da coder - Page 42 - Developer IT

Repeated host lookups failing in urllib2

- by reve_etrange

I have code which issues many HTTP GET requests using Python's urllib2, in several threads, writing the responses into files (one per thread). During execution, it looks like many of the host lookups fail (causing a name or service unknown error, see appended error log for an example). Is this due to a flaky DNS service? Is it bad practice to rely on DNS caching, if the host name isn't changing? I.e. should a single lookup's result be passed into the urlopen? Exception in thread Thread-16: Traceback (most recent call last): File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner self.run() File "/home/da/local/bin/ThreadedDownloader.py", line 61, in run page = urllib2.urlopen(url) # get the page File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen return _opener.open(url, data, timeout) File "/usr/lib/python2.6/urllib2.py", line 391, in open response = self._open(req, data) File "/usr/lib/python2.6/urllib2.py", line 409, in _open '_open', req) File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain result = func(*args) File "/usr/lib/python2.6/urllib2.py", line 1170, in http_open return self.do_open(httplib.HTTPConnection, req) File "/usr/lib/python2.6/urllib2.py", line 1145, in do_open raise URLError(err) URLError: <urlopen error [Errno -2] Name or service not known>

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Pointer inside a struct / thread

- by bruno

Hi! I have this warning "warning: assignment from incompatible pointer type " in this line: data1->transformed_block[l] = &transformed_block[l]; - void print_message_function ( void *ptr ) { dt *data; data = (dt *) ptr; printf("Dentro da thread Numero0: %ld\n", data->L_norm_NewBlock); pthread_exit(0); } typedef struct data_thread { long L_norm_NewBlock; int Bsize_X; int Bsize_Y; int *transformed_block[MAX_LEVEL]; long L_norm_OrigBlock; } dt; void function() { int *transformed_block[MAX_LEVEL]; pthread_t thread1; dt *data1; pthread_attr_t attr; pthread_attr_init(&attr); //Fills structure data1 = (dt *) malloc(sizeof(dt)); data1->transformed_block[l] = &transformed_block[l]; data1->L_norm_NewBlock=0; data1->Bsize_Y = Bsize_Y; data1->Bsize_X = Bsize_X; pthread_create(&thread1, &attr, (void *) &print_message_function, (void *) &data1); } I want to get rid of that warning, and the values i get inside the thread are wrong. For example data1-L_norm_NewBlock=0; in the thread guives me a differente value (not 0 like it should be).

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[Wireless LAN]hostapd is giving error whwn running in target board

- by Renjith G

hi, I got the following error when i tried to run the hostapd command in my target board. Any idea about this? /etc # hostapd -dd hostapd.conf Configuration file: hostapd.conf madwifi_set_iface_flags: dev_up=0 madwifi_set_privacy: enabled=0 BSS count 1, BSSID mask ff:ff:ff:ff:ff:ff (0 bits) Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 3) Could not connect to kernel driver. Deauthenticate all stations madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=2 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 2) madwifi_set_privacy: enabled=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=1 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=2 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=3 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid '"RG_WLAN Testing Renjith G"' SSID - hexdump_ascii(len=27): 22 52 47 5f 57 4c 41 4e 20 54 65 73 74 69 6e 67 "RG_WLAN Testing 20 52 65 6e 6a 69 74 68 20 47 22 Renjith G" PSK (ASCII passphrase) - hexdump_ascii(len=12): 6d 79 70 61 73 73 70 68 72 61 73 65 mypassphrase PSK (from passphrase) - hexdump(len=32): 70 6f a6 92 da 9c a8 3b ff 36 85 76 f3 11 9c 5e 5d 4a 4b 79 f4 4e 18 f6 b1 b8 09 af 6c 9c 6c 21 madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x2 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA=0x1 WPA: group state machine entering state GTK_INIT (VLAN-ID 0) GMK - hexdump(len=32): [REMOVED] GTK - hexdump(len=32): [REMOVED] WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0) madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 madwifi_set_privacy: enabled=1 madwifi_set_iface_flags: dev_up=1 ath0: Setup of interface done. l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8b1a len=40 Register Fail Register Fail WPA: group state machine entering state SETKEYS (VLAN-ID 0) GMK - hexdump(len=32): [REMOVED] GTK - hexdump(len=32): [REMOVED] wpa_group_setkeys: GKeyDoneStations=0 WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0) madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=2 Signal 2 received - terminating Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 3) Could not connect to kernel driver. Deauthenticate all stations madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=2 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 2) madwifi_set_privacy: enabled=0 madwifi_set_ieee8021x: enabled=0 madwifi_set_iface_flags: dev_up=0

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Cannot run a VM with more than three network interfaces with KVM

- by Bostonvaulter

I'm running KVM on top of Ubuntu 10.10 Server I can create VM's (Virtual Machine) and network interfaces fine but I cannot seem to add more than three network interfaces. As soon as I have a VM with four network interfaces it gets stuck on startup at the starting SeaBIOS page with this message: Starting SeaBIOS (version pre-0.6.1-20100702_143500-palmer) So far I've verified this with two VM's, a Ubuntu 10.10 desktop and a Vyatta router. The specific network hardware I assign to the VM's doesn't seem to matter. I'm trying to have one bridged interface and three private networks using Vyatta to route between them. Does anyone know why I can't run a VM with more than three network interfaces? Edit: Additionally the KVM thread responsible for the specific VM hangs using ~100% CPU (i.e. one core). Here's the command for the process that is hanging: /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name vyatta -uuid 6dff7c94-6810-423e-5fea-fec10da0e9b7 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/vyatta.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -boot c -drive file=/home/rams/virtual-machines/vyatta.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:54:00:be:cc:4b,bus=pci.0,addr=0x3 -net tap,fd=97,vlan=0,name=hostnet0 -device rtl8139,vlan=1,id=net1,mac=52:54:00:da:59:ed,bus=pci.0,addr=0x5 -net tap,fd=98,vlan=1,name=hostnet1 -device rtl8139,vlan=2,id=net2,mac=52:54:00:ce:22:b6,bus=pci.0,addr=0x6 -net tap,fd=99,vlan=2,name=hostnet2 -device rtl8139,vlan=3,id=net3,mac=52:54:00:1e:bc:46,bus=pci.0,addr=0x7 -net tap,fd=101,vlan=3,name=hostnet3 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc 127.0.0.1:0 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 Edit: I've also found an error in dmesg that might be related (it also shows up when running virtd in verbose mode): 14:47:24.399: warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status '1', qemu probably failed I've also tried disabling app armor but that doesn't seem to make a difference.

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ssh refuses to authenticate keys

- by MixturaDementiae

So I am setting up a connection between my machine [fedora 17] and a virtual machine running in Virtual Box in which is running CentOS 5. I have installed openssh from the repositories on CentOS, and I have configured everything as it follows: Protocol 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key SyslogFacility AUTHPRIV PermitRootLogin yes RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile /home/pigreco/.ssh/authorized_keys PasswordAuthentication no ChallengeResponseAuthentication yes GSSAPIAuthentication yes GSSAPICleanupCredentials yes UsePAM yes AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE AcceptEnv XMODIFIERS X11Forwarding yes Subsystem sftp /usr/libexec/openssh/sftp-server this is the configuration file sshd_config on the server i.e. on the CentOS. Moreover I have created a public/private key pair as usual on the .ssh/ folder in my home directory in my OS, i.e. Fedora, and then I've copied with scp the id_rsa.pub to the server and then I have appended its content to the file .ssh/authorized_keys on the server machine. The error that I get is the following: OpenSSH_5.9p1, OpenSSL 1.0.0j-fips 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 50: Applying options for * debug1: Connecting to 192.168.100.13 [192.168.100.13] port 22. debug1: Connection established. debug1: identity file /home/mayhem/.ssh/identity type -1 debug1: identity file /home/mayhem/.ssh/identity-cert type -1 debug1: identity file /home/mayhem/.ssh/id_rsa type 1 debug1: identity file /home/mayhem/.ssh/id_rsa-cert type -1 debug1: identity file /home/mayhem/.ssh/id_dsa type -1 debug1: identity file /home/mayhem/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 16:e5:72:d1:37:94:1b:5e:3d:3a:e5:da:6f:df:0c:08 debug1: Host '192.168.100.13' is known and matches the RSA host key. debug1: Found key in /home/mayhem/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,keyboard-interactive debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/mayhem/.ssh/id_rsa debug1: Server accepts key: pkalg ssh-rsa blen 279 Agent admitted failure to sign using the key. debug1: Trying private key: /home/mayhem/.ssh/identity debug1: Trying private key: /home/mayhem/.ssh/id_dsa debug1: Next authentication method: keyboard-interactive Do you have some good suggestion of what I can do? thank you

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Ubuntu with KVM guest VM and broken bridges

- by MadPsy

I have an Ubuntu box with a KVM guest VM running. They use bridging so the guest VM attaches to the physical network of its host. The guest VM has 2 NICs in 2 different bridges. First NIC of the VM is tap5 and is in bridge br0 br0 8000.46720f5c572e no eth0.500 tap5 Second NIC of the VM is tap2 and is in bridge br100 br100 8000.76ad2fc96661 no eth0.100 eth0.101 eth0.103 eth0.104 eth0.105 tap2 On the host, br0 has an IP and br100 does not 21: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 46:72:0f:5c:57:2e brd ff:ff:ff:ff:ff:ff inet 192.168.100.4/24 brd 192.168.10.255 scope global br0 inet6 fe80::d6ae:52ff:febe:777/64 scope link valid_lft forever preferred_lft forever On the guest, its eth0 and eth1 interfaces both have IP addresses 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:3e:61:fb:7a:da brd ff:ff:ff:ff:ff:ff inet 192.168.100.6/24 brd 192.168.100.255 scope global eth0 inet6 fe80::23e:61ff:fefb:7ada/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:3e:61:fb:7a:ea brd ff:ff:ff:ff:ff:ff inet 172.16.50.129/25 brd 172.16.50.255 scope global eth1 inet6 fe80::23e:61ff:fefb:7aea/64 scope link valid_lft forever preferred_lft forever On the guest VM, a tcpdump of its eth1 interface (tap2) shows traffic from its eth0 interface (tap5), as if the 2 bridges are themselves bridged. This means any interface on br100 is now bridged across to br0 - which is completely broken. root@chillispot:~# tcpdump -c 1 -n -v -i eth1 net 192.168.100.0/24 tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes 16:31:24.175583 IP (tos 0x0, ttl 64, id 48054, offset 0, flags [DF], proto TCP (6), length 148) 192.168.100.6.22 > 192.168.100.4.59505: Flags [P.], cksum 0x6c2b (correct), seq 1056321648:1056321744, ack 398642983, win 1700, options [nop,nop,TS val 197473436 ecr 200655363], length 96 What could be bridging the 2 bridges, except the guest VM (which is a stock Ubuntu install)? I am at a complete loss! Thanks.

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Can't get my Raspberry Pi to keep a static IP

- by JonnyIrving

I recently got given a Raspberry Pi and I would like to be able to remote into it using puTTy from my laptop so I don't have to sit next to my tv with a keyboard and mouse to use it. I am able to get a puTTy session going when I know the IP address that my router has given the Pi on each session but it keeps changing on each reboot as I would expect. So I followed a number if instruction to go about configuring the RPi to keep a static IP address. This involved changing the file at '/etc/netwrok/interfaces' which now contains (password removed): auto lo iface lo inet loopback iface eth0 inet static address 192.168.1.82 netmask 255.255.255.0 gateway 192.168.1.254 auto wlan0 allow-hotplug wlan0 iface wlan0 inet dhcp wpa-ssid "BeBoxD304BF" wpa-psk "**********" Despite this however, each time I reboot my RPi it gives me a new dynamic IP address still. I also noticed that in the 'ifconfig' output below that the details of the eth0 doesn't contain IP details for inet addr, Bcast or Mask which have been present in all other examples I have seen online. eth0 Link encap:Ethernet HWaddr b8:27:eb:b5:95:da UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr 00:87:c6:00:33:77 inet addr:192.168.1.83 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:918 errors:0 dropped:0 overruns:0 frame:0 TX packets:277 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 Also I'm not sure if this is relevant but it can't hurt! The file at '/etc/resolv.conf' contains: domain config search config nameserver 192.168.1.254 ..I heard it might mean something on one of the pages I was looking at. I would be very grateful for any help with this. I have tried everything I can think of and would really like to get this working this weekend so I can use it from work.

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Secure, efficient, version-preserving, filename-hiding backup implemented in this way?

- by barrycarter

I tried writing a "perfect" backup program (below), but ran into problems (also below). Is there an efficient/working version of this?: Assumptions: you're backing up from 'local', which you own and has limited disk space to 'remote', which has infinite disk space and belongs to someone else, so you need encryption. Network bandwidth is finite. 'local' keeps a db of backed-up files w/ this data for each file: filename, including full path file's last modified time (mtime) sha1sum of file's unencrypted contents sha1sum of file's encrypted contents Given a list of files to backup (some perhaps already backed up), the program runs 'find' and gets the full path/mtime for each file (this is fairly efficient; conversely, computing the sha1sum of each file would NOT be efficient) The program discards files whose filename and mtime are in 'local' db. The program now computes the sha1sum of the (unencrypted contents of each remaining file. If the sha1sum matches one in 'local' db, we create a special entry in 'local' db that points this file/mtime to the file/mtime of the existing entry. Effectively, we're saying "we have a backup of this file's contents, but under another filename, so no need to back it up again". For each remaining file, we encrypt the file, take the sha1sum of the encrypted file's contents, rsync the file to its sha1sum. Example: if the file's encrypted sha1sum was da39a3ee5e6b4b0d3255bfef95601890afd80709, we'd rsync it to /some/path/da/39/a3/da39a3ee5e6b4b0d3255bfef95601890afd80709 on 'remote'. Once the step above succeeds, we add the file to the 'local' db. Note that we efficiently avoid computing sha1sums and encrypting unless absolutely necessary. Note: I don't specify encryption method: this would be user's choice. The problems: We must encrypt and backup 'local' db regularly. However, 'local' db grows quickly and rsync'ing encrypted files is inefficient, since a small change in 'local' db means a big change in the encrypted version of 'local' db. We create a file on 'remote' for each file on 'local', which is ugly and excessive. We query 'local' db frequently. Even w/ indexes, these queries are slow, since we're often making one query for each file. Would be nice to speed this up by batching queries or something. Probably other problems that I've now forgotten.

