 tid=7fa4b78e3800 nid=0x10bd0b000 runnable "Gang worker#0 (Parallel CMS Threads)" prio=9 tid=7fa4b78e2800 nid=0x10b305000 runnable "Gang worker#1 (Parallel CMS Threads)" prio=9 tid=7fa4b78e3000 nid=0x10b408000 runnable "VM Periodic Task Thread" prio=10 tid=7fa4b4815800 nid=0x10c9b1000 waiting on condition "Exception Catcher Thread" prio=10 tid=7fa4b7801800 nid=0x104554000 runnable JNI global references: 919 The only thing I can figure out from this is that it looks like the mysql jdbc drivers might have something to do with the long start up (the various stack traces I took during the start up process all pretty much look the same as this). Could anyone shed some light on what might be causing this? Have I done something dense in my context.xml? Is hibernate perhaps to blame?

Read the article

Inbound SIP calls through Cisco 881 NAT hang up after a few seconds

- by MasterRoot24

I've recently moved to a Cisco 881 router for my WAN link. I was previously using a Cisco Linksys WAG320N as my modem/router/WiFi AP/NAT firewall. The WAG320N is now running in bridged mode, so it's simply acting as a modem with one of it's LAN ports connected to FE4 WAN on my Cisco 881. The Cisco 881 get's a DHCP provided IP from my ISP. My LAN is part of default Vlan 1 (192.168.1.0/24). General internet connectivity is working great, I've managed to setup static NAT rules for my HTTP/HTTPS/SMTP/etc. services which are running on my LAN. I don't know whether it's worth mentioning that I've opted to use NVI NAT (ip nat enable as opposed to the traditional ip nat outside/ip nat inside) setup. My reason for this is that NVI allows NAT loopback from my LAN to the WAN IP and back in to the necessary server on the LAN. I run an Asterisk 1.8 PBX on my LAN, which connects to a SIP provider on the internet. Both inbound and outbound calls through the old setup (WAG320N providing routing/NAT) worked fine. However, since moving to the Cisco 881, inbound calls drop after around 10 seconds, whereas outbound calls work fine. The following message is logged on my Asterisk PBX: [Dec 9 15:27:45] WARNING[27734]: chan_sip.c:3641 retrans_pkt: Retransmission timeout reached on transmission [email protected] for seqno 1 (Critical Response) -- See https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions Packet timed out after 6528ms with no response [Dec 9 15:27:45] WARNING[27734]: chan_sip.c:3670 retrans_pkt: Hanging up call [email protected] - no reply to our critical packet (see https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions). (I know that this is quite a common issue - I've spend the best part of 2 days solid on this, trawling Google.) I've done as I am told and checked https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions. Referring to the section "Other SIP requests" in the page linked above, I believe that the hangup to be caused by the ACK from my SIP provider not being passed back through NAT to Asterisk on my PBX. I tried to ascertain this by dumping the packets on my WAN interface on the 881. I managed to obtain a PCAP dump of packets in/out of my WAN interface. Here's an example of an ACK being reveived by the router from my provider: 689 21.219999 193.x.x.x 188.x.x.x SIP 502 Request: ACK sip:[email protected] | However a SIP trace on the Asterisk server show's that there are no ACK's received in response to the 200 OK from my PBX: http://pastebin.com/wwHpLPPz In the past, I have been strongly advised to disable any sort of SIP ALGs on routers and/or firewalls and the many posts regarding this issue on the internet seem to support this. However, I believe on Cisco IOS, the config command to disable SIP ALG is no ip nat service sip udp port 5060 however, this doesn't appear to help the situation. To confirm that config setting is set: Router1#show running-config | include sip no ip nat service sip udp port 5060 Another interesting twist: for a short period of time, I tried another provider. Luckily, my trial account with them is still available, so I reverted my Asterisk config back to the revision before I integrated with my current provider. I then dialled in to the DDI associated with the trial trunk and the call didn't get hung up and I didn't get the error above! To me, this points at the provider, however I know, like all providers do, will say "There's no issues with our SIP proxies - it's your firewall." I'm tempted to agree with this, as this issue was not apparent with the old WAG320N router when it was doing the NAT'ing. I'm sure you'll want to see my running-config too: ! ! Last configuration change at 15:55:07 UTC Sun Dec 9 2012 by xxx version 15.2 no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime msec localtime show-timezone service timestamps log datetime msec localtime show-timezone no service password-encryption service sequence-numbers ! hostname Router1 ! boot-start-marker boot-end-marker ! ! security authentication failure rate 10 log security passwords min-length 6 logging buffered 4096 logging console critical enable secret 4 xxx ! aaa new-model ! ! aaa authentication login local_auth local ! ! ! ! ! aaa session-id common ! memory-size iomem 10 ! crypto pki trustpoint TP-self-signed-xxx enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-xxx revocation-check none rsakeypair TP-self-signed-xxx ! ! crypto pki certificate chain TP-self-signed-xxx certificate self-signed 01 quit no ip source-route no ip gratuitous-arps ip auth-proxy max-login-attempts 5 ip admission max-login-attempts 5 ! ! ! ! ! no ip bootp server ip domain name dmz.merlin.local ip domain list dmz.merlin.local ip domain list merlin.local ip name-server x.x.x.x ip inspect audit-trail ip inspect udp idle-time 1800 ip inspect dns-timeout 7 ip inspect tcp idle-time 14400 ip inspect name autosec_inspect ftp timeout 3600 ip inspect name autosec_inspect http timeout 3600 ip inspect name autosec_inspect rcmd timeout 3600 ip inspect name autosec_inspect realaudio timeout 3600 ip inspect name autosec_inspect smtp timeout 3600 ip inspect name autosec_inspect tftp timeout 30 ip inspect name autosec_inspect udp timeout 15 ip inspect name autosec_inspect tcp timeout 3600 ip cef login block-for 3 attempts 3 within 3 no ipv6 cef ! ! multilink bundle-name authenticated license udi pid CISCO881-SEC-K9 sn ! ! username xxx privilege 15 secret 4 xxx username xxx secret 4 xxx ! ! ! ! ! ip ssh time-out 60 ! ! ! ! ! ! ! ! ! interface FastEthernet0 no ip address ! interface FastEthernet1 no ip address ! interface FastEthernet2 no ip address ! interface FastEthernet3 switchport access vlan 2 no ip address ! interface FastEthernet4 ip address dhcp no ip redirects no ip unreachables no ip proxy-arp ip nat enable duplex auto speed auto ! interface Vlan1 ip address 192.168.1.1 255.255.255.0 no ip redirects no ip unreachables no ip proxy-arp ip nat enable ! interface Vlan2 ip address 192.168.0.2 255.255.255.0 ! ip forward-protocol nd ip http server ip http access-class 1 ip http authentication local ip http secure-server ip http timeout-policy idle 60 life 86400 requests 10000 ! ! no ip nat service sip udp port 5060 ip nat source list 1 interface FastEthernet4 overload ip nat source static tcp x.x.x.x 80 interface FastEthernet4 80 ip nat source static tcp x.x.x.x 443 interface FastEthernet4 443 ip nat source static tcp x.x.x.x 25 interface FastEthernet4 25 ip nat source static tcp x.x.x.x 587 interface FastEthernet4 587 ip nat source static tcp x.x.x.x 143 interface FastEthernet4 143 ip nat source static tcp x.x.x.x 993 interface FastEthernet4 993 ip nat source static tcp x.x.x.x 1723 interface FastEthernet4 1723 ! ! logging trap debugging logging facility local2 access-list 1 permit 192.168.1.0 0.0.0.255 access-list 1 permit 192.168.0.0 0.0.0.255 no cdp run ! ! ! ! control-plane ! ! banner motd Authorized Access only ! line con 0 login authentication local_auth length 0 transport output all line aux 0 exec-timeout 15 0 login authentication local_auth transport output all line vty 0 1 access-class 1 in logging synchronous login authentication local_auth length 0 transport preferred none transport input telnet transport output all line vty 2 4 access-class 1 in login authentication local_auth length 0 transport input ssh transport output all ! ! end ...and, if it's of any use, here's my Asterisk SIP config: [general] context=default ; Default context for calls allowoverlap=no ; Disable overlap dialing support. (Default is yes) udpbindaddr=0.0.0.0 ; IP address to bind UDP listen socket to (0.0.0.0 binds to all) ; Optionally add a port number, 192.168.1.1:5062 (default is port 5060) tcpenable=no ; Enable server for incoming TCP connections (default is no) tcpbindaddr=0.0.0.0 ; IP address for TCP server to bind to (0.0.0.0 binds to all interfaces) ; Optionally add a port number, 192.168.1.1:5062 (default is port 5060) srvlookup=yes ; Enable DNS SRV lookups on outbound calls ; Note: Asterisk only uses the first host ; in SRV records ; Disabling DNS SRV lookups disables the ; ability to place SIP calls based on domain ; names to some other SIP users on the Internet ; Specifying a port in a SIP peer definition or ; when dialing outbound calls will supress SRV ; lookups for that peer or call. directmedia=no ; Don't allow direct RTP media between extensions (doesn't work through NAT) externhost=<MY DYNDNS HOSTNAME> ; Our external hostname to resolve to IP and be used in NAT'ed packets localnet=192.168.1.0/24 ; Define our local network so we know which packets need NAT'ing qualify=yes ; Qualify peers by default dtmfmode=rfc2833 ; Set the default DTMF mode disallow=all ; Disallow all codecs by default allow=ulaw ; Allow G.711 u-law allow=alaw ; Allow G.711 a-law ; ---------------------- ; SIP Trunk Registration ; ---------------------- ; Orbtalk register => <MY SIP PROVIDER USER NAME>:[email protected]/<MY DDI> ; Main Orbtalk number ; ---------- ; Trunks ; ---------- [orbtalk] ; Main Orbtalk trunk type=peer insecure=invite host=sipgw3.orbtalk.co.uk nat=yes username=<MY SIP PROVIDER USER NAME> defaultuser=<MY SIP PROVIDER USER NAME> fromuser=<MY SIP PROVIDER USER NAME> secret=xxx context=inbound I really don't know where to go with this. If anyone can help me find out why these calls are being dropped off, I'd be grateful if you could chime in! Please let me know if any further info is required.

Read the article

How to configure fastcgi to work with ligttpd in ubuntu

- by michael

I am able to run lighttpd on ubuntu 9.10. But when i tried to setup fastcgi with lighttpd by putting this in the ligttpd.conf file: #### fastcgi module fastcgi.server = ( "/fastcgi_scripts/" => (( "host" => "127.0.0.1", "port" => "9098", "check-local" => "disable", "bin-path" => "/usr/local/bin/cgi-fcgi", "docroot" => "/" # remote server may use # it's own docroot )) ) This is what I get in the error.log in ligttpd: 2010-03-07 21:00:11: (log.c.166) server started 2010-03-07 21:00:11: (mod_fastcgi.c.1104) the fastcgi-backend /usr/local/bin/cgi-fcgi failed to start: 2010-03-07 21:00:11: (mod_fastcgi.c.1108) child exited with status 1 /usr/local/bin/cgi-fcgi 2010-03-07 21:00:11: (mod_fastcgi.c.1111) If you're trying to run your app as a FastCGI backend, make sure you're using the FastCGI-enabled version. If this is PHP on Gentoo, add 'fastcgi' to the USE flags. 2010-03-07 21:00:11: (mod_fastcgi.c.1399) [ERROR]: spawning fcgi failed. 2010-03-07 21:00:11: (server.c.931) Configuration of plugins failed. Going down. I do have cgi-fcgi in /usr/local/bin: $ which cgi-fcgi /usr/local/bin/cgi-fcgi '/usr/local/bin/cgi-fcgi' is the executable after I download and compile fast-cgi. Here is my lighttpd conf file: $ more lighttpd.conf # lighttpd configuration file # # use it as a base for lighttpd 1.0.0 and above # # $Id: lighttpd.conf,v 1.7 2004/11/03 22:26:05 weigon Exp $ ############ Options you really have to take care of #################### ## modules to load # at least mod_access and mod_accesslog should be loaded # all other module should only be loaded if really neccesary # - saves some time # - saves memory server.modules = ( # "mod_rewrite", # "mod_redirect", # "mod_alias", "mod_access", # "mod_trigger_b4_dl", # "mod_auth", # "mod_status", # "mod_setenv", "mod_fastcgi", # "mod_proxy", # "mod_simple_vhost", # "mod_evhost", # "mod_userdir", # "mod_cgi", # "mod_compress", # "mod_ssi", # "mod_usertrack", # "mod_expire", # "mod_secdownload", # "mod_rrdtool", "mod_accesslog" ) ## A static document-root. For virtual hosting take a look at the ## mod_simple_vhost module. server.document-root = "/srv/www/htdocs/" ## where to send error-messages to server.errorlog = "/var/log/lighttpd/error.log" # files to check for if .../ is requested index-file.names = ( "index.php", "index.html", "index.htm", "default.htm" ) ## set the event-handler (read the performance section in the manual) # server.event-handler = "freebsd-kqueue" # needed on OS X # mimetype mapping mimetype.assign = ( ".pdf" => "application/pdf", ".sig" => "application/pgp-signature", ".spl" => "application/futuresplash", ".class" => "application/octet-stream", ".ps" => "application/postscript", ".torrent" => "application/x-bittorrent", ".dvi" => "application/x-dvi", ".gz" => "application/x-gzip", ".pac" => "application/x-ns-proxy-autoconfig", ".swf" => "application/x-shockwave-flash", ".tar.gz" => "application/x-tgz", ".tgz" => "application/x-tgz", ".tar" => "application/x-tar", ".zip" => "application/zip", ".mp3" => "audio/mpeg", ".m3u" => "audio/x-mpegurl", ".wma" => "audio/x-ms-wma", ".wax" => "audio/x-ms-wax", ".ogg" => "application/ogg", ".wav" => "audio/x-wav", ".gif" => "image/gif", ".jar" => "application/x-java-archive", ".jpg" => "image/jpeg", ".jpeg" => "image/jpeg", ".png" => "image/png", ".xbm" => "image/x-xbitmap", ".xpm" => "image/x-xpixmap", ".xwd" => "image/x-xwindowdump", ".css" => "text/css", ".html" => "text/html", ".htm" => "text/html", ".js" => "text/javascript", ".asc" => "text/plain", ".c" => "text/plain", ".cpp" => "text/plain", ".log" => "text/plain", ".conf" => "text/plain", ".text" => "text/plain", ".txt" => "text/plain", ".dtd" => "text/xml", ".xml" => "text/xml", ".mpeg" => "video/mpeg", ".mpg" => "video/mpeg", ".mov" => "video/quicktime", ".qt" => "video/quicktime", ".avi" => "video/x-msvideo", ".asf" => "video/x-ms-asf", ".asx" => "video/x-ms-asf", ".wmv" => "video/x-ms-wmv", ".bz2" => "application/x-bzip", ".tbz" => "application/x-bzip-compressed-tar", ".tar.bz2" => "application/x-bzip-compressed-tar", # default mime type "" => "application/octet-stream", ) # Use the "Content-Type" extended attribute to obtain mime type if possible #mimetype.use-xattr = "enable" ## send a different Server: header ## be nice and keep it at lighttpd # server.tag = "lighttpd" #### accesslog module accesslog.filename = "/var/log/lighttpd/access.log" ## deny access the file-extensions # # ~ is for backupfiles from vi, emacs, joe, ... # .inc is often used for code includes which should in general not be part # of the document-root url.access-deny = ( "~", ".inc" ) $HTTP["url"] =~ "\.pdf$" { server.range-requests = "disable" } ## # which extensions should not be handle via static-file transfer # # .php, .pl, .fcgi are most often handled by mod_fastcgi or mod_cgi static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" ) ######### Options that are good to be but not neccesary to be changed ####### ## bind to port (default: 80) server.port = 9090 ## bind to localhost (default: all interfaces) server.bind = "127.0.0.1" ## error-handler for status 404 #server.error-handler-404 = "/error-handler.html" #server.error-handler-404 = "/error-handler.php" ## to help the rc.scripts #server.pid-file = "/var/run/lighttpd.pid" ###### virtual hosts ## ## If you want name-based virtual hosting add the next three settings and load ## mod_simple_vhost ## ## document-root = ## virtual-server-root + virtual-server-default-host + virtual-server-docroot ## or ## virtual-server-root + http-host + virtual-server-docroot ## #simple-vhost.server-root = "/srv/www/vhosts/" #simple-vhost.default-host = "www.example.org" #simple-vhost.document-root = "/htdocs/" ## ## Format: <errorfile-prefix><status-code>.html ## -> ..../status-404.html for 'File not found' #server.errorfile-prefix = "/usr/share/lighttpd/errors/status-" #server.errorfile-prefix = "/srv/www/errors/status-" ## virtual directory listings #dir-listing.activate = "enable" ## select encoding for directory listings #dir-listing.encoding = "utf-8" ## enable debugging #debug.log-request-header = "enable" #debug.log-response-header = "enable" #debug.log-request-handling = "enable" #debug.log-file-not-found = "enable" ### only root can use these options # # chroot() to directory (default: no chroot() ) #server.chroot = "/" ## change uid to <uid> (default: don't care) #server.username = "wwwrun" ## change uid to <uid> (default: don't care) #server.groupname = "wwwrun" #### compress module #compress.cache-dir = "/var/cache/lighttpd/compress/" #compress.filetype = ("text/plain", "text/html") #### proxy module ## read proxy.txt for more info #proxy.server = ( ".php" => # ( "localhost" => # ( # "host" => "192.168.0.101", # "port" => 80 # ) # ) # ) #### fastcgi module fastcgi.server = ( "/fastcgi_scripts/" => (( "host" => "127.0.0.1", "port" => 1026, "check-local" => "disable", "bin-path" => "/usr/local/bin/cgi-fcgi", #"docroot" => "/" # remote server may use # it's own docroot )) ) ## read fastcgi.txt for more info ## for PHP don't forget to set cgi.fix_pathinfo = 1 in the php.ini #fastcgi.server = ( ".php" => # ( "localhost" => # ( # "socket" => "/var/run/lighttpd/php-fastcgi.s ocket", # "bin-path" => "/usr/local/bin/php-cgi" # ) # ) # ) #### CGI module #cgi.assign = ( ".pl" => "/usr/bin/perl", # ".cgi" => "/usr/bin/perl" ) # #### SSL engine #ssl.engine = "enable" #ssl.pemfile = "/etc/ssl/private/lighttpd.pem" #### status module #status.status-url = "/server-status" #status.config-url = "/server-config" #### auth module ## read authentication.txt for more info #auth.backend = "plain" #auth.backend.plain.userfile = "lighttpd.user" #auth.backend.plain.groupfile = "lighttpd.group" #auth.backend.ldap.hostname = "localhost" #auth.backend.ldap.base-dn = "dc=my-domain,dc=com" #auth.backend.ldap.filter = "(uid=$)" #auth.require = ( "/server-status" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "user=jan" # ), # "/server-config" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "valid-user" # ) # ) #### url handling modules (rewrite, redirect, access) #url.rewrite = ( "^/$" => "/server-status" ) #url.redirect = ( "^/wishlist/(.+)" => "http://www.123.org/$1" ) #### both rewrite/redirect support back reference to regex conditional using %n #$HTTP["host"] =~ "^www\.(.*)" { # url.redirect = ( "^/(.*)" => "http://%1/$1" ) #} # # define a pattern for the host url finding # %% => % sign # %0 => domain name + tld # %1 => tld # %2 => domain name without tld # %3 => subdomain 1 name # %4 => subdomain 2 name # #evhost.path-pattern = "/srv/www/vhosts/%3/htdocs/" #### expire module #expire.url = ( "/buggy/" => "access 2 hours", "/asdhas/" => "ac cess plus 1 seconds 2 minutes") #### ssi #ssi.extension = ( ".shtml" ) #### rrdtool #rrdtool.binary = "/usr/bin/rrdtool" #rrdtool.db-name = "/var/lib/lighttpd/lighttpd.rrd" #### setenv #setenv.add-request-header = ( "TRAV_ENV" => "mysql://user@host/db" ) #setenv.add-response-header = ( "X-Secret-Message" => "42" ) ## for mod_trigger_b4_dl # trigger-before-download.gdbm-filename = "/var/lib/lighttpd/trigger.db" # trigger-before-download.memcache-hosts = ( "127.0.0.1:11211" ) # trigger-before-download.trigger-url = "^/trigger/" # trigger-before-download.download-url = "^/download/" # trigger-before-download.deny-url = "http://127.0.0.1/index.html" # trigger-before-download.trigger-timeout = 10 #### variable usage: ## variable name without "." is auto prefixed by "var." and becomes "var.bar" #bar = 1 #var.mystring = "foo" ## integer add #bar += 1 ## string concat, with integer cast as string, result: "www.foo1.com" #server.name = "www." + mystring + var.bar + ".com" ## array merge #index-file.names = (foo + ".php") + index-file.names #index-file.names += (foo + ".php") #### include #include /etc/lighttpd/lighttpd-inc.conf ## same as above if you run: "lighttpd -f /etc/lighttpd/lighttpd.conf" #include "lighttpd-inc.conf" #### include_shell #include_shell "echo var.a=1" ## the above is same as: #var.a=1 Thank you for your help.

