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  • log file is not getting created using JDK logging with Commons-logging

    - by Saida Dhanavath
    When I run the TestJcLLoggingService class log messages are coming to Console but no log file is created, please help me if you know the answer. two source files are pasted below. TestJcLLoggingService.java package com.amadeus.psp.pasd.logging; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.stereotype.Service; @Service public class TestJCLLoggingService { private static Log psp_log = LogFactory.getLog(TestJCLLoggingService.class); public static String testJCLLoggingServiceMethod(){ psp_log.info("start of method testJCLLoggingServiceMethod class TestJCLLoggingService"); psp_log.info("start of method testJCLLoggingServiceMethod class TestJCLLoggingService"); return "This is a test string for JCLLogging"; } public static void main(String[] args){ testJCLLoggingServiceMethod(); } } logging.properties handlers = java.util.logging.ConsoleHandler, java.util.logging.FileHandler .level = ALL com.amadeus.psp.pasd.level=ALL java.util.logging.ConsoleHandler.level = ALL java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter java.util.logging.FileHandler.pattern = %h/java%u.log java.util.logging.FileHandler.level=ALL java.util.logging.FileHandler.limit=50000 java.util.logging.FileHandler.count=1 java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter java.util.logging.FileHandler.append=true Thanks in advance.

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  • NPE with logging while launching webstart on jre7 update 40

    - by atulsm
    My application was running fine until I upgraded my jre to 7u40. When my application is initializing, it's doing Logger.getLogger("ClassName"), and I'm getting the following exception. java.lang.ExceptionInInitializerError at java.util.logging.Logger.demandLogger(Unknown Source) at java.util.logging.Logger.getLogger(Unknown Source) at com.company.Application.Applet.<clinit>(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.sun.javaws.Launcher.executeApplication(Unknown Source) at com.sun.javaws.Launcher.executeMainClass(Unknown Source) at com.sun.javaws.Launcher.doLaunchApp(Unknown Source) at com.sun.javaws.Launcher.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at java.util.logging.Logger.setParent(Unknown Source) at java.util.logging.LogManager$6.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.util.logging.LogManager.doSetParent(Unknown Source) at java.util.logging.LogManager.access$1100(Unknown Source) at java.util.logging.LogManager$LogNode.walkAndSetParent(Unknown Source) at java.util.logging.LogManager$LoggerContext.addLocalLogger(Unknown Source) at java.util.logging.LogManager$LoggerContext.addLocalLogger(Unknown Source) at java.util.logging.LogManager.addLogger(Unknown Source) at java.util.logging.LogManager$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.util.logging.LogManager.<clinit>(Unknown Source) The exception is coming from this line: private static Logger logger = Logger.getLogger(Applet.class.getName()); Could it be because of any sideeffects with fix http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8017174 ? A workaround is to open the java control center and enable logging. This is a concern since by default "Enable Logging" is unchecked. If I select "Enable Logging", the application starts fine.

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  • Python: combine logging and wx so that logging stream is redirectet to stdout/stderr frame