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Enterprise Library Logging / Exception handling and Postsharp

- by subodhnpushpak

One of my colleagues came-up with a unique situation where it was required to create log files based on the input file which is uploaded. For example if A.xml is uploaded, the corresponding log file should be A_log.txt. I am a strong believer that Logging / EH / caching are cross-cutting architecture aspects and should be least invasive to the business-logic written in enterprise application. I have been using Enterprise Library for logging / EH (i use to work with Avanade, so i have affection towards the library!! :D ). I have been also using excellent library called PostSharp for cross cutting aspect. Here i present a solution with and without PostSharp all in a unit test. Please see full source code at end of the this blog post. But first, we need to tweak the enterprise library so that the log files are created at runtime based on input given. Below is Custom trace listner which writes log into a given file extracted out of Logentry extendedProperties property. using Microsoft.Practices.EnterpriseLibrary.Common.Configuration; using Microsoft.Practices.EnterpriseLibrary.Logging.Configuration; using Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners; using Microsoft.Practices.EnterpriseLibrary.Logging; using System.IO; using System.Text; using System; using System.Diagnostics; namespace Subodh.Framework.Logging { [ConfigurationElementType(typeof(CustomTraceListenerData))] public class LogToFileTraceListener : CustomTraceListener { private static object syncRoot = new object(); public override void TraceData(TraceEventCache eventCache, string source, TraceEventType eventType, int id, object data) { if ((data is LogEntry) & this.Formatter != null) { WriteOutToLog(this.Formatter.Format((LogEntry)data), (LogEntry)data); } else { WriteOutToLog(data.ToString(), (LogEntry)data); } } public override void Write(string message) { Debug.Print(message.ToString()); } public override void WriteLine(string message) { Debug.Print(message.ToString()); } private void WriteOutToLog(string BodyText, LogEntry logentry) { try { //Get the filelocation from the extended properties if (logentry.ExtendedProperties.ContainsKey("filelocation")) { string fullPath = Path.GetFullPath(logentry.ExtendedProperties["filelocation"].ToString()); //Create the directory where the log file is written to if it does not exist. DirectoryInfo directoryInfo = new DirectoryInfo(Path.GetDirectoryName(fullPath)); if (directoryInfo.Exists == false) { directoryInfo.Create(); } //Lock the file to prevent another process from using this file //as data is being written to it. lock (syncRoot) { using (FileStream fs = new FileStream(fullPath, FileMode.Append, FileAccess.Write, FileShare.Write, 4096, true)) { using (StreamWriter sw = new StreamWriter(fs, Encoding.UTF8)) { Log(BodyText, sw); sw.Close(); } fs.Close(); } } } } catch (Exception ex) { throw new LoggingException(ex.Message, ex); } } /// <summary> /// Write message to named file /// </summary> public static void Log(string logMessage, TextWriter w) { w.WriteLine("{0}", logMessage); } } } The above can be “plugged into” the code using below configuration <loggingConfiguration name="Logging Application Block" tracingEnabled="true" defaultCategory="Trace" logWarningsWhenNoCategoriesMatch="true"> <listeners> <add listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.CustomTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" traceOutputOptions="None" filter="All" type="Subodh.Framework.Logging.LogToFileTraceListener, Subodh.Framework.Logging, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" name="Subodh Custom Trace Listener" initializeData="" formatter="Text Formatter" /> </listeners> Similarly we can use PostSharp to expose the above as cross cutting aspects as below using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Reflection; using PostSharp.Laos; using System.Diagnostics; using GC.FrameworkServices.ExceptionHandler; using Subodh.Framework.Logging; namespace Subodh.Framework.ExceptionHandling { [Serializable] public sealed class LogExceptionAttribute : OnExceptionAspect { private string prefix; private MethodFormatStrings formatStrings; // This field is not serialized. It is used only at compile time. [NonSerialized] private readonly Type exceptionType; private string fileName; /// <summary> /// Declares a <see cref="XTraceExceptionAttribute"/> custom attribute /// that logs every exception flowing out of the methods to which /// the custom attribute is applied. /// </summary> public LogExceptionAttribute() { } /// <summary> /// Declares a <see cref="XTraceExceptionAttribute"/> custom attribute /// that logs every exception derived from a given <see cref="Type"/> /// flowing out of the methods to which /// the custom attribute is applied. /// </summary> /// <param name="exceptionType"></param> public LogExceptionAttribute( Type exceptionType ) { this.exceptionType = exceptionType; } public LogExceptionAttribute(Type exceptionType, string fileName) { this.exceptionType = exceptionType; this.fileName = fileName; } /// <summary> /// Gets or sets the prefix string, printed before every trace message. /// </summary> /// <value> /// For instance <c>[Exception]</c>. /// </value> public string Prefix { get { return this.prefix; } set { this.prefix = value; } } /// <summary> /// Initializes the current object. Called at compile time by PostSharp. /// </summary> /// <param name="method">Method to which the current instance is /// associated.</param> public override void CompileTimeInitialize( MethodBase method ) { // We just initialize our fields. They will be serialized at compile-time // and deserialized at runtime. this.formatStrings = Formatter.GetMethodFormatStrings( method ); this.prefix = Formatter.NormalizePrefix( this.prefix ); } public override Type GetExceptionType( MethodBase method ) { return this.exceptionType; } /// <summary> /// Method executed when an exception occurs in the methods to which the current /// custom attribute has been applied. We just write a record to the tracing /// subsystem. /// </summary> /// <param name="context">Event arguments specifying which method /// is being called and with which parameters.</param> public override void OnException( MethodExecutionEventArgs context ) { string message = String.Format("{0}Exception {1} {{{2}}} in {{{3}}}. \r\n\r\nStack Trace {4}", this.prefix, context.Exception.GetType().Name, context.Exception.Message, this.formatStrings.Format(context.Instance, context.Method, context.GetReadOnlyArgumentArray()), context.Exception.StackTrace); if(!string.IsNullOrEmpty(fileName)) { ApplicationLogger.LogException(message, fileName); } else { ApplicationLogger.LogException(message, Source.UtilityService); } } } } To use the above below is the unit test [TestMethod] [ExpectedException(typeof(NotImplementedException))] public void TestMethod1() { MethodThrowingExceptionForLog(); try { MethodThrowingExceptionForLogWithPostSharp(); } catch (NotImplementedException ex) { throw ex; } } private void MethodThrowingExceptionForLog() { try { throw new NotImplementedException(); } catch (NotImplementedException ex) { // create file and then write log ApplicationLogger.TraceMessage("this is a trace message which will be logged in Test1MyFile", @"D:\EL\Test1Myfile.txt"); ApplicationLogger.TraceMessage("this is a trace message which will be logged in YetAnotherTest1Myfile", @"D:\EL\YetAnotherTest1Myfile.txt"); } } // Automatically log details using attributes // Log exception using attributes .... A La WCF [FaultContract(typeof(FaultMessage))] style] [Log(@"D:\EL\Test1MyfileLogPostsharp.txt")] [LogException(typeof(NotImplementedException), @"D:\EL\Test1MyfileExceptionPostsharp.txt")] private void MethodThrowingExceptionForLogWithPostSharp() { throw new NotImplementedException(); } The good thing about the approach is that all the logging and EH is done at centralized location controlled by PostSharp. Of Course, if some other library has to be used instead of EL, it can easily be plugged in. Also, the coder ARE ONLY involved in writing business code in methods, which makes code cleaner. Here is the full source code. The third party assemblies provided are from EL and PostSharp and i presume you will find these useful. Do let me know your thoughts / ideas on the same. Technorati Tags: PostSharp,Enterprize library,C#,Logging,Exception handling

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CodePlex Daily Summary for Monday, March 22, 2010

CodePlex Daily Summary for Monday, March 22, 2010New Projects[Tool] Vczh Non-public DLL Classes Caller: Generate C# code for you to call non-public classes in DLLs very easily.Artefact Animator: Artefact Animator provides an easy to use framework for procedural time-based animations in Silverlight and WPF.cacheroo: Cacheroo is a social networking community that will make it easier for people who love geocaching to get connected.Data Processing Toolkit: An utility app to collected data from different sources (i.e. bugzilla bug reports) in a structured way. We are currently setting up the site. Mo...eXternal SQL Bridge (PHP): The eXternal SQL Bridge (XSB) allows you to bridge two websites together in a secure manner through pre-shared keys. XSB is resilient against repla...'G' - Language to Define Gestures for Touch Based Applications: A cross plat form multi-touch application framework with a language to define gestures. The application is build on Silverlight 4.0 and the languag...IIS Network Diagnostic Tools: Web implementation of "looking glass" like services (ping, traceroute) as HTTP modules for Internet Information Services.Interop Router: This project establishes a communication framework and job dispatcher for a mixed operating system cluster environment.L2 Commander: L2Commander makes it easier for both new and old l2j users to manage your server.You no longer have to waste time on finding the files you need and...MediaHelper: A utility to help clean up empty/unwanted files and folders in your filesystem.mhinze: matt hinze stuffOneMan: Focus on Silverlight and WCF technology.Rss Photo Frame Android Widget: RSS Photo Frame Android Widget permits showing pictures from any RSS feed on your Android device's desktopSingle Web Session: Web Tool Kits Current project provide developer with different tools that help to enhance web site performance, security, and other common functio...Work Item Visualization: Use DGML to visualize and analyze your TFS Work Items. Included is the ability to perform basic risk/impact analysis. It helps answer the question,...New Releases[Tool] Vczh Non-public DLL Classes Caller: Wrapper Coder (beta): Click "<Click Me To Open Assembly File>", WrapperCoder will load the assembly and referenced assembly. Check the non-public classes that you want...APS - Automatic Print Screen: APS 1.0: APS automatizes the tasks of paste the image in Paint and save it after print screen or alt+print screen. Choose directory, name and file extension...BTP Tools: e-Sword generator build 20100321: 1. Modify the indent after subtitle. 2. Add 2 spaces after subtitle.Combres - WebForm & MVC Client-side Resource Combine Library: Combres 2.0: Changes since last version (1.2) Support ignore Combres pipeline in debug mode - see issue #6088 Debug mode generates comment helping identify in...Desafio Office 2010 Brasil: DesafioOutlook: Controlando um robo com o Outlook 2010dylan.NET: dylan.NET v. 9.4: Adding Platform Invocation Services Support, full Managed Pointer Support, Charset,Dllimport,Callconv setting for P/Invoke, MarshalAs for parametersFamily Tree Analyzer: Version 1.3.2.0: Version 1.3.2.0 Add open folder button to IGI Search Form Fixes to Fact Location processing - IGIName renamed to RegionID Fix if Region ID not fou...Fasterflect - A Fast and Simple Reflection API: Fasterflect 2.0: We are pleased to release version 2.0 of Fasterflect, which contains a lot of additions and improvements from the previous version. Please refer t...IIS Network Diagnostic Tools: 1.0: Initial public release.Informant: Informant (Desktop) v0.1: This release allows users to send sms messages to 1-Many Groups or 1-Many contacts. It is a very basic release of the application. No styling has b...InfoService: InfoService v1.5 - MPE1 Package: InfoService Release v1.5.0.65 Please read Plugin installation for installation instructions.InfoService: InfoService v1.5 - RAR Package: InfoService Release v1.5.0.65 Please read Plugin installation for installation instructions.L2 Commander: Source Code Link: Where to find our source.ModularCMS: ModularCMS 1.2: Minor bug fixes.NMTools: NMTools-v40b0-20100321-0: The most noticeable aspect of this release is that NMTools is now an independent project. It will no longer tied to OpenSLIM. Nevertheless, OpenSLI...SharePoint LogViewer: SharePoint LogViewer 1.5.3: Log loading performance enhanced. Search text box now has auto complete feature.Single Web Session: Single Web Session: !Single Web Session! <httpModules> <add name="SingleSession" type="SingleWebSession.Model.WebSessionModule, SingleWebSession"/> </httpModules>Sprite Sheet Packer: 2.1 Release: Made a few crucial fixes from 2.0: - Fixed error with paths having spaces. - Fixed error with UI not unlocking. - Fixed NullReferenceException on ...uManage - AD Self-Service Portal: uManage v1.1 (.NET 4.0 RC): Updated Releasev1.1 Adds the primary ability to setup and configure the application through a setup wizard. The setup wizard will continue to evol...VCC: Latest build, v2.1.30321.0: Automatic drop of latest buildVS ChessMania: VS ChessMania V2 March Beta: Second Beta Release with move correction and making application more safe for user. New features will be added soon.WatchersNET CKEditor™ Provider for DotNetNuke: CKEditor Provider 1.9.00: Whats New Added New Toolbar Plugin (By Kent Safransk) 'MediaEmbed' to Include Embed Media from Youtube, Vimeo, etc. Media Embed Plugin Added New ...WeatherBar: WeatherBar 1.0 [No Installation]: Extract the ZIP archive and run WeatherBar.exe. Current release contains some bugs that will be fixed in the next version. Check the Issue Tracker...Work Item Visualization: Release 1.0: This is the initial release of the Work Item Visualization tool. There are no known issues when it comes to the visualization aspects of the tool b...WPF Application Framework (WAF): WPF Application Framework (WAF) 1.0.0.10: Version: 1.0.0.10 (Milestone 10): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requi...WPF AutoComplete TextBox Control: Version 1.2: What's Newadds AutoAppend feature adds a new provider: UrlHistoryDataProvider sample application is updated to reflect the new things Bug Fixe...ZoomBarPlus: V2 (Beta): - Fixed bug: if the active window changed while you were in the middle of a single tap delay, long tap delay, or swipe-repeat, it would continue re...Most Popular ProjectsMetaSharpSavvy DateTimeRawrWBFS ManagerSilverlight ToolkitASP.NET Ajax LibraryMicrosoft SQL Server Product Samples: DatabaseAJAX Control ToolkitLiveUpload to FacebookWindows Presentation Foundation (WPF)Most Active ProjectsLINQ to TwitterRawrOData SDK for PHPjQuery Library for SharePoint Web ServicesDirectQPHPExcelFarseer Physics Enginepatterns & practices – Enterprise LibraryBlogEngine.NETNB_Store - Free DotNetNuke Ecommerce Catalog Module

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Too Many Kittens To Juggle At Once