Read the article

ServerRoot in my lighttpd.conf

- by michael

Hi, I have use the following example lighttpd.conf to launch my lighttpd. Can you please tell me where is my 'ServerRoot'? # lighttpd configuration file # # use it as a base for lighttpd 1.0.0 and above # # $Id: lighttpd.conf,v 1.7 2004/11/03 22:26:05 weigon Exp $ ############ Options you really have to take care of #################### ## modules to load # at least mod_access and mod_accesslog should be loaded # all other module should only be loaded if really neccesary # - saves some time # - saves memory server.modules = ( # "mod_rewrite", # "mod_redirect", # "mod_alias", "mod_access", # "mod_trigger_b4_dl", # "mod_auth", # "mod_status", # "mod_setenv", "mod_fastcgi", # "mod_proxy", # "mod_simple_vhost", # "mod_evhost", # "mod_userdir", # "mod_cgi", # "mod_compress", # "mod_ssi", # "mod_usertrack", # "mod_expire", # "mod_secdownload", # "mod_rrdtool", "mod_accesslog" ) ## A static document-root. For virtual hosting take a look at the ## mod_simple_vhost module. server.document-root = "/srv/www/htdocs/" ## where to send error-messages to server.errorlog = "/var/log/lighttpd/error.log" # files to check for if .../ is requested index-file.names = ( "index.php", "index.html", "index.htm", "default.htm" ) ## set the event-handler (read the performance section in the manual) # server.event-handler = "freebsd-kqueue" # needed on OS X # mimetype mapping mimetype.assign = ( ".pdf" => "application/pdf", ".sig" => "application/pgp-signature", ".spl" => "application/futuresplash", ".class" => "application/octet-stream", ".ps" => "application/postscript", ".torrent" => "application/x-bittorrent", ".dvi" => "application/x-dvi", ".gz" => "application/x-gzip", ".pac" => "application/x-ns-proxy-autoconfig", ".swf" => "application/x-shockwave-flash", ".tar.gz" => "application/x-tgz", ".tgz" => "application/x-tgz", ".tar" => "application/x-tar", ".zip" => "application/zip", ".mp3" => "audio/mpeg", ".m3u" => "audio/x-mpegurl", ".wma" => "audio/x-ms-wma", ".wax" => "audio/x-ms-wax", ".ogg" => "application/ogg", ".wav" => "audio/x-wav", ".gif" => "image/gif", ".jar" => "application/x-java-archive", ".jpg" => "image/jpeg", ".jpeg" => "image/jpeg", ".png" => "image/png", ".xbm" => "image/x-xbitmap", ".xpm" => "image/x-xpixmap", ".xwd" => "image/x-xwindowdump", ".css" => "text/css", ".html" => "text/html", ".htm" => "text/html", ".js" => "text/javascript", ".asc" => "text/plain", ".c" => "text/plain", ".cpp" => "text/plain", ".log" => "text/plain", ".conf" => "text/plain", ".text" => "text/plain", ".txt" => "text/plain", ".dtd" => "text/xml", ".xml" => "text/xml", ".mpeg" => "video/mpeg", ".mpg" => "video/mpeg", ".mov" => "video/quicktime", ".qt" => "video/quicktime", ".avi" => "video/x-msvideo", ".asf" => "video/x-ms-asf", ".asx" => "video/x-ms-asf", ".wmv" => "video/x-ms-wmv", ".bz2" => "application/x-bzip", ".tbz" => "application/x-bzip-compressed-tar", ".tar.bz2" => "application/x-bzip-compressed-tar", # default mime type "" => "application/octet-stream", ) # Use the "Content-Type" extended attribute to obtain mime type if possible #mimetype.use-xattr = "enable" ## send a different Server: header ## be nice and keep it at lighttpd # server.tag = "lighttpd" #### accesslog module accesslog.filename = "/var/log/lighttpd/access.log" ## deny access the file-extensions # # ~ is for backupfiles from vi, emacs, joe, ... # .inc is often used for code includes which should in general not be part # of the document-root url.access-deny = ( "~", ".inc" ) $HTTP["url"] =~ "\.pdf$" { server.range-requests = "disable" } ## # which extensions should not be handle via static-file transfer # # .php, .pl, .fcgi are most often handled by mod_fastcgi or mod_cgi static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" ) ######### Options that are good to be but not neccesary to be changed ####### ## bind to port (default: 80) server.port = 9090 ## bind to localhost (default: all interfaces) server.bind = "127.0.0.1" ## error-handler for status 404 #server.error-handler-404 = "/error-handler.html" #server.error-handler-404 = "/error-handler.php" ## to help the rc.scripts #server.pid-file = "/var/run/lighttpd.pid" ###### virtual hosts ## ## If you want name-based virtual hosting add the next three settings and load ## mod_simple_vhost ## ## document-root = ## virtual-server-root + virtual-server-default-host + virtual-server-docroot ## or ## virtual-server-root + http-host + virtual-server-docroot ## #simple-vhost.server-root = "/srv/www/vhosts/" #simple-vhost.default-host = "www.example.org" #simple-vhost.document-root = "/htdocs/" ## ## Format: <errorfile-prefix><status-code>.html ## -> ..../status-404.html for 'File not found' #server.errorfile-prefix = "/usr/share/lighttpd/errors/status-" #server.errorfile-prefix = "/srv/www/errors/status-" ## virtual directory listings #dir-listing.activate = "enable" ## select encoding for directory listings #dir-listing.encoding = "utf-8" ## enable debugging #debug.log-request-header = "enable" #debug.log-response-header = "enable" #debug.log-request-handling = "enable" #debug.log-file-not-found = "enable" ### only root can use these options # # chroot() to directory (default: no chroot() ) #server.chroot = "/" ## change uid to <uid> (default: don't care) #server.username = "wwwrun" ## change uid to <uid> (default: don't care) #server.groupname = "wwwrun" #### compress module #compress.cache-dir = "/var/cache/lighttpd/compress/" #compress.filetype = ("text/plain", "text/html") #### proxy module ## read proxy.txt for more info #proxy.server = ( ".php" => # ( "localhost" => # ( # "host" => "192.168.0.101", # "port" => 80 # ) # ) # ) #### fastcgi module fastcgi.server = ( "/fastcgi_scripts/" => (( "host" => "127.0.0.1", "port" => 1026, "check-local" => "disable", "bin-path" => "/usr/local/bin/cgi-fcgi", #"docroot" => "/" # remote server may use # it's own docroot )) ) ## read fastcgi.txt for more info ## for PHP don't forget to set cgi.fix_pathinfo = 1 in the php.ini #fastcgi.server = ( ".php" => # ( "localhost" => # ( # "socket" => "/var/run/lighttpd/php-fastcgi.socket", # "bin-path" => "/usr/local/bin/php-cgi" # ) # ) # ) #### CGI module #cgi.assign = ( ".pl" => "/usr/bin/perl", # ".cgi" => "/usr/bin/perl" ) # #### SSL engine #ssl.engine = "enable" #ssl.pemfile = "/etc/ssl/private/lighttpd.pem" #### status module #status.status-url = "/server-status" #status.config-url = "/server-config" #### auth module ## read authentication.txt for more info #auth.backend = "plain" #auth.backend.plain.userfile = "lighttpd.user" #auth.backend.plain.groupfile = "lighttpd.group" #auth.backend.ldap.hostname = "localhost" #auth.backend.ldap.base-dn = "dc=my-domain,dc=com" #auth.backend.ldap.filter = "(uid=$)" #auth.require = ( "/server-status" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "user=jan" # ), # "/server-config" => # ( # "method" => "digest", # "realm" => "download archiv", # "require" => "valid-user" # ) # ) #### url handling modules (rewrite, redirect, access) #url.rewrite = ( "^/$" => "/server-status" ) #url.redirect = ( "^/wishlist/(.+)" => "http://www.123.org/$1" ) #### both rewrite/redirect support back reference to regex conditional using %n #$HTTP["host"] =~ "^www\.(.*)" { # url.redirect = ( "^/(.*)" => "http://%1/$1" ) #} # # define a pattern for the host url finding # %% => % sign # %0 => domain name + tld # %1 => tld # %2 => domain name without tld # %3 => subdomain 1 name # %4 => subdomain 2 name # #evhost.path-pattern = "/srv/www/vhosts/%3/htdocs/" #### expire module #expire.url = ( "/buggy/" => "access 2 hours", "/asdhas/" => "access plus 1 seconds 2 minutes") #### ssi #ssi.extension = ( ".shtml" ) #### rrdtool #rrdtool.binary = "/usr/bin/rrdtool" #rrdtool.db-name = "/var/lib/lighttpd/lighttpd.rrd" #### setenv #setenv.add-request-header = ( "TRAV_ENV" => "mysql://user@host/db" ) #setenv.add-response-header = ( "X-Secret-Message" => "42" ) ## for mod_trigger_b4_dl # trigger-before-download.gdbm-filename = "/var/lib/lighttpd/trigger.db" # trigger-before-download.memcache-hosts = ( "127.0.0.1:11211" ) # trigger-before-download.trigger-url = "^/trigger/" # trigger-before-download.download-url = "^/download/" # trigger-before-download.deny-url = "http://127.0.0.1/index.html" # trigger-before-download.trigger-timeout = 10 #### variable usage: ## variable name without "." is auto prefixed by "var." and becomes "var.bar" #bar = 1 #var.mystring = "foo" ## integer add #bar += 1 ## string concat, with integer cast as string, result: "www.foo1.com" #server.name = "www." + mystring + var.bar + ".com" ## array merge #index-file.names = (foo + ".php") + index-file.names #index-file.names += (foo + ".php") #### include #include /etc/lighttpd/lighttpd-inc.conf ## same as above if you run: "lighttpd -f /etc/lighttpd/lighttpd.conf" #include "lighttpd-inc.conf" #### include_shell #include_shell "echo var.a=1" ## the above is same as: #var.a=1 Thank you.

Read the article

Unable to PPTP through NAT on Cisco 881

- by MasterRoot24

I'm trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections. As discussed in my other question, I'm trying to setup a Cisco 881 router to replace my old Linksys WAG320N. This same server and WAN connection worked fine with the WAG320N with no special configuration, other than allowing 1723 in through the firewall. On the Cisco 881, I'm using the newer ip nat enable or NAT NVI to setup static routes in through the firewall for the services running behind the router. My reason being that I can't run another copy of my live DNS domains internally with local IP addresses in. For the purposes of this question, though, I have rebuilt the router with ip nat inside/outside style NAT'ing, but this issue is still apparent. HTTP/SMTP/IMAP etc. all work ok from both the WAN and LAN interfaces of the router. I'm only having issues with SIP (see other question) and PPTP. My issue is that the GRE doesn't appear to be passing through NAT correctly and one end of the connection is not receiving GRE traffic when it should be, so the server hangs up the connection. Here's an example of /var/log/syslog with debug enabled in /etc/pptpd.conf: Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: MGR: Launching /usr/sbin/pptpctrl to handle client Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: local address = 192.168.1.50 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: remote address = 192.168.1.51 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: pppd options file = /etc/ppp/pptpd-options Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Client 82.132.248.216 control connection started Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 1) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Made a START CTRL CONN RPLY packet Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: I wrote 156 bytes to the client. Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Sent packet to client Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 7) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Set parameters to 100000000 maxbps, 64 window size Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Made a OUT CALL RPLY packet Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Starting call (launching pppd, opening GRE) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: pty_fd = 6 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: tty_fd = 7 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: I wrote 32 bytes to the client. Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Sent packet to client Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): local address = 192.168.1.50 Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): remote address = 192.168.1.51 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Dec 11 21:06:30 <HOSTNAME> pppd[22627]: pppd 2.4.5 started by root, uid 0 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Using interface ppp0 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Connect: ppp0 <--> /dev/pts/3 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: GRE: Bad checksum from pppd. Dec 11 21:06:31 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 15) Dec 11 21:06:31 <HOSTNAME> pptpd[22626]: CTRL: Got a SET LINK INFO packet with standard ACCMs Dec 11 21:07:00 <HOSTNAME> pppd[22627]: LCP: timeout sending Config-Requests Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Connection terminated. Dec 11 21:07:00 <HOSTNAME> avahi-daemon[1042]: Withdrawing workstation service for ppp0. Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Modem hangup Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Exit. Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: GRE: read(fd=6,buffer=6075a0,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Reaping child PPP[22627] Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Client 82.132.248.216 control connection finished Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Exiting now Dec 11 21:07:00 <HOSTNAME> pptpd[5803]: MGR: Reaped child 22626 As far as Cisco are concerned, all I need is ip nat source static tcp <SERVER LAN IP> 1723 interface FastEthernet4 1723 but of course this doesn't seem to the be helping the GRE traffic through as it should. Trying the connection to the LAN IP of the server from the same LAN as the server (behind the router), the PPTP connection works fine, so I'm confident that the server's config is ok. Furthermore, all I needed on my WAG320N was to open 1723 in the firewall. Here's my current router config: ! ! Last configuration change at 20:20:15 UTC Tue Dec 11 2012 by xxx version 15.2 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname xxx ! boot-start-marker boot-end-marker ! ! enable secret 4 xxxx ! aaa new-model ! ! aaa authentication login local_auth local ! ! ! ! ! aaa session-id common ! memory-size iomem 10 ! crypto pki trustpoint TP-self-signed-xxx enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-xxx revocation-check none rsakeypair TP-self-signed-xxx ! ! crypto pki certificate chain TP-self-signed-xxx certificate self-signed 01 xxx quit ip gratuitous-arps ip auth-proxy max-login-attempts 5 ip admission max-login-attempts 5 ! ! ! ! ! ip domain list dmz.xxx.local ip domain list xxx.local ip domain name dmz.xxx.local ip name-server 192.168.1.x ip cef login block-for 3 attempts 3 within 3 no ipv6 cef ! ! multilink bundle-name authenticated license udi pid CISCO881-SEC-K9 sn xxx ! ! username admin privilege 15 secret 4 xxx username joe secret 4 xxx ! ! ! ! ! ip ssh time-out 60 ! ! ! ! ! ! ! ! ! interface FastEthernet0 no ip address ! interface FastEthernet1 no ip address ! interface FastEthernet2 no ip address ! interface FastEthernet3 switchport access vlan 2 no ip address ! interface FastEthernet4 ip address dhcp ip nat enable duplex auto speed auto ! interface Vlan1 ip address 192.168.1.x 255.255.255.0 no ip redirects no ip unreachables no ip proxy-arp ip nat enable ! interface Vlan2 ip address 192.168.0.x 255.255.255.0 ! ip forward-protocol nd ip http server ip http access-class 1 ip http authentication local ip http secure-server ! ! ip nat source list 1 interface FastEthernet4 overload ip nat source list 2 interface FastEthernet4 overload ip nat source static tcp 192.168.1.x 1723 interface FastEthernet4 1723 ! ! access-list 1 permit 192.168.0.0 0.0.0.255 access-list 2 permit 192.168.1.0 0.0.0.255 ! ! ! ! control-plane ! ! banner motd Authorized Access only ! line con 0 exec-timeout 15 0 login authentication local_auth line aux 0 exec-timeout 15 0 login authentication local_auth line vty 0 4 access-class 2 in login authentication local_auth length 0 transport input all ! ! end UPDATE 16/12/2012: The only progress that I have been able to make on this issue is that I'm confident that the issue is caused by the GRE tunnels (which are required for the PPTP connection to complete) are being blocked. When attempting a connection, I can see in show ip nat nvi translations that both a TCP translation on 1723 is setup and also a GRE translation is setup also. I appear to be able to see GRE related packets on the LAN that the server is on, so I am lead to believe that the server is sending(?) GRE packets, however running Wireshark on a client PC when attempting a connection shows absolutely no GRE packets. Whilst there are no configuration directives in my config posted above (that I can pin point) which would specifically block them, it would appear that the GRE packets are not being allowed in/out of the router's firewall, even though a NAT translation entry is setup to the server's LAN address. Would anyone be able to provide me with some help to ensure that GRE packets are not blocked by the router's firewall, so that this can be ruled out as a possible issue please?

Read the article

Slow filesystem access

- by danneh3826

I'm trying to diagnose a slow filesystem issue on a server I look after. It's been ongoing for quite some time, and I've run out of ideas as to what I can try. Here's the thick of it. The server itself is a Dell Poweredge T310. It has 4 SAS hard drives in it, configured at RAID5, and is running Citrix XenServer 5.6. The VM is a (relatively) old Debian 5.0.6 installation. It's given 4 cores, and 4Gb's of RAM. It has 3 volumes. A 10Gb volume (ext3) for the system, 980Gb volume (xfs) for data (~94% full), and another 200Gb volume (xfs) for data (~13% full). Now here's the weird thing. Read/write access to the 980Gb volume is really slow. I might get 5Mb/s out of it if I'm lucky. At first I figured it was actually disk access in the system, or at a hypervisor level, but ruled that out entirely as other VMs on the same host are running perfectly fine (a good couple hundred Mb/s disk r/w access). So then I started to target this particular VM. I started thinking it was XFS, but to prove it I wasn't going to attempt to change the filesystem on the 980Gb drive, with years and years of billions of files on there. So I provisioned the 200Gb drive, and did the same read/write test (basically dd), and got a good couple hundred Mb/s r/w access to it. So that ruled out the VM, the hardware, and the filesystem type. There's also a lot of these in /var/log/kern.log; (sorry, this is quite long) Sep 4 10:16:59 uriel kernel: [32571790.564689] httpd: page allocation failure. order:5, mode:0x4020 Sep 4 10:16:59 uriel kernel: [32571790.564693] Pid: 7318, comm: httpd Not tainted 2.6.32-4-686-bigmem #1 Sep 4 10:16:59 uriel kernel: [32571790.564696] Call Trace: Sep 4 10:16:59 uriel kernel: [32571790.564705] [<c1092a4d>] ? __alloc_pages_nodemask+0x476/0x4e0 Sep 4 10:16:59 uriel kernel: [32571790.564711] [<c1092ac3>] ? __get_free_pages+0xc/0x17 Sep 4 10:16:59 uriel kernel: [32571790.564716] [<c10b632e>] ? __kmalloc+0x30/0x128 Sep 4 10:16:59 uriel kernel: [32571790.564722] [<c11dd774>] ? pskb_expand_head+0x4f/0x157 Sep 4 10:16:59 uriel kernel: [32571790.564727] [<c11ddbbf>] ? __pskb_pull_tail+0x41/0x1fb Sep 4 10:16:59 uriel kernel: [32571790.564732] [<c11e4882>] ? dev_queue_xmit+0xe4/0x38e Sep 4 10:16:59 uriel kernel: [32571790.564738] [<c1205902>] ? ip_finish_output+0x0/0x5c Sep 4 10:16:59 uriel kernel: [32571790.564742] [<c12058c7>] ? ip_finish_output2+0x187/0x1c2 Sep 4 10:16:59 uriel kernel: [32571790.564747] [<c1204dc8>] ? ip_local_out+0x15/0x17 Sep 4 10:16:59 uriel kernel: [32571790.564751] [<c12055a9>] ? ip_queue_xmit+0x31e/0x379 Sep 4 10:16:59 uriel kernel: [32571790.564758] [<c1279a90>] ? _spin_lock_bh+0x8/0x1e Sep 4 10:16:59 uriel kernel: [32571790.564767] [<eda15a8d>] ? __nf_ct_refresh_acct+0x66/0xa4 [nf_conntrack] Sep 4 10:16:59 uriel kernel: [32571790.564773] [<c103bf42>] ? _local_bh_enable_ip+0x16/0x6e Sep 4 10:16:59 uriel kernel: [32571790.564779] [<c1214593>] ? tcp_transmit_skb+0x595/0x5cc Sep 4 10:16:59 uriel kernel: [32571790.564785] [<c1005c4f>] ? xen_restore_fl_direct_end+0x0/0x1 Sep 4 10:16:59 uriel kernel: [32571790.564791] [<c12165ea>] ? tcp_write_xmit+0x7a3/0x874 Sep 4 10:16:59 uriel kernel: [32571790.564796] [<c121203a>] ? tcp_ack+0x1611/0x1802 Sep 4 10:16:59 uriel kernel: [32571790.564801] [<c10055ec>] ? xen_force_evtchn_callback+0xc/0x10 Sep 4 10:16:59 uriel kernel: [32571790.564806] [<c121392f>] ? tcp_established_options+0x1d/0x8b Sep 4 10:16:59 uriel kernel: [32571790.564811] [<c1213be4>] ? tcp_current_mss+0x38/0x53 Sep 4 10:16:59 uriel kernel: [32571790.564816] [<c1216701>] ? __tcp_push_pending_frames+0x1e/0x50 Sep 4 10:16:59 uriel kernel: [32571790.564821] [<c1212246>] ? tcp_data_snd_check+0x1b/0xd2 Sep 4 10:16:59 uriel kernel: [32571790.564825] [<c1212de3>] ? tcp_rcv_established+0x5d0/0x626 Sep 4 10:16:59 uriel kernel: [32571790.564831] [<c121902c>] ? tcp_v4_do_rcv+0x15f/0x2cf Sep 4 10:16:59 uriel kernel: [32571790.564835] [<c1219561>] ? tcp_v4_rcv+0x3c5/0x5c0 Sep 4 10:16:59 uriel kernel: [32571790.564841] [<c120197e>] ? ip_local_deliver_finish+0x10c/0x18c Sep 4 10:16:59 uriel kernel: [32571790.564846] [<c12015a4>] ? ip_rcv_finish+0x2c4/0x2d8 Sep 4 10:16:59 uriel kernel: [32571790.564852] [<c11e3b71>] ? netif_receive_skb+0x3bb/0x3d6 Sep 4 10:16:59 uriel kernel: [32571790.564864] [<ed823efc>] ? xennet_poll+0x9b8/0xafc [xen_netfront] Sep 4 10:16:59 uriel kernel: [32571790.564869] [<c11e40ee>] ? net_rx_action+0x96/0x194 Sep 4 10:16:59 uriel kernel: [32571790.564874] [<c103bd4c>] ? __do_softirq+0xaa/0x151 Sep 4 10:16:59 uriel kernel: [32571790.564878] [<c103be24>] ? do_softirq+0x31/0x3c Sep 4 10:16:59 uriel kernel: [32571790.564883] [<c103befa>] ? irq_exit+0x26/0x58 Sep 4 10:16:59 uriel kernel: [32571790.564890] [<c118ff9f>] ? xen_evtchn_do_upcall+0x12c/0x13e Sep 4 10:16:59 uriel kernel: [32571790.564896] [<c1008c3f>] ? xen_do_upcall+0x7/0xc Sep 4 10:16:59 uriel kernel: [32571790.564899] Mem-Info: Sep 4 10:16:59 uriel kernel: [32571790.564902] DMA per-cpu: Sep 4 10:16:59 uriel kernel: [32571790.564905] CPU 0: hi: 0, btch: 1 usd: 0 Sep 4 10:16:59 uriel kernel: [32571790.564908] CPU 1: hi: 0, btch: 1 usd: 0 Sep 4 10:16:59 uriel kernel: [32571790.564911] CPU 2: hi: 0, btch: 1 usd: 0 Sep 4 10:16:59 uriel kernel: [32571790.564914] CPU 3: hi: 0, btch: 1 usd: 0 Sep 4 10:16:59 uriel kernel: [32571790.564916] Normal per-cpu: Sep 4 10:16:59 uriel kernel: [32571790.564919] CPU 0: hi: 186, btch: 31 usd: 175 Sep 4 10:16:59 uriel kernel: [32571790.564922] CPU 1: hi: 186, btch: 31 usd: 165 Sep 4 10:16:59 uriel kernel: [32571790.564925] CPU 2: hi: 186, btch: 31 usd: 30 Sep 4 10:16:59 uriel kernel: [32571790.564928] CPU 3: hi: 186, btch: 31 usd: 140 Sep 4 10:16:59 uriel kernel: [32571790.564931] HighMem per-cpu: Sep 4 10:16:59 uriel kernel: [32571790.564933] CPU 0: hi: 186, btch: 31 usd: 159 Sep 4 10:16:59 uriel kernel: [32571790.564936] CPU 1: hi: 186, btch: 31 usd: 22 Sep 4 10:16:59 uriel kernel: [32571790.564939] CPU 2: hi: 186, btch: 31 usd: 24 Sep 4 10:16:59 uriel kernel: [32571790.564942] CPU 3: hi: 186, btch: 31 usd: 13 Sep 4 10:16:59 uriel kernel: [32571790.564947] active_anon:485974 inactive_anon:121138 isolated_anon:0 Sep 4 10:16:59 uriel kernel: [32571790.564948] active_file:75215 inactive_file:79510 isolated_file:0 Sep 4 10:16:59 uriel kernel: [32571790.564949] unevictable:0 dirty:516 writeback:15 unstable:0 Sep 4 10:16:59 uriel kernel: [32571790.564950] free:230770 slab_reclaimable:36661 slab_unreclaimable:21249 Sep 4 10:16:59 uriel kernel: [32571790.564952] mapped:20016 shmem:29450 pagetables:5600 bounce:0 Sep 4 10:16:59 uriel kernel: [32571790.564958] DMA free:2884kB min:72kB low:88kB high:108kB active_anon:0kB inactive_anon:0kB active_file:5692kB inactive_file:724kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15872kB mlocked:0kB dirty:8kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:5112kB slab_unreclaimable:156kB kernel_stack:56kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Sep 4 10:16:59 uriel kernel: [32571790.564964] lowmem_reserve[]: 0 698 4143 4143 Sep 4 10:16:59 uriel kernel: [32571790.564977] Normal free:143468kB min:3344kB low:4180kB high:5016kB active_anon:56kB inactive_anon:2068kB active_file:131812kB inactive_file:131728kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:715256kB mlocked:0kB dirty:156kB writeback:0kB mapped:308kB shmem:4kB slab_reclaimable:141532kB slab_unreclaimable:84840kB kernel_stack:1928kB pagetables:22400kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Sep 4 10:16:59 uriel kernel: [32571790.564983] lowmem_reserve[]: 0 0 27559 27559 Sep 4 10:16:59 uriel kernel: [32571790.564995] HighMem free:776728kB min:512kB low:4636kB high:8760kB active_anon:1943840kB inactive_anon:482484kB active_file:163356kB inactive_file:185588kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3527556kB mlocked:0kB dirty:1900kB writeback:60kB mapped:79756kB shmem:117796kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Sep 4 10:16:59 uriel kernel: [32571790.565001] lowmem_reserve[]: 0 0 0 0 Sep 4 10:16:59 uriel kernel: [32571790.565011] DMA: 385*4kB 16*8kB 3*16kB 9*32kB 6*64kB 2*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2900kB Sep 4 10:16:59 uriel kernel: [32571790.565032] Normal: 21505*4kB 6508*8kB 273*16kB 24*32kB 3*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 143412kB Sep 4 10:16:59 uriel kernel: [32571790.565054] HighMem: 949*4kB 8859*8kB 7063*16kB 6186*32kB 4631*64kB 727*128kB 6*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 776604kB Sep 4 10:16:59 uriel kernel: [32571790.565076] 198980 total pagecache pages Sep 4 10:16:59 uriel kernel: [32571790.565079] 14850 pages in swap cache Sep 4 10:16:59 uriel kernel: [32571790.565082] Swap cache stats: add 2556273, delete 2541423, find 82961339/83153719 Sep 4 10:16:59 uriel kernel: [32571790.565085] Free swap = 250592kB Sep 4 10:16:59 uriel kernel: [32571790.565087] Total swap = 385520kB Sep 4 10:16:59 uriel kernel: [32571790.575454] 1073152 pages RAM Sep 4 10:16:59 uriel kernel: [32571790.575458] 888834 pages HighMem Sep 4 10:16:59 uriel kernel: [32571790.575461] 11344 pages reserved Sep 4 10:16:59 uriel kernel: [32571790.575463] 1090481 pages shared Sep 4 10:16:59 uriel kernel: [32571790.575465] 737188 pages non-shared Now, I've no idea what this means. There's plenty of free memory; total used free shared buffers cached Mem: 4247232 3455904 791328 0 5348 736412 -/+ buffers/cache: 2714144 1533088 Swap: 385520 131004 254516 Though now I see the swap is relatively low in size, but would that matter? I've been starting to think about fragmentation, or inode usage on that large partition, but a recent fsck on it showed is as only like 0.5% fragmented. Which leaves me with inode usage, but how much of an effect really would a large inode table or filesystem TOC have? I've love to hear people's opinions on this. It's driving me potty! df -h output; Filesystem Size Used Avail Use% Mounted on /dev/xvda1 9.5G 6.6G 2.4G 74% / tmpfs 2.1G 0 2.1G 0% /lib/init/rw udev 10M 520K 9.5M 6% /dev tmpfs 2.1G 0 2.1G 0% /dev/shm /dev/xvdb 980G 921G 59G 94% /data