    - by Uwe
    Here's the thing: I'm trying to combine the logging module with wx.App()'s redirect feature. My intention is to log to a file AND to stderr. But I want stderr/stdout redirected to a separate frame as is the feature of wx.App. My test code: import logging import wx class MyFrame(wx.Frame): def __init__(self): self.logger = logging.getLogger("main.MyFrame") wx.Frame.__init__(self, parent = None, id = wx.ID_ANY, title = "MyFrame") self.logger.debug("MyFrame.__init__() called.") def OnExit(self): self.logger.debug("MyFrame.OnExit() called.") class MyApp(wx.App): def __init__(self, redirect): self.logger = logging.getLogger("main.MyApp") wx.App.__init__(self, redirect = redirect) self.logger.debug("MyApp.__init__() called.") def OnInit(self): self.frame = MyFrame() self.frame.Show() self.SetTopWindow(self.frame) self.logger.debug("MyApp.OnInit() called.") return True def OnExit(self): self.logger.debug("MyApp.OnExit() called.") def main(): logger_formatter = logging.Formatter("%(name)s\t%(levelname)s\t%(message)s") logger_stream_handler = logging.StreamHandler() logger_stream_handler.setLevel(logging.INFO) logger_stream_handler.setFormatter(logger_formatter) logger_file_handler = logging.FileHandler("test.log", mode = "w") logger_file_handler.setLevel(logging.DEBUG) logger_file_handler.setFormatter(logger_formatter) logger = logging.getLogger("main") logger.setLevel(logging.DEBUG) logger.addHandler(logger_stream_handler) logger.addHandler(logger_file_handler) logger.info("Logger configured.") app = MyApp(redirect = True) logger.debug("Created instance of MyApp. Calling MainLoop().") app.MainLoop() logger.debug("MainLoop() ended.") logger.info("Exiting program.") return 0 if (__name__ == "__main__"): main() Expected behavior is: - a file is created named test.log - the file contains logging messages with level DEBUG and INFO/ERROR/WARNING/CRITICAL - messages from type INFO and ERROR/WARNING/CRITICAL are ether shown on the console or in a separate frame, depending on where they are created - logger messages that are not inside MyApp or MyFrame are displayed at the console - logger messages from inside MyApp or MyFrame are shown in a separate frame Actual behavior is: - The file is created and contains: main INFO Logger configured. main.MyFrame DEBUG MyFrame.__init__() called. main.MyFrame INFO MyFrame.__init__() called. main.MyApp DEBUG MyApp.OnInit() called. main.MyApp INFO MyApp.OnInit() called. main.MyApp DEBUG MyApp.__init__() called. main DEBUG Created instance of MyApp. Calling MainLoop(). main.MyApp DEBUG MyApp.OnExit() called. main DEBUG MainLoop() ended. main INFO Exiting program. - Console output is: main INFO Logger configured. main.MyFrame INFO MyFrame.__init__() called. main.MyApp INFO MyApp.OnInit() called. main INFO Exiting program. - No separate frame is opened, although the lines main.MyFrame INFO MyFrame.__init__() called. main.MyApp INFO MyApp.OnInit() called. shouldget displayed within a frame and not on the console. It seems to me that wx.App can't redirect stderr to a frame as soon as a logger instance uses stderr as output. wxPythons Docs claim the wanted behavior though, see here. Any ideas? Uwe

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  • Logging with Quartz.net

    - by Young Ninja
    I will shamelessly state that I have little experience with Log4Net... I only just installed it, but it won't capture log events from Quartz.net, which is a scheduling library. Apparently Quartz.net uses Commons Logging and that needs to be configured to point to my Log4Net settings. Unfortunately, it doesn't seem to work. Help is appreciated: <configSections> ... <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /> <section name="quartz" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" /> <section name="commonLogging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging"/> </configSections> <!-- Log4net error handling --> <log4net> <appender name="LogFileAppender" type="log4net.Appender.FileAppender"> <param name="File" value="Admin/LabSlice.log" /> <param name="AppendToFile" value="true" /> <layout type="log4net.Layout.PatternLayout"> <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" /> </layout> </appender> <root> <level value="INFO" /> <appender-ref ref="LogFileAppender" /> </root> </log4net> <!-- Commons logging (Quart.net logs) --> <commonLogging> <logging> <factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4net"> <arg key="configType" value="INLINE" /> </factoryAdapter> </logging> </commonLogging>

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  • Redirect logging output using custom logging handler

    - by mridang
    Hi Guys, I'm using a module in my python app that writes a lot a of messages using the logging module. Initially I was using this in a console application and it was pretty easy to get the logging output to display on the console using a console handler. Now I've developed a GUI version of my app using wxPython and I'd like to display all the logging output to a custom control — a multi-line textCtrl. Is there a way i could create a custom logging handler so i can redirect all the logging output there and display the logging messages wherever/however I want — in this case, a wxPython app. Thanks

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  • Design patterns to avoiding breaking the SRP while performing heavy data logging

    - by Kazark
    A class that performs both computations and data logging seems to have at least two responsibilities. Given a system for which the specifications require heavy data logging, what kind of design patterns or architectural patterns can be used to avoid bloating all the classes with logging calls every time they compute something? The decorator pattern be used (e.g. Interpolator decorated to LoggingInterpolator), but it seems that would result in a situation hardly more desirable in which almost every major class would need to be decorated with logging.

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  • Rules and advice for logging?