- by Bil Simser

Ahh, the Internet. That crazy, mixed up place where one tweet turns into a conversation between dozens of people and spawns a blogpost. This is the direct result of such an event this morning. It started innocently enough, with this: Then followed up by a blog post by Joel here. In the post, Joel introduces us to the term Business Solutions Architect with mad skillz like InfoPath, Access Services, Excel Services, building Workflows, and SSRS report creation, all while meeting the business needs of users in a SharePoint environment. I somewhat disagreed with Joel that this really wasn’t a new role (at least IMHO) and that a good Architect or BA should really be doing this job. As Joel pointed out when you’re building a SharePoint team this kind of role is often overlooked. Engineers might be able to build workflows but is the right workflow for the right problem? Michael Pisarek wrote about a SharePoint Business Architect a few months ago and it’s a pretty solid assessment. Again, I argue you really shouldn’t be looking for roles that don’t exist and I don’t suggest anyone create roles to hire people to fill them. That’s basically creating a solution looking for problems. Michael’s article does have some great points if you’re lost in the quagmire of SharePoint duties though (and I especially like John Ross’ quote “The coolest shit is worthless if it doesn’t meet business needs”). SharePoinTony summed it up nicely with “SharePoint Solutions knowledge is both lacking and underrated in most environments. Roles help”. Having someone on the team who can dance between a business user and a coder can be difficult. Remember the idea of telling something to someone and them passing it on to the next person. By the time the story comes round the circle it’s a shadow of it’s former self with little resemblance to the original tale. This is very much business requirements as they’re told by the user to a business analyst, written down on paper, read by an architect, tuned into a solution plan, and implemented by a developer. Transformations between what was said, what was heard, what was written down, and what was developed can be distant cousins. Not everyone has the skill of communication and even less have negotiation skills to suit the SharePoint platform. Negotiation is important because not everything can be (or should be) done in SharePoint. Sometimes it’s just not appropriate to build it on the SharePoint platform but someone needs to know enough about the platform and what limitations it might have, then communicate that (and/or negotiate) with a customer or user so it’s not about “You can’t have this” to “Let’s try it this way”. Visualize the possible instead of denying the impossible. So what is the right SharePoint team? My cromag brain came with a fairly simpleton answer (and I’m sure people will just say this is a cop-out). The perfect SharePoint team is just enough people to do the job that know the technology and business problem they’re solving. Bridge the gap between business need and technology platform and you have an architect. Communicate the needs of the business effectively so the entire team understands it and you have a business analyst. Can you get this with full time workers? Maybe but don’t expect miracles out of the gate. Also don’t take a consultant’s word as gospel. Some consultants just don’t have the diversity of the SharePoint platform to be worth their value so be careful. You really need someone who knows enough about SharePoint to be able to validate a consultants knowledge level. This is basically try for any consultant, not just a SharePoint one. Specialization is good and needed. A good, well-balanced SharePoint team is one of people that can solve problems with work with the technology, not against it. Having a top developer is great, but don’t rely on them to solve world hunger if they can’t communicate very well with users. An expert business analyst might be great at gathering requirements so the entire team can understand them, but if it means building 100% custom solutions because they don’t fit inside the SharePoint boundaries isn’t of much value. Just repeat. There is no silver bullet. There is no silver bullet. There is no silver bullet. A few people pointed out Nick Inglis’ article Excluding The Information Professional In SharePoint. It’s a good read too and hits home that maybe some developers and IT pros need some extra help in the information space. If you’re in an organization that needs labels on people, come up with something everyone understands and go with it. If that’s Business Solutions Architect, SharePoint Advisor, or Guy Who Knows A Lot About Portals, make it work for you. We all wish that one person could master all that is SharePoint but we also know that doesn’t scale very well and you quickly get into the hit-by-a-bus syndrome (with the organization coming to a full crawl when the guy or girl goes on vacation, gets sick, or pops out a baby). There are too many gaps in SharePoint knowledge to have any one person know it all and too many kittens to juggle all at once. We like to consider ourselves experts in our field, but trying to tackle too many roles at once and we end up being mediocre jack of all trades, master of none. Don't fall into this pit. It's a deep, dark hole you don't want to try to claw your way out of. Trust me. Been there. Done that. Got the t-shirt. In the end I don’t disagree with Joel. SharePoint is a beast and not something that should be taken on by newbies. If you just read “Teach Yourself SharePoint in 24 Hours” and want to go build your corporate intranet or the next killer business solution with all your new found knowledge plan to pony up consultant dollars a few months later when everything goes to Hell in a handbasket and falls over. I’m not saying don’t build solutions in SharePoint. I’m just saying that building effective ones takes skill like any craft and not something you can just cobble together with a little bit of cursory knowledge. Thanks to *everyone* who participated in this tweet rush. It was fun and educational.

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A Good Developer is So Hard to Find

- by James Michael Hare

Let me start out by saying I want to damn the writers of the Toughest Developer Puzzle Ever – 2. It is eating every last shred of my free time! But as I've been churning through each puzzle and marvelling at the brain teasers and trivia within, I began to think about interviewing developers and why it seems to be so hard to find good ones. The problem is, it seems like no matter how hard we try to find the perfect way to separate the chaff from the wheat, inevitably someone will get hired who falls far short of expectations or someone will get passed over for missing a piece of trivia or a tricky brain teaser that could have been an excellent team member. In shops that are primarily software-producing businesses or other heavily IT-oriented businesses (Microsoft, Amazon, etc) there often exists a much tighter bond between HR and the hiring development staff because development is their life-blood. Unfortunately, many of us work in places where IT is viewed as a cost or just a means to an end. In these shops, too often, HR and development staff may work against each other due to differences in opinion as to what a good developer is or what one is worth. It seems that if you ask two different people what makes a good developer, often you will get three different opinions. With the exception of those shops that are purely development-centric (you guys have it much easier!), most other shops have management who have very little knowledge about the development process. Their view can often be that development is simply a skill that one learns and then once aquired, that developer can produce widgets as good as the next like workers on an assembly-line floor. On the other side, you have many developers that feel that software development is an art unto itself and that the ability to create the most pure design or know the most obscure of keywords or write the shortest-possible obfuscated piece of code is a good coder. So is it a skill? An Art? Or something entirely in between? Saying that software is merely a skill and one just needs to learn the syntax and tools would be akin to saying anyone who knows English and can use Word can write a 300 page book that is accurate, meaningful, and stays true to the point. This just isn't so. It takes more than mere skill to take words and form a sentence, join those sentences into paragraphs, and those paragraphs into a document. I've interviewed candidates who could answer obscure syntax and keyword questions and once they were hired could not code effectively at all. So development must be more than a skill. But on the other end, we have art. Is development an art? Is our end result to produce art? I can marvel at a piece of code -- see it as concise and beautiful -- and yet that code most perform some stated function with accuracy and efficiency and maintainability. None of these three things have anything to do with art, per se. Art is beauty for its own sake and is a wonderful thing. But if you apply that same though to development it just doesn't hold. I've had developers tell me that all that matters is the end result and how you code it is entirely part of the art and I couldn't disagree more. Yes, the end result, the accuracy, is the prime criteria to be met. But if code is not maintainable and efficient, it would be just as useless as a beautiful car that breaks down once a week or that gets 2 miles to the gallon. Yes, it may work in that it moves you from point A to point B and is pretty as hell, but if it can't be maintained or is not efficient, it's not a good solution. So development must be something less than art. In the end, I think I feel like development is a matter of craftsmanship. We use our tools and we use our skills and set about to construct something that satisfies a purpose and yet is also elegant and efficient. There is skill involved, and there is an art, but really it boils down to being able to craft code. Crafting code is far more than writing code. Anyone can write code if they know the syntax, but so few people can actually craft code that solves a purpose and craft it well. So this is what I want to find, I want to find code craftsman! But how? I used to ask coding-trivia questions a long time ago and many people still fall back on this. The thought is that if you ask the candidate some piece of coding trivia and they know the answer it must follow that they can craft good code. For example: What C++ keyword can be applied to a class/struct field to allow it to be changed even from a const-instance of that class/struct? (answer: mutable) So what do we prove if a candidate can answer this? Only that they know what mutable means. One would hope that this would infer that they'd know how to use it, and more importantly when and if it should ever be used! But it rarely does! The problem with triva questions is that you will either: Approve a really good developer who knows what some obscure keyword is (good) Reject a really good developer who never needed to use that keyword or is too inexperienced to know how to use it (bad) Approve a really bad developer who googled "C++ Interview Questions" and studied like hell but can't craft (very bad) Many HR departments love these kind of tests because they are short and easy to defend if a legal issue arrises on hiring decisions. After all it's easy to say a person wasn't hired because they scored 30 out of 100 on some trivia test. But unfortunately, you've eliminated a large part of your potential developer pool and possibly hired a few duds. There are times I've hired candidates who knew every trivia question I could throw out them and couldn't craft. And then there are times I've interviewed candidates who failed all my trivia but who I took a chance on who were my best finds ever. So if not trivia, then what? Brain teasers? The thought is, these type of questions measure the thinking power of a candidate. The problem is, once again, you will either: Approve a good candidate who has never heard the problem and can solve it (good) Reject a good candidate who just happens not to see the "catch" because they're nervous or it may be really obscure (bad) Approve a candidate who has studied enough interview brain teasers (once again, you can google em) to recognize the "catch" or knows the answer already (bad). Once again, you're eliminating good candidates and possibly accepting bad candidates. In these cases, I think testing someone with brain teasers only tests their ability to answer brain teasers, not the ability to craft code. So how do we measure someone's ability to craft code? Here's a novel idea: have them code! Give them a computer and a compiler, or a whiteboard and a pen, or paper and pencil and have them construct a piece of code. It just makes sense that if we're going to hire someone to code we should actually watch them code. When they're done, we can judge them on several criteria: Correctness - does the candidate's solution accurately solve the problem proposed? Accuracy - is the candidate's solution reasonably syntactically correct? Efficiency - did the candidate write or use the more efficient data structures or algorithms for the job? Maintainability - was the candidate's code free of obfuscation and clever tricks that diminish readability? Persona - are they eager and willing or aloof and egotistical? Will they work well within your team? It may sound simple, or it may sound crazy, but when I'm looking to hire a developer, I want to see them actually develop well-crafted code.

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DRY and SRP

- by Timothy Klenke

Originally posted on: http://geekswithblogs.net/TimothyK/archive/2014/06/11/dry-and-srp.aspxKent Beck’s XP Simplicity Rules (aka Four Rules of Simple Design) are a prioritized list of rules that when applied to your code generally yield a great design. As you’ll see from the above link the list has slightly evolved over time. I find today they are usually listed as: All Tests Pass Don’t Repeat Yourself (DRY) Express Intent Minimalistic These are prioritized. If your code doesn’t work (rule 1) then everything else is forfeit. Go back to rule one and get the code working before worrying about anything else. Over the years the community have debated whether the priority of rules 2 and 3 should be reversed. Some say a little duplication in the code is OK as long as it helps express intent. I’ve debated it myself. This recent post got me thinking about this again, hence this post. I don’t think it is fair to compare “Expressing Intent” against “DRY”. This is a comparison of apples to oranges. “Expressing Intent” is a principal of code quality. “Repeating Yourself” is a code smell. A code smell is merely an indicator that there might be something wrong with the code. It takes further investigation to determine if a violation of an underlying principal of code quality has actually occurred. For example “using nouns for method names”, “using verbs for property names”, or “using Booleans for parameters” are all code smells that indicate that code probably isn’t doing a good job at expressing intent. They are usually very good indicators. But what principle is the code smell of Duplication pointing to and how good of an indicator is it? Duplication in the code base is bad for a couple reasons. If you need to make a change and that needs to be made in a number of locations it is difficult to know if you have caught all of them. This can lead to bugs if/when one of those locations is overlooked. By refactoring the code to remove all duplication there will be left with only one place to change, thereby eliminating this problem. With most projects the code becomes the single source of truth for a project. If a production code base is inconsistent with a five year old requirements or design document the production code that people are currently living with is usually declared as the current reality (or truth). Requirement or design documents at this age in a project life cycle are usually of little value. Although comparing production code to external documentation is usually straight forward, duplication within the code base muddles this declaration of truth. When code is duplicated small discrepancies will creep in between the two copies over time. The question then becomes which copy is correct? As different factions debate how the software should work, trust in the software and the team behind it erodes. The code smell of Duplication points to a violation of the “Single Source of Truth” principle. Let me define that as: A stakeholder’s requirement for a software change should never cause more than one class to change. Violation of the Single Source of Truth principle will always result in duplication in the code. However, the inverse is not always true. Duplication in the code does not necessarily indicate that there is a violation of the Single Source of Truth principle. To illustrate this, let’s look at a retail system where the system will (1) send a transaction to a bank and (2) print a receipt for the customer. Although these are two separate features of the system, they are closely related. The reason for printing the receipt is usually to provide an audit trail back to the bank transaction. Both features use the same data: amount charged, account number, transaction date, customer name, retail store name, and etcetera. Because both features use much of the same data, there is likely to be a lot of duplication between them. This duplication can be removed by making both features use the same data access layer. Then start coming the divergent requirements. The receipt stakeholder wants a change so that the account number has the last few digits masked out to protect the customer’s privacy. That can be solve with a small IF statement whilst still eliminating all duplication in the system. Then the bank wants to take a picture of the customer as well as capture their signature and/or PIN number for enhanced security. Then the receipt owner wants to pull data from a completely different system to report the customer’s loyalty program point total. After a while you realize that the two stakeholders have somewhat similar, but ultimately different responsibilities. They have their own reasons for pulling the data access layer in different directions. Then it dawns on you, the Single Responsibility Principle: There should never be more than one reason for a class to change. In this example we have two stakeholders giving two separate reasons for the data access class to change. It is clear violation of the Single Responsibility Principle. That’s a problem because it can often lead the project owner pitting the two stakeholders against each other in a vein attempt to get them to work out a mutual single source of truth. But that doesn’t exist. There are two completely valid truths that the developers need to support. How is this to be supported and honour the Single Responsibility Principle? The solution is to duplicate the data access layer and let each stakeholder control their own copy. The Single Source of Truth and Single Responsibility Principles are very closely related. SST tells you when to remove duplication; SRP tells you when to introduce it. They may seem to be fighting each other, but really they are not. The key is to clearly identify the different responsibilities (or sources of truth) over a system. Sometimes there is a single person with that responsibility, other times there are many. This can be especially difficult if the same person has dual responsibilities. They might not even realize they are wearing multiple hats. In my opinion Single Source of Truth should be listed as the second rule of simple design with Express Intent at number three. Investigation of the DRY code smell should yield to the proper application SST, without violating SRP. When necessary leave duplication in the system and let the class names express the different people that are responsible for controlling them. Knowing all the people with responsibilities over a system is the higher priority because you’ll need to know this before you can express it. Although it may be a code smell when there is duplication in the code, it does not necessarily mean that the coder has chosen to be expressive over DRY or that the code is bad.