Read the article

Maven Error - Expected START_TAG or END_TAG not TEXT

- by onepotato

I am setting up a spring mvc web application + hibernate jpa + maven from scratch using Eclipse Indigo. I am stuck in this error when doing a Maven build. [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error installing artifact's metadata: Error installing metadata: Error updating group repository metadata expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<extension>war</... @13:25) [INFO] ------------------------------------------------------------------------ I tried googling but can't find a solution that works for me. I even search the whole project for the text <extension>war</ and mysteriously, there is no text like this in my project. However, in the tomcat web.xml there are a lot of <extension> tag, but I doubt that it has something to do in this error because I never touched that web.xml Here is my pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mycompany.applicationname</groupId> <artifactId>Application MVC</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>Maven Application Webapp</name> <url>http://maven.apache.org</url> <properties> <spring.version>3.0.3.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId> <version>1.0.0.Final</version> </dependency> </dependencies> <build> <finalName>ApplicationName</finalName> </build> </project> As Funtik has suggested, I did a build with -X. Here is the stacktrace. [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error installing artifact's metadata: Error installing metadata: Error updating group repository metadata expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<extension>war</... @13:25) [INFO] ------------------------------------------------------------------------ [DEBUG] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Error installing artifact's metadata: Error installing metadata: Error updating group repository metadata at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:583) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:592) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.MojoExecutionException: Error installing artifact's metadata: Error installing metadata: Error updating group repository metadata at org.apache.maven.plugin.install.InstallMojo.execute(InstallMojo.java:143) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558) ... 16 more Caused by: org.apache.maven.artifact.installer.ArtifactInstallationException: Error installing artifact's metadata: Error installing metadata: Error updating group repository metadata at org.apache.maven.artifact.installer.DefaultArtifactInstaller.install(DefaultArtifactInstaller.java:91) at org.apache.maven.plugin.install.InstallMojo.execute(InstallMojo.java:105) ... 18 more Caused by: org.apache.maven.artifact.repository.metadata.RepositoryMetadataInstallationException: Error installing metadata: Error updating group repository metadata at org.apache.maven.artifact.repository.metadata.DefaultRepositoryMetadataManager.install(DefaultRepositoryMetadataManager.java:463) at org.apache.maven.artifact.installer.DefaultArtifactInstaller.install(DefaultArtifactInstaller.java:79) ... 19 more Caused by: org.apache.maven.artifact.repository.metadata.RepositoryMetadataStoreException: Error updating group repository metadata at org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.storeInLocalRepository(AbstractRepositoryMetadata.java:76) at org.apache.maven.artifact.repository.metadata.DefaultRepositoryMetadataManager.install(DefaultRepositoryMetadataManager.java:459) ... 20 more Caused by: org.codehaus.plexus.util.xml.pull.XmlPullParserException: expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<extension>war</... @13:25) at org.codehaus.plexus.util.xml.pull.MXParser.nextTag(MXParser.java:1083) at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.parseVersioning(MetadataXpp3Reader.java:513) at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.parseMetadata(MetadataXpp3Reader.java:352) at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:866) at org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.updateRepositoryMetadata(AbstractRepositoryMetadata.java:98) at org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.storeInLocalRepository(AbstractRepositoryMetadata.java:68) ... 21 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2 seconds [INFO] Finished at: Thu Jun 27 17:36:23 SGT 2013 [INFO] Final Memory: 9M/16M [INFO] ------------------------------------------------------------------------ web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <display-name>Adjustment Tool</display-name> <servlet> <servlet-name>mvc-dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>mvc-dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app> Any ideas?

Read the article

Tomcat6 can't connect to MySql (The driver has not received any packets from the server)

- by Tobias Wiesenthal

Hi all, i'm running an Apache Tomcat 6.0.20 / MySQL 5.1.37-lubuntu / sun-java6-jdk /sun-java6-jre / sun-java6-bin on my local machine using Ubuntu 9.10 as OS. I'm trying to get a simple DB-query example running for 2 days now, but i still get this Exception: org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)" org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause javax.servlet.ServletException: javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)" org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791) org.apache.jsp.index_jsp._jspService(index_jsp.java:104) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)" org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(QueryTagSupport.java:285) org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(QueryTagSupport.java:168) org.apache.jsp.index_jsp._jspx_meth_sql_005fquery_005f0(index_jsp.java:274) org.apache.jsp.index_jsp._jspx_meth_c_005fotherwise_005f0(index_jsp.java:216) org.apache.jsp.index_jsp._jspx_meth_c_005fchoose_005f0(index_jsp.java:130) org.apache.jsp.index_jsp._jspService(index_jsp.java:93) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) my web.xml looks like this : <?xml version="1.0" encoding="utf-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <resource-ref> <description>DB Connection</description> <res-ref-name>jdbc/testDB</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> </web-app> the context.xml looks like this : <?xml version="1.0" encoding="UTF-8"?> <Context path="/my1stApp" docBase="/var/www/jsp/my1stApp" debug="5" reloadable="true" crossContext="true"> <Resource name="jdbc/testDB" auth="Container" type="javax.sql.DataSource" maxActive="5" maxIdle="5" maxWait="10000" username="user" password="password" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/some"/> </Context> and the jsp file looks like this: <%@ page contentType="text/html" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %> <html> <head> <title>DroneLootTool</title> </head> <body bgcolor="white"> <sql:query var="res" dataSource="jdbc/testDB"> select name, othername from mytable </sql:query> <h2>Results</h2> <c:forEach var="row" items="${res.rows}"> Name ${row.name}<br/> MoreName ${row.othername}<br/><br/> </c:forEach> </body> </html> read lots of forum entries / tried lots of different settings (always changed back to original settings when it didnt' work) set TOMCAT6_SECURITY=no in /etc/default/tomcat6 because TOMCAT6_SECURITY=yes was causing trouble too the skip-networking flag is not set for the DB (BIND 127.0.0.1 is set) firewall is swiched off (sudo ufw disable) MySQL works (tested several times with user used in this skript) telnet localhost 3306 says Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. The TestConnection.java produced the following output: me@my-laptop:~/Desktop$ java -classpath '/usr/share/java/mysql.jar:./' TestConnection com.mysql.jdbc.Driver jdbc:mysql://localhost:3306/testDB myuser mypassword com.mysql.jdbc.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:298) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:185) at TestConnection.checkConnection(TestConnection.java:40) at TestConnection.main(TestConnection.java:21) Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070) at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:666) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1069) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2031) ... 7 more Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2431) at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:590) ... 9 more Connection failed. i don't know if there is a difference between the way the java driver connects to the DB and the Perl DBI module does, but this PERL skript works #!/usr/bin/perl -w use CGI; use DBI; use strict; print CGI::header(); my $dbh = DBI->connect("dbi:mysql:some:localhost", "user", "password"); my $sSql = "SELECT * from mytable"; my $ppl = $dbh->selectall_arrayref( $sSql ); foreach my $pl (@$ppl) { my @array = @$pl; print @array; } $dbh->disconnect; enabled --log-warnings on the mysql, but i didn't get any new warnings. When i was searching the logs for warnings i found this messages when i restart the tomcat, don't know if it helps to find the problem : Feb 2 19:50:37 tobias-laptop jsvc.exec[3129]: 02.02.2010 19:50:37 org.apache.catalina.startup.HostConfig checkResources#012INFO: Undeploying context [/myapp] Feb 2 19:50:37 tobias-laptop jsvc.exec[3129]: 02.02.2010 19:50:37 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads#012SCHWERWIEGEND: A web application appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak. Feb 2 19:50:37 tobias-laptop jsvc.exec[3129]: 02.02.2010 19:50:37 org.apache.catalina.startup.HostConfig deployDescriptor#012INFO: Deploying configuration descriptor myapp.xml

Read the article

Azure Mobile Services: what files does it consist of?