    - by Nick Rosencrantz
    In my organization we've put together some rules / guildelines about logging that I would like to know if you can add to or comment. We use Java but you may comment in general about loggin - rules and advice Use the correct logging level ERROR: Something has gone very wrong and need fixing immediately WARNING: The process can continue without fixing. The application should tolerate this level but the warning should always get investigated. INFO: Information that an important process is finished DEBUG. Is only used during development Make sure that you know what you're logging. Avoid that the logging influences the behavior of the application The function of the logging should be to write messages in the log. Log messages should be descriptive, clear, short and concise. There is not much use of a nonsense message when troubleshooting. Put the right properties in log4j Put in that the right method and class is written automatically. Example: Datedfile -web log4j.rootLogger=ERROR, DATEDFILE log4j.logger.org.springframework=INFO log4j.logger.waffle=ERROR log4j.logger.se.prv=INFO log4j.logger.se.prv.common.mvc=INFO log4j.logger.se.prv.omklassning=DEBUG log4j.appender.DATEDFILE=biz.minaret.log4j.DatedFileAppender log4j.appender.DATEDFILE.layout=org.apache.log4j.PatternLayout log4j.appender.DATEDFILE.layout.ConversionPattern=%d{HH:mm:ss,SSS} %-5p [%C{1}.%M] - %m%n log4j.appender.DATEDFILE.Prefix=omklassning. log4j.appender.DATEDFILE.Suffix=.log log4j.appender.DATEDFILE.Directory=//localhost/WebSphereLog/omklassning/ Log value. Please log values from the application. Log prefix. State which part of the application it is that the logging is written from, preferably with something for the project agreed prefix e.g. PANDORA_DB The amount of text. Be careful so that there is not too much logging text. It can influence the performance of the app. Loggning format: -There are several variants and methods to use with log4j but we would like a uniform use of the following format, when we log at exceptions: logger.error("PANDORA_DB2: Fel vid hämtning av frist i TP210_RAPPORTFRIST", e); In the example above it is assumed that we have set log4j properties so that it automatically write the class and the method. Always use logger and not the following: System.out.println(), System.err.println(), e.printStackTrace() If the web app uses our framework you can get very detailed error information from EJB, if using try-catch in the handler and logging according to the model above: In our project we use this conversion pattern with which method and class names are written out automatically . Here we use two different pattents for console and for datedfileappender: log4j.appender.CONSOLE.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n log4j.appender.DATEDFILE.layout.ConversionPattern=%d [%t] %-5p %c - %m%n In both the examples above method and class wioll be written out. In the console row number will also be written our. toString() Please have a toString() for every object. EX: @Override public String toString() { StringBuilder sb = new StringBuilder(); sb.append(" DwfInformation [ "); sb.append("cc: ").append(cc); sb.append("pn: ").append(pn); sb.append("kc: ").append(kc); sb.append("numberOfPages: ").append(numberOfPages); sb.append("publicationDate: ").append(publicationDate); sb.append("version: ").append(version); sb.append(" ]"); return sb.toString(); } instead of special method which make these outputs public void printAll() { logger.info("inbet: " + getInbetInput()); logger.info("betdat: " + betdat); logger.info("betid: " + betid); logger.info("send: " + send); logger.info("appr: " + appr); logger.info("rereg: " + rereg); logger.info("NY: " + ny); logger.info("CNT: " + cnt); } So is there anything you can add, comment or find questionable with these ways of using the logging? Feel free to answer or comment even if it is not related to Java, Java and log4j is just an implementation of how this is reasoned.