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Your thoughts on Best Practices for Scientific Computing?

- by John Smith

A recent paper by Wilson et al (2014) pointed out 24 Best Practices for scientific programming. It's worth to have a look. I would like to hear opinions about these points from experienced programmers in scientific data analysis. Do you think these advices are helpful and practical? Or are they good only in an ideal world? Wilson G, Aruliah DA, Brown CT, Chue Hong NP, Davis M, Guy RT, Haddock SHD, Huff KD, Mitchell IM, Plumbley MD, Waugh B, White EP, Wilson P (2014) Best Practices for Scientific Computing. PLoS Biol 12:e1001745. http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1001745 Box 1. Summary of Best Practices Write programs for people, not computers. (a) A program should not require its readers to hold more than a handful of facts in memory at once. (b) Make names consistent, distinctive, and meaningful. (c) Make code style and formatting consistent. Let the computer do the work. (a) Make the computer repeat tasks. (b) Save recent commands in a file for re-use. (c) Use a build tool to automate workflows. Make incremental changes. (a) Work in small steps with frequent feedback and course correction. (b) Use a version control system. (c) Put everything that has been created manually in version control. Don’t repeat yourself (or others). (a) Every piece of data must have a single authoritative representation in the system. (b) Modularize code rather than copying and pasting. (c) Re-use code instead of rewriting it. Plan for mistakes. (a) Add assertions to programs to check their operation. (b) Use an off-the-shelf unit testing library. (c) Turn bugs into test cases. (d) Use a symbolic debugger. Optimize software only after it works correctly. (a) Use a profiler to identify bottlenecks. (b) Write code in the highest-level language possible. Document design and purpose, not mechanics. (a) Document interfaces and reasons, not implementations. (b) Refactor code in preference to explaining how it works. (c) Embed the documentation for a piece of software in that software. Collaborate. (a) Use pre-merge code reviews. (b) Use pair programming when bringing someone new up to speed and when tackling particularly tricky problems. (c) Use an issue tracking tool. I'm relatively new to serious programming for scientific data analysis. When I tried to write code for pilot analyses of some of my data last year, I encountered tremendous amount of bugs both in my code and data. Bugs and errors had been around me all the time, but this time it was somewhat overwhelming. I managed to crunch the numbers at last, but I thought I couldn't put up with this mess any longer. Some actions must be taken. Without a sophisticated guide like the article above, I started to adopt "defensive style" of programming since then. A book titled "The Art of Readable Code" helped me a lot. I deployed meticulous input validations or assertions for every function, renamed a lot of variables and functions for better readability, and extracted many subroutines as reusable functions. Recently, I introduced Git and SourceTree for version control. At the moment, because my co-workers are much more reluctant about these issues, the collaboration practices (8a,b,c) have not been introduced. Actually, as the authors admitted, because all of these practices take some amount of time and effort to introduce, it may be generally hard to persuade your reluctant collaborators to comply them. I think I'm asking your opinions because I still suffer from many bugs despite all my effort on many of these practices. Bug fix may be, or should be, faster than before, but I couldn't really measure the improvement. Moreover, much of my time has been invested on defence, meaning that I haven't actually done much data analysis (offence) these days. Where is the point I should stop at in terms of productivity? I've already deployed: 1a,b,c, 2a, 3a,b,c, 4b,c, 5a,d, 6a,b, 7a,7b I'm about to have a go at: 5b,c Not yet: 2b,c, 4a, 7c, 8a,b,c (I could not really see the advantage of using GNU make (2c) for my purpose. Could anyone tell me how it helps my work with MATLAB?)

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Trabajando el redireccionamiento de usuarios/Working with user redirect methods

- by Jason Ulloa

La protección de las aplicaciones es un elemento que no se puede dejar por fuera cuando se elabora un sistema. Cada parte o elemento de código que protege nuetra aplicación debe ser cuidadosamente seleccionado y elaborado. Una de las cosas comunes con las que nos topamos en asp.net cuando deseamos trabajar con usuarios, es con la necesidad de poder redireccionarlos a los distintos elementos o páginas dependiendo del rol. Pues precisamente eso es lo que haremos, vamos a trabajar con el Web.config de nuestra aplicación y le añadiremos unas pequeñas líneas de código para lograr dar un poco mas de seguridad al sistema y sobre todo lograr el redireccionamiento. Así que veamos como logramos lo deseado: Como bien sabemos el web.config nos permite manejar muchos elementos dentro de asp.net, muchos de ellos relacionados con la seguridad, asi como tambien nos brinda la posibilidad de poder personalizar los elementos para poder adaptarlo a nuestras necesidades. Así que, basandonos en el principio de que podemos personalizar el web.config, entonces crearemos una sección personalizada, que será la que utilicemos para manejar el redireccionamiento: Nuestro primer paso será ir a nuestro web.config y buscamos las siguientes líneas: <configuration> <configSections> </sectionGroup> </sectionGroup> </sectionGroup> Y luego de ellas definiremos una nueva sección <section name="loginRedirectByRole" type="crabit.LoginRedirectByRoleSection" allowLocation="true" allowDefinition="Everywhere" /> El section name corresponde al nombre de nuestra nueva sección Type corresponde al nombre de la clase (que pronto realizaremos) y que será la encargada del Redirect Como estamos trabajando dentro de la seccion de configuración una vez definidad nuestra sección personalizada debemos cerrar esta sección </configSections> Por lo que nuestro web.config debería lucir de la siguiente forma <configuration> <configSections> </sectionGroup> </sectionGroup> </sectionGroup> <section name="loginRedirectByRole" type="crabit.LoginRedirectByRoleSection" allowLocation="true" allowDefinition="Everywhere" /> </configSections> Anteriormente definimos nuestra sección, pero esta sería totalmente inútil sin el Metodo que le da vida. En nuestro caso el metodo loginRedirectByRole, este metodo lo definiremos luego del </configSections> último que cerramos: <loginRedirectByRole> <roleRedirects> <add role="Administrador" url="~/Admin/Default.aspx" /> <add role="User" url="~/User/Default.aspx" /> </roleRedirects> </loginRedirectByRole> Como vemos, dentro de nuestro metodo LoginRedirectByRole tenemos el elemento add role. Este elemento será el que posteriormente le indicará a la aplicación hacia donde irá el usuario cuando realice un login correcto. Así que, veamos un poco esta configuración: add role="Administrador" corresponde al nombre del Role que tenemos definidio, pueden existir tantos elementos add role como tengamos definidos en nuestra aplicación. El elemento URL indica la ruta o página a la que será dirigido un usuario una vez logueado y dentro de la aplicación. Como vemos estamos utilizando el ~ para indicar que es una ruta relativa. Con esto hemos terminado la configuración de nuestro web.config, ahora veamos a fondo el código que se encargará de leer estos elementos y de utilziarlos: Para nuestro ejemplo, crearemos una nueva clase denominada LoginRedirectByRoleSection, recordemos que esta clase es la que llamamos en el elemento TYPE definido en la sección de nuestro web.config. Una vez creada la clase, definiremos algunas propiedades, pero antes de ello le indicaremos a nuestra clase que debe heredar de configurationSection, esto para poder obtener los elementos del web.config. Inherits ConfigurationSection Ahora nuestra primer propiedad <ConfigurationProperty("roleRedirects")> _ Public Property RoleRedirects() As RoleRedirectCollection Get Return DirectCast(Me("roleRedirects"), RoleRedirectCollection) End Get Set(ByVal value As RoleRedirectCollection) Me("roleRedirects") = value End Set End Property End Class Esta propiedad será la encargada de obtener todos los roles que definimos en la metodo personalizado de nuestro web.config Nuestro segundo paso será crear una segunda clase (en la misma clase LoginRedirectByRoleSection) a esta clase la llamaremos RoleRedirectCollection y la heredaremos de ConfigurationElementCollection y definiremos lo siguiente Public Class RoleRedirectCollection Inherits ConfigurationElementCollection Default Public ReadOnly Property Item(ByVal index As Integer) As RoleRedirect Get Return DirectCast(BaseGet(index), RoleRedirect) End Get End Property Default Public ReadOnly Property Item(ByVal key As Object) As RoleRedirect Get Return DirectCast(BaseGet(key), RoleRedirect) End Get End Property Protected Overrides Function CreateNewElement() As ConfigurationElement Return New RoleRedirect() End Function Protected Overrides Function GetElementKey(ByVal element As ConfigurationElement) As Object Return DirectCast(element, RoleRedirect).Role End Function End Class Nuevamente crearemos otra clase esta vez llamada RoleRedirect y en este caso la heredaremos de ConfigurationElement. Nuestra nueva clase debería lucir así: Public Class RoleRedirect Inherits ConfigurationElement <ConfigurationProperty("role", IsRequired:=True)> _ Public Property Role() As String Get Return DirectCast(Me("role"), String) End Get Set(ByVal value As String) Me("role") = value End Set End Property <ConfigurationProperty("url", IsRequired:=True)> _ Public Property Url() As String Get Return DirectCast(Me("url"), String) End Get Set(ByVal value As String) Me("url") = value End Set End Property End Class Una vez que nuestra clase madre esta lista, lo unico que nos queda es un poc de codigo en la pagina de login de nuestro sistema (por supuesto, asumo que estan utilizando los controles de login que por defecto tiene asp.net). Acá definiremos nuestros dos últimos metodos Protected Sub ctllogin_LoggedIn(ByVal sender As Object, ByVal e As System.EventArgs) Handles ctllogin.LoggedIn RedirectLogin(ctllogin.UserName) End Sub El procedimiento loggeding es parte del control login de asp.net y se desencadena en el momento en que el usuario hace loguin correctametne en nuestra aplicación Este evento desencadenará el siguiente procedimiento para redireccionar. Private Sub RedirectLogin(ByVal username As String) Dim roleRedirectSection As crabit.LoginRedirectByRoleSection = DirectCast(ConfigurationManager.GetSection("loginRedirectByRole"), crabit.LoginRedirectByRoleSection) For Each roleRedirect As crabit.RoleRedirect In roleRedirectSection.RoleRedirects If Roles.IsUserInRole(username, roleRedirect.Role) Then Response.Redirect(roleRedirect.Url) End If Next End Sub Con esto, nuestra aplicación debería ser capaz de redireccionar sin problemas y manejar los roles. Además, tambien recordar que nuestro ejemplo se basa en la utilización del esquema de bases de datos que por defecto nos proporcionada asp.net.

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Tutorial: Criando um Componente para o UCM

- by Denisd

Então você já instalou o UCM, seguindo o tutorial: http://blogs.oracle.com/ecmbrasil/2009/05/tutorial_de_instalao_do_ucm.html e também já fez o hands-on: http://blogs.oracle.com/ecmbrasil/2009/10/tutorial_de_ucm.html e agora quer ir além do básico? Quer começar a criar funcionalidades para o UCM? Quer se tornar um desenvolvedor do UCM? Quer criar o Content Server à sua imagem e semelhança?! Pois hoje é o seu dia de sorte! Neste tutorial, iremos aprender a criar um componente para o Content Server. O nosso primeiro componente, embora não seja tão simples, será feito apenas com recursos do Content Server. Em um futuro tutorial, iremos aprender a usar classes java como parte de nossos componentes. Neste tutorial, vamos desenvolver um recurso de Favoritos, aonde os usuários poderão marcar determinados documentos como seus Favoritos, e depois consultar estes documentos em uma lista. Não iremos montar o componente com todas as suas funcionalidades, mas com o que vocês verão aqui, será tranquilo aprimorar este componente, inclusive para ambientes de produção. Componente MyFavorites Algumas características do nosso componente favoritos: - Por motivos de espaço, iremos montar este componente de uma forma “rápida e crua”, ou seja, sem seguir necessariamente as melhores práticas de desenvolvimento de componentes. Para entender melhor a prática de desenvolvimento de componentes, recomendo a leitura do guia Working With Components. - Ele será desenvolvido apenas para português-Brasil. Outros idiomas podem ser adicionados posteriormente. - Ele irá apresentar uma opção “Adicionar aos Favoritos” no menu “Content Actions” (tela Content Information), para que o usuário possa definir este arquivo como um dos seus favoritos. - Ao clicar neste link, o usuário será direcionado à uma tela aonde ele poderá digitar um comentário sobre este favorito, para facilitar a leitura depois. - Os favoritos ficarão salvos em uma tabela de banco de dados que iremos criar como parte do componente - A aba “My Content Server” terá uma opção nova chamada “Meus Favoritos”, que irá trazer uma tela que lista os favoritos, permitindo que o usuário possa deletar os links - Alguns recursos ficarão de fora deste exercício, novamente por motivos de espaço. Mas iremos listar estes recursos ao final, como exercícios complementares. Recursos do nosso Componente O componente Favoritos será desenvolvido com alguns recursos. Vamos conhecer melhor o que são estes recursos e quais são as suas funções: - Query: Uma query é qualquer atividade que eu preciso executar no banco, o famoso CRUD: Criar, Ler, Atualizar, Deletar. Existem diferentes jeitos de chamar a query, dependendo do propósito: Select Query: executa um comando SQL, mas descarta o resultado. Usado apenas para testar se a conexão com o banco está ok. Não será usado no nosso exercício. Execute Query: executa um comando SQL que altera informações do banco. Pode ser um INSERT, UPDATE ou DELETE. Descarta os resultados. Iremos usar Execute Query para criar, alterar e excluir os favoritos. Select Cache Query: executa um comando SQL SELECT e armazena os resultados em um ResultSet. Este ResultSet retorna como resultado do serviço e pode ser manipulado em IDOC, Java ou outras linguagens. Iremos utilizar Select Cache Query para retornar a lista de favoritos de um usuário. - Service: Os serviços são os responsáveis por executar as queries (ou classes java, mas isso é papo para um outro tutorial...). O serviço recebe os parâmetros de entrada, executa a query e retorna o ResultSet (no caso de um SELECT). Os serviços podem ser executados através de templates, páginas IDOC, outras aplicações (através de API), ou diretamente na URL do browser. Neste exercício criaremos serviços para Criar, Editar, Deletar e Listar os favoritos de um usuário. - Template: Os templates são as interfaces gráficas (páginas) que serão apresentadas aos usuários. Por exemplo, antes de executar o serviço que deleta um documento do favoritos, quero que o usuário veja uma tela com o ID do Documento e um botão Confirma, para que ele tenha certeza que está deletando o registro correto. Esta tela pode ser criada como um template. Neste exercício iremos construir templates para os principais serviços, além da página que lista todos os favoritos do usuário e apresenta as ações de editar e deletar. Os templates nada mais são do que páginas HTML com scripts IDOC. A nossa sequência de atividades para o desenvolvimento deste componente será: - Criar a Tabela do banco - Criar o componente usando o Component Wizard - Criar as Queries para inserir, editar, deletar e listar os favoritos - Criar os Serviços que executam estas Queries - Criar os templates, que são as páginas que irão interagir com os usuários - Criar os links, na página de informações do conteúdo e no painel My Content Server Pois bem, vamos começar! Confira este tutorial na íntegra clicando neste link: http://blogs.oracle.com/ecmbrasil/Tutorial_Componente_Banco.pdf Happy coding! :-)

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DBCC CHECKDB (BatmanDb, REPAIR_ALLOW_DATA_LOSS) – Are you Feeling Lucky?