- by svdoever

Azure Mobile Services is a platform that provides a small set of functionality consisting of authentication, custom data tables, custom API’s, scheduling scripts and push notifications to be used as the back-end of a mobile application or if you want, any application or web site. As described in my previous post Azure Mobile Services: lessons learned the documentation on what can be used in the custom scripts is a bit minimalistic. The list below of all files the complete Azure Mobile Services platform consists of ca shed some light on what is available in the platform. In following posts I will provide more detailed information on what we can conclude from this list of files. Below are the available files as available in the Azure Mobile Services platform. The bold files are files that describe your data model, api scripts, scheduler scripts and table scripts. Those are the files you configure/construct to provide the “configuration”/implementation of you mobile service. The files are located in a folder like C:\DWASFiles\Sites\youreservice\VirtualDirectory0\site\wwwroot. One file is missing in the list below and that is the event log file C:\DWASFiles\Sites\youreservice\VirtualDirectory0\site\LogFiles\eventlog.xml where your messages written with for example console.log() and exception catched by the system are written. NOTA BENE: the Azure Mobile Services system is a system that is under full development, new releases may change the list of files. ./app.js ./App_Data/config/datamodel.json ./App_Data/config/scripts/api/youreapi.js ./App_Data/config/scripts/api/youreapi.json ./App_Data/config/scripts/scheduler/placeholder ./App_Data/config/scripts/scheduler/youresheduler.js ./App_Data/config/scripts/shared/placeholder ./App_Data/config/scripts/table/placeholder ./App_Data/config/scripts/table/yourtable.insert.js ./App_Data/config/scripts/table/yourtable.update.js ./App_Data/config/scripts/table/yourtable.delete.js ./App_Data/config/scripts/table/yourtable.read.js ./node_modules/apn/index.js ./node_modules/apn/lib/connection.js ./node_modules/apn/lib/device.js ./node_modules/apn/lib/errors.js ./node_modules/apn/lib/feedback.js ./node_modules/apn/lib/notification.js ./node_modules/apn/lib/util.js ./node_modules/apn/node_modules/q/package.json ./node_modules/apn/node_modules/q/q.js ./node_modules/apn/package.json ./node_modules/azure/lib/azure.js ./node_modules/azure/lib/cli/blobUtils.js ./node_modules/azure/lib/cli/cacheUtils.js ./node_modules/azure/lib/cli/callbackAggregator.js ./node_modules/azure/lib/cli/cert.js ./node_modules/azure/lib/cli/channel.js ./node_modules/azure/lib/cli/cli.js ./node_modules/azure/lib/cli/commands/account.js ./node_modules/azure/lib/cli/commands/config.js ./node_modules/azure/lib/cli/commands/deployment.js ./node_modules/azure/lib/cli/commands/deployment_.js ./node_modules/azure/lib/cli/commands/help.js ./node_modules/azure/lib/cli/commands/log.js ./node_modules/azure/lib/cli/commands/log_.js ./node_modules/azure/lib/cli/commands/repository.js ./node_modules/azure/lib/cli/commands/repository_.js ./node_modules/azure/lib/cli/commands/service.js ./node_modules/azure/lib/cli/commands/site.js ./node_modules/azure/lib/cli/commands/site_.js ./node_modules/azure/lib/cli/commands/vm.js ./node_modules/azure/lib/cli/common.js ./node_modules/azure/lib/cli/constants.js ./node_modules/azure/lib/cli/generate-psm1-utils.js ./node_modules/azure/lib/cli/generate-psm1.js ./node_modules/azure/lib/cli/iaas/blobserviceex.js ./node_modules/azure/lib/cli/iaas/deleteImage.js ./node_modules/azure/lib/cli/iaas/image.js ./node_modules/azure/lib/cli/iaas/upload/blobInfo.js ./node_modules/azure/lib/cli/iaas/upload/bufferStream.js ./node_modules/azure/lib/cli/iaas/upload/intSet.js ./node_modules/azure/lib/cli/iaas/upload/jobTracker.js ./node_modules/azure/lib/cli/iaas/upload/pageBlob.js ./node_modules/azure/lib/cli/iaas/upload/streamMerger.js ./node_modules/azure/lib/cli/iaas/upload/uploadVMImage.js ./node_modules/azure/lib/cli/iaas/upload/vhdTools.js ./node_modules/azure/lib/cli/keyFiles.js ./node_modules/azure/lib/cli/patch-winston.js ./node_modules/azure/lib/cli/templates/node/iisnode.yml ./node_modules/azure/lib/cli/utils.js ./node_modules/azure/lib/diagnostics/logger.js ./node_modules/azure/lib/http/webresource.js ./node_modules/azure/lib/serviceruntime/fileinputchannel.js ./node_modules/azure/lib/serviceruntime/goalstatedeserializer.js ./node_modules/azure/lib/serviceruntime/namedpipeinputchannel.js ./node_modules/azure/lib/serviceruntime/namedpipeoutputchannel.js ./node_modules/azure/lib/serviceruntime/protocol1runtimeclient.js ./node_modules/azure/lib/serviceruntime/protocol1runtimecurrentstateclient.js ./node_modules/azure/lib/serviceruntime/protocol1runtimegoalstateclient.js ./node_modules/azure/lib/serviceruntime/roleenvironment.js ./node_modules/azure/lib/serviceruntime/runtimekernel.js ./node_modules/azure/lib/serviceruntime/runtimeversionmanager.js ./node_modules/azure/lib/serviceruntime/runtimeversionprotocolclient.js ./node_modules/azure/lib/serviceruntime/xmlcurrentstateserializer.js ./node_modules/azure/lib/serviceruntime/xmlgoalstatedeserializer.js ./node_modules/azure/lib/serviceruntime/xmlroleenvironmentdatadeserializer.js ./node_modules/azure/lib/services/blob/blobservice.js ./node_modules/azure/lib/services/blob/hmacsha256sign.js ./node_modules/azure/lib/services/blob/models/blobresult.js ./node_modules/azure/lib/services/blob/models/blocklistresult.js ./node_modules/azure/lib/services/blob/models/containeraclresult.js ./node_modules/azure/lib/services/blob/models/containerresult.js ./node_modules/azure/lib/services/blob/models/leaseresult.js ./node_modules/azure/lib/services/blob/models/listblobsresultcontinuation.js ./node_modules/azure/lib/services/blob/models/listcontainersresultcontinuation.js ./node_modules/azure/lib/services/blob/models/servicepropertiesresult.js ./node_modules/azure/lib/services/blob/sharedaccesssignature.js ./node_modules/azure/lib/services/blob/sharedkey.js ./node_modules/azure/lib/services/blob/sharedkeylite.js ./node_modules/azure/lib/services/core/connectionstringparser.js ./node_modules/azure/lib/services/core/exponentialretrypolicyfilter.js ./node_modules/azure/lib/services/core/linearretrypolicyfilter.js ./node_modules/azure/lib/services/core/servicebusserviceclient.js ./node_modules/azure/lib/services/core/servicebussettings.js ./node_modules/azure/lib/services/core/serviceclient.js ./node_modules/azure/lib/services/core/servicemanagementclient.js ./node_modules/azure/lib/services/core/servicemanagementsettings.js ./node_modules/azure/lib/services/core/servicesettings.js ./node_modules/azure/lib/services/core/storageserviceclient.js ./node_modules/azure/lib/services/core/storageservicesettings.js ./node_modules/azure/lib/services/queue/models/listqueuesresultcontinuation.js ./node_modules/azure/lib/services/queue/models/queuemessageresult.js ./node_modules/azure/lib/services/queue/models/queueresult.js ./node_modules/azure/lib/services/queue/models/servicepropertiesresult.js ./node_modules/azure/lib/services/queue/queueservice.js ./node_modules/azure/lib/services/serviceBus/models/acstokenresult.js ./node_modules/azure/lib/services/serviceBus/models/queuemessageresult.js ./node_modules/azure/lib/services/serviceBus/models/queueresult.js ./node_modules/azure/lib/services/serviceBus/models/ruleresult.js ./node_modules/azure/lib/services/serviceBus/models/subscriptionresult.js ./node_modules/azure/lib/services/serviceBus/models/topicresult.js ./node_modules/azure/lib/services/serviceBus/servicebusservice.js ./node_modules/azure/lib/services/serviceBus/wrap.js ./node_modules/azure/lib/services/serviceBus/wrapservice.js ./node_modules/azure/lib/services/serviceBus/wraptokenmanager.js ./node_modules/azure/lib/services/serviceManagement/models/roleparser.js ./node_modules/azure/lib/services/serviceManagement/models/roleschema.json ./node_modules/azure/lib/services/serviceManagement/models/servicemanagementserialize.js ./node_modules/azure/lib/services/serviceManagement/servicemanagementservice.js ./node_modules/azure/lib/services/table/batchserviceclient.js ./node_modules/azure/lib/services/table/models/entityresult.js ./node_modules/azure/lib/services/table/models/queryentitiesresultcontinuation.js ./node_modules/azure/lib/services/table/models/querytablesresultcontinuation.js ./node_modules/azure/lib/services/table/models/servicepropertiesresult.js ./node_modules/azure/lib/services/table/models/tableresult.js ./node_modules/azure/lib/services/table/sharedkeylitetable.js ./node_modules/azure/lib/services/table/sharedkeytable.js ./node_modules/azure/lib/services/table/tablequery.js ./node_modules/azure/lib/services/table/tableservice.js ./node_modules/azure/lib/util/atomhandler.js ./node_modules/azure/lib/util/certificates/der.js ./node_modules/azure/lib/util/certificates/pkcs.js ./node_modules/azure/lib/util/constants.js ./node_modules/azure/lib/util/iso8061date.js ./node_modules/azure/lib/util/js2xml.js ./node_modules/azure/lib/util/rfc1123date.js ./node_modules/azure/lib/util/util.js ./node_modules/azure/lib/util/validate.js ./node_modules/azure/LICENSE.txt ./node_modules/azure/node_modules/async/index.js ./node_modules/azure/node_modules/async/lib/async.js ./node_modules/azure/node_modules/async/LICENSE ./node_modules/azure/node_modules/async/package.json ./node_modules/azure/node_modules/azure/lib/azure.js ./node_modules/azure/node_modules/azure/lib/diagnostics/logger.js ./node_modules/azure/node_modules/azure/lib/http/webresource.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/fileinputchannel.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/goalstatedeserializer.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/namedpipeinputchannel.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/namedpipeoutputchannel.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/protocol1runtimeclient.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/protocol1runtimecurrentstateclient.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/protocol1runtimegoalstateclient.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/roleenvironment.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/runtimekernel.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/runtimeversionmanager.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/runtimeversionprotocolclient.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/xmlcurrentstateserializer.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/xmlgoalstatedeserializer.js ./node_modules/azure/node_modules/azure/lib/serviceruntime/xmlroleenvironmentdatadeserializer.js ./node_modules/azure/node_modules/azure/lib/services/blob/blobservice.js ./node_modules/azure/node_modules/azure/lib/services/blob/internal/sharedaccesssignature.js ./node_modules/azure/node_modules/azure/lib/services/blob/internal/sharedkey.js ./node_modules/azure/node_modules/azure/lib/services/blob/internal/sharedkeylite.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/blobresult.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/blocklistresult.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/containeraclresult.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/containerresult.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/leaseresult.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/listblobsresultcontinuation.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/listcontainersresultcontinuation.js ./node_modules/azure/node_modules/azure/lib/services/blob/models/servicepropertiesresult.js ./node_modules/azure/node_modules/azure/lib/services/core/connectionstringparser.js ./node_modules/azure/node_modules/azure/lib/services/core/exponentialretrypolicyfilter.js ./node_modules/azure/node_modules/azure/lib/services/core/hmacsha256sign.js ./node_modules/azure/node_modules/azure/lib/services/core/linearretrypolicyfilter.js ./node_modules/azure/node_modules/azure/lib/services/core/servicebusserviceclient.js ./node_modules/azure/node_modules/azure/lib/services/core/servicebussettings.js ./node_modules/azure/node_modules/azure/lib/services/core/serviceclient.js ./node_modules/azure/node_modules/azure/lib/services/core/servicemanagementclient.js ./node_modules/azure/node_modules/azure/lib/services/core/servicemanagementsettings.js ./node_modules/azure/node_modules/azure/lib/services/core/servicesettings.js ./node_modules/azure/node_modules/azure/lib/services/core/sqlserviceclient.js ./node_modules/azure/node_modules/azure/lib/services/core/storageserviceclient.js ./node_modules/azure/node_modules/azure/lib/services/core/storageservicesettings.js ./node_modules/azure/node_modules/azure/lib/services/queue/models/listqueuesresultcontinuation.js ./node_modules/azure/node_modules/azure/lib/services/queue/models/queuemessageresult.js ./node_modules/azure/node_modules/azure/lib/services/queue/models/queueresult.js ./node_modules/azure/node_modules/azure/lib/services/queue/models/servicepropertiesresult.js ./node_modules/azure/node_modules/azure/lib/services/queue/queueservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/apnsservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/gcmservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/internal/sharedaccesssignature.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/internal/wrap.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/internal/wraptokenmanager.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/acstokenresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/notificationhubresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/queuemessageresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/queueresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/registrationresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/resourceresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/ruleresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/subscriptionresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/models/topicresult.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/notificationhubservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/servicebusservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/servicebusservicebase.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/wnsservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceBus/wrapservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/hdinsightservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/models/roleparser.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/models/roleschema.json ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/models/servicemanagementserialize.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/servicebusmanagementservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/servicemanagementservice.js ./node_modules/azure/node_modules/azure/lib/services/serviceManagement/sqlmanagementservice.js ./node_modules/azure/node_modules/azure/lib/services/sqlAzure/models/databaseresult.js ./node_modules/azure/node_modules/azure/lib/services/sqlAzure/sqlserveracs.js ./node_modules/azure/node_modules/azure/lib/services/sqlAzure/sqlservice.js ./node_modules/azure/node_modules/azure/lib/services/table/batchserviceclient.js ./node_modules/azure/node_modules/azure/lib/services/table/internal/sharedkeylitetable.js ./node_modules/azure/node_modules/azure/lib/services/table/internal/sharedkeytable.js ./node_modules/azure/node_modules/azure/lib/services/table/models/entityresult.js ./node_modules/azure/node_modules/azure/lib/services/table/models/listresult.js ./node_modules/azure/node_modules/azure/lib/services/table/models/queryentitiesresultcontinuation.js ./node_modules/azure/node_modules/azure/lib/services/table/models/querytablesresultcontinuation.js ./node_modules/azure/node_modules/azure/lib/services/table/models/servicepropertiesresult.js ./node_modules/azure/node_modules/azure/lib/services/table/models/tableresult.js ./node_modules/azure/node_modules/azure/lib/services/table/tablequery.js ./node_modules/azure/node_modules/azure/lib/services/table/tableservice.js ./node_modules/azure/node_modules/azure/lib/util/atomhandler.js ./node_modules/azure/node_modules/azure/lib/util/constants.js ./node_modules/azure/node_modules/azure/lib/util/date.js ./node_modules/azure/node_modules/azure/lib/util/edmtype.js ./node_modules/azure/node_modules/azure/lib/util/iso8061date.js ./node_modules/azure/node_modules/azure/lib/util/js2xml.js ./node_modules/azure/node_modules/azure/lib/util/odatahandler.js ./node_modules/azure/node_modules/azure/lib/util/rfc1123date.js ./node_modules/azure/node_modules/azure/lib/util/util.js ./node_modules/azure/node_modules/azure/lib/util/validate.js ./node_modules/azure/node_modules/azure/LICENSE.txt ./node_modules/azure/node_modules/azure/node_modules/wns/lib/wns.js ./node_modules/azure/node_modules/azure/node_modules/wns/LICENSE.txt ./node_modules/azure/node_modules/azure/node_modules/wns/package.json ./node_modules/azure/node_modules/azure/node_modules/xml2js/lib/xml2js.js ./node_modules/azure/node_modules/azure/node_modules/xml2js/LICENSE ./node_modules/azure/node_modules/azure/node_modules/xml2js/node_modules/sax/lib/sax.js ./node_modules/azure/node_modules/azure/node_modules/xml2js/node_modules/sax/LICENSE ./node_modules/azure/node_modules/azure/node_modules/xml2js/node_modules/sax/package.json ./node_modules/azure/node_modules/azure/node_modules/xml2js/package.json ./node_modules/azure/node_modules/azure/package.json ./node_modules/azure/node_modules/colors/colors.js ./node_modules/azure/node_modules/colors/MIT-LICENSE.txt ./node_modules/azure/node_modules/colors/package.json ./node_modules/azure/node_modules/commander/index.js ./node_modules/azure/node_modules/commander/lib/commander.js ./node_modules/azure/node_modules/commander/node_modules/keypress/index.js ./node_modules/azure/node_modules/commander/node_modules/keypress/package.json ./node_modules/azure/node_modules/commander/package.json ./node_modules/azure/node_modules/dateformat/lib/dateformat.js ./node_modules/azure/node_modules/dateformat/package.json ./node_modules/azure/node_modules/easy-table/lib/table.js ./node_modules/azure/node_modules/easy-table/package.json ./node_modules/azure/node_modules/eyes/lib/eyes.js ./node_modules/azure/node_modules/eyes/LICENSE ./node_modules/azure/node_modules/eyes/package.json ./node_modules/azure/node_modules/log/index.js ./node_modules/azure/node_modules/log/lib/log.js ./node_modules/azure/node_modules/log/package.json ./node_modules/azure/node_modules/mime/LICENSE ./node_modules/azure/node_modules/mime/mime.js ./node_modules/azure/node_modules/mime/package.json ./node_modules/azure/node_modules/mime/types/mime.types ./node_modules/azure/node_modules/mime/types/node.types ./node_modules/azure/node_modules/node-uuid/LICENSE.md ./node_modules/azure/node_modules/node-uuid/package.json ./node_modules/azure/node_modules/node-uuid/uuid.js ./node_modules/azure/node_modules/qs/component.json ./node_modules/azure/node_modules/qs/index.js ./node_modules/azure/node_modules/qs/lib/head.js ./node_modules/azure/node_modules/qs/lib/querystring.js ./node_modules/azure/node_modules/qs/lib/tail.js ./node_modules/azure/node_modules/qs/package.json ./node_modules/azure/node_modules/qs/querystring.js ./node_modules/azure/node_modules/request/aws.js ./node_modules/azure/node_modules/request/forever.js ./node_modules/azure/node_modules/request/LICENSE ./node_modules/azure/node_modules/request/main.js ./node_modules/azure/node_modules/request/node_modules/form-data/lib/form_data.js ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/async/index.js ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/async/lib/async.js ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/async/LICENSE ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/async/package.json ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/lib/combined_stream.js ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/License ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/node_modules/delayed-stream/lib/delayed_stream.js ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/node_modules/delayed-stream/License ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/node_modules/delayed-stream/package.json ./node_modules/azure/node_modules/request/node_modules/form-data/node_modules/combined-stream/package.json ./node_modules/azure/node_modules/request/node_modules/form-data/package.json ./node_modules/azure/node_modules/request/node_modules/mime/LICENSE ./node_modules/azure/node_modules/request/node_modules/mime/mime.js ./node_modules/azure/node_modules/request/node_modules/mime/package.json ./node_modules/azure/node_modules/request/node_modules/mime/types/mime.types ./node_modules/azure/node_modules/request/node_modules/mime/types/node.types ./node_modules/azure/node_modules/request/oauth.js ./node_modules/azure/node_modules/request/package.json ./node_modules/azure/node_modules/request/tunnel.js ./node_modules/azure/node_modules/request/uuid.js ./node_modules/azure/node_modules/request/vendor/cookie/index.js ./node_modules/azure/node_modules/request/vendor/cookie/jar.js ./node_modules/azure/node_modules/sax/lib/sax.js ./node_modules/azure/node_modules/sax/LICENSE ./node_modules/azure/node_modules/sax/package.json ./node_modules/azure/node_modules/streamline/AUTHORS ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/decompiler.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/definitions.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jsbrowser.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jsdecomp.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jsdefs.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jsexec.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jslex.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/jsparse.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/lexer.js ./node_modules/azure/node_modules/streamline/deps/narcissus/lib/parser.js ./node_modules/azure/node_modules/streamline/deps/narcissus/LICENSE ./node_modules/azure/node_modules/streamline/deps/narcissus/main.js ./node_modules/azure/node_modules/streamline/deps/narcissus/package.json ./node_modules/azure/node_modules/streamline/deps/narcissus/xfail/narcissus-failures.txt ./node_modules/azure/node_modules/streamline/deps/narcissus/xfail/narcissus-slow.txt ./node_modules/azure/node_modules/streamline/lib/callbacks/format.js ./node_modules/azure/node_modules/streamline/lib/callbacks/require-stub.js ./node_modules/azure/node_modules/streamline/lib/callbacks/runtime.js ./node_modules/azure/node_modules/streamline/lib/callbacks/transform.js ./node_modules/azure/node_modules/streamline/lib/compile.js ./node_modules/azure/node_modules/streamline/lib/compiler/command.js ./node_modules/azure/node_modules/streamline/lib/compiler/compile--fibers.js ./node_modules/azure/node_modules/streamline/lib/compiler/compile.js ./node_modules/azure/node_modules/streamline/lib/compiler/compile_.js ./node_modules/azure/node_modules/streamline/lib/compiler/index.js ./node_modules/azure/node_modules/streamline/lib/compiler/register.js ./node_modules/azure/node_modules/streamline/lib/fibers/runtime.js ./node_modules/azure/node_modules/streamline/lib/fibers/transform.js ./node_modules/azure/node_modules/streamline/lib/fibers/walker.js ./node_modules/azure/node_modules/streamline/lib/globals.js ./node_modules/azure/node_modules/streamline/lib/index.js ./node_modules/azure/node_modules/streamline/lib/register.js ./node_modules/azure/node_modules/streamline/lib/require/client/require.js ./node_modules/azure/node_modules/streamline/lib/require/server/depend.js ./node_modules/azure/node_modules/streamline/lib/require/server/require.js ./node_modules/azure/node_modules/streamline/lib/streams/client/streams--fibers.js ./node_modules/azure/node_modules/streamline/lib/streams/client/streams.js ./node_modules/azure/node_modules/streamline/lib/streams/client/streams_.js ./node_modules/azure/node_modules/streamline/lib/streams/jsonRequest.js ./node_modules/azure/node_modules/streamline/lib/streams/readers.js ./node_modules/azure/node_modules/streamline/lib/streams/server/httpHelper.js ./node_modules/azure/node_modules/streamline/lib/streams/server/streams.js ./node_modules/azure/node_modules/streamline/lib/streams/streams.js ./node_modules/azure/node_modules/streamline/lib/tools/docTool.js ./node_modules/azure/node_modules/streamline/lib/transform.js ./node_modules/azure/node_modules/streamline/lib/util/flows--fibers.js ./node_modules/azure/node_modules/streamline/lib/util/flows.js ./node_modules/azure/node_modules/streamline/lib/util/flows_.js ./node_modules/azure/node_modules/streamline/lib/util/future.js ./node_modules/azure/node_modules/streamline/lib/util/index.js ./node_modules/azure/node_modules/streamline/lib/util/url.js ./node_modules/azure/node_modules/streamline/lib/util/uuid.js ./node_modules/azure/node_modules/streamline/module.js ./node_modules/azure/node_modules/streamline/package.json ./node_modules/azure/node_modules/tunnel/index.js ./node_modules/azure/node_modules/tunnel/lib/tunnel.js ./node_modules/azure/node_modules/tunnel/package.json ./node_modules/azure/node_modules/underscore/index.js ./node_modules/azure/node_modules/underscore/LICENSE ./node_modules/azure/node_modules/underscore/package.json ./node_modules/azure/node_modules/underscore/underscore.js ./node_modules/azure/node_modules/underscore.string/lib/underscore.string.js ./node_modules/azure/node_modules/underscore.string/package.json ./node_modules/azure/node_modules/validator/index.js ./node_modules/azure/node_modules/validator/lib/defaultError.js ./node_modules/azure/node_modules/validator/lib/entities.js ./node_modules/azure/node_modules/validator/lib/filter.js ./node_modules/azure/node_modules/validator/lib/index.js ./node_modules/azure/node_modules/validator/lib/validator.js ./node_modules/azure/node_modules/validator/lib/validators.js ./node_modules/azure/node_modules/validator/lib/xss.js ./node_modules/azure/node_modules/validator/LICENSE ./node_modules/azure/node_modules/validator/package.json ./node_modules/azure/node_modules/validator/validator.js ./node_modules/azure/node_modules/winston/lib/winston/common.js ./node_modules/azure/node_modules/winston/lib/winston/config/cli-config.js ./node_modules/azure/node_modules/winston/lib/winston/config/npm-config.js ./node_modules/azure/node_modules/winston/lib/winston/config/syslog-config.js ./node_modules/azure/node_modules/winston/lib/winston/config.js ./node_modules/azure/node_modules/winston/lib/winston/container.js ./node_modules/azure/node_modules/winston/lib/winston/exception.js ./node_modules/azure/node_modules/winston/lib/winston/logger.js ./node_modules/azure/node_modules/winston/lib/winston/transports/console.js ./node_modules/azure/node_modules/winston/lib/winston/transports/file.js ./node_modules/azure/node_modules/winston/lib/winston/transports/http.js ./node_modules/azure/node_modules/winston/lib/winston/transports/transport.js ./node_modules/azure/node_modules/winston/lib/winston/transports/webhook.js ./node_modules/azure/node_modules/winston/lib/winston/transports.js ./node_modules/azure/node_modules/winston/lib/winston.js ./node_modules/azure/node_modules/winston/LICENSE ./node_modules/azure/node_modules/winston/node_modules/cycle/cycle.js ./node_modules/azure/node_modules/winston/node_modules/cycle/package.json ./node_modules/azure/node_modules/winston/node_modules/pkginfo/lib/pkginfo.js ./node_modules/azure/node_modules/winston/node_modules/pkginfo/package.json ./node_modules/azure/node_modules/winston/node_modules/request/aws.js ./node_modules/azure/node_modules/winston/node_modules/request/aws2.js ./node_modules/azure/node_modules/winston/node_modules/request/forever.js ./node_modules/azure/node_modules/winston/node_modules/request/LICENSE ./node_modules/azure/node_modules/winston/node_modules/request/main.js ./node_modules/azure/node_modules/winston/node_modules/request/mimetypes.js ./node_modules/azure/node_modules/winston/node_modules/request/oauth.js ./node_modules/azure/node_modules/winston/node_modules/request/package.json ./node_modules/azure/node_modules/winston/node_modules/request/tunnel.js ./node_modules/azure/node_modules/winston/node_modules/request/uuid.js ./node_modules/azure/node_modules/winston/node_modules/request/vendor/cookie/index.js ./node_modules/azure/node_modules/winston/node_modules/request/vendor/cookie/jar.js ./node_modules/azure/node_modules/winston/node_modules/stack-trace/lib/stack-trace.js ./node_modules/azure/node_modules/winston/node_modules/stack-trace/License ./node_modules/azure/node_modules/winston/node_modules/stack-trace/package.json ./node_modules/azure/node_modules/winston/package.json ./node_modules/azure/node_modules/xml2js/lib/xml2js.js ./node_modules/azure/node_modules/xml2js/LICENSE ./node_modules/azure/node_modules/xml2js/package.json ./node_modules/azure/node_modules/xmlbuilder/lib/index.js ./node_modules/azure/node_modules/xmlbuilder/lib/XMLBuilder.js ./node_modules/azure/node_modules/xmlbuilder/lib/XMLFragment.js ./node_modules/azure/node_modules/xmlbuilder/package.json ./node_modules/azure/package.json ./node_modules/dpush/lib/dpush.js ./node_modules/dpush/LICENSE.txt ./node_modules/dpush/package.json ./node_modules/express/.npmignore ./node_modules/express/.travis.yml ./node_modules/express/bin/express ./node_modules/express/History.md ./node_modules/express/index.js ./node_modules/express/lib/application.js ./node_modules/express/lib/express.js ./node_modules/express/lib/middleware.js ./node_modules/express/lib/request.js ./node_modules/express/lib/response.js ./node_modules/express/lib/router/index.js ./node_modules/express/lib/router/route.js ./node_modules/express/lib/utils.js ./node_modules/express/lib/view.js ./node_modules/express/LICENSE ./node_modules/express/Makefile ./node_modules/express/node_modules/buffer-crc32/.npmignore ./node_modules/express/node_modules/buffer-crc32/.travis.yml ./node_modules/express/node_modules/buffer-crc32/index.js ./node_modules/express/node_modules/buffer-crc32/package.json ./node_modules/express/node_modules/buffer-crc32/README.md ./node_modules/express/node_modules/buffer-crc32/tests/crc.test.js ./node_modules/express/node_modules/commander/.npmignore ./node_modules/express/node_modules/commander/.travis.yml ./node_modules/express/node_modules/commander/History.md ./node_modules/express/node_modules/commander/index.js ./node_modules/express/node_modules/commander/lib/commander.js ./node_modules/express/node_modules/commander/Makefile ./node_modules/express/node_modules/commander/package.json ./node_modules/express/node_modules/commander/Readme.md ./node_modules/express/node_modules/connect/.npmignore ./node_modules/express/node_modules/connect/.travis.yml ./node_modules/express/node_modules/connect/index.js ./node_modules/express/node_modules/connect/lib/cache.js ./node_modules/express/node_modules/connect/lib/connect.js ./node_modules/express/node_modules/connect/lib/index.js ./node_modules/express/node_modules/connect/lib/middleware/basicAuth.js ./node_modules/express/node_modules/connect/lib/middleware/bodyParser.js ./node_modules/express/node_modules/connect/lib/middleware/compress.js ./node_modules/express/node_modules/connect/lib/middleware/cookieParser.js ./node_modules/express/node_modules/connect/lib/middleware/cookieSession.js ./node_modules/express/node_modules/connect/lib/middleware/csrf.js ./node_modules/express/node_modules/connect/lib/middleware/directory.js ./node_modules/express/node_modules/connect/lib/middleware/errorHandler.js ./node_modules/express/node_modules/connect/lib/middleware/favicon.js ./node_modules/express/node_modules/connect/lib/middleware/json.js ./node_modules/express/node_modules/connect/lib/middleware/limit.js ./node_modules/express/node_modules/connect/lib/middleware/logger.js ./node_modules/express/node_modules/connect/lib/middleware/methodOverride.js ./node_modules/express/node_modules/connect/lib/middleware/multipart.js ./node_modules/express/node_modules/connect/lib/middleware/query.js ./node_modules/express/node_modules/connect/lib/middleware/responseTime.js ./node_modules/express/node_modules/connect/lib/middleware/session/cookie.js ./node_modules/express/node_modules/connect/lib/middleware/session/memory.js ./node_modules/express/node_modules/connect/lib/middleware/session/session.js ./node_modules/express/node_modules/connect/lib/middleware/session/store.js ./node_modules/express/node_modules/connect/lib/middleware/session.js ./node_modules/express/node_modules/connect/lib/middleware/static.js ./node_modules/express/node_modules/connect/lib/middleware/staticCache.js ./node_modules/express/node_modules/connect/lib/middleware/timeout.js ./node_modules/express/node_modules/connect/lib/middleware/urlencoded.js ./node_modules/express/node_modules/connect/lib/middleware/vhost.js ./node_modules/express/node_modules/connect/lib/patch.js ./node_modules/express/node_modules/connect/lib/proto.js ./node_modules/express/node_modules/connect/lib/public/directory.html ./node_modules/express/node_modules/connect/lib/public/error.html ./node_modules/express/node_modules/connect/lib/public/favicon.ico ./node_modules/express/node_modules/connect/lib/public/icons/page.png ./node_modules/express/node_modules/connect/lib/public/icons/page_add.png ./node_modules/express/node_modules/connect/lib/public/icons/page_attach.png ./node_modules/express/node_modules/connect/lib/public/icons/page_code.png ./node_modules/express/node_modules/connect/lib/public/icons/page_copy.png ./node_modules/express/node_modules/connect/lib/public/icons/page_delete.png ./node_modules/express/node_modules/connect/lib/public/icons/page_edit.png ./node_modules/express/node_modules/connect/lib/public/icons/page_error.png ./node_modules/express/node_modules/connect/lib/public/icons/page_excel.png ./node_modules/express/node_modules/connect/lib/public/icons/page_find.png ./node_modules/express/node_modules/connect/lib/public/icons/page_gear.png ./node_modules/express/node_modules/connect/lib/public/icons/page_go.png ./node_modules/express/node_modules/connect/lib/public/icons/page_green.png ./node_modules/express/node_modules/connect/lib/public/icons/page_key.png ./node_modules/express/node_modules/connect/lib/public/icons/page_lightning.png ./node_modules/express/node_modules/connect/lib/public/icons/page_link.png ./node_modules/express/node_modules/connect/lib/public/icons/page_paintbrush.png ./node_modules/express/node_modules/connect/lib/public/icons/page_paste.png ./node_modules/express/node_modules/connect/lib/public/icons/page_red.png ./node_modules/express/node_modules/connect/lib/public/icons/page_refresh.png ./node_modules/express/node_modules/connect/lib/public/icons/page_save.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_acrobat.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_actionscript.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_add.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_c.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_camera.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_cd.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_code.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_code_red.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_coldfusion.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_compressed.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_copy.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_cplusplus.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_csharp.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_cup.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_database.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_delete.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_dvd.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_edit.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_error.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_excel.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_find.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_flash.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_freehand.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_gear.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_get.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_go.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_h.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_horizontal.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_key.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_lightning.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_link.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_magnify.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_medal.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_office.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_paint.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_paintbrush.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_paste.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_php.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_picture.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_powerpoint.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_put.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_ruby.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_stack.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_star.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_swoosh.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_text.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_text_width.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_tux.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_vector.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_visualstudio.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_width.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_word.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_world.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_wrench.png ./node_modules/express/node_modules/connect/lib/public/icons/page_white_zip.png ./node_modules/express/node_modules/connect/lib/public/icons/page_word.png ./node_modules/express/node_modules/connect/lib/public/icons/page_world.png ./node_modules/express/node_modules/connect/lib/public/style.css ./node_modules/express/node_modules/connect/lib/utils.js ./node_modules/express/node_modules/connect/LICENSE ./node_modules/express/node_modules/connect/node_modules/bytes/.npmignore ./node_modules/express/node_modules/connect/node_modules/bytes/component.json ./node_modules/express/node_modules/connect/node_modules/bytes/History.md ./node_modules/express/node_modules/connect/node_modules/bytes/index.js ./node_modules/express/node_modules/connect/node_modules/bytes/Makefile ./node_modules/express/node_modules/connect/node_modules/bytes/package.json ./node_modules/express/node_modules/connect/node_modules/bytes/Readme.md ./node_modules/express/node_modules/connect/node_modules/formidable/.npmignore ./node_modules/express/node_modules/connect/node_modules/formidable/.travis.yml ./node_modules/express/node_modules/connect/node_modules/formidable/benchmark/bench-multipart-parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/example/json.js ./node_modules/express/node_modules/connect/node_modules/formidable/example/post.js ./node_modules/express/node_modules/connect/node_modules/formidable/example/upload.js ./node_modules/express/node_modules/connect/node_modules/formidable/index.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/file.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/incoming_form.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/index.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/json_parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/multipart_parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/octet_parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/lib/querystring_parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/LICENSE ./node_modules/express/node_modules/connect/node_modules/formidable/package.json ./node_modules/express/node_modules/connect/node_modules/formidable/Readme.md ./node_modules/express/node_modules/connect/node_modules/formidable/test/common.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/beta-sticker-1.png ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/binaryfile.tar.gz ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/blank.gif ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/funkyfilename.txt ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/menu_separator.png ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/file/plain.txt ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/http/special-chars-in-filename/info.md ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/encoding.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/misc.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/no-filename.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/preamble.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/special-chars-in-filename.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/js/workarounds.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/fixture/multipart.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/integration/test-fixtures.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/integration/test-json.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/integration/test-octet-stream.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/common.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/integration/test-multipart-parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/simple/test-file.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/simple/test-incoming-form.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/simple/test-multipart-parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/simple/test-querystring-parser.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/legacy/system/test-multi-video-upload.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/run.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/standalone/test-connection-aborted.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/standalone/test-content-transfer-encoding.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/standalone/test-issue-46.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/tools/base64.html ./node_modules/express/node_modules/connect/node_modules/formidable/test/unit/test-file.js ./node_modules/express/node_modules/connect/node_modules/formidable/test/unit/test-incoming-form.js ./node_modules/express/node_modules/connect/node_modules/formidable/tool/record.js ./node_modules/express/node_modules/connect/node_modules/pause/.npmignore ./node_modules/express/node_modules/connect/node_modules/pause/History.md ./node_modules/express/node_modules/connect/node_modules/pause/index.js ./node_modules/express/node_modules/connect/node_modules/pause/Makefile ./node_modules/express/node_modules/connect/node_modules/pause/package.json ./node_modules/express/node_modules/connect/node_modules/pause/Readme.md ./node_modules/express/node_modules/connect/node_modules/qs/.gitmodules ./node_modules/express/node_modules/connect/node_modules/qs/.npmignore ./node_modules/express/node_modules/connect/node_modules/qs/index.js ./node_modules/express/node_modules/connect/node_modules/qs/package.json ./node_modules/express/node_modules/connect/node_modules/qs/Readme.md ./node_modules/express/node_modules/connect/package.json ./node_modules/express/node_modules/connect/test.js ./node_modules/express/node_modules/cookie/.npmignore ./node_modules/express/node_modules/cookie/.travis.yml ./node_modules/express/node_modules/cookie/index.js ./node_modules/express/node_modules/cookie/package.json ./node_modules/express/node_modules/cookie/README.md ./node_modules/express/node_modules/cookie/test/mocha.opts ./node_modules/express/node_modules/cookie/test/parse.js ./node_modules/express/node_modules/cookie/test/serialize.js ./node_modules/express/node_modules/cookie-signature/.npmignore ./node_modules/express/node_modules/cookie-signature/History.md ./node_modules/express/node_modules/cookie-signature/index.js ./node_modules/express/node_modules/cookie-signature/Makefile ./node_modules/express/node_modules/cookie-signature/package.json ./node_modules/express/node_modules/cookie-signature/Readme.md ./node_modules/express/node_modules/debug/.npmignore ./node_modules/express/node_modules/debug/component.json ./node_modules/express/node_modules/debug/debug.js ./node_modules/express/node_modules/debug/example/app.js ./node_modules/express/node_modules/debug/example/browser.html ./node_modules/express/node_modules/debug/example/wildcards.js ./node_modules/express/node_modules/debug/example/worker.js ./node_modules/express/node_modules/debug/History.md ./node_modules/express/node_modules/debug/index.js ./node_modules/express/node_modules/debug/lib/debug.js ./node_modules/express/node_modules/debug/package.json ./node_modules/express/node_modules/debug/Readme.md ./node_modules/express/node_modules/fresh/.npmignore ./node_modules/express/node_modules/fresh/index.js ./node_modules/express/node_modules/fresh/Makefile ./node_modules/express/node_modules/fresh/package.json ./node_modules/express/node_modules/fresh/Readme.md ./node_modules/express/node_modules/methods/index.js ./node_modules/express/node_modules/methods/package.json ./node_modules/express/node_modules/mkdirp/.npmignore ./node_modules/express/node_modules/mkdirp/.travis.yml ./node_modules/express/node_modules/mkdirp/examples/pow.js ./node_modules/express/node_modules/mkdirp/index.js ./node_modules/express/node_modules/mkdirp/LICENSE ./node_modules/express/node_modules/mkdirp/package.json ./node_modules/express/node_modules/mkdirp/README.markdown ./node_modules/express/node_modules/mkdirp/test/chmod.js ./node_modules/express/node_modules/mkdirp/test/clobber.js ./node_modules/express/node_modules/mkdirp/test/mkdirp.js ./node_modules/express/node_modules/mkdirp/test/perm.js ./node_modules/express/node_modules/mkdirp/test/perm_sync.js ./node_modules/express/node_modules/mkdirp/test/race.js ./node_modules/express/node_modules/mkdirp/test/rel.js ./node_modules/express/node_modules/mkdirp/test/return.js ./node_modules/express/node_modules/mkdirp/test/return_sync.js ./node_modules/express/node_modules/mkdirp/test/root.js ./node_modules/express/node_modules/mkdirp/test/sync.js ./node_modules/express/node_modules/mkdirp/test/umask.js ./node_modules/express/node_modules/mkdirp/test/umask_sync.js ./node_modules/express/node_modules/range-parser/.npmignore ./node_modules/express/node_modules/range-parser/History.md ./node_modules/express/node_modules/range-parser/index.js ./node_modules/express/node_modules/range-parser/Makefile ./node_modules/express/node_modules/range-parser/package.json ./node_modules/express/node_modules/range-parser/Readme.md ./node_modules/express/node_modules/send/.npmignore ./node_modules/express/node_modules/send/History.md ./node_modules/express/node_modules/send/index.js ./node_modules/express/node_modules/send/lib/send.js ./node_modules/express/node_modules/send/lib/utils.js ./node_modules/express/node_modules/send/Makefile ./node_modules/express/node_modules/send/node_modules/mime/LICENSE ./node_modules/express/node_modules/send/node_modules/mime/mime.js ./node_modules/express/node_modules/send/node_modules/mime/package.json ./node_modules/express/node_modules/send/node_modules/mime/README.md ./node_modules/express/node_modules/send/node_modules/mime/test.js ./node_modules/express/node_modules/send/node_modules/mime/types/mime.types ./node_modules/express/node_modules/send/node_modules/mime/types/node.types ./node_modules/express/node_modules/send/package.json ./node_modules/express/node_modules/send/Readme.md ./node_modules/express/package.json ./node_modules/express/Readme.md ./node_modules/mpns/lib/mpns.js ./node_modules/mpns/package.json ./node_modules/oauth/index.js ./node_modules/oauth/lib/oauth.js ./node_modules/oauth/lib/oauth2.js ./node_modules/oauth/lib/sha1.js ./node_modules/oauth/lib/_utils.js ./node_modules/oauth/LICENSE ./node_modules/oauth/package.json ./node_modules/pusher/index.js ./node_modules/pusher/lib/pusher.js ./node_modules/pusher/node_modules/request/aws.js ./node_modules/pusher/node_modules/request/aws2.js ./node_modules/pusher/node_modules/request/forever.js ./node_modules/pusher/node_modules/request/LICENSE ./node_modules/pusher/node_modules/request/main.js ./node_modules/pusher/node_modules/request/mimetypes.js ./node_modules/pusher/node_modules/request/oauth.js ./node_modules/pusher/node_modules/request/package.json ./node_modules/pusher/node_modules/request/tunnel.js ./node_modules/pusher/node_modules/request/uuid.js ./node_modules/pusher/node_modules/request/vendor/cookie/index.js ./node_modules/pusher/node_modules/request/vendor/cookie/jar.js ./node_modules/pusher/package.json ./node_modules/request/forever.js ./node_modules/request/LICENSE ./node_modules/request/main.js ./node_modules/request/mimetypes.js ./node_modules/request/oauth.js ./node_modules/request/package.json ./node_modules/request/uuid.js ./node_modules/request/vendor/cookie/index.js ./node_modules/request/vendor/cookie/jar.js ./node_modules/sax/lib/sax.js ./node_modules/sax/LICENSE ./node_modules/sax/package.json ./node_modules/sendgrid/index.js ./node_modules/sendgrid/lib/email.js ./node_modules/sendgrid/lib/file_handler.js ./node_modules/sendgrid/lib/sendgrid.js ./node_modules/sendgrid/lib/smtpapi_headers.js ./node_modules/sendgrid/lib/validation.js ./node_modules/sendgrid/MIT.LICENSE ./node_modules/sendgrid/node_modules/mime/LICENSE ./node_modules/sendgrid/node_modules/mime/mime.js ./node_modules/sendgrid/node_modules/mime/package.json ./node_modules/sendgrid/node_modules/mime/types/mime.types ./node_modules/sendgrid/node_modules/mime/types/node.types ./node_modules/sendgrid/node_modules/nodemailer/lib/engines/sendmail.js ./node_modules/sendgrid/node_modules/nodemailer/lib/engines/ses.js ./node_modules/sendgrid/node_modules/nodemailer/lib/engines/smtp.js ./node_modules/sendgrid/node_modules/nodemailer/lib/engines/stub.js ./node_modules/sendgrid/node_modules/nodemailer/lib/helpers.js ./node_modules/sendgrid/node_modules/nodemailer/lib/nodemailer.js ./node_modules/sendgrid/node_modules/nodemailer/lib/transport.js ./node_modules/sendgrid/node_modules/nodemailer/lib/wellknown.js ./node_modules/sendgrid/node_modules/nodemailer/lib/xoauth.js ./node_modules/sendgrid/node_modules/nodemailer/LICENSE ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/lib/dkim.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/lib/mailcomposer.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/lib/punycode.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/lib/urlfetch.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/LICENSE ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/node_modules/mimelib-noiconv/content-types.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/node_modules/mimelib-noiconv/index.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/node_modules/mimelib-noiconv/LICENSE ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/node_modules/mimelib-noiconv/mime-functions.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/node_modules/mimelib-noiconv/package.json ./node_modules/sendgrid/node_modules/nodemailer/node_modules/mailcomposer/package.json ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/index.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/lib/client.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/lib/pool.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/lib/server.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/lib/starttls.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/LICENSE ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/cert/cert.pem ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/cert/key.pem ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/lib/mockup.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/lib/rai.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/lib/starttls.js ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/LICENSE ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/node_modules/rai/package.json ./node_modules/sendgrid/node_modules/nodemailer/node_modules/simplesmtp/package.json ./node_modules/sendgrid/node_modules/nodemailer/package.json ./node_modules/sendgrid/node_modules/step/lib/step.js ./node_modules/sendgrid/node_modules/step/package.json ./node_modules/sendgrid/node_modules/underscore/index.js ./node_modules/sendgrid/node_modules/underscore/LICENSE ./node_modules/sendgrid/node_modules/underscore/package.json ./node_modules/sendgrid/node_modules/underscore/underscore.js ./node_modules/sendgrid/package.json ./node_modules/sqlserver/lib/sql.js ./node_modules/sqlserver/lib/sqlserver.native.js ./node_modules/sqlserver/lib/sqlserver.node ./node_modules/sqlserver/package.json ./node_modules/tripwire/lib/native/windows/x86/tripwire.node ./node_modules/tripwire/lib/tripwire.js ./node_modules/tripwire/LICENSE.txt ./node_modules/tripwire/package.json ./node_modules/underscore/LICENSE ./node_modules/underscore/package.json ./node_modules/underscore/underscore.js ./node_modules/underscore.string/lib/underscore.string.js ./node_modules/underscore.string/package.json ./node_modules/wns/lib/wns.js ./node_modules/wns/LICENSE.txt ./node_modules/wns/package.json ./node_modules/xml2js/lib/xml2js.js ./node_modules/xml2js/LICENSE ./node_modules/xml2js/node_modules/sax/lib/sax.js ./node_modules/xml2js/node_modules/sax/LICENSE ./node_modules/xml2js/node_modules/sax/package.json ./node_modules/xml2js/package.json ./node_modules/xmlbuilder/lib/index.js ./node_modules/xmlbuilder/lib/XMLBuilder.js ./node_modules/xmlbuilder/lib/XMLFragment.js ./node_modules/xmlbuilder/package.json ./runtime/core.js ./runtime/filehelpers.js ./runtime/jsonwebtoken.js ./runtime/logger.js ./runtime/logwriter.js ./runtime/metrics.js ./runtime/query/expressions.js ./runtime/query/expressionvisitor.js ./runtime/query/queryparser.js ./runtime/request/authentication/facebook.js ./runtime/request/authentication/google.js ./runtime/request/authentication/microsoftaccount.js ./runtime/request/authentication/twitter.js ./runtime/request/dataoperation.js ./runtime/request/datapipeline.js ./runtime/request/html/corshelper.js ./runtime/request/html/crossdomainhandler.js ./runtime/request/html/templates/crossdomainbridge.html ./runtime/request/html/templates/loginviaiframe.html ./runtime/request/html/templates/loginviaiframereceiver.html ./runtime/request/html/templates/loginviapostmessage.html ./runtime/request/html/templating.js ./runtime/request/loginhandler.js ./runtime/request/middleware/allowHandler.js ./runtime/request/middleware/authenticate.js ./runtime/request/middleware/authorize.js ./runtime/request/middleware/bodyParser.js ./runtime/request/middleware/errorHandler.js ./runtime/request/middleware/requestLimit.js ./runtime/request/request.js ./runtime/request/requesthandler.js ./runtime/request/schedulerhandler.js ./runtime/request/statushandler.js ./runtime/request/tablehandler.js ./runtime/resources.js ./runtime/script/apibuilder.js ./runtime/script/metadata.js ./runtime/script/push/notify-apns.js ./runtime/script/push/notify-gcm.js ./runtime/script/push/notify-mpns.js ./runtime/script/push/notify-wns.js ./runtime/script/push/notify.js ./runtime/script/scriptcache.js ./runtime/script/scripterror.js ./runtime/script/scriptloader.js ./runtime/script/scriptmanager.js ./runtime/script/scriptstate.js ./runtime/script/sqladapter.js ./runtime/script/table.js ./runtime/server.js ./runtime/statuscodes.js ./runtime/storage/sqlbooleanizer.js ./runtime/storage/sqlformatter.js ./runtime/storage/sqlhelpers.js ./runtime/storage/storage.js ./runtime/Zumo.Node.js ./static/client/MobileServices.Web-1.0.0.js ./static/client/MobileServices.Web-1.0.0.min.js ./static/default.htm ./static/robots.txt ./Web.config