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  • PHP 5.3 Not Logging

    - by BHare
    I have set error_log = "/var/log/apache2/php_errors.log" and made sure errors were being logged. I have set the file to be owned by the www-data owner and group and even set the permissions to 777. I have confirmed with phpinfo() that the error_log is correctly set, however The logging still only happens in my vhost's apache error log. The following is my php.ini for 5.3.3-7 on Debian Squeeze Apache 2: The top is populated with comments on what I have been interested, or have changed. I have deleted all comments to save space. Full versions here: http://pastebin.com/AhWLiQBR [PHP] ;short_open_tag = On ;allow_call_time_pass_reference = On ;error_reporting = E_ALL & ~E_NOTICE & ~E_DEPRECATED ;display_errors = On ;display_startup_errors = Off ;log_errors = On ;html_errors = On error_log = "/var/log/apache2/php_errors.log" engine = On short_open_tag = On asp_tags = Off precision = 14 y2k_compliance = On output_buffering = 4096 zlib.output_compression = Off implicit_flush = Off unserialize_callback_func = serialize_precision = 100 allow_call_time_pass_reference = On safe_mode = Off safe_mode_gid = Off safe_mode_include_dir = safe_mode_exec_dir = safe_mode_allowed_env_vars = PHP_ safe_mode_protected_env_vars = LD_LIBRARY_PATH disable_functions = disable_classes = expose_php = On max_execution_time = 30 max_input_time = 60 memory_limit = 128M error_reporting = E_ALL & ~E_NOTICE & ~E_DEPRECATED display_errors = On display_startup_errors = Off log_errors = On log_errors_max_len = 1024 ignore_repeated_errors = Off ignore_repeated_source = Off report_memleaks = On track_errors = Off html_errors = On variables_order = "GPCS" request_order = "GPC" register_globals = Off register_long_arrays = Off register_argc_argv = Off auto_globals_jit = On post_max_size = 100M magic_quotes_gpc = Off magic_quotes_runtime = Off magic_quotes_sybase = Off auto_prepend_file = auto_append_file = default_mimetype = "text/html" doc_root = user_dir = enable_dl = Off file_uploads = On upload_tmp_dir = /tmp upload_max_filesize = 100M max_file_uploads = 20 allow_url_fopen = On allow_url_include = Off default_socket_timeout = 60 [Date] [filter] [iconv] [intl] [sqlite] [sqlite3] [Pcre] [Pdo] [Pdo_mysql] pdo_mysql.cache_size = 2000 pdo_mysql.default_socket= [Phar] [Syslog] define_syslog_variables = Off [mail function] SMTP = localhost smtp_port = 25 mail.add_x_header = On [SQL] sql.safe_mode = Off [ODBC] odbc.allow_persistent = On odbc.check_persistent = On odbc.max_persistent = -1 odbc.max_links = -1 odbc.defaultlrl = 4096 odbc.defaultbinmode = 1 [Interbase] ibase.allow_persistent = 1 ibase.max_persistent = -1 ibase.max_links = -1 ibase.timestampformat = "%Y-%m-%d %H:%M:%S" ibase.dateformat = "%Y-%m-%d" ibase.timeformat = "%H:%M:%S" [MySQL] mysql.allow_local_infile = On mysql.allow_persistent = On mysql.cache_size = 2000 mysql.max_persistent = -1 mysql.max_links = -1 mysql.default_port = mysql.default_socket = mysql.default_host = mysql.default_user = mysql.default_password = mysql.connect_timeout = 60 mysql.trace_mode = Off [MySQLi] mysqli.max_persistent = -1 mysqli.allow_persistent = On mysqli.max_links = -1 mysqli.cache_size = 2000 mysqli.default_port = 3306 mysqli.default_socket = mysqli.default_host = mysqli.default_user = mysqli.default_pw = mysqli.reconnect = Off [mysqlnd] mysqlnd.collect_statistics = On mysqlnd.collect_memory_statistics = Off [OCI8] [PostgresSQL] pgsql.allow_persistent = On pgsql.auto_reset_persistent = Off pgsql.max_persistent = -1 pgsql.max_links = -1 pgsql.ignore_notice = 0 pgsql.log_notice = 0 [Sybase-CT] sybct.allow_persistent = On sybct.max_persistent = -1 sybct.max_links = -1 sybct.min_server_severity = 10 sybct.min_client_severity = 10 [bcmath] bcmath.scale = 0 [browscap] [Session] session.save_handler = files session.use_cookies = 1 session.use_only_cookies = 1 session.name = PHPSESSID session.auto_start = 0 session.cookie_lifetime = 0 session.cookie_path = / session.cookie_domain = session.cookie_httponly = session.serialize_handler = php session.gc_probability = 0 session.gc_divisor = 1000 session.gc_maxlifetime = 1440 session.bug_compat_42 = Off session.bug_compat_warn = Off session.referer_check = session.entropy_length = 0 session.cache_limiter = nocache session.cache_expire = 180 session.use_trans_sid = 0 session.hash_function = 0 session.hash_bits_per_character = 5 url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry" [MSSQL] mssql.allow_persistent = On mssql.max_persistent = -1 mssql.max_links = -1 mssql.min_error_severity = 10 mssql.min_message_severity = 10 mssql.compatability_mode = Off mssql.secure_connection = Off [Assertion] [COM] [mbstring] [gd] [exif] [Tidy] tidy.clean_output = Off [soap] soap.wsdl_cache_enabled=1 soap.wsdl_cache_dir="/tmp" soap.wsdl_cache_ttl=86400 soap.wsdl_cache_limit = 5 [sysvshm] [ldap] ldap.max_links = -1 [mcrypt] [dba]

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  • How to send java.util.logging to log4j?