- by David Totzke

I’m currently working for a client on a PowerBuilder to WPF migration. It’s one of those “I could tell you, but I’d have to kill you” kind of clients and the quick-lime pits are currently occupied by the EMC tech…but I’ve said too much already. At approximately 3 or 4 pm that day users of the Batman[1] application here in Gotham[1] started to experience problems accessing the application. Batman[2] is a document management system here that also integrates with the ERP system. Very little goes on here that doesn’t involve Batman in some way. The errors being received seemed to point to network issues (TCP protocol error, connection forcibly closed by the remote host etc…) but the real issue was much more insidious. Connecting to the database via SSMS and performing selects on certain tables underlying the application areas that were having problems started to reveal the issue. You couldn’t do a SELECT * FROM MyTable without it bombing and giving the same error noted above. A run of DBCC CHECKDB revealed 14 tables with corruption. One of the tables with issues was the Document table. Pretty central to a “document management” system. Information was obtained from IT that a single drive in the SAN went bad in the night. A new drive was in place and was working fine. The partition that held the Batman database is configured for RAID Level 5 so a single drive failure shouldn’t have caused any trouble and yet, the database is corrupted. They do hourly incremental backups here so the first thing done was to try a restore. A restore of the most recent backup failed so they worked backwards until they hit a good point. This successful restore was for a backup at 3AM – a full day behind. This time also roughly corresponds with the time the SAN started to report the drive failure. The plot thickens… I got my hands on the output from DBCC CHECKDB and noticed a pattern. What’s sad is that nobody that should have noticed the pattern in the DBCC output did notice. There was a rush to do things to try and recover the data before anybody really understood what was wrong with it in the first place. Cooler heads must prevail in these circumstances and some investigation should be done and a plan of action laid out or you could end up making things worse[3]. DBCC CHECKDB also told us that: repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB Yikes. That means that the database is so messed up that you’re definitely going to lose some stuff when you repair it to get it back to a consistent state. All the more reason to do a little more investigation into the problem. Rescuing this database is preferable to having to export all of the data possible from this database into a new one. This is a fifteen year old application with about seven hundred tables. There are TRIGGERS everywhere not to mention the referential integrity constraints to deal with. Only fourteen of the tables have an issue. We have a good backup that is missing the last 24 hours of business which means we could have a “do-over” of yesterday but that’s not a very palatable option either. All of the affected tables had TEXT columns and all of the errors were about LOB data types and orphaned off-row data which basically means TEXT, IMAGE or NTEXT columns. If we did a SELECT on an affected table and excluded those columns, we got all of the rows. We exported that data into a separate database. Things are looking up. Working on a copy of the production database we then ran DBCC CHECKDB with REPAIR_ALLOW_DATA_LOSS and that “fixed” everything up. The allow data loss option will delete the bad rows. This isn’t too horrible as we have all of those rows minus the text fields from out earlier export. Now I could LEFT JOIN to the exported data to find the missing rows and INSERT them minus the TEXT column data. We had the restored data from the good 3AM backup that we could now JOIN to and, with fingers crossed, recover the missing TEXT column information. We got lucky in that all of the affected rows were old and in the end we didn’t lose anything. :O All of the row counts along the way worked out and it looks like we dodged a major bullet here. We’ve heard back from EMC and it turns out the SAN firmware that they were running here is apparently buggy. This thing is only a couple of months old. Grrr…. They dispatched a technician that night to come and update it . That explains why RAID didn’t save us. All-in-all this could have been a lot worse. Given the root cause here, they basically won the lottery in not losing anything. Here are a few links to some helpful posts on the SQL Server Engine blog. I love the title of the first one: Which part of 'REPAIR_ALLOW_DATA_LOSS' isn't clear? CHECKDB (Part 8): Can repair fix everything? (in fact, read the whole series) Ta da! Emergency mode repair (we didn’t have to resort to this one thank goodness) Dave Just because I can… [1] Names have been changed to protect the guilty. [2] I'm Batman. [3] And if I'm the coolest head in the room, you've got even bigger problems...

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Unable to set nginx to serve my staging website

- by user100778

I'm having some troubles setting up nginx to serve my staging website. What I did is change the server_name but for some reasons it just doesn't work. The url scheme is "domain.foo" is production, "staging.domain.foo" is staging, "foobar.domain.foo" is a web service, "foobar.staging.domain.foo" is the staging version of the same webserver, ".domain.foo" is routed to serve some s3 static HTML, ".staging.domain.foo" is routed to serve some s3 static HTML in another bucket. All production urls work and are correctly configured, all staging urls doesn't work. Here is my conf file. You will see some duplication, I will gladly accept any correction/optimization, I'm a coder and configuring servers is definitely not my thing (but I'm eager to learn and improve...). server { listen 80; ## listen for ipv4 server_name "domain.foo" "www.domain.foo" default_server; access_log /var/log/nginx/access.log; client_max_body_size 5M; location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; location ~* \.(jpg|jpeg|gif|png|ico|css|bmp|js|html)$ { access_log off; expires max; root /home/foo/Foo/current/public; break; } if ($host ~ 'www.domain.foo') { rewrite ^/(.*)$ http://domain/foo/$1 permanent; } proxy_pass http://production; break; } } server { listen 80; server_name "staging.domain.foo"; access_log /var/log/nginx/access.staging.log; error_log /var/log/nginx/error.staging.log; client_max_body_size 5M; location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://staging; break; } } server { listen 80; ## listen for ipv4 server_name "foobar.domain.foo"; access_log /var/log/nginx/access.log; location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if ($host = 'foobar.domain.foo') { proxy_pass http://foobar; break; } } } server { listen 80; ## listen for ipv4 server_name foobar.staging.domain.foo; location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://foobar_staging; break; } } server { listen 80; server_name "~^(.+)\.domain\.foo$"; location / { proxy_intercept_errors on; error_page 404 = http://domain.foo/404; set $subdomain $1; rewrite /$ "/$subdomain/index.html" break; rewrite ^ /$subdomain$request_uri? break; proxy_pass http://bucket.domain.foo.s3.amazonaws.com; } } server { listen 80; server_name "~^(.+)\.staging\.domain\.foo$"; location / { proxy_intercept_errors on; set $subdomain $1; rewrite /$ "/$subdomain/index.html" break; rewrite ^ /$subdomain$request_uri? break; proxy_pass http://bucket.staging.domain.foo.s3.amazonaws.com; } } upstream production { server 111.255.111.110:8000; server 111.255.111.110:8001; server 111.255.111.110:8002; server 111.255.111.110:8003; } upstream staging { server 222.255.222.222:8000; server 222.255.222.222:8001; } upstream foobar { server 111.255.222.165:9000; server 111.255.222.165:9001; server 111.255.222.165:9002; } upstream foobar_staging { server 222.255.222.222:9000; } What happens now when I point my browser to staging.domain.foo is that it hangs. Can't find anything in the logs, but for example the access.staging.log and errors.staging.log are created. Anybody has an idea? :)