Read the article

Problem with Google Web Toolkit Maven Plugin

- by arreche

I got an error following the PetClinic GWT application in less then 30 minutes Any idea? C:\Users\user\Desktop\petclinic>mvn -e gwt:run + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Building petclinic [INFO] task-segment: [gwt:run] [INFO] ------------------------------------------------------------------------ [INFO] Preparing gwt:run [INFO] [aspectj:compile {execution: default}] [INFO] [resources:resources {execution: default-resources}] [WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 4 resources [INFO] [compiler:compile {execution: default-compile}] [INFO] Nothing to compile - all classes are up to date Downloading: http://repository.springsource.com/maven/bundles/release/org/codeha us/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom [INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6' in repository com.springsource.repository.bundles.release (http://repository.sp ringsource.com/maven/bundles/release) Downloading: http://repository.springsource.com/maven/bundles/external/org/codeh aus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom [INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6' in repository com.springsource.repository.bundles.external (http://repository.s pringsource.com/maven/bundles/external) Downloading: http://repository.springsource.com/maven/bundles/milestone/org/code haus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom [INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6' in repository com.springsource.repository.bundles.milestone (http://repository. springsource.com/maven/bundles/milestone) Downloading: http://maven.springframework.org/milestone/org/codehaus/plexus/plex us-components/1.1.6/plexus-components-1.1.6.pom [INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6' in repository spring-maven-milestone (http://maven.springframework.org/mileston e) Downloading: http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven/org /codehaus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom [INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6' in repository gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/g wt/maven) Downloading: http://repo1.maven.org/maven2/org/codehaus/plexus/plexus-components /1.1.6/plexus-components-1.1.6.pom [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error building POM (may not be this project's POM). Project ID: org.codehaus.plexus:plexus-components:pom:1.1.6 Reason: Cannot find parent: org.codehaus.plexus:plexus for project: org.codehaus .plexus:plexus-components:pom:1.1.6 for project org.codehaus.plexus:plexus-compo nents:pom:1.1.6 [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Unable to get dependency information: Unable to read the metadata file for artifact 'org.codehaus.plexus :plexus-compiler-api:jar': Cannot find parent: org.codehaus.plexus:plexus for pr oject: org.codehaus.plexus:plexus-components:pom:1.1.6 for project org.codehaus. plexus:plexus-components:pom:1.1.6 org.codehaus.plexus:plexus-compiler-api:jar:1.5.3 from the specified remote repositories: com.springsource.repository.bundles.release (http://repository.springsource.co m/maven/bundles/release), com.springsource.repository.bundles.milestone (http://repository.springsource. com/maven/bundles/milestone), spring-maven-snapshot (http://maven.springframework.org/snapshot), com.springsource.repository.bundles.external (http://repository.springsource.c om/maven/bundles/external), spring-maven-milestone (http://maven.springframework.org/milestone), central (http://repo1.maven.org/maven2), gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven), codehaus.org (http://snapshots.repository.codehaus.org), JBoss Repo (http://repository.jboss.com/maven2) Path to dependency: 1) org.codehaus.mojo:gwt-maven-plugin:maven-plugin:1.3.1.google at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:711) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandalone Goal(DefaultLifecycleExecutor.java:569) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau ltLifecycleExecutor.java:539) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan dleFailures(DefaultLifecycleExecutor.java:387) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen ts(DefaultLifecycleExecutor.java:348) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi fecycleExecutor.java:180) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138) at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:6 0) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.artifact.resolver.ArtifactResolutionException: Unabl e to get dependency information: Unable to read the metadata file for artifact ' org.codehaus.plexus:plexus-compiler-api:jar': Cannot find parent: org.codehaus.p lexus:plexus for project: org.codehaus.plexus:plexus-components:pom:1.1.6 for pr oject org.codehaus.plexus:plexus-components:pom:1.1.6 org.codehaus.plexus:plexus-compiler-api:jar:1.5.3 from the specified remote repositories: com.springsource.repository.bundles.release (http://repository.springsource.co m/maven/bundles/release), com.springsource.repository.bundles.milestone (http://repository.springsource. com/maven/bundles/milestone), spring-maven-snapshot (http://maven.springframework.org/snapshot), com.springsource.repository.bundles.external (http://repository.springsource.c om/maven/bundles/external), spring-maven-milestone (http://maven.springframework.org/milestone), central (http://repo1.maven.org/maven2), gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven), codehaus.org (http://snapshots.repository.codehaus.org), JBoss Repo (http://repository.jboss.com/maven2) Path to dependency: 1) org.codehaus.mojo:gwt-maven-plugin:maven-plugin:1.3.1.google at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D efaultArtifactCollector.java:430) at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(D efaultArtifactCollector.java:74) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:316) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:304) at org.apache.maven.plugin.DefaultPluginManager.ensurePluginContainerIsC omplete(DefaultPluginManager.java:835) at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(Defaul tPluginManager.java:647) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi nManager.java:468) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:694) ... 17 more Caused by: org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException : Unable to read the metadata file for artifact 'org.codehaus.plexus:plexus-comp iler-api:jar': Cannot find parent: org.codehaus.plexus:plexus for project: org.c odehaus.plexus:plexus-components:pom:1.1.6 for project org.codehaus.plexus:plexu s-components:pom:1.1.6 at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat edProject(MavenMetadataSource.java:200) at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat edArtifact(MavenMetadataSource.java:94) at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D efaultArtifactCollector.java:387) ... 24 more Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find parent : org.codehaus.plexus:plexus for project: org.codehaus.plexus:plexus-components: pom:1.1.6 for project org.codehaus.plexus:plexus-components:pom:1.1.6 at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D efaultMavenProjectBuilder.java:1396) at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D efaultMavenProjectBuilder.java:1407) at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D efaultMavenProjectBuilder.java:1407) at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(Def aultMavenProjectBuilder.java:823) at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromReposito ry(DefaultMavenProjectBuilder.java:255) at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat edProject(MavenMetadataSource.java:163) ... 26 more Caused by: org.apache.maven.project.InvalidProjectModelException: Parse error re ading POM. Reason: expected START_TAG or END_TAG not TEXT (position: TEXT seen . ..<role>Developer</role>\n 6878/?\r</... @163:16) for project org.codehaus .plexus:plexus at C:\Users\user\.m2\repository\org\codehaus\plexus\plexus\1.0.8\ plexus-1.0.8.pom at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default MavenProjectBuilder.java:1610) at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default MavenProjectBuilder.java:1571) at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepo sitory(DefaultMavenProjectBuilder.java:562) at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D efaultMavenProjectBuilder.java:1392) ... 31 more Caused by: org.codehaus.plexus.util.xml.pull.XmlPullParserException: expected ST ART_TAG or END_TAG not TEXT (position: TEXT seen ...<role>Developer</role>\n 6878/?\r</... @163:16) at hidden.org.codehaus.plexus.util.xml.pull.MXParser.nextTag(MXParser.ja va:1095) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseDeveloper(MavenXp p3Reader.java:1389) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseModel(MavenXpp3Re ader.java:1944) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.read(MavenXpp3Reader.j ava:3912) at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default MavenProjectBuilder.java:1606) ... 34 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 11 seconds [INFO] Finished at: Fri May 21 20:28:23 BST 2010 [INFO] Final Memory: 45M/205M [INFO] ------------------------------------------------------------------------