    - by matt b
    I have an existing application which does all of its logging against log4j. We use a number of other libraries that either also use log4j, or log against Commons Logging, which ends up using log4j under the covers in our environment. One of our dependencies even logs against slf4j, which also works fine since it eventually delegates to log4j as well. Now, I'd like to add ehcache to this application for some caching needs. Previous versions of ehcache used commons-logging, which would have worked perfectly in this scenario, but as of version 1.6-beta1 they have removed the dependency on commons-logging and replaced it with java.util.logging instead. Not really being familiar with the built-in JDK logging available with java.util.logging, is there an easy way to have any log messages sent to JUL logged against log4j, so I can use my existing configuration and set up for any logging coming from ehcache? Looking at the javadocs for JUL, it looks like I could set up a bunch of environment variables to change which LogManager implementation is used, and perhaps use that to wrap log4j Loggers in the JUL Logger class. Is this the correct approach? Kind of ironic that a library's use of built-in JDK logging would cause such a headache when (most of) the rest of the world is using 3rd party libraries instead.

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  • .NET Single Line Logging (ala Trace.Write/WriteLine) using Instrumentation.Logging

    - by KnownColor
    Hello Everyone, My question is whether it is possible to get line/multiline (very unsure of correct term for this) behaviour of the Trace.Write and Trace.WriteLine methods but using the Microsoft Instrumentation Logging framework in .NET 2.0. Desired Output Hello World! Oh Hai. What I Currently Have Trace.Write("Hello "); Trace.WriteLine("World!"); Trace.Write("Oh Hai."); I would prefer to use instrumentation to log rather than writing to a log file using Debug.Trace. EDIT: By Instrumentation Logging I mean using a 'loggingConfiguration' block in my App.config and writing Log Entries using using Microsoft.Practices.EnterpriseLibrary.Logging.Logger.Write(LogEntry logEntry); Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=2.0.0.0 for example. Ta, KnownColor

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  • No Commons Logging in Android?

    - by Joe Boese
    Hello all, I have a pretty big library I developed specifically for use in my Android Application. However business logic itself has no dependency on Android. To preserve that, I used Commons Logging throughout this library and it's respective JUnit tests (which I run in Eclipse). However now that I am starting to integrate it into an Activity which I launch on Android, I am unable to get my logging to work. In Eclipse/JUnit, I had simply pulled in log4j's jar file as well as a log4j.properties file. This doesn't seem to work when deploying to a device. After struggling with attempting to get that to work for several hours, I gave up and tried replacing all my commons logging stuff with android.util.Log. Now I can log on the device.. but all JUnit tests are broken. When any JUnit tries to log using android.util.Log, it throws a RuntimeException 'Stub!'. I would prefer to revert to my commons logging approach.. if anyone can help with that.. otherwise.. what can I do to get my JUnit test cases running using 'android.util.Log'? Many thanks in advance.. I've spent more than a few hours on this and I'd like to move on to writing real code again! Joe

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  • Tomcat6 ignores logging.properties partially

    - by Bob
    I'm using Tomcat 6, and this is my logging.properties: handlers = org.apache.juli.FileHandler, java.util.logging.ConsoleHandler .level=FINE org.apache.catalina.core.ApplicationContext.level = OFF org.apache.juli.FileHandler.level = ALL org.apache.juli.FileHandler.directory = ${catalina.base}/logs org.apache.juli.FileHandler.prefix = mylog. java.util.logging.ConsoleHandler.level = FINE java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter On the one hand, Tomcat seems to read this file, as it correctly saves the logfiles with the prefix "mylog" and prints only messages with log-level FINE and above. On the other hand, it keeps on writing log messages like this: Jun 8, 2010 9:53:30 PM org.apache.catalina.core.ApplicationContext log SEVERE: Error writing messages ClientAbortException: java.net.SocketException: Broken pipe I actually wanted to suppress all log messages from this class, as they flood my logfile, and the error is irrelevant for me. So why is the following line ignored? org.apache.catalina.core.ApplicationContext.level = OFF Is there any other way to suppress the log output of this class?