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hall.dll errors

- by Robert Elliott

I am getting frequent BSoDs, mostly with hall.dll errors. I have Dell Inspiron laptop running Windows 7 SP1. The following file, werfault, is shown below. Can anyone help me work out what is wrong? Version=1 EventType=BlueScreen EventTime=129987824768810026 ReportType=4 Consent=1 ReportIdentifier=1c3e1c58-3b30-11e2-9074-002219f61870 IntegratorReportIdentifier=113012-32557-01 Response.type=4 DynamicSig[1].Name=OS Version DynamicSig[1].Value=6.1.7601.2.1.0.768.3 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 UI[2]=C:\Windows\system32\wer.dll UI[3]=Windows has recovered from an unexpected shutdown UI[4]=Windows can check online for a solution to the problem. UI[5]=&Check for solution UI[6]=&Check later UI[7]=Cancel UI[8]=Windows has recovered from an unexpected shutdown UI[9]=A problem caused Windows to stop working correctly. Windows will notify you if a solution is available. UI[10]=Close Sec[0].Key=BCCode Sec[0].Value=a Sec[1].Key=BCP1 Sec[1].Value=0000000000000000 Sec[2].Key=BCP2 Sec[2].Value=0000000000000002 Sec[3].Key=BCP3 Sec[3].Value=0000000000000000 Sec[4].Key=BCP4 Sec[4].Value=FFFFF80002C0E477 Sec[5].Key=OS Version Sec[5].Value=6_1_7601 Sec[6].Key=Service Pack Sec[6].Value=1_0 Sec[7].Key=Product Sec[7].Value=768_1 File[0].CabName=113012-32557-01.dmp File[0].Path=113012-32557-01.dmp File[0].Flags=589826 File[0].Type=2 File[0].Original.Path=C:\Windows\Minidump\113012-32557-01.dmp File[1].CabName=sysdata.xml File[1].Path=WER-75941-0.sysdata.xml File[1].Flags=589826 File[1].Type=5 File[1].Original.Path=C:\Users\Robert\AppData\Local\Temp\WER-75941-0.sysdata.xml File[2].CabName=Report.cab File[2].Path=Report.cab File[2].Flags=196608 File[2].Type=7 File[2].Original.Path=Report.cab FriendlyEventName=Shut down unexpectedly ConsentKey=BlueScreen AppName=Windows AppPath=C:\Windows\System32\WerFault.exe *********From the minidump file**** RAX = fffff88002f22150 RBX = fffffa80074141f0 RCX = 000000000000000a RDX = 0000000000000000 RSI = fffffa8007278180 RDI = 0000000000000001 R9 = 0000000000000000 R10 = fffff80002c0e477 R11 = 0000000000000000 R12 = fffffa800523e7a0 R13 = 0000000000001000 R14 = 0000000000000028 R15 = fffffa80074141f0 RBP = fffff88002f22210 RIP = fffff80002cd3fc0 RSP = fffff88002f22048 SS = 0000 GS = 002b FS = 0053 ES = 002b DS = 002b CS = 0010 Flags = 00200286 fffff800`02e99ac0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ad0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ae0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99af0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b30 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00 00 ................ fffff800`02e99b40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b50 00 00 00 00 00 00 00 00 00 00 00 00 ............ fffff800`02e81928 00 00 00 00 .... fffff800`02e81924 00 00 00 00 .... fffff800`02e0a880 37 36 30 31 2E 31 37 39 34 34 2E 61 6D 64 36 34 7601.17944.amd64 fffff800`02e0a890 66 72 65 2E 77 69 6E 37 73 70 31 5F 67 64 72 2E fre.win7sp1_gdr. fffff800`02e0a8a0 31 32 30 38 33 30 2D 30 33 33 33 00 00 00 00 00 120830-0333..... fffff800`02e0a8b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a900 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a910 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a920 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a930 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a940 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a950 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a960 35 36 65 38 62 61 31 33 2D 37 30 32 39 2D 34 37 56e8ba13-7029-47 fffff800`02e0a970 32 38 2D 61 35 30 36 2D 32 64 64 62 34 61 30 63 28-a506-2ddb4a0c fffff800`02c0e000 C5 0F 85 79 02 00 00 8B 9C 24 90 00 00 00 E9 A5 ...y.....$...... fffff800`02c0e010 00 00 00 44 2B C3 45 33 C9 E8 5E 14 00 00 49 3B ...D+.E3..^...I; fffff800`02c0e020 C5 74 2B 44 8B 8C 24 90 00 00 00 48 8B C8 41 8D .t+D..$....H..A. fffff800`02c0e030 51 FF 41 3B D5 76 0D 44 8B C2 49 83 E8 01 48 8B Q.A;.v.D..I...H. fffff800`02c0e040 49 08 75 F6 48 89 79 08 41 03 D9 48 8B F8 3B DD I.u.H.y.A..H..;. fffff800`02c0e050 75 08 48 8B C7 E9 26 02 00 00 48 8B 96 98 00 00 u.H...&...H..... fffff800`02c0e060 00 48 8D 84 24 90 00 00 00 44 8B C5 48 89 44 24 .H..$....D..H.D$ fffff800`02c0e070 28 44 2B C3 45 33 C9 48 8B CE 44 88 6C 24 20 E8 (D+.E3.H..D.l$ . fffff800`02c0e080 CC 14 00 00 49 3B C5 74 2B 44 8B 8C 24 90 00 00 ....I;.t+D..$... fffff800`02c0e090 00 48 8B C8 41 8D 51 FF 41 3B D5 76 0D 44 8B C2 .H..A.Q.A;.v.D.. fffff800`02c0e0a0 49 83 E8 01 48 8B 49 08 75 F6 48 89 79 08 41 03 I...H.I.u.H.y.A. fffff800`02c0e0b0 D9 48 8B F8 3B DD 74 9A 44 38 AE 28 01 00 00 0F .H..;.t.D8.(.... fffff800`02c0e0c0 85 DF 00 00 00 48 8D 44 24 30 4C 8D 8C 24 A0 00 .....H.D$0L..$.. fffff800`02c0e0d0 00 00 4C 8D 84 24 A8 00 00 00 8B D5 48 8B CE 48 ..L..$......H..H fffff800`02c0e0e0 89 44 24 20 E8 F7 1F 00 00 8B F8 89 84 24 90 00 .D$ .........$.. fffff800`02c0e0f0 00 00 41 3B C5 0F 84 83 01 00 00 4C 8B A4 24 A8 ..A;.......L..$. fffff800`02c0e100 00 00 00 44 8B 84 24 A0 00 00 00 48 8B 8E 98 00 ...D..$....H.... fffff800`02c0e110 00 00 49 8B D4 44 8B C8 E8 DB 1B 00 00 49 3B C5 ..I..D.......I;. fffff800`02c0e120 74 35 48 8B 96 98 00 00 00 48 8D 84 24 90 00 00 t5H......H..$... fffff800`02c0e130 00 41 B1 01 48 89 44 24 28 44 8B C5 48 8B CE 44 .A..H.D$(D..H..D fffff800`02c0e140 88 6C 24 20 E8 43 12 00 00 49 3B C5 0F 84 2C 01 .l$ .C...I;...,. fffff800`02c0e150 00 00 E9 29 01 00 00 48 8B 5C 24 30 49 3B DD 74 ...)...H.\$0I;.t fffff800`02c0e160 2A 4D 3B E5 74 0C 48 8B D3 49 8B CC FF 15 AE CE *M;.t.H..I...... fffff800`02c0e170 01 00 48 8B CB FF 15 95 CF 01 00 33 D2 48 8B CB ..H........3.H.. fffff800`02c0e180 FF 15 AA CE 01 00 E9 F3 00 00 00 C1 E7 0C 41 B8 ..............A. fffff800`02c0e190 01 00 00 00 49 8B CC 8B D7 FF 15 99 CE 01 00 E9 ....I........... fffff800`02c0e1a0 DA 00 00 00 2B EB 33 C9 41 B8 48 61 6C 20 8B D5 ....+.3.A.Hal .. fffff800`02c0e1b0 44 8B FD 48 C1 E2 03 FF 15 33 D4 01 00 4C 8B F0 D..H.....3...L.. fffff800`02c0e1c0 49 3B C5 0F 84 8F 00 00 00 45 8B E5 41 3B ED 76 I;.......E..A;.v fffff800`02c0e1d0 3F 4C 8B E8 BA 00 10 00 00 B9 04 00 00 00 41 B8 ?L............A. fffff800`02c0e1e0 48 61 6C 20 FF 15 06 D4 01 00 49 89 45 00 48 85 Hal ......I.E.H. fffff800`02c0e1f0 C0 74 39 48 8B C8 FF 15 BC CE 01 00 48 C1 E8 20 .t9H........H.. fffff800`02c0e200 85 C0 75 28 41 FF C4 49 83 C5 08 44 3B E5 72 C4 ..u(A..I...D;.r. fffff800`02c0e210 48 8B 8E 98 00 00 00 44 8B C5 BA 01 00 00 00 E8 H......D........ fffff800`02c0e220 58 19 00 00 4C 8B E8 48 85 C0 75 6C 45 33 ED 45 X...L..H..ulE3.E fffff800`02c0e230 3B E5 76 19 49 8B EE 48 8B 4D 00 33 D2 FF 15 ED ;.v.I..H.M.3.... fffff800`02c0e240 CD 01 00 48 83 C5 08 49 83 EC 01 75 EA 33 D2 49 ...H...I...u.3.I fffff800`02c0e250 8B CE FF 15 D8 CD 01 00 41 3B DD 76 21 8B EB 48 ........A;.v!..H fffff800`02c0e260 8B 96 98 00 00 00 48 8B 5F 08 4C 8B C7 48 8B CE ......H._.L..H.. fffff800`02c0e270 E8 2B 15 00 00 48 83 ED 01 48 8B FB 75 E1 33 C0 .+...H...H..u.3. fffff800`02c0e280 48 8B 9C 24 98 00 00 00 48 83 C4 50 41 5F 41 5E H..$....H..PA_A^ fffff800`02c0e290 41 5D 41 5C 5F 5E 5D C3 8D 4D FF 85 C9 74 0C 8B A]A\_^]..M...t.. fffff800`02c0e2a0 D1 48 83 EA 01 48 8B 40 08 75 F6 48 89 78 08 49 [email protected] fffff800`02c0e2b0 8B FD 85 ED 74 29 49 8B DE 48 8B 0B FF 15 F6 CD ....t)I..H...... fffff800`02c0e2c0 01 00 41 89 45 00 48 8B 03 48 83 C3 08 48 83 C8 ..A.E.H..H...H.. fffff800`02c0e2d0 0F 49 83 EF 01 49 89 45 10 4D 8B 6D 08 75 DA 48 .I...I.E.M.m.u.H fffff800`02c0e2e0 8B 8E 98 00 00 00 48 8D 54 24 38 48 83 C1 78 FF ......H.T$8H..x. fffff800`02c0e2f0 15 83 CD 01 00 4C 8B 9E 98 00 00 00 48 8D 4C 24 .....L......H.L$ fffff800`02c0e300 38 41 01 AB D0 00 00 00 FF 15 3A CD 01 00 33 D2 8A........:...3. fffff800`02c0e310 49 8B CE FF 15 17 CD 01 00 E9 34 FD FF FF 90 90 I.........4..... fffff800`02c0e320 90 90 90 90 45 85 C0 74 43 48 89 5C 24 08 48 89 ....E..tCH.\$.H. fffff800`02c0e330 74 24 10 57 48 83 EC 20 48 8B F1 41 8B F8 48 8B t$.WH.. H..A..H. fffff800`02c0e340 5A 08 4C 8B C2 48 8B 96 98 00 00 00 48 8B CE E8 Z.L..H......H... fffff800`02c0e350 4C 14 00 00 48 83 EF 01 48 8B D3 75 E1 48 8B 5C L...H...H..u.H.\ fffff800`02c0e360 24 30 48 8B 74 24 38 48 83 C4 20 5F C3 90 90 90 $0H.t$8H.. _.... fffff800`02c0e370 90 90 90 90 48 8B C4 48 89 58 08 48 89 68 10 48 ....H..H.X.H.h.H fffff800`02c0e380 89 70 18 48 89 78 20 41 54 41 55 4C 8B D9 4D 8B .p.H.x ATAUL..M. fffff800`02c0e390 E0 48 8B F2 B9 FF 0F 00 00 4D 85 DB 75 08 4C 8B .H.......M..u.L. fffff800`02c0e3a0 D1 40 32 FF EB 12 4D 8B 93 88 00 00 00 41 8A BB [email protected].. fffff800`02c0e3b0 91 00 00 00 49 C1 EA 0C 44 8B 44 24 38 41 8B C1 ....I...D.D$8A.. fffff800`02c0e3c0 4C 2B 4E 20 23 C1 49 C1 E9 0C 41 BD 00 10 00 00 L+N #.I...A..... fffff800`02c0e3d0 41 8B D5 41 8B E9 2B D0 8B CA 4C 39 54 EE 30 76 A..A..+...L9T.0v fffff800`02c0e3e0 04 33 C9 EB 4F 41 3B D0 73 43 4C 8D 4C EE 38 4D .3..OA;.sCL.L.8M fffff800`02c0e3f0 39 11 77 39 49 8B 59 F8 48 8D 43 01 49 3B 01 75 9.w9I.Y.H.C.I;.u fffff800`02c0e400 2C 48 8B C3 49 33 01 48 A9 00 00 F0 FF 75 1E 40 ,H..I3.H.....u.@ fffff800`02c0e410 80 FF 01 74 0C 49 33 19 48 F7 C3 F0 FF FF FF 75 ...t.I3.H......u fffff800`02c0e420 0C 41 03 CD 49 83 C1 08 41 3B C8 72 C2 41 3B C8 .A..I...A;.r.A;. fffff800`02c0e430 41 0F 47 C8 4D 85 DB 0F 84 92 00 00 00 41 80 BB A.G.M........A.. fffff800`02c0e440 28 01 00 00 00 0F 84 84 00 00 00 4C 39 54 EE 30 (..........L9T.0 fffff800`02c0e450 76 7D 8B CA 48 8D 44 EE 38 41 3B D0 73 11 4C 39 v}..H.D.8A;.s.L9 fffff800`02c0e460 10 76 0C 41 03 CD 48 83 C0 08 41 3B C8 72 EF 49 .v.A..H...A;.r.I fffff800`02c0e470 8B 44 24 18 41 3B C8 44 8B 08 4C 8B 50 08 41 0F .D$.A;.D..L.P.A. fffff800`02c0e480 47 C8 41 C1 E9 0C EB 3A 45 8B 02 41 8D 41 01 41 G.A....:E..A.A.A fffff800`02c0e490 C1 E8 0C 44 3B C0 75 2E 41 8B C0 41 33 C1 A9 00 ...D;.u.A..A3... fffff800`02c0e4a0 00 F0 FF 75 21 40 80 FF 01 74 0D 41 8B C0 41 33 [email protected] fffff800`02c0e4b0 C1 A9 F0 FF FF FF 75 0E 4D 8B 52 08 45 8B C8 41 ......u.M.R.E..A fffff800`02c0e4c0 03 D5 3B D1 72 C2 3B D1 0F 47 D1 8B C2 EB 02 8B ..;.r.;..G...... fffff800`02c0e4d0 C1 48 8B 5C 24 18 48 8B 6C 24 20 48 8B 74 24 28 .H.\$.H.l$ H.t$( fffff800`02c0e4e0 48 8B 7C 24 30 41 5D 41 5C C3 90 90 90 90 90 90 H.|$0A]A\....... fffff800`02c0e4f0 48 89 5C 24 08 48 89 6C 24 10 48 89 74 24 18 57 H.\$.H.l$.H.t$.W fffff800`02c0e500 41 54 41 55 48 83 EC 30 48 8B 5C 24 70 4D 8B E1 ATAUH..0H.\$pM.. fffff800`02c0e510 49 8B F0 8B 03 4C 8B EA 48 8B E9 89 44 24 20 E8 I....L..H...D$ . fffff800`02c0e520 50 FE FF FF 49 8B CC 89 03 49 2B 4D 20 8B F8 48 P...I....I+M ..H fffff800`02c0e530 C1 E9 0C 8B C9 49 8B 54 CD 30 49 8B CC 48 C1 E2 .....I.T.0I..H.. fffff800`02c0e540 0C 81 E1 FF 0F 00 00 48 03 D1 48 85 F6 74 72 48 .......H..H..trH fffff800`02c0e550 39 95 88 00 00 00 73 69 4C 8B 4E 18 48 8B 84 24 9.....siL.N.H..$ fffff800`02c0e560 80 00 00 00 41 8B DC 41 8B 09 81 E3 FF 0F 00 00 ....A..A........ fffff800`02c0e570 03 CB 80 7C 24 78 01 48 89 08 75 17 4D 8B C4 49 ...|$x.H..u.M..I fffff800`02c0e580 8B D5 48 8B CD C6 44 24 28 01 89 7C 24 20 E8 C5 ..H...D$(..|$ .. fffff800`02c0e590 06 00 00 8B C7 C1 EF 0C 25 FF 0F 00 00 8D 8C 18 ........%....... fffff800`02c0e5a0 FF 0F 00 00 48 8B 46 18 C1 E9 0C 03 CF 74 0C 8B ....H.F......t.. fffff800`02c0e5b0 D1 48 83 EA 01 48 8B 40 08 75 F6 48 89 46 18 EB [email protected].. fffff800`02c0e5c0 0B 48 8B 84 24 80 00 00 00 48 89 10 48 8B 5C 24 .H..$....H..H.\$ fffff800`02c0e5d0 50 48 8B 6C 24 58 48 8B 74 24 60 48 83 C4 30 41 PH.l$XH.t$`H..0A fffff800`02c0e5e0 5D 41 5C 5F C3 90 90 90 90 90 90 90 4D 85 C0 0F ]A\_........M... fffff800`02c0e5f0 84 09 01 00 00 48 8B C4 48 89 58 08 48 89 68 10 .....H..H.X.H.h. fffff800`02c0e600 48 89 70 18 48 89 78 20 41 54 41 55 41 56 48 83 H.p.H.x ATAUAVH. fffff800`02c0e610 EC 30 44 8A 64 24 78 49 8B D8 49 8B F1 4C 8B EA .0D.d$xI..I..L.. fffff800`02c0e620 4C 8B F1 49 89 58 18 41 80 FC 01 0F 84 AF 00 00 L..I.X.A........ fffff800`02c0e630 00 8B 7C 24 70 85 FF 0F 84 9F 00 00 00 4C 8B CE ..|$p........L.. fffff800`02c0e640 4C 8B C3 49 8B D5 49 8B CE 89 7C 24 20 E8 22 FD L..I..I...|$ .". fffff800`02c0e650 FF FF 48 8B CE 49 2B 4D 20 8B E8 48 C1 E9 0C 8B ..H..I+M ..H.... fffff800`02c0e660 C9 49 8B 54 CD 30 48 8B CE 48 C1 E2 0C 81 E1 FF .I.T.0H..H...... fffff800`02c0e670 0F 00 00 48 03 D1 49 39 96 88 00 00 00 73 52 4C ...H..I9.....sRL fffff800`02c0e680 8B 4B 18 4C 8B C6 49 8B D5 49 8B CE 44 88 64 24 .K.L..I..I..D.d$ fffff800`02c0e690 28 89 6C 24 20 E8 BE 05 00 00 8B C5 44 8B DE 25 (.l$ .......D..% fffff800`02c0e6a0 FF 0F 00 00 41 81 E3 FF 0F 00 00 41 8D 8C 03 FF ....A......A.... fffff800`02c0e6b0 0F 00 00 8B C5 C1 E8 0C C1 E9 0C 03 C8 48 8B 43 .............H.C fffff800`02c0e6c0 18 74 0A 48 83 E9 01 48 8B 40 08 75 F6 48 89 43 [email protected] fffff800`02c0e6d0 18 48 03 F5 2B FD 0F 85 61 FF FF FF 48 89 5B 18 .H..+...a...H.[. fffff800`02c0e6e0 48 8B 5C 24 50 48 8B 6C 24 58 48 8B 74 24 60 48 H.\$PH.l$XH.t$`H fffff800`02c0e6f0 8B 7C 24 68 48 83 C4 30 41 5E 41 5D 41 5C C3 90 .|$hH..0A^A]A\.. fffff800`02c0e700 90 90 90 90 90 90 90 90 48 89 54 24 10 53 55 56 ........H.T$.SUV fffff800`02c0e710 57 41 54 41 55 41 56 41 57 48 83 EC 58 48 8B F2 WATAUAVAWH..XH.. fffff800`02c0e720 48 8B D9 48 8D 54 24 30 48 8D 0D B9 67 02 00 45 H..H.T$0H...g..E fffff800`02c0e730 8B E1 49 8B F8 4C 89 84 24 B0 00 00 00 FF 15 35 ..I..L..$......5 fffff800`02c0e740 C9 01 00 4C 8B 2D 86 67 02 00 4C 8B 35 77 67 02 ...L.-.g..L.5wg. fffff800`02c0e750 00 48 8B C6 44 8B C6 48 2B 43 20 41 81 E0 FF 0F .H..D..H+C A.... fffff800`02c0e760 00 00 BD 00 10 00 00 48 C1 E8 0C 45 89 45 2C 8B .......H...E.E,. fffff800`02c0e770 CD 8B C0 41 2B C8 41 89 4D 28 4C 8D 4C C3 30 48 ...A+.A.M(L.L.0H fffff800`02c0e780 8B C6 48 25 00 F0 FF FF 49 89 45 20 49 89 46 20 ..H%....I.E I.F fffff800`02c0e790 45 89 46 2C 41 89 4E 28 44 89 84 24 B8 00 00 00 E.F,A.N(D..$.... fffff800`02c0e7a0 4C 89 8C 24 A0 00 00 00 45 85 E4 0F 84 90 01 00 L..$....E....... fffff800`02c0e7b0 00 48 8B 5F 10 48 81 E3 00 F0 FF FF 75 3C 8B 07 .H._.H......u<.. fffff800`02c0e7c0 48 8B 0D 49 67 02 00 44 8D 4B 01 48 C1 E8 0C 4D H..Ig..D.K.H...M fffff800`02c0e7d0 8B C6 BA 48 61 6C 20 49 89 46 30 FF 15 DF C8 01 ...Hal I.F0..... fffff800`02c0e7e0 00 48 8B D8 48 85 C0 0F 84 36 01 00 00 4C 8B 8C .H..H....6...L.. fffff800`02c0e7f0 24 A0 00 00 00 41 B7 01 EB 09 41 8B C0 48 03 D8 $....A....A..H.. fffff800`02c0e800 45 32 FF 49 8B 01 33 FF 49 89 45 30 48 8B 0D C5 E2.I..3.I.E0H... fffff800`02c0e810 66 02 00 44 8B CF 4D 8B C5 BA 48 61 6C 20 FF 15 f..D..M...Hal .. fffff800`02c0e820 9C C8 01 00 48 8B F0 48 85 C0 75 24 FF C7 83 FF ....H..H..u$.... fffff800`02c0e830 06 7C D9 48 21 44 24 20 45 33 C9 41 B8 01 EF 00 .|.H!D$ E3.A.... fffff800`02c0e840 00 48 8B D5 B9 AC 00 00 00 FF 15 A1 CA 01 00 CC .H.............. fffff800`02c0e850 8B FD 2B BC 24 B8 00 00 00 44 3B E7 41 0F 42 FC ..+.$....D;.A.B. fffff800`02c0e860 80 BC 24 C0 00 00 00 01 8B EF 44 8B C7 75 0E 48 ..$.......D..u.H fffff800`02c0e870 8B D0 48 8B CB FF 15 AD 33 02 00 EB 0B 48 8B D3 ..H.....3....H.. fffff800`02c0e880 48 8B C8 E8 C8 A6 01 00 4D 8B C5 BA 48 61 6C 20 H.......M...Hal fffff800`02c0e890 48 8B CE FF 15 47 C8 01 00 41 80 FF 01 75 11 4D H....G...A...u.M fffff800`02c0e8a0 8B C6 BA 48 61 6C 20 48 8B CB FF 15 30 C8 01 00 ...Hal H....0... fffff800`02c0e8b0 48 8B 84 24 A8 00 00 00 4C 8B 8C 24 A0 00 00 00 H..$....L..$.... fffff800`02c0e8c0 44 2B E7 48 8B BC 24 B0 00 00 00 48 03 C5 BD 00 D+.H..$....H.... fffff800`02c0e8d0 10 00 00 48 8B 7F 08 49 83 C1 08 45 33 C0 44 3B ...H..I...E3.D; fffff800`02c0e8e0 E5 48 8B C8 41 8B D4 0F 47 D5 48 81 E1 00 F0 FF .H..A...G.H..... fffff800`02c0e8f0 FF 48 89 84 24 A8 00 00 00 49 89 4D 20 41 89 55 .H..$....I.M A.U fffff800`02c0e900 28 25 FF 0F 00 00 41 89 45 2C 49 89 4E 20 41 89 (%....A.E,I.N A. fffff800`02c0e910 46 2C 41 89 56 28 48 89 BC 24 B0 00 00 00 E9 75 F,A.V(H..$.....u fffff800`02c0e920 FE FF FF 48 83 64 24 20 00 45 33 C9 41 B8 00 EF ...H.d$ .E3.A... fffff800`02c0e930 00 00 48 8B D5 B9 AC 00 00 00 FF 15 B0 C9 01 00 ..H............. fffff800`02c0e940 CC 48 8D 4C 24 30 FF 15 FC C6 01 00 48 83 C4 58 .H.L$0......H..X fffff800`02c0e950 41 5F 41 5E 41 5D 41 5C 5F 5E 5D 5B C3 90 90 90 A_A^A]A\_^][.... fffff800`02c0e960 90 90 90 90 48 89 5C 24 08 48 89 6C 24 10 48 89 ....H.\$.H.l$.H. fffff800`02c0e970 74 24 18 57 41 54 41 55 48 83 EC 50 33 C0 49 8B t$.WATAUH..P3.I. fffff800`02c0e980 F9 41 8B F0 4C 8B E2 48 8B CA 49 C7 C3 00 F0 FF .A..L..H..I..... fffff800`02c0e990 FF 45 85 C0 74 10 4C 85 59 10 74 0A 48 8B 49 08 .E..t.L.Y.t.H.I. fffff800`02c0e9a0 FF C0 3B C6 72 F0 3B C6 75 09 49 83 21 00 E9 FB ..;.r.;.u.I.!... fffff800`02c0e9b0 00 00 00 65 48 8B 04 25 20 00 00 00 33 C9 44 8B ...eH..% ...3.D. fffff800`02c0e9c0 50 24 48 8B 05 F7 64 02 00 4A 8B 2C D0 4C 8D 4D P$H...d..J.,.L.M fffff800`02c0e9d0 30 45 85 C0 74 22 4C 8B C6 4C 85 5A 10 75 0F 8B 0E..t"L..L.Z.u.. fffff800`02c0e9e0 02 FF C1 48 C1 E8 0C 49 89 01 49 83 C1 08 49 83 ...H...I..I...I. fffff800`02c0e9f0 E8 01 48 8B 52 08 75 E1 33 DB C1 E1 0C 41 B5 01 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A.x0 fffff800`02c0ebb0 00 49 8B F8 8B F2 48 8B D9 BD 01 00 00 00 75 0F .I....H.......u. fffff800`02c0ebc0 49 8B 10 49 8B 48 08 FF 15 53 C4 01 00 EB 4A 4D I..I.H...S....JM fffff800`02c0ebd0 8B 00 48 8B 4F 08 BA 48 61 6C 20 FF 15 FF C4 01 ..H.O..Hal ..... fffff800`02c0ebe0 00 80 3D 30 63 02 00 00 75 2F 48 8D 4F 18 FF 15 ..=0c...u/H.O... fffff800`02c0ebf0 3C C5 01 00 48 8B 57 10 83 C8 FF F0 0F C1 42 18 <...H.W.......B. fffff800`02c0ec00 83 C0 FF 75 14 F0 0F B1 6A 1C 75 0D 48 8D 0D ED ...u....j.u.H... fffff800`02c0ec10 62 02 00 FF 15 4F C4 01 00 85 F6 74 1E 48 8B CE b....O.....t.H.. fffff800`02c0ec20 F6 43 10 10 74 0C 8B 43 10 25 EF 0F 00 00 48 89 .C..t..C.%....H. fffff800`02c0ec30 43 10 48 2B CD 48 8B 5B 08 75 E5 48 8B 5C 24 30 C.H+.H.[.u.H.\$0 fffff800`02c0ec40 48 8B 6C 24 40 48 8B 74 24 48 48 83 C4 20 5F C3 [email protected]$HH.. _. fffff800`02c0ec50 90 90 90 90 90 90 90 90 48 89 5C 24 18 48 89 4C ........H.\$.H.L fffff800`02c0ec60 24 08 55 56 57 41 54 41 55 41 56 41 57 48 83 EC $.UVWATAUAVAWH.. fffff800`02c0ec70 70 4D 8B F1 4D 8B E8 48 8B F2 4C 8B D1 44 0F 20 pM..M..H..L..D. fffff800`02c0ec80 C7 F6 42 0A 05 74 06 48 8B 5A 18 EB 2A 45 33 C9 ..B..t.H.Z..*E3. fffff800`02c0ec90 33 D2 48 8B CE 45 8D 41 01 C7 44 24 28 20 00 00 3.H..E.A..D$( .. fffff800`02c0eca0 00 83 64 24 20 00 FF 15 1C C4 01 00 4C 8B 94 24 ..d$ .......L..$ fffff800`02c0ecb0 B0 00 00 00 48 8B D8 BD 02 00 00 00 48 85 DB 75 ....H.......H..u fffff800`02c0ecc0 4A 40 3A FD 76 1F 48 21 5C 24 20 45 33 C9 BA 00 J@:.v.H!\$ E3... fffff800`02c0ecd0 10 00 00 B9 AC 00 00 00 41 B8 05 EF 00 00 FF 15 ........A....... fffff800`02c0ece0 0C C6 01 00 CC 8A 84 24 D8 00 00 00 44 8B 8C 24 .......$....D..$ fffff800`02c0ecf0 D0 00 00 00 4D 8B C6 49 8B D5 48 8B CE 88 44 24 ....M..I..H...D$ fffff800`02c0ed00 20 E8 02 FA FF FF E9 4D 01 00 00 44 8B BC 24 D0 ......M...D..$. fffff800`02c0ed10 00 00 00 BA FF 0F 00 00 41 8B CD 23 CA 41 8B C7 ........A..#.A.. fffff800`02c0ed20 C6 84 24 B8 00 00 00 00 23 C2 44 8D A4 01 FF 0F ..$.....#.D..... fffff800`02c0ed30 00 00 41 8B C7 41 C1 EC 0C C1 E8 0C 44 03 E0 44 ..A..A......D..D fffff800`02c0ed40 89 64 24 30 40 3A FD 76 41 33 C9 49 8B C6 45 85 .d$0@:.vA3.I..E. fffff800`02c0ed50 E4 74 64 48 F7 40 10 00 F0 FF FF 74 0D 48 8B 40 [email protected].@ fffff800`02c0ed60 08 FF C1 41 3B CC 72 EB EB 4D 48 83 64 24 20 00 ...A;.r..MH.d$ .