Read the article

Service Discovery in WCF 4.0 – Part 1

- by Shaun

When designing a service oriented architecture (SOA) system, there will be a lot of services with many service contracts, endpoints and behaviors. Besides the client calling the service, in a large distributed system a service may invoke other services. In this case, one service might need to know the endpoints it invokes. This might not be a problem in a small system. But when you have more than 10 services this might be a problem. For example in my current product, there are around 10 services, such as the user authentication service, UI integration service, location service, license service, device monitor service, event monitor service, schedule job service, accounting service, player management service, etc.. Benefit of Discovery Service Since almost all my services need to invoke at least one other service. This would be a difficult task to make sure all services endpoints are configured correctly in every service. And furthermore, it would be a nightmare when a service changed its endpoint at runtime. Hence, we need a discovery service to remove the dependency (configuration dependency). A discovery service plays as a service dictionary which stores the relationship between the contracts and the endpoints for every service. By using the discovery service, when service X wants to invoke service Y, it just need to ask the discovery service where is service Y, then the discovery service will return all proper endpoints of service Y, then service X can use the endpoint to send the request to service Y. And when some services changed their endpoint address, all need to do is to update its records in the discovery service then all others will know its new endpoint. In WCF 4.0 Discovery it supports both managed proxy discovery mode and ad-hoc discovery mode. In ad-hoc mode there is no standalone discovery service. When a client wanted to invoke a service, it will broadcast an message (normally in UDP protocol) to the entire network with the service match criteria. All services which enabled the discovery behavior will receive this message and only those matched services will send their endpoint back to the client. The managed proxy discovery service works as I described above. In this post I will only cover the managed proxy mode, where there’s a discovery service. For more information about the ad-hoc mode please refer to the MSDN. Service Announcement and Probe The main functionality of discovery service should be return the proper endpoint addresses back to the service who is looking for. In most cases the consume service (as a client) will send the contract which it wanted to request to the discovery service. And then the discovery service will find the endpoint and respond. Sometimes the contract and endpoint are not enough. It also contains versioning, extensions attributes. This post I will only cover the case includes contract and endpoint. When a client (or sometimes a service who need to invoke another service) need to connect to a target service, it will firstly request the discovery service through the “Probe” method with the criteria. Basically the criteria contains the contract type name of the target service. Then the discovery service will search its endpoint repository by the criteria. The repository might be a database, a distributed cache or a flat XML file. If it matches, the discovery service will grab the endpoint information (it’s called discovery endpoint metadata in WCF) and send back. And this is called “Probe”. Finally the client received the discovery endpoint metadata and will use the endpoint to connect to the target service. Besides the probe, discovery service should take the responsible to know there is a new service available when it goes online, as well as stopped when it goes offline. This feature is named “Announcement”. When a service started and stopped, it will announce to the discovery service. So the basic functionality of a discovery service should includes: 1, An endpoint which receive the service online message, and add the service endpoint information in the discovery repository. 2, An endpoint which receive the service offline message, and remove the service endpoint information from the discovery repository. 3, An endpoint which receive the client probe message, and return the matches service endpoints, and return the discovery endpoint metadata. WCF 4.0 discovery service just covers all these features in it's infrastructure classes. Discovery Service in WCF 4.0 WCF 4.0 introduced a new assembly named System.ServiceModel.Discovery which has all necessary classes and interfaces to build a WS-Discovery compliant discovery service. It supports ad-hoc and managed proxy modes. For the case mentioned in this post, what we need to build is a standalone discovery service, which is the managed proxy discovery service mode. To build a managed discovery service in WCF 4.0 just create a new class inherits from the abstract class System.ServiceModel.Discovery.DiscoveryProxy. This class implemented and abstracted the procedures of service announcement and probe. And it exposes 8 abstract methods where we can implement our own endpoint register, unregister and find logic. These 8 methods are asynchronized, which means all invokes to the discovery service are asynchronously, for better service capability and performance. 1, OnBeginOnlineAnnouncement, OnEndOnlineAnnouncement: Invoked when a service sent the online announcement message. We need to add the endpoint information to the repository in this method. 2, OnBeginOfflineAnnouncement, OnEndOfflineAnnouncement: Invoked when a service sent the offline announcement message. We need to remove the endpoint information from the repository in this method. 3, OnBeginFind, OnEndFind: Invoked when a client sent the probe message that want to find the service endpoint information. We need to look for the proper endpoints by matching the client’s criteria through the repository in this method. 4, OnBeginResolve, OnEndResolve: Invoked then a client sent the resolve message. Different from the find method, when using resolve method the discovery service will return the exactly one service endpoint metadata to the client. In our example we will NOT implement this method. Let’s create our own discovery service, inherit the base System.ServiceModel.Discovery.DiscoveryProxy. We also need to specify the service behavior in this class. Since the build-in discovery service host class only support the singleton mode, we must set its instance context mode to single. 1: using System; 2: using System.Collections.Generic; 3: using System.Linq; 4: using System.Text; 5: using System.ServiceModel.Discovery; 6: using System.ServiceModel; 7: 8: namespace Phare.Service 9: { 10: [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)] 11: public class ManagedProxyDiscoveryService : DiscoveryProxy 12: { 13: protected override IAsyncResult OnBeginFind(FindRequestContext findRequestContext, AsyncCallback callback, object state) 14: { 15: throw new NotImplementedException(); 16: } 17: 18: protected override IAsyncResult OnBeginOfflineAnnouncement(DiscoveryMessageSequence messageSequence, EndpointDiscoveryMetadata endpointDiscoveryMetadata, AsyncCallback callback, object state) 19: { 20: throw new NotImplementedException(); 21: } 22: 23: protected override IAsyncResult OnBeginOnlineAnnouncement(DiscoveryMessageSequence messageSequence, EndpointDiscoveryMetadata endpointDiscoveryMetadata, AsyncCallback callback, object state) 24: { 25: throw new NotImplementedException(); 26: } 27: 28: protected override IAsyncResult OnBeginResolve(ResolveCriteria resolveCriteria, AsyncCallback callback, object state) 29: { 30: throw new NotImplementedException(); 31: } 32: 33: protected override void OnEndFind(IAsyncResult result) 34: { 35: throw new NotImplementedException(); 36: } 37: 38: protected override void OnEndOfflineAnnouncement(IAsyncResult result) 39: { 40: throw new NotImplementedException(); 41: } 42: 43: protected override void OnEndOnlineAnnouncement(IAsyncResult result) 44: { 45: throw new NotImplementedException(); 46: } 47: 48: protected override EndpointDiscoveryMetadata OnEndResolve(IAsyncResult result) 49: { 50: throw new NotImplementedException(); 51: } 52: } 53: } Then let’s implement the online, offline and find methods one by one. WCF discovery service gives us full flexibility to implement the endpoint add, remove and find logic. For the demo purpose we will use an internal dictionary to store the services’ endpoint metadata. In the next post we will see how to serialize and store these information in database. Define a concurrent dictionary inside the service class since our it will be used in the multiple threads scenario. 1: [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)] 2: public class ManagedProxyDiscoveryService : DiscoveryProxy 3: { 4: private ConcurrentDictionary<EndpointAddress, EndpointDiscoveryMetadata> _services; 5: 6: public ManagedProxyDiscoveryService() 7: { 8: _services = new ConcurrentDictionary<EndpointAddress, EndpointDiscoveryMetadata>(); 9: } 10: } Then we can simply implement the logic of service online and offline. 1: protected override IAsyncResult OnBeginOnlineAnnouncement(DiscoveryMessageSequence messageSequence, EndpointDiscoveryMetadata endpointDiscoveryMetadata, AsyncCallback callback, object state) 2: { 3: _services.AddOrUpdate(endpointDiscoveryMetadata.Address, endpointDiscoveryMetadata, (key, value) => endpointDiscoveryMetadata); 4: return new OnOnlineAnnouncementAsyncResult(callback, state); 5: } 6: 7: protected override void OnEndOnlineAnnouncement(IAsyncResult result) 8: { 9: OnOnlineAnnouncementAsyncResult.End(result); 10: } 11: 12: protected override IAsyncResult OnBeginOfflineAnnouncement(DiscoveryMessageSequence messageSequence, EndpointDiscoveryMetadata endpointDiscoveryMetadata, AsyncCallback callback, object state) 13: { 14: EndpointDiscoveryMetadata endpoint = null; 15: _services.TryRemove(endpointDiscoveryMetadata.Address, out endpoint); 16: return new OnOfflineAnnouncementAsyncResult(callback, state); 17: } 18: 19: protected override void OnEndOfflineAnnouncement(IAsyncResult result) 20: { 21: OnOfflineAnnouncementAsyncResult.End(result); 22: } Regards the find method, the parameter FindRequestContext.Criteria has a method named IsMatch, which can be use for us to evaluate which service metadata is satisfied with the criteria. So the implementation of find method would be like this. 1: protected override IAsyncResult OnBeginFind(FindRequestContext findRequestContext, AsyncCallback callback, object state) 2: { 3: _services.Where(s => findRequestContext.Criteria.IsMatch(s.Value)) 4: .Select(s => s.Value) 5: .All(meta => 6: { 7: findRequestContext.AddMatchingEndpoint(meta); 8: return true; 9: }); 10: return new OnFindAsyncResult(callback, state); 11: } 12: 13: protected override void OnEndFind(IAsyncResult result) 14: { 15: OnFindAsyncResult.End(result); 16: } As you can see, we checked all endpoints metadata in repository by invoking the IsMatch method. Then add all proper endpoints metadata into the parameter. Finally since all these methods are asynchronized we need some AsyncResult classes as well. Below are the base class and the inherited classes used in previous methods. 1: using System; 2: using System.Collections.Generic; 3: using System.Linq; 4: using System.Text; 5: using System.Threading; 6: 7: namespace Phare.Service 8: { 9: abstract internal class AsyncResult : IAsyncResult 10: { 11: AsyncCallback callback; 12: bool completedSynchronously; 13: bool endCalled; 14: Exception exception; 15: bool isCompleted; 16: ManualResetEvent manualResetEvent; 17: object state; 18: object thisLock; 19: 20: protected AsyncResult(AsyncCallback callback, object state) 21: { 22: this.callback = callback; 23: this.state = state; 24: this.thisLock = new object(); 25: } 26: 27: public object AsyncState 28: { 29: get 30: { 31: return state; 32: } 33: } 34: 35: public WaitHandle AsyncWaitHandle 36: { 37: get 38: { 39: if (manualResetEvent != null) 40: { 41: return manualResetEvent; 42: } 43: lock (ThisLock) 44: { 45: if (manualResetEvent == null) 46: { 47: manualResetEvent = new ManualResetEvent(isCompleted); 48: } 49: } 50: return manualResetEvent; 51: } 52: } 53: 54: public bool CompletedSynchronously 55: { 56: get 57: { 58: return completedSynchronously; 59: } 60: } 61: 62: public bool IsCompleted 63: { 64: get 65: { 66: return isCompleted; 67: } 68: } 69: 70: object ThisLock 71: { 72: get 73: { 74: return this.thisLock; 75: } 76: } 77: 78: protected static TAsyncResult End<TAsyncResult>(IAsyncResult result) 79: where TAsyncResult : AsyncResult 80: { 81: if (result == null) 82: { 83: throw new ArgumentNullException("result"); 84: } 85: 86: TAsyncResult asyncResult = result as TAsyncResult; 87: 88: if (asyncResult == null) 89: { 90: throw new ArgumentException("Invalid async result.", "result"); 91: } 92: 93: if (asyncResult.endCalled) 94: { 95: throw new InvalidOperationException("Async object already ended."); 96: } 97: 98: asyncResult.endCalled = true; 99: 100: if (!asyncResult.isCompleted) 101: { 102: asyncResult.AsyncWaitHandle.WaitOne(); 103: } 104: 105: if (asyncResult.manualResetEvent != null) 106: { 107: asyncResult.manualResetEvent.Close(); 108: } 109: 110: if (asyncResult.exception != null) 111: { 112: throw asyncResult.exception; 113: } 114: 115: return asyncResult; 116: } 117: 118: protected void Complete(bool completedSynchronously) 119: { 120: if (isCompleted) 121: { 122: throw new InvalidOperationException("This async result is already completed."); 123: } 124: 125: this.completedSynchronously = completedSynchronously; 126: 127: if (completedSynchronously) 128: { 129: this.isCompleted = true; 130: } 131: else 132: { 133: lock (ThisLock) 134: { 135: this.isCompleted = true; 136: if (this.manualResetEvent != null) 137: { 138: this.manualResetEvent.Set(); 139: } 140: } 141: } 142: 143: if (callback != null) 144: { 145: callback(this); 146: } 147: } 148: 149: protected void Complete(bool completedSynchronously, Exception exception) 150: { 151: this.exception = exception; 152: Complete(completedSynchronously); 153: } 154: } 155: } 1: using System; 2: using System.Collections.Generic; 3: using System.Linq; 4: using System.Text; 5: using System.ServiceModel.Discovery; 6: using Phare.Service; 7: 8: namespace Phare.Service 9: { 10: internal sealed class OnOnlineAnnouncementAsyncResult : AsyncResult 11: { 12: public OnOnlineAnnouncementAsyncResult(AsyncCallback callback, object state) 13: : base(callback, state) 14: { 15: this.Complete(true); 16: } 17: 18: public static void End(IAsyncResult result) 19: { 20: AsyncResult.End<OnOnlineAnnouncementAsyncResult>(result); 21: } 22: 23: } 24: 25: sealed class OnOfflineAnnouncementAsyncResult : AsyncResult 26: { 27: public OnOfflineAnnouncementAsyncResult(AsyncCallback callback, object state) 28: : base(callback, state) 29: { 30: this.Complete(true); 31: } 32: 33: public static void End(IAsyncResult result) 34: { 35: AsyncResult.End<OnOfflineAnnouncementAsyncResult>(result); 36: } 37: } 38: 39: sealed class OnFindAsyncResult : AsyncResult 40: { 41: public OnFindAsyncResult(AsyncCallback callback, object state) 42: : base(callback, state) 43: { 44: this.Complete(true); 45: } 46: 47: public static void End(IAsyncResult result) 48: { 49: AsyncResult.End<OnFindAsyncResult>(result); 50: } 51: } 52: 53: sealed class OnResolveAsyncResult : AsyncResult 54: { 55: EndpointDiscoveryMetadata matchingEndpoint; 56: 57: public OnResolveAsyncResult(EndpointDiscoveryMetadata matchingEndpoint, AsyncCallback callback, object state) 58: : base(callback, state) 59: { 60: this.matchingEndpoint = matchingEndpoint; 61: this.Complete(true); 62: } 63: 64: public static EndpointDiscoveryMetadata End(IAsyncResult result) 65: { 66: OnResolveAsyncResult thisPtr = AsyncResult.End<OnResolveAsyncResult>(result); 67: return thisPtr.matchingEndpoint; 68: } 69: } 70: } Now we have finished the discovery service. The next step is to host it. The discovery service is a standard WCF service. So we can use ServiceHost on a console application, windows service, or in IIS as usual. The following code is how to host the discovery service we had just created in a console application. 1: static void Main(string[] args) 2: { 3: using (var host = new ServiceHost(new ManagedProxyDiscoveryService())) 4: { 5: host.Opened += (sender, e) => 6: { 7: host.Description.Endpoints.All((ep) => 8: { 9: Console.WriteLine(ep.ListenUri); 10: return true; 11: }); 12: }; 13: 14: try 15: { 16: // retrieve the announcement, probe endpoint and binding from configuration 17: var announcementEndpointAddress = new EndpointAddress(ConfigurationManager.AppSettings["announcementEndpointAddress"]); 18: var probeEndpointAddress = new EndpointAddress(ConfigurationManager.AppSettings["probeEndpointAddress"]); 19: var binding = Activator.CreateInstance(Type.GetType(ConfigurationManager.AppSettings["bindingType"], true, true)) as Binding; 20: var announcementEndpoint = new AnnouncementEndpoint(binding, announcementEndpointAddress); 21: var probeEndpoint = new DiscoveryEndpoint(binding, probeEndpointAddress); 22: probeEndpoint.IsSystemEndpoint = false; 23: // append the service endpoint for announcement and probe 24: host.AddServiceEndpoint(announcementEndpoint); 25: host.AddServiceEndpoint(probeEndpoint); 26: 27: host.Open(); 28: 29: Console.WriteLine("Press any key to exit."); 30: Console.ReadKey(); 31: } 32: catch (Exception ex) 33: { 34: Console.WriteLine(ex.ToString()); 35: } 36: } 37: 38: Console.WriteLine("Done."); 39: Console.ReadKey(); 40: } What we need to notice is that, the discovery service needs two endpoints for announcement and probe. In this example I just retrieve them from the configuration file. I also specified the binding of these two endpoints in configuration file as well. 1: <?xml version="1.0"?> 2: <configuration> 3: <startup> 4: <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/> 5: </startup> 6: <appSettings> 7: <add key="announcementEndpointAddress" value="net.tcp://localhost:10010/announcement"/> 8: <add key="probeEndpointAddress" value="net.tcp://localhost:10011/probe"/> 9: <add key="bindingType" value="System.ServiceModel.NetTcpBinding, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/> 10: </appSettings> 11: </configuration> And this is the console screen when I ran my discovery service. As you can see there are two endpoints listening for announcement message and probe message. Discoverable Service and Client Next, let’s create a WCF service that is discoverable, which means it can be found by the discovery service. To do so, we need to let the service send the online announcement message to the discovery service, as well as offline message before it shutdown. Just create a simple service which can make the incoming string to upper. The service contract and implementation would be like this. 1: [ServiceContract] 2: public interface IStringService 3: { 4: [OperationContract] 5: string ToUpper(string content); 6: } 1: public class StringService : IStringService 2: { 3: public string ToUpper(string content) 4: { 5: return content.ToUpper(); 6: } 7: } Then host this service in the console application. In order to make the discovery service easy to be tested the service address will be changed each time it’s started. 1: static void Main(string[] args) 2: { 3: var baseAddress = new Uri(string.Format("net.tcp://localhost:11001/stringservice/{0}/", Guid.NewGuid().ToString())); 4: 5: using (var host = new ServiceHost(typeof(StringService), baseAddress)) 6: { 7: host.Opened += (sender, e) => 8: { 9: Console.WriteLine("Service opened at {0}", host.Description.Endpoints.First().ListenUri); 10: }; 11: 12: host.AddServiceEndpoint(typeof(IStringService), new NetTcpBinding(), string.Empty); 13: 14: host.Open(); 15: 16: Console.WriteLine("Press any key to exit."); 17: Console.ReadKey(); 18: } 19: } Currently this service is NOT discoverable. We need to add a special service behavior so that it could send the online and offline message to the discovery service announcement endpoint when the host is opened and closed. WCF 4.0 introduced a service behavior named ServiceDiscoveryBehavior. When we specified the announcement endpoint address and appended it to the service behaviors this service will be discoverable. 1: var announcementAddress = new EndpointAddress(ConfigurationManager.AppSettings["announcementEndpointAddress"]); 2: var announcementBinding = Activator.CreateInstance(Type.GetType(ConfigurationManager.AppSettings["bindingType"], true, true)) as Binding; 3: var announcementEndpoint = new AnnouncementEndpoint(announcementBinding, announcementAddress); 4: var discoveryBehavior = new ServiceDiscoveryBehavior(); 5: discoveryBehavior.AnnouncementEndpoints.Add(announcementEndpoint); 6: host.Description.Behaviors.Add(discoveryBehavior); The ServiceDiscoveryBehavior utilizes the service extension and channel dispatcher to implement the online and offline announcement logic. In short, it injected the channel open and close procedure and send the online and offline message to the announcement endpoint. On client side, when we have the discovery service, a client can invoke a service without knowing its endpoint. WCF discovery assembly provides a class named DiscoveryClient, which can be used to find the proper service endpoint by passing the criteria. In the code below I initialized the DiscoveryClient, specified the discovery service probe endpoint address. Then I created the find criteria by specifying the service contract I wanted to use and invoke the Find method. This will send the probe message to the discovery service and it will find the endpoints back to me. The discovery service will return all endpoints that matches the find criteria, which means in the result of the find method there might be more than one endpoints. In this example I just returned the first matched one back. In the next post I will show how to extend our discovery service to make it work like a service load balancer. 1: static EndpointAddress FindServiceEndpoint() 2: { 3: var probeEndpointAddress = new EndpointAddress(ConfigurationManager.AppSettings["probeEndpointAddress"]); 4: var probeBinding = Activator.CreateInstance(Type.GetType(ConfigurationManager.AppSettings["bindingType"], true, true)) as Binding; 5: var discoveryEndpoint = new DiscoveryEndpoint(probeBinding, probeEndpointAddress); 6: 7: EndpointAddress address = null; 8: FindResponse result = null; 9: using (var discoveryClient = new DiscoveryClient(discoveryEndpoint)) 10: { 11: result = discoveryClient.Find(new FindCriteria(typeof(IStringService))); 12: } 13: 14: if (result != null && result.Endpoints.Any()) 15: { 16: var endpointMetadata = result.Endpoints.First(); 17: address = endpointMetadata.Address; 18: } 19: return address; 20: } Once we probed the discovery service we will receive the endpoint. So in the client code we can created the channel factory from the endpoint and binding, and invoke to the service. When creating the client side channel factory we need to make sure that the client side binding should be the same as the service side. WCF discovery service can be used to find the endpoint for a service contract, but the binding is NOT included. This is because the binding was not in the WS-Discovery specification. In the next post I will demonstrate how to add the binding information into the discovery service. At that moment the client don’t need to create the binding by itself. Instead it will use the binding received from the discovery service. 1: static void Main(string[] args) 2: { 3: Console.WriteLine("Say something..."); 4: var content = Console.ReadLine(); 5: while (!string.IsNullOrWhiteSpace(content)) 6: { 7: Console.WriteLine("Finding the service endpoint..."); 8: var address = FindServiceEndpoint(); 9: if (address == null) 10: { 11: Console.WriteLine("There is no endpoint matches the criteria."); 12: } 13: else 14: { 15: Console.WriteLine("Found the endpoint {0}", address.Uri); 16: 17: var factory = new ChannelFactory<IStringService>(new NetTcpBinding(), address); 18: factory.Opened += (sender, e) => 19: { 20: Console.WriteLine("Connecting to {0}.", factory.Endpoint.ListenUri); 21: }; 22: var proxy = factory.CreateChannel(); 23: using (proxy as IDisposable) 24: { 25: Console.WriteLine("ToUpper: {0} => {1}", content, proxy.ToUpper(content)); 26: } 27: } 28: 29: Console.WriteLine("Say something..."); 30: content = Console.ReadLine(); 31: } 32: } Similarly, the discovery service probe endpoint and binding were defined in the configuration file. 1: <?xml version="1.0"?> 2: <configuration> 3: <startup> 4: <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/> 5: </startup> 6: <appSettings> 7: <add key="announcementEndpointAddress" value="net.tcp://localhost:10010/announcement"/> 8: <add key="probeEndpointAddress" value="net.tcp://localhost:10011/probe"/> 9: <add key="bindingType" value="System.ServiceModel.NetTcpBinding, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/> 10: </appSettings> 11: </configuration> OK, now let’s have a test. Firstly start the discovery service, and then start our discoverable service. When it started it will announced to the discovery service and registered its endpoint into the repository, which is the local dictionary. And then start the client and type something. As you can see the client asked the discovery service for the endpoint and then establish the connection to the discoverable service. And more interesting, do NOT close the client console but terminate the discoverable service but press the enter key. This will make the service send the offline message to the discovery service. Then start the discoverable service again. Since we made it use a different address each time it started, currently it should be hosted on another address. If we enter something in the client we could see that it asked the discovery service and retrieve the new endpoint, and connect the the service. Summary In this post I discussed the benefit of using the discovery service and the procedures of service announcement and probe. I also demonstrated how to leverage the WCF Discovery feature in WCF 4.0 to build a simple managed discovery service. For test purpose, in this example I used the in memory dictionary as the discovery endpoint metadata repository. And when finding I also just return the first matched endpoint back. I also hard coded the bindings between the discoverable service and the client. In next post I will show you how to solve the problem mentioned above, as well as some additional feature for production usage. You can download the code here. Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