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ASP.net FFMPEG video conversion receiving error: "Error number -2 occurred"

- by Pete

Hello, I am attempting to integrate FFMPEG into my asp.net website. The process I am trying to complete is to upload a video, check if it is .avi, .mov, or .wmv and then convert this video into an mp4 using x264 so my flash player can play it. I am using an http handler (ashx) file to handle my upload. This is where I am also putting my conversion code. I am not sure if this is the best place to put it, but I wanted to see if i could at least get it working. Additionally, I was able to complete the conversion manually through cmd line. The error -2 comes up when i output the standard error from the process I executed. This is the error i receive: FFmpeg version SVN-r23001, Copyright (c) 2000-2010 the FFmpeg developers built on May 1 2010 06:06:15 with gcc 4.4.2 configuration: --enable-memalign-hack --cross-prefix=i686-mingw32- --cc=ccache-i686-mingw32-gcc --arch=i686 --target-os=mingw32 --enable-runtime-cpudetect --enable-avisynth --enable-gpl --enable-version3 --enable-bzlib --enable-libgsm --enable-libfaad --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libxvid --enable-libschroedinger --enable-libx264 --enable-libopencore_amrwb --enable-libopencore_amrnb libavutil 50.15. 0 / 50.15. 0 libavcodec 52.66. 0 / 52.66. 0 libavformat 52.61. 0 / 52.61. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0.10. 0 / 0.10. 0 532010_Robotica_720.wmv: Error number -2 occurred here is the code below: <%@ WebHandler Language="VB" Class="upload" %> Imports System Imports System.Web Imports System.IO Imports System.Diagnostics Imports System.Threading Public Class upload : Implements IHttpHandler Public currentTime As System.DateTime Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest currentTime = System.DateTime.Now If (Not context.Request.Files("Filedata") Is Nothing) Then Dim file As HttpPostedFile : file = context.Request.Files("Filedata") Dim targetDirectory As String : targetDirectory = HttpContext.Current.Server.MapPath(context.Request("folder")) Dim targetFilePath As String : targetFilePath = Path.Combine(targetDirectory, currentTime.Month & currentTime.Day & currentTime.Year & "_" & file.FileName) Dim fileNameArray As String() fileNameArray = Split(file.FileName, ".") If (System.IO.File.Exists(targetFilePath)) Then System.IO.File.Delete(targetFilePath) End If file.SaveAs(targetFilePath) Select Case fileNameArray(UBound(fileNameArray)) Case "avi", "mov", "wmv" Dim fileargs As String = fileargs = "-y -i " & currentTime.Month & currentTime.Day & currentTime.Year & "_" & file.FileName & " -ab 96k -vcodec libx264 -vpre normal -level 41 " fileargs += "-crf 25 -bufsize 20000k -maxrate 25000k -g 250 -r 20 -s 900x506 -coder 1 -flags +loop " fileargs += "-cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 7 -me_range 16 -keyint_min 25 " fileargs += "-sc_threshold 40 -i_qfactor 0.71 -rc_eq 'blurCplx^(1-qComp)' -bf 16 -b_strategy 1 -bidir_refine 1 " fileargs += "-refs 6 -deblockalpha 0 -deblockbeta 0 -f mp4 " & currentTime.Month & currentTime.Day & currentTime.Year & "_" & file.FileName & ".mp4" Dim proc As New Diagnostics.Process() proc.StartInfo.FileName "ffmpeg.exe" proc.StartInfo.Arguments = fileargs proc.StartInfo.UseShellExecute = False proc.StartInfo.CreateNoWindow = True proc.StartInfo.RedirectStandardOutput = True proc.StartInfo.RedirectStandardError = True AddHandler proc.OutputDataReceived, AddressOf SaveTextToFile proc.Start() SaveTextToFile2(proc.StandardError.ReadToEnd()) proc.WaitForExit() proc.Close() End Select Catch ex As System.IO.IOException Thread.Sleep(2000) GoTo Conversion Finally context.Response.Write("1") End Try End If End Sub Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable Get Return False End Get End Property Private Shared Sub SaveTextToFile(ByVal sendingProcess As Object, ByVal strData As DataReceivedEventArgs) Dim FullPath As String = "text.txt" Dim Contents As String = "" Dim objReader As StreamWriter objReader = New StreamWriter(FullPath) If Not String.IsNullOrEmpty(strData.Data) Then objReader.Write(Environment.NewLine + strData.Data) End If objReader.Close() End Sub Private Sub SaveTextToFile2(ByVal strData As String) Dim FullPath As String = "texterror.txt" Dim Contents As String = "" Dim objReader As StreamWriter objReader = New StreamWriter(FullPath) objReader.Write(Environment.NewLine + strData) objReader.Close() End Sub End Class

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How to make a tree view from MySQL and PHP and jquery

- by Mac Taylor

hey guys i need to show a treeview of my categories , saved in my mysql database . Database table : table : cats : columns: id,name,parent Here is a sample of what I want the markup to be like: <ul id="browser" class="filetree"> <li><span class="folder">Folder 1</span> <ul> <li><span class="file">Item 1.1</span></li> </ul> </li> <li><span class="folder">Folder 2</span> <ul> <li><span class="folder">Subfolder 2.1</span> <ul id="folder21"> <li><span class="file">File 2.1.1</span></li> <li><span class="file">File 2.1.2</span></li> </ul> </li> <li><span class="file">File 2.2</span></li> </ul> </li> <li><span class="file">File 4</span></li> </ul> i used this script to show treeview : http://www.dynamicdrive.com/dynamicindex1/treeview now problem is in php part : //function to build tree menu from db table test1 function tree_set($index) { global $menu; $q=mysql_query("select * from cats where parent='$index'"); if(!mysql_num_rows($q)) return; $menu .= '<ul>'."\n"; while($arr=mysql_fetch_assoc($q)) { $menu .= '<li>'; $menu .= '<span class="file">'.$arr['name'].'</span>';//you can add another output there $menu .=tree_set("".$arr['id'].""); $menu .= '</li>'."\n"; } $menu.= '</ul>'."\n"; return $menu; } //variable $menu must be defined before the function call $menu = ' <link rel="stylesheet" href="modules/Topics/includes/jquery.treeview.css" /> <script src="modules/Topics/includes/lib/jquery.cookie.js" type="text/javascript"></script> <script src="modules/Topics/includes/jquery.treeview.js" type="text/javascript"></script> <script type="text/javascript" src="modules/Topics/includes/demo/demo.js"></script> <ul id="browser" class="filetree">'."\n"; $menu .= tree_set(0); $menu .= '</ul>'; echo $menu; i even asked in this forum : http://forums.tizag.com/showthread.php?p=60649 problem is in php part of my codes that i mentioned . i cant show sub menus , i mean , really i dont know how to show sub menus is there any chance of a pro php coder helping me here ?

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Should we hire someone who writes C in Perl?

- by paxdiablo

One of my colleagues recently interviewed some candidates for a job and one said they had very good Perl experience. Since my colleague didn't know Perl, he asked me for a critique of some code written (off-site) by that potential hire, so I had a look and told him my concerns (the main one was that it originally had no comments and it's not like we gave them enough time). However, the code works so I'm loathe to say no-go without some more input. Another concern is that this code basically looks exactly how I'd code it in C. It's been a while since I did Perl (and I didn't do a lot, I'm more a Python bod for quick scripts) but I seem to recall that it was a much more expressive language than what this guy used. I'm looking for input from real Perl coders, and suggestions for how it could be improved (and why a Perl coder should know that method of improvement). You can also wax lyrical about whether people who write one language in a totally different language should (or shouldn't be hired). I'm interested in your arguments but this question is primarily for a critique of the code. The spec was to successfully process a CSV file as follows and output the individual fields: User ID,Name , Level,Numeric ID pax, Pax Morgan ,admin,0 gt," Turner, George" rubbish,user,1 ms,"Mark \"X-Men\" Spencer","guest user",2 ab,, "user","3" The output was to be something like this (the potential hire's code actually output this): User ID,Name , Level,Numeric ID: [User ID] [Name] [Level] [Numeric ID] pax, Pax Morgan ,admin,0: [pax] [Pax Morgan] [admin] [0] gt," Turner, George " rubbish,user,1: [gt] [ Turner, George ] [user] [1] ms,"Mark \"X-Men\" Spencer","guest user",2: [ms] [Mark "X-Men" Spencer] [guest user] [2] ab,, "user","3": [ab] [] [user] [3] Here is the code they submitted: #!/usr/bin/perl # Open file. open (IN, "qq.in") || die "Cannot open qq.in"; # Process every line. while (<IN>) { chomp; $line = $_; print "$line:\n"; # Process every field in line. while ($line ne "") { # Skip spaces and start with empty field. if (substr ($line,0,1) eq " ") { $line = substr ($line,1); next; } $field = ""; $minlen = 0; # Detect quoted field or otherwise. if (substr ($line,0,1) eq "\"") { $line = substr ($line,1); $pastquote = 0; while ($line ne "") { # Special handling for quotes (\\ and \"). if (length ($line) >= 2) { if (substr ($line,0,2) eq "\\\"") { $field = $field . "\""; $line = substr ($line,2); next; } if (substr ($line,0,2) eq "\\\\") { $field = $field . "\\"; $line = substr ($line,2); next; } } # Detect closing quote. if (($pastquote == 0) && (substr ($line,0,1) eq "\"")) { $pastquote = 1; $line = substr ($line,1); $minlen = length ($field); next; } # Only worry about comma if past closing quote. if (($pastquote == 1) && (substr ($line,0,1) eq ",")) { $line = substr ($line,1); last; } $field = $field . substr ($line,0,1); $line = substr ($line,1); } } else { while ($line ne "") { if (substr ($line,0,1) eq ",") { $line = substr ($line,1); last; } if ($pastquote == 0) { $field = $field . substr ($line,0,1); } $line = substr ($line,1); } } # Strip trailing space. while ($field ne "") { if (length ($field) == $minlen) { last; } if (substr ($field,length ($field)-1,1) eq " ") { $field = substr ($field,0, length ($field)-1); next; } last; } print " [$field]\n"; } } close (IN);

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JS: using 'var me = this' to reference an object instead of using a global array

- by Marco Demaio

The example below, is just an example, I know that I don't need an object to show an alert box when user clicks on div blocks, but it's just a simple example to explain a situation that frequently happens when writing JS code. In the example below I use a globally visible array of objects to keep a reference to each new created HelloObject, in this way events called when clicking on a div block can use the reference in the arry to call the HelloObject's public function hello(). 1st have a look at the code: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <title>Test </title> <script type="text/javascript"> /***************************************************** Just a cross browser append event function, don't need to understand this one to answer my question *****************************************************/ function AppendEvent(html_element, event_name, event_function) {if(html_element) {if(html_element.attachEvent) html_element.attachEvent("on" + event_name, event_function); else if(html_element.addEventListener) html_element.addEventListener(event_name, event_function, false); }} /****************************************************** Just a test object ******************************************************/ var helloobjs = []; var HelloObject = function HelloObject(div_container) { //Adding this object in helloobjs array var id = helloobjs.length; helloobjs[id] = this; //Appending click event to show the hello window AppendEvent(div_container, 'click', function() { helloobjs[id].hello(); //THIS WORKS! }); /***************************************************/ this.hello = function() { alert('hello'); } } </script> </head><body> <div id="one">click me</div> <div id="two">click me</div> <script type="text/javascript"> var t = new HelloObject(document.getElementById('one')); var t = new HelloObject(document.getElementById('two')); </script> </body></html> In order to achive the same result I could simply replace the code //Appending click event to show the hello window AppendEvent(div_container, 'click', function() { helloobjs[id].hello(); //THIS WORKS! }); with this code: //Appending click event to show the hello window var me = this; AppendEvent(div_container, 'click', function() { me.hello(); //THIS WORKS TOO AND THE GLOBAL helloobjs ARRAY BECOMES SUPEFLOUS! }); thus would make the helloobjs array superflous. My question is: does this 2nd option in your opinion create memoy leaks on IE or strange cicular references that might lead to browsers going slow or to break??? I don't know how to explain, but coming from a background as a C/C++ coder, doing in this 2nd way sounds like a some sort of circular reference that might break memory at some point. I also read on internet about the IE closures memory leak issue http://jibbering.com/faq/faq_notes/closures.html (I don't know if it was fixed in IE7 and if yes, I hope it does not come out again in IE8). Thanks

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Chaining CSS classes in IE6 - Trying to find a jQuery solution?

- by Mike Baxter

Right, perhaps I ask the impossible? I consider myself fairly new to Javscript and jQuery, but that being said, I have written some fairly complex code recently so I am definitely getting there... however I am now possed with a rather interesting issue at my current freelance contract. The previous web coder has taken a Grid-960 approach to the HTML and as a result has used chained classes to style many of the elements. The example below is typical of what can be found in the code: <div class='blocks four-col-1 orange highlight'>Some content</div> And in the css there will be different declarations for: (not actual css... but close enough) .blocks {margin-right:10px;} .orange {background-image:url(someimage.jpg);} .highlight {font-weight:bold;} .four-col-1 {width:300px;} and to make matters worse... this is in the CSS: .blocks.orange.highlight {background-colour:#dd00ff;} Anyone not familiar with this particular bug can read more on it here: http://www.ryanbrill.com/archives/multiple-classes-in-ie/ it is very real and very annoying. Without wanting to go into the merrits of not chaining classes (I told them this, but it is no longer feasible to change their approach... 100 hand coded pages into a 150 page website, no CMS... sigh) and without the luxury of being able to change the way these blocks are styled... can anyone advise me on the complexity and benefits between any of my below proposed approaches or possible other options that would adequately solve this problem. Potential Solution 1 Using conditional comments I am considering loading a jquery script only for IE6 that: Reads the class of all divs in a certain section of the page and pushes to an array creates empty boxes off screen with only one of the classes applied at a time Reads the applied CSS values for each box Re-applies these styles to the individual box, somehow bearing in mind the order in which they are called and overwriting conflicting instructions as required Potential Solution 2 read the class of all divs in a certain section of the page and push to an array Scan the document for links to style sheets Ajax grab the stylesheets and traverse looking for matching names to those in class array Apply styles as needed Potential Solution 3 Create an IE6 only stylesheet containing the exact style to be applied as a unique name (ie: class='blocks orange highlight' becomes class='blocks-orange-highlight') Traverse the document in IE6 and convert all spaces in class declarations to hyphens and reapply classes based on new style name Summary: Solution 1 allows the people at this company to apply any styles in the future and the script will adjust as needed. However it does not allow for the chained style to be added, only the individual style... it is also processor intensive and time consuming, but also the most likely to be converted into a plugin that could be used the world over Solution 2 is a potential nightmare to code. But again will allow for an endless number of updates without breaking Solution 3 will require someone at the companty to hardcode the new styles every time they make a change, and if they don't, IE6 will break. Ironically the site, whilst needing to conform to IE6 in a limited manner, does not need to run wihtout javascript (they've made the call... have JS or go away), so consider all jQuery and JS solutions to be 'game on'. Did I mention how much i hate IE6? Anyway... any thoughts or comments would be appreciated. I will continue to develop my own solution and if I discover one that can be turned into a jQuery plugin I will post it here in the comments. Regards, Mike.

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If 'Architect' is a dirty word - what's the alternative; when not everyone can actually design a goo

- by Andras Zoltan

Now - I'm a developer first and foremost; but whenever I sit down to work on a big project with lots of interlinking components and areas, I will forward-plan my interfaces, base classes etc as best I can - putting on my Architect hat. For a few weeks I've been doing this for a huge project - designing whole swathes of interfaces etc for a business-wide platform that we're developing. The basic structure is a couple of big projects that consists of service and data interfaces, with some basic implementations of all of these. On their own, these assemblies are useless though, as they are simply intended intended as a scaffold on which to build a business-specific implementation (we have a lot of businesses). Therefore, the design of the core platform is absolutely crucial, since consumers of the system are not intended to know which implementation they are actually using. In the past it's not worked so well, but after a few proof-of-concepts and R&D projects this new platform is now growing nicely and is already proving itself. Then somebody else gets involved in the project - he's a TDD man who sees code-level architecture as an irrelevance and is definitely from the camp that 'architect' is a dirty word - I should add that our working relationship is very good despite this :) He's open about the fact that he can't architect in advance and obviously TDD really helps him because it allows him to evolve his systems over time. That I get, and totally understand; but it means that his coding style, basically, doesn't seem to be able to honour the architecture that I've been putting in place. Now don't get me wrong - he's an awesome coder; but the other day he needed to extend one of his components (an implementation of a core interface) to bring in an extra implementation-specific dependency; and in doing so he extended the core interface as well as his implementation (he uses ReSharper), thus breaking the independence of the whole interface. When I pointed out his error to him, he was dismayed. Being test-first, all that mattered to him was that he'd made his tests pass, and just said 'well, I need that dependency, so can't we put it in?'. Of course we could put it in, but I was frustrated that he couldn't see that refactoring the generic interface to incorporate an implementation-specific feature was just wrong! But it is all very Charlie Brown to him (you know the sound the adults make when they're talking to the children) - as far as he's concerned we don't need to worry about it because we can always refactor. The problem is, the culture of test-write-refactor is all very well and good - but not when you're dealing with a platform that is going to be shared out among so many projects that you could never get them all in one place to make the refactorings work. In my opinion, sometimes you actually have to think about what you're doing, and not just let nature take its course. Am I simply fulfilling the role of Architect as a dirty word here? I believe that architecture is important and should be thought about before code gets written; unless it's a particularly small project. But when you're working in a team of people who don't think that way, or even can't think that way how can you actually get this across? Is it a case of simply making the architecture off-limits to changes by other people? I don't want to start having bloody committees just to be able to grow the system; but equally I don't want to be the only one responsible for it all. Do you think the architect role is a waste of time? Is it at odds with TDD and other practises? Can this mix of different practises be made to work, or should I just be a lot less precious (and in so doing allow a generic platform become useless!)? Or do I just lay down the law? Any ideas/experiences/views gratefully received.

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