Read the article

Node.js Adventure - When Node Flying in Wind

- by Shaun

In the first post of this series I mentioned some popular modules in the community, such as underscore, async, etc.. I also listed a module named “Wind (zh-CN)”, which is created by one of my friend, Jeff Zhao (zh-CN). Now I would like to use a separated post to introduce this module since I feel it brings a new async programming style in not only Node.js but JavaScript world. If you know or heard about the new feature in C# 5.0 called “async and await”, or you learnt F#, you will find the “Wind” brings the similar async programming experience in JavaScript. By using “Wind”, we can write async code that looks like the sync code. The callbacks, async stats and exceptions will be handled by “Wind” automatically and transparently. What’s the Problem: Dense “Callback” Phobia Let’s firstly back to my second post in this series. As I mentioned in that post, when we wanted to read some records from SQL Server we need to open the database connection, and then execute the query. In Node.js all IO operation are designed as async callback pattern which means when the operation was done, it will invoke a function which was taken from the last parameter. For example the database connection opening code would be like this. 1: sql.open(connectionString, function(error, conn) { 2: if(error) { 3: // some error handling code 4: } 5: else { 6: // connection opened successfully 7: } 8: }); And then if we need to query the database the code would be like this. It nested in the previous function. 1: sql.open(connectionString, function(error, conn) { 2: if(error) { 3: // some error handling code 4: } 5: else { 6: // connection opened successfully 7: conn.queryRaw(command, function(error, results) { 8: if(error) { 9: // failed to execute this command 10: } 11: else { 12: // records retrieved successfully 13: } 14: }; 15: } 16: }); Assuming if we need to copy some data from this database to another then we need to open another connection and execute the command within the function under the query function. 1: sql.open(connectionString, function(error, conn) { 2: if(error) { 3: // some error handling code 4: } 5: else { 6: // connection opened successfully 7: conn.queryRaw(command, function(error, results) { 8: if(error) { 9: // failed to execute this command 10: } 11: else { 12: // records retrieved successfully 13: target.open(targetConnectionString, function(error, t_conn) { 14: if(error) { 15: // connect failed 16: } 17: else { 18: t_conn.queryRaw(copy_command, function(error, results) { 19: if(error) { 20: // copy failed 21: } 22: else { 23: // and then, what do you want to do now... 24: } 25: }; 26: } 27: }; 28: } 29: }; 30: } 31: }); This is just an example. In the real project the logic would be more complicated. This means our application might be messed up and the business process will be fragged by many callback functions. I would like call this “Dense Callback Phobia”. This might be a challenge how to make code straightforward and easy to read, something like below. 1: try 2: { 3: // open source connection 4: var s_conn = sqlConnect(s_connectionString); 5: // retrieve data 6: var results = sqlExecuteCommand(s_conn, s_command); 7: 8: // open target connection 9: var t_conn = sqlConnect(t_connectionString); 10: // prepare the copy command 11: var t_command = getCopyCommand(results); 12: // execute the copy command 13: sqlExecuteCommand(s_conn, t_command); 14: } 15: catch (ex) 16: { 17: // error handling 18: } What’s the Problem: Sync-styled Async Programming Similar as the previous problem, the callback-styled async programming model makes the upcoming operation as a part of the current operation, and mixed with the error handling code. So it’s very hard to understand what on earth this code will do. And since Node.js utilizes non-blocking IO mode, we cannot invoke those operations one by one, as they will be executed concurrently. For example, in this post when I tried to copy the records from Windows Azure SQL Database (a.k.a. WASD) to Windows Azure Table Storage, if I just insert the data into table storage one by one and then print the “Finished” message, I will see the message shown before the data had been copied. This is because all operations were executed at the same time. In order to make the copy operation and print operation executed synchronously I introduced a module named “async” and the code was changed as below. 1: async.forEach(results.rows, 2: function (row, callback) { 3: var resource = { 4: "PartitionKey": row[1], 5: "RowKey": row[0], 6: "Value": row[2] 7: }; 8: client.insertEntity(tableName, resource, function (error) { 9: if (error) { 10: callback(error); 11: } 12: else { 13: console.log("entity inserted."); 14: callback(null); 15: } 16: }); 17: }, 18: function (error) { 19: if (error) { 20: error["target"] = "insertEntity"; 21: res.send(500, error); 22: } 23: else { 24: console.log("all done."); 25: res.send(200, "Done!"); 26: } 27: }); It ensured that the “Finished” message will be printed when all table entities had been inserted. But it cannot promise that the records will be inserted in sequence. It might be another challenge to make the code looks like in sync-style? 1: try 2: { 3: forEach(row in rows) { 4: var entity = { /* ... */ }; 5: tableClient.insert(tableName, entity); 6: } 7: 8: console.log("Finished"); 9: } 10: catch (ex) { 11: console.log(ex); 12: } How “Wind” Helps “Wind” is a JavaScript library which provides the control flow with plain JavaScript for asynchronous programming (and more) without additional pre-compiling steps. It’s available in NPM so that we can install it through “npm install wind”. Now let’s create a very simple Node.js application as the example. This application will take some website URLs from the command arguments and tried to retrieve the body length and print them in console. Then at the end print “Finish”. I’m going to use “request” module to make the HTTP call simple so I also need to install by the command “npm install request”. The code would be like this. 1: var request = require("request"); 2: 3: // get the urls from arguments, the first two arguments are `node.exe` and `fetch.js` 4: var args = process.argv.splice(2); 5: 6: // main function 7: var main = function() { 8: for(var i = 0; i < args.length; i++) { 9: // get the url 10: var url = args[i]; 11: // send the http request and try to get the response and body 12: request(url, function(error, response, body) { 13: if(!error && response.statusCode == 200) { 14: // log the url and the body length 15: console.log( 16: "%s: %d.", 17: response.request.uri.href, 18: body.length); 19: } 20: else { 21: // log error 22: console.log(error); 23: } 24: }); 25: } 26: 27: // finished 28: console.log("Finished"); 29: }; 30: 31: // execute the main function 32: main(); Let’s execute this application. (I made them in multi-lines for better reading.) 1: node fetch.js 2: "http://www.igt.com/us-en.aspx" 3: "http://www.igt.com/us-en/games.aspx" 4: "http://www.igt.com/us-en/cabinets.aspx" 5: "http://www.igt.com/us-en/systems.aspx" 6: "http://www.igt.com/us-en/interactive.aspx" 7: "http://www.igt.com/us-en/social-gaming.aspx" 8: "http://www.igt.com/support.aspx" Below is the output. As you can see the finish message was printed at the beginning, and the pages’ length retrieved in a different order than we specified. This is because in this code the request command, console logging command are executed asynchronously and concurrently. Now let’s introduce “Wind” to make them executed in order, which means it will request the websites one by one, and print the message at the end. First of all we need to import the “Wind” package and make sure the there’s only one global variant named “Wind”, and ensure it’s “Wind” instead of “wind”. 1: var Wind = require("wind"); Next, we need to tell “Wind” which code will be executed asynchronously so that “Wind” can control the execution process. In this case the “request” operation executed asynchronously so we will create a “Task” by using a build-in helps function in “Wind” named Wind.Async.Task.create. 1: var requestBodyLengthAsync = function(url) { 2: return Wind.Async.Task.create(function(t) { 3: request(url, function(error, response, body) { 4: if(error || response.statusCode != 200) { 5: t.complete("failure", error); 6: } 7: else { 8: var data = 9: { 10: uri: response.request.uri.href, 11: length: body.length 12: }; 13: t.complete("success", data); 14: } 15: }); 16: }); 17: }; The code above created a “Task” from the original request calling code. In “Wind” a “Task” means an operation will be finished in some time in the future. A “Task” can be started by invoke its start() method, but no one knows when it actually will be finished. The Wind.Async.Task.create helped us to create a task. The only parameter is a function where we can put the actual operation in, and then notify the task object it’s finished successfully or failed by using the complete() method. In the code above I invoked the request method. If it retrieved the response successfully I set the status of this task as “success” with the URL and body length. If it failed I set this task as “failure” and pass the error out. Next, we will change the main() function. In “Wind” if we want a function can be controlled by Wind we need to mark it as “async”. This should be done by using the code below. 1: var main = eval(Wind.compile("async", function() { 2: })); When the application is running, Wind will detect “eval(Wind.compile(“async”, function” and generate an anonymous code from the body of this original function. Then the application will run the anonymous code instead of the original one. In our example the main function will be like this. 1: var main = eval(Wind.compile("async", function() { 2: for(var i = 0; i < args.length; i++) { 3: try 4: { 5: var result = $await(requestBodyLengthAsync(args[i])); 6: console.log( 7: "%s: %d.", 8: result.uri, 9: result.length); 10: } 11: catch (ex) { 12: console.log(ex); 13: } 14: } 15: 16: console.log("Finished"); 17: })); As you can see, when I tried to request the URL I use a new command named “$await”. It tells Wind, the operation next to $await will be executed asynchronously, and the main thread should be paused until it finished (or failed). So in this case, my application will be pause when the first response was received, and then print its body length, then try the next one. At the end, print the finish message. Finally, execute the main function. The full code would be like this. 1: var request = require("request"); 2: var Wind = require("wind"); 3: 4: var args = process.argv.splice(2); 5: 6: var requestBodyLengthAsync = function(url) { 7: return Wind.Async.Task.create(function(t) { 8: request(url, function(error, response, body) { 9: if(error || response.statusCode != 200) { 10: t.complete("failure", error); 11: } 12: else { 13: var data = 14: { 15: uri: response.request.uri.href, 16: length: body.length 17: }; 18: t.complete("success", data); 19: } 20: }); 21: }); 22: }; 23: 24: var main = eval(Wind.compile("async", function() { 25: for(var i = 0; i < args.length; i++) { 26: try 27: { 28: var result = $await(requestBodyLengthAsync(args[i])); 29: console.log( 30: "%s: %d.", 31: result.uri, 32: result.length); 33: } 34: catch (ex) { 35: console.log(ex); 36: } 37: } 38: 39: console.log("Finished"); 40: })); 41: 42: main().start(); Run our new application. At the beginning we will see the compiled and generated code by Wind. Then we can see the pages were requested one by one, and at the end the finish message was printed. Below is the code Wind generated for us. As you can see the original code, the output code were shown. 1: // Original: 2: function () { 3: for(var i = 0; i < args.length; i++) { 4: try 5: { 6: var result = $await(requestBodyLengthAsync(args[i])); 7: console.log( 8: "%s: %d.", 9: result.uri, 10: result.length); 11: } 12: catch (ex) { 13: console.log(ex); 14: } 15: } 16: 17: console.log("Finished"); 18: } 19: 20: // Compiled: 21: /* async << function () { */ (function () { 22: var _builder_$0 = Wind.builders["async"]; 23: return _builder_$0.Start(this, 24: _builder_$0.Combine( 25: _builder_$0.Delay(function () { 26: /* var i = 0; */ var i = 0; 27: /* for ( */ return _builder_$0.For(function () { 28: /* ; i < args.length */ return i < args.length; 29: }, function () { 30: /* ; i ++) { */ i ++; 31: }, 32: /* try { */ _builder_$0.Try( 33: _builder_$0.Delay(function () { 34: /* var result = $await(requestBodyLengthAsync(args[i])); */ return _builder_$0.Bind(requestBodyLengthAsync(args[i]), function (result) { 35: /* console.log("%s: %d.", result.uri, result.length); */ console.log("%s: %d.", result.uri, result.length); 36: return _builder_$0.Normal(); 37: }); 38: }), 39: /* } catch (ex) { */ function (ex) { 40: /* console.log(ex); */ console.log(ex); 41: return _builder_$0.Normal(); 42: /* } */ }, 43: null 44: ) 45: /* } */ ); 46: }), 47: _builder_$0.Delay(function () { 48: /* console.log("Finished"); */ console.log("Finished"); 49: return _builder_$0.Normal(); 50: }) 51: ) 52: ); 53: /* } */ }) How Wind Works Someone may raise a big concern when you find I utilized “eval” in my code. Someone may assume that Wind utilizes “eval” to execute some code dynamically while “eval” is very low performance. But I would say, Wind does NOT use “eval” to run the code. It only use “eval” as a flag to know which code should be compiled at runtime. When the code was firstly been executed, Wind will check and find “eval(Wind.compile(“async”, function”. So that it knows this function should be compiled. Then it utilized parse-js to analyze the inner JavaScript and generated the anonymous code in memory. Then it rewrite the original code so that when the application was running it will use the anonymous one instead of the original one. Since the code generation was done at the beginning of the application was started, in the future no matter how long our application runs and how many times the async function was invoked, it will use the generated code, no need to generate again. So there’s no significant performance hurt when using Wind. Wind in My Previous Demo Let’s adopt Wind into one of my previous demonstration and to see how it helps us to make our code simple, straightforward and easy to read and understand. In this post when I implemented the functionality that copied the records from my WASD to table storage, the logic would be like this. 1, Open database connection. 2, Execute a query to select all records from the table. 3, Recreate the table in Windows Azure table storage. 4, Create entities from each of the records retrieved previously, and then insert them into table storage. 5, Finally, show message as the HTTP response. But as the image below, since there are so many callbacks and async operations, it’s very hard to understand my logic from the code. Now let’s use Wind to rewrite our code. First of all, of course, we need the Wind package. Then we need to include the package files into project and mark them as “Copy always”. Add the Wind package into the source code. Pay attention to the variant name, you must use “Wind” instead of “wind”. 1: var express = require("express"); 2: var async = require("async"); 3: var sql = require("node-sqlserver"); 4: var azure = require("azure"); 5: var Wind = require("wind"); Now we need to create some async functions by using Wind. All async functions should be wrapped so that it can be controlled by Wind which are open database, retrieve records, recreate table (delete and create) and insert entity in table. Below are these new functions. All of them are created by using Wind.Async.Task.create. 1: sql.openAsync = function (connectionString) { 2: return Wind.Async.Task.create(function (t) { 3: sql.open(connectionString, function (error, conn) { 4: if (error) { 5: t.complete("failure", error); 6: } 7: else { 8: t.complete("success", conn); 9: } 10: }); 11: }); 12: }; 13: 14: sql.queryAsync = function (conn, query) { 15: return Wind.Async.Task.create(function (t) { 16: conn.queryRaw(query, function (error, results) { 17: if (error) { 18: t.complete("failure", error); 19: } 20: else { 21: t.complete("success", results); 22: } 23: }); 24: }); 25: }; 26: 27: azure.recreateTableAsync = function (tableName) { 28: return Wind.Async.Task.create(function (t) { 29: client.deleteTable(tableName, function (error, successful, response) { 30: console.log("delete table finished"); 31: client.createTableIfNotExists(tableName, function (error, successful, response) { 32: console.log("create table finished"); 33: if (error) { 34: t.complete("failure", error); 35: } 36: else { 37: t.complete("success", null); 38: } 39: }); 40: }); 41: }); 42: }; 43: 44: azure.insertEntityAsync = function (tableName, entity) { 45: return Wind.Async.Task.create(function (t) { 46: client.insertEntity(tableName, entity, function (error, entity, response) { 47: if (error) { 48: t.complete("failure", error); 49: } 50: else { 51: t.complete("success", null); 52: } 53: }); 54: }); 55: }; Then in order to use these functions we will create a new function which contains all steps for data copying. 1: var copyRecords = eval(Wind.compile("async", function (req, res) { 2: try { 3: } 4: catch (ex) { 5: console.log(ex); 6: res.send(500, "Internal error."); 7: } 8: })); Let’s execute steps one by one with the “$await” keyword introduced by Wind so that it will be invoked in sequence. First is to open the database connection. 1: var copyRecords = eval(Wind.compile("async", function (req, res) { 2: try { 3: // connect to the windows azure sql database 4: var conn = $await(sql.openAsync(connectionString)); 5: console.log("connection opened"); 6: } 7: catch (ex) { 8: console.log(ex); 9: res.send(500, "Internal error."); 10: } 11: })); Then retrieve all records from the database connection. 1: var copyRecords = eval(Wind.compile("async", function (req, res) { 2: try { 3: // connect to the windows azure sql database 4: var conn = $await(sql.openAsync(connectionString)); 5: console.log("connection opened"); 6: // retrieve all records from database 7: var results = $await(sql.queryAsync(conn, "SELECT * FROM [Resource]")); 8: console.log("records selected. count = %d", results.rows.length); 9: } 10: catch (ex) { 11: console.log(ex); 12: res.send(500, "Internal error."); 13: } 14: })); After recreated the table, we need to create the entities and insert them into table storage. 1: var copyRecords = eval(Wind.compile("async", function (req, res) { 2: try { 3: // connect to the windows azure sql database 4: var conn = $await(sql.openAsync(connectionString)); 5: console.log("connection opened"); 6: // retrieve all records from database 7: var results = $await(sql.queryAsync(conn, "SELECT * FROM [Resource]")); 8: console.log("records selected. count = %d", results.rows.length); 9: if (results.rows.length > 0) { 10: // recreate the table 11: $await(azure.recreateTableAsync(tableName)); 12: console.log("table created"); 13: // insert records in table storage one by one 14: for (var i = 0; i < results.rows.length; i++) { 15: var entity = { 16: "PartitionKey": results.rows[i][1], 17: "RowKey": results.rows[i][0], 18: "Value": results.rows[i][2] 19: }; 20: $await(azure.insertEntityAsync(tableName, entity)); 21: console.log("entity inserted"); 22: } 23: } 24: } 25: catch (ex) { 26: console.log(ex); 27: res.send(500, "Internal error."); 28: } 29: })); Finally, send response back to the browser. 1: var copyRecords = eval(Wind.compile("async", function (req, res) { 2: try { 3: // connect to the windows azure sql database 4: var conn = $await(sql.openAsync(connectionString)); 5: console.log("connection opened"); 6: // retrieve all records from database 7: var results = $await(sql.queryAsync(conn, "SELECT * FROM [Resource]")); 8: console.log("records selected. count = %d", results.rows.length); 9: if (results.rows.length > 0) { 10: // recreate the table 11: $await(azure.recreateTableAsync(tableName)); 12: console.log("table created"); 13: // insert records in table storage one by one 14: for (var i = 0; i < results.rows.length; i++) { 15: var entity = { 16: "PartitionKey": results.rows[i][1], 17: "RowKey": results.rows[i][0], 18: "Value": results.rows[i][2] 19: }; 20: $await(azure.insertEntityAsync(tableName, entity)); 21: console.log("entity inserted"); 22: } 23: // send response 24: console.log("all done"); 25: res.send(200, "All done!"); 26: } 27: } 28: catch (ex) { 29: console.log(ex); 30: res.send(500, "Internal error."); 31: } 32: })); If we compared with the previous code we will find now it became more readable and much easy to understand. It’s very easy to know what this function does even though without any comments. When user go to URL “/was/copyRecords” we will execute the function above. The code would be like this. 1: app.get("/was/copyRecords", function (req, res) { 2: copyRecords(req, res).start(); 3: }); And below is the logs printed in local compute emulator console. As we can see the functions executed one by one and then finally the response back to me browser. Scaffold Functions in Wind Wind provides not only the async flow control and compile functions, but many scaffold methods as well. We can build our async code more easily by using them. I’m going to introduce some basic scaffold functions here. In the code above I created some functions which wrapped from the original async function such as open database, create table, etc.. All of them are very similar, created a task by using Wind.Async.Task.create, return error or result object through Task.complete function. In fact, Wind provides some functions for us to create task object from the original async functions. If the original async function only has a callback parameter, we can use Wind.Async.Binding.fromCallback method to get the task object directly. For example the code below returned the task object which wrapped the file exist check function. 1: var Wind = require("wind"); 2: var fs = require("fs"); 3: 4: fs.existsAsync = Wind.Async.Binding.fromCallback(fs.exists); In Node.js a very popular async function pattern is that, the first parameter in the callback function represent the error object, and the other parameters is the return values. In this case we can use another build-in function in Wind named Wind.Async.Binding.fromStandard. For example, the open database function can be created from the code below. 1: sql.openAsync = Wind.Async.Binding.fromStandard(sql.open); 2: 3: /* 4: sql.openAsync = function (connectionString) { 5: return Wind.Async.Task.create(function (t) { 6: sql.open(connectionString, function (error, conn) { 7: if (error) { 8: t.complete("failure", error); 9: } 10: else { 11: t.complete("success", conn); 12: } 13: }); 14: }); 15: }; 16: */ When I was testing the scaffold functions under Wind.Async.Binding I found for some functions, such as the Azure SDK insert entity function, cannot be processed correctly. So I personally suggest writing the wrapped method manually. Another scaffold method in Wind is the parallel tasks coordination. In this example, the steps of open database, retrieve records and recreated table should be invoked one by one, but it can be executed in parallel when copying data from database to table storage. In Wind there’s a scaffold function named Task.whenAll which can be used here. Task.whenAll accepts a list of tasks and creates a new task. It will be returned only when all tasks had been completed, or any errors occurred. For example in the code below I used the Task.whenAll to make all copy operation executed at the same time. 1: var copyRecordsInParallel = eval(Wind.compile("async", function (req, res) { 2: try { 3: // connect to the windows azure sql database 4: var conn = $await(sql.openAsync(connectionString)); 5: console.log("connection opened"); 6: // retrieve all records from database 7: var results = $await(sql.queryAsync(conn, "SELECT * FROM [Resource]")); 8: console.log("records selected. count = %d", results.rows.length); 9: if (results.rows.length > 0) { 10: // recreate the table 11: $await(azure.recreateTableAsync(tableName)); 12: console.log("table created"); 13: // insert records in table storage in parallal 14: var tasks = new Array(results.rows.length); 15: for (var i = 0; i < results.rows.length; i++) { 16: var entity = { 17: "PartitionKey": results.rows[i][1], 18: "RowKey": results.rows[i][0], 19: "Value": results.rows[i][2] 20: }; 21: tasks[i] = azure.insertEntityAsync(tableName, entity); 22: } 23: $await(Wind.Async.Task.whenAll(tasks)); 24: // send response 25: console.log("all done"); 26: res.send(200, "All done!"); 27: } 28: } 29: catch (ex) { 30: console.log(ex); 31: res.send(500, "Internal error."); 32: } 33: })); 34: 35: app.get("/was/copyRecordsInParallel", function (req, res) { 36: copyRecordsInParallel(req, res).start(); 37: }); Besides the task creation and coordination, Wind supports the cancellation solution so that we can send the cancellation signal to the tasks. It also includes exception solution which means any exceptions will be reported to the caller function. Summary In this post I introduced a Node.js module named Wind, which created by my friend Jeff Zhao. As you can see, different from other async library and framework, adopted the idea from F# and C#, Wind utilizes runtime code generation technology to make it more easily to write async, callback-based functions in a sync-style way. By using Wind there will be almost no callback, and the code will be very easy to understand. Currently Wind is still under developed and improved. There might be some problems but the author, Jeff, should be very happy and enthusiastic to learn your problems, feedback, suggestion and comments. You can contact Jeff by - Email: [email protected] - Group: https://groups.google.com/d/forum/windjs - GitHub: https://github.com/JeffreyZhao/wind/issues Source code can be download here. Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

Read the article

How LINQ to Object statements work

- by rajbk

This post goes into detail as to now LINQ statements work when querying a collection of objects. This topic assumes you have an understanding of how generics, delegates, implicitly typed variables, lambda expressions, object/collection initializers, extension methods and the yield statement work. I would also recommend you read my previous two posts: Using Delegates in C# Part 1 Using Delegates in C# Part 2 We will start by writing some methods to filter a collection of data. Assume we have an Employee class like so: 1: public class Employee { 2: public int ID { get; set;} 3: public string FirstName { get; set;} 4: public string LastName {get; set;} 5: public string Country { get; set; } 6: } and a collection of employees like so: 1: var employees = new List<Employee> { 2: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 3: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 4: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 5: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" }, 6: }; Filtering We wish to find all employees that have an even ID. We could start off by writing a method that takes in a list of employees and returns a filtered list of employees with an even ID. 1: static List<Employee> GetEmployeesWithEvenID(List<Employee> employees) { 2: var filteredEmployees = new List<Employee>(); 3: foreach (Employee emp in employees) { 4: if (emp.ID % 2 == 0) { 5: filteredEmployees.Add(emp); 6: } 7: } 8: return filteredEmployees; 9: } The method can be rewritten to return an IEnumerable<Employee> using the yield return keyword. 1: static IEnumerable<Employee> GetEmployeesWithEvenID(IEnumerable<Employee> employees) { 2: foreach (Employee emp in employees) { 3: if (emp.ID % 2 == 0) { 4: yield return emp; 5: } 6: } 7: } We put these together in a console application. 1: using System; 2: using System.Collections.Generic; 3: //No System.Linq 4: 5: public class Program 6: { 7: [STAThread] 8: static void Main(string[] args) 9: { 10: var employees = new List<Employee> { 11: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 12: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 13: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 14: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" }, 15: }; 16: var filteredEmployees = GetEmployeesWithEvenID(employees); 17: 18: foreach (Employee emp in filteredEmployees) { 19: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 20: emp.ID, emp.FirstName, emp.LastName, emp.Country); 21: } 22: 23: Console.ReadLine(); 24: } 25: 26: static IEnumerable<Employee> GetEmployeesWithEvenID(IEnumerable<Employee> employees) { 27: foreach (Employee emp in employees) { 28: if (emp.ID % 2 == 0) { 29: yield return emp; 30: } 31: } 32: } 33: } 34: 35: public class Employee { 36: public int ID { get; set;} 37: public string FirstName { get; set;} 38: public string LastName {get; set;} 39: public string Country { get; set; } 40: } Output: ID 2 First_Name Jim Last_Name Ashlock Country UK ID 4 First_Name Jill Last_Name Anderson Country AUS Our filtering method is too specific. Let us change it so that it is capable of doing different types of filtering and lets give our method the name Where ;-) We will add another parameter to our Where method. This additional parameter will be a delegate with the following declaration. public delegate bool Filter(Employee emp); The idea is that the delegate parameter in our Where method will point to a method that contains the logic to do our filtering thereby freeing our Where method from any dependency. The method is shown below: 1: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 2: foreach (Employee emp in employees) { 3: if (filter(emp)) { 4: yield return emp; 5: } 6: } 7: } Making the change to our app, we create a new instance of the Filter delegate on line 14 with a target set to the method EmployeeHasEvenId. Running the code will produce the same output. 1: public delegate bool Filter(Employee emp); 2: 3: public class Program 4: { 5: [STAThread] 6: static void Main(string[] args) 7: { 8: var employees = new List<Employee> { 9: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 10: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 11: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 12: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 13: }; 14: var filterDelegate = new Filter(EmployeeHasEvenId); 15: var filteredEmployees = Where(employees, filterDelegate); 16: 17: foreach (Employee emp in filteredEmployees) { 18: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 19: emp.ID, emp.FirstName, emp.LastName, emp.Country); 20: } 21: Console.ReadLine(); 22: } 23: 24: static bool EmployeeHasEvenId(Employee emp) { 25: return emp.ID % 2 == 0; 26: } 27: 28: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 29: foreach (Employee emp in employees) { 30: if (filter(emp)) { 31: yield return emp; 32: } 33: } 34: } 35: } 36: 37: public class Employee { 38: public int ID { get; set;} 39: public string FirstName { get; set;} 40: public string LastName {get; set;} 41: public string Country { get; set; } 42: } Lets use lambda expressions to inline the contents of the EmployeeHasEvenId method in place of the method. The next code snippet shows this change (see line 15). For brevity, the Employee class declaration has been skipped. 1: public delegate bool Filter(Employee emp); 2: 3: public class Program 4: { 5: [STAThread] 6: static void Main(string[] args) 7: { 8: var employees = new List<Employee> { 9: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 10: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 11: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 12: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 13: }; 14: var filterDelegate = new Filter(EmployeeHasEvenId); 15: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 16: 17: foreach (Employee emp in filteredEmployees) { 18: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 19: emp.ID, emp.FirstName, emp.LastName, emp.Country); 20: } 21: Console.ReadLine(); 22: } 23: 24: static bool EmployeeHasEvenId(Employee emp) { 25: return emp.ID % 2 == 0; 26: } 27: 28: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 29: foreach (Employee emp in employees) { 30: if (filter(emp)) { 31: yield return emp; 32: } 33: } 34: } 35: } 36: The output displays the same two employees. Our Where method is too restricted since it works with a collection of Employees only. Lets change it so that it works with any IEnumerable<T>. In addition, you may recall from my previous post, that .NET 3.5 comes with a lot of predefined delegates including public delegate TResult Func<T, TResult>(T arg); We will get rid of our Filter delegate and use the one above instead. We apply these two changes to our code. 1: public class Program 2: { 3: [STAThread] 4: static void Main(string[] args) 5: { 6: var employees = new List<Employee> { 7: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 8: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 9: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 10: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 11: }; 12: 13: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 14: 15: foreach (Employee emp in filteredEmployees) { 16: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 17: emp.ID, emp.FirstName, emp.LastName, emp.Country); 18: } 19: Console.ReadLine(); 20: } 21: 22: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 23: foreach (var x in source) { 24: if (filter(x)) { 25: yield return x; 26: } 27: } 28: } 29: } We have successfully implemented a way to filter any IEnumerable<T> based on a filter criteria. Projection Now lets enumerate on the items in the IEnumerable<Employee> we got from the Where method and copy them into a new IEnumerable<EmployeeFormatted>. The EmployeeFormatted class will only have a FullName and ID property. 1: public class EmployeeFormatted { 2: public int ID { get; set; } 3: public string FullName {get; set;} 4: } We could “project” our existing IEnumerable<Employee> into a new collection of IEnumerable<EmployeeFormatted> with the help of a new method. We will call this method Select ;-) 1: static IEnumerable<EmployeeFormatted> Select(IEnumerable<Employee> employees) { 2: foreach (var emp in employees) { 3: yield return new EmployeeFormatted { 4: ID = emp.ID, 5: FullName = emp.LastName + ", " + emp.FirstName 6: }; 7: } 8: } The changes are applied to our app. 1: public class Program 2: { 3: [STAThread] 4: static void Main(string[] args) 5: { 6: var employees = new List<Employee> { 7: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 8: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 9: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 10: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 11: }; 12: 13: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 14: var formattedEmployees = Select(filteredEmployees); 15: 16: foreach (EmployeeFormatted emp in formattedEmployees) { 17: Console.WriteLine("ID {0} Full_Name {1}", 18: emp.ID, emp.FullName); 19: } 20: Console.ReadLine(); 21: } 22: 23: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 24: foreach (var x in source) { 25: if (filter(x)) { 26: yield return x; 27: } 28: } 29: } 30: 31: static IEnumerable<EmployeeFormatted> Select(IEnumerable<Employee> employees) { 32: foreach (var emp in employees) { 33: yield return new EmployeeFormatted { 34: ID = emp.ID, 35: FullName = emp.LastName + ", " + emp.FirstName 36: }; 37: } 38: } 39: } 40: 41: public class Employee { 42: public int ID { get; set;} 43: public string FirstName { get; set;} 44: public string LastName {get; set;} 45: public string Country { get; set; } 46: } 47: 48: public class EmployeeFormatted { 49: public int ID { get; set; } 50: public string FullName {get; set;} 51: } Output: ID 2 Full_Name Ashlock, Jim ID 4 Full_Name Anderson, Jill We have successfully selected employees who have an even ID and then shaped our data with the help of the Select method so that the final result is an IEnumerable<EmployeeFormatted>. Lets make our Select method more generic so that the user is given the freedom to shape what the output would look like. We can do this, like before, with lambda expressions. Our Select method is changed to accept a delegate as shown below. TSource will be the type of data that comes in and TResult will be the type the user chooses (shape of data) as returned from the selector delegate. 1: 2: static IEnumerable<TResult> Select<TSource, TResult>(IEnumerable<TSource> source, Func<TSource, TResult> selector) { 3: foreach (var x in source) { 4: yield return selector(x); 5: } 6: } We see the new changes to our app. On line 15, we use lambda expression to specify the shape of the data. In this case the shape will be of type EmployeeFormatted. 1: 2: public class Program 3: { 4: [STAThread] 5: static void Main(string[] args) 6: { 7: var employees = new List<Employee> { 8: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 9: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 10: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 11: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 12: }; 13: 14: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 15: var formattedEmployees = Select(filteredEmployees, (emp) => 16: new EmployeeFormatted { 17: ID = emp.ID, 18: FullName = emp.LastName + ", " + emp.FirstName 19: }); 20: 21: foreach (EmployeeFormatted emp in formattedEmployees) { 22: Console.WriteLine("ID {0} Full_Name {1}", 23: emp.ID, emp.FullName); 24: } 25: Console.ReadLine(); 26: } 27: 28: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 29: foreach (var x in source) { 30: if (filter(x)) { 31: yield return x; 32: } 33: } 34: } 35: 36: static IEnumerable<TResult> Select<TSource, TResult>(IEnumerable<TSource> source, Func<TSource, TResult> selector) { 37: foreach (var x in source) { 38: yield return selector(x); 39: } 40: } 41: } The code outputs the same result as before. On line 14 we filter our data and on line 15 we project our data. What if we wanted to be more expressive and concise? We could combine both line 14 and 15 into one line as shown below. Assuming you had to perform several operations like this on our collection, you would end up with some very unreadable code! 1: var formattedEmployees = Select(Where(employees, emp => emp.ID % 2 == 0), (emp) => 2: new EmployeeFormatted { 3: ID = emp.ID, 4: FullName = emp.LastName + ", " + emp.FirstName 5: }); A cleaner way to write this would be to give the appearance that the Select and Where methods were part of the IEnumerable<T>. This is exactly what extension methods give us. Extension methods have to be defined in a static class. Let us make the Select and Where extension methods on IEnumerable<T> 1: public static class MyExtensionMethods { 2: static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 3: foreach (var x in source) { 4: if (filter(x)) { 5: yield return x; 6: } 7: } 8: } 9: 10: static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 11: foreach (var x in source) { 12: yield return selector(x); 13: } 14: } 15: } The creation of the extension method makes the syntax much cleaner as shown below. We can write as many extension methods as we want and keep on chaining them using this technique. 1: var formattedEmployees = employees 2: .Where(emp => emp.ID % 2 == 0) 3: .Select (emp => new EmployeeFormatted { ID = emp.ID, FullName = emp.LastName + ", " + emp.FirstName }); Making these changes and running our code produces the same result. 1: using System; 2: using System.Collections.Generic; 3: 4: public class Program 5: { 6: [STAThread] 7: static void Main(string[] args) 8: { 9: var employees = new List<Employee> { 10: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 11: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 12: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 13: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 14: }; 15: 16: var formattedEmployees = employees 17: .Where(emp => emp.ID % 2 == 0) 18: .Select (emp => 19: new EmployeeFormatted { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: } 23: ); 24: 25: foreach (EmployeeFormatted emp in formattedEmployees) { 26: Console.WriteLine("ID {0} Full_Name {1}", 27: emp.ID, emp.FullName); 28: } 29: Console.ReadLine(); 30: } 31: } 32: 33: public static class MyExtensionMethods { 34: static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 35: foreach (var x in source) { 36: if (filter(x)) { 37: yield return x; 38: } 39: } 40: } 41: 42: static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 43: foreach (var x in source) { 44: yield return selector(x); 45: } 46: } 47: } 48: 49: public class Employee { 50: public int ID { get; set;} 51: public string FirstName { get; set;} 52: public string LastName {get; set;} 53: public string Country { get; set; } 54: } 55: 56: public class EmployeeFormatted { 57: public int ID { get; set; } 58: public string FullName {get; set;} 59: } Let’s change our code to return a collection of anonymous types and get rid of the EmployeeFormatted type. We see that the code produces the same output. 1: using System; 2: using System.Collections.Generic; 3: 4: public class Program 5: { 6: [STAThread] 7: static void Main(string[] args) 8: { 9: var employees = new List<Employee> { 10: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 11: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 12: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 13: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 14: }; 15: 16: var formattedEmployees = employees 17: .Where(emp => emp.ID % 2 == 0) 18: .Select (emp => 19: new { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: } 23: ); 24: 25: foreach (var emp in formattedEmployees) { 26: Console.WriteLine("ID {0} Full_Name {1}", 27: emp.ID, emp.FullName); 28: } 29: Console.ReadLine(); 30: } 31: } 32: 33: public static class MyExtensionMethods { 34: public static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 35: foreach (var x in source) { 36: if (filter(x)) { 37: yield return x; 38: } 39: } 40: } 41: 42: public static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 43: foreach (var x in source) { 44: yield return selector(x); 45: } 46: } 47: } 48: 49: public class Employee { 50: public int ID { get; set;} 51: public string FirstName { get; set;} 52: public string LastName {get; set;} 53: public string Country { get; set; } 54: } To be more expressive, C# allows us to write our extension method calls as a query expression. Line 16 can be rewritten a query expression like so: 1: var formattedEmployees = from emp in employees 2: where emp.ID % 2 == 0 3: select new { 4: ID = emp.ID, 5: FullName = emp.LastName + ", " + emp.FirstName 6: }; When the compiler encounters an expression like the above, it simply rewrites it as calls to our extension methods. So far we have been using our extension methods. The System.Linq namespace contains several extension methods for objects that implement the IEnumerable<T>. You can see a listing of these methods in the Enumerable class in the System.Linq namespace. Let’s get rid of our extension methods (which I purposefully wrote to be of the same signature as the ones in the Enumerable class) and use the ones provided in the Enumerable class. Our final code is shown below: 1: using System; 2: using System.Collections.Generic; 3: using System.Linq; //Added 4: 5: public class Program 6: { 7: [STAThread] 8: static void Main(string[] args) 9: { 10: var employees = new List<Employee> { 11: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 12: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 13: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 14: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 15: }; 16: 17: var formattedEmployees = from emp in employees 18: where emp.ID % 2 == 0 19: select new { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: }; 23: 24: foreach (var emp in formattedEmployees) { 25: Console.WriteLine("ID {0} Full_Name {1}", 26: emp.ID, emp.FullName); 27: } 28: Console.ReadLine(); 29: } 30: } 31: 32: public class Employee { 33: public int ID { get; set;} 34: public string FirstName { get; set;} 35: public string LastName {get; set;} 36: public string Country { get; set; } 37: } 38: 39: public class EmployeeFormatted { 40: public int ID { get; set; } 41: public string FullName {get; set;} 42: } This post has shown you a basic overview of LINQ to Objects work by showning you how an expression is converted to a sequence of calls to extension methods when working directly with objects. It gets more interesting when working with LINQ to SQL where an expression tree is constructed – an in memory data representation of the expression. The C# compiler compiles these expressions into code that builds an expression tree at runtime. The provider can then traverse the expression tree and generate the appropriate SQL query. You can read more about expression trees in this MSDN article.

Search Results

Search found 15637 results on 626 pages for 'memory efficient'.

Page 622/626 | < Previous Page | 618 619 620 621 622 623 624 625 626 | Next Page >

- by Liu Maclean(???)

- by Alix

- by thaller

- by ticketman

- by Alix

- by eagle

- by Will

- by Pyrite

- by Pyrite

- by Terry Dunford

- by Evan Carroll

- by hap497

- by Lawrence

- by MasterRoot24

- by michael

- by michael

- by MasterRoot24

- by danneh3826

- by onepotato

- by Tobias Wiesenthal

- by svdoever

- by arreche

- by Shaun

- by Shaun

- by rajbk

< Previous Page | 618 619 620 621 622 623 624 625 626 | Next Page >