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  • SLF4J, Common Logging, console output

    - by Mauricio Scheffer
    I have this 3rd party library that has: slf4j-api-1.5.5.jar slf4j-jdk14-1.5.5.jar jcl-over-slf4j-1.5.5.jar I want to write some tests against this library and see its log output, and I don't want to add any more logging libraries (no log4j or anything else). I understand that SLF4J and Common Logging are both logging abstractions so I probably need to write my own simple concrete logger (or maybe not, since jcl-over-slf4j includes org.apache.commons.logging.impl.SimpleLog?). If so, what interfaces should I implement, and more importantly, how do I set up SL4J/Common Logging to use my logger in my test? I read in the SLF4J docs that I have to modify the StaticLoggerBinder class... does that really mean that I actually have to download SLF4J sources, modify the class and recompile it?

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  • Logging library for (c++) games

    - by Klaim
    I know a lot of logging libraries but didn't test a lot of them. (GoogleLog, Pantheios, the coming boost::log library...) In games, especially in remote multiplayer and multithreaded games, logging is vital to debugging, even if you remove all logs in the end. Let's say I'm making a PC game (not console) that needs logs (multiplayer and multithreaded and/or multiprocess) and I have good reasons for looking for a library for logging (like, I don't have time or I'm not confident in my ability to write one correctly for my case). Assuming that I need : performance ease of use (allow streaming or formating or something like that) reliable (don't leak or crash!) cross-platform (at least Windows, MacOSX, Linux/Ubuntu) Wich logging library would you recommand? Currently, I think that boost::log is the most flexible one (you can even log to remotely!), but have not good performance. Pantheios is often cited but I don't have comparison points on performance and usage. I've used my own lib for a long time but I know it don't manage multithreading so it's a big problem, even if it's fast enough. Google Log seems interesting, I just need to test it but if you already have compared those libs and more, your advice might be of good use. Games are often performance demanding while complex to debug so it would be good to know logging libraries that, in our specific case, have clear advantages.

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  • Logging in JSON Effect on Performance

    - by Pius
    I see more and more articles about logging in JSON. You can also find one on NodeJS blog. Why does everyone like it so much? I can only see more operations getting involved: A couple new objects being created. Stringifying objects, which either involves calculating string length or multiple string allocations. GCing all the crap that was created. Is there any test on performance when using JSON logging and regular string logging? Do people use JSON (for logging) in enterprise projects?

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  • how to configure my own formatter in java logging property file

    - by loudiyimo
    For my java project, i am using the java logging api. I want to log everything using a property file. Before using this file (log.properties), I configured my onwn fommater in the java code. (see below) Now I want to configure my own fomater in the propertie file, instead of the java code. does someone know how to do that ? Formatter formatter = new Formatter() { @Override public String format(LogRecord arg0) { StringBuilder b = new StringBuilder(); b.append(new Date()); b.append(" "); b.append(arg0.getSourceClassName()); b.append(" "); b.append(arg0.getSourceMethodName()); b.append(" "); b.append(arg0.getLevel()); b.append(" "); b.append(arg0.getMessage()); b.append(System.getProperty("line.separator")); return b.toString(); } }; fomatter in the java code ..... ..... java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter java.util.logging.FileHandler.level=WARNING java.util.logging.??? = how can i configure my own formater in the property files with this information: data, clasename, methodename, level .etc.** formatter in de log.proprties

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  • SQL SERVER – A Quick Look at Logging and Ideas around Logging

    - by pinaldave
    This blog post is written in response to the T-SQL Tuesday post on Logging. When someone talks about logging, personally I get lots of ideas about it. I have seen logging as a very generic term. Let me ask you this question first before I continue writing about logging. What is the first thing comes to your mind when you hear word “Logging”? Now ask the same question to the guy standing next to you. I am pretty confident that you will get  a different answer from different people. I decided to do this activity and asked 5 SQL Server person the same question. Question: What is the first thing comes to your mind when you hear the word “Logging”? Strange enough I got a different answer every single time. Let me just list what answer I got from my friends. Let us go over them one by one. Output Clause The very first person replied output clause. Pretty interesting answer to start with. I see what exactly he was thinking. SQL Server 2005 has introduced a new OUTPUT clause. OUTPUT clause has access to inserted and deleted tables (virtual tables) just like triggers. OUTPUT clause can be used to return values to client clause. OUTPUT clause can be used with INSERT, UPDATE, or DELETE to identify the actual rows affected by these statements. Here are some references for Output Clause: OUTPUT Clause Example and Explanation with INSERT, UPDATE, DELETE Reasons for Using Output Clause – Quiz Tips from the SQL Joes 2 Pros Development Series – Output Clause in Simple Examples Error Logs I was expecting someone to mention Error logs when it is about logging. The error log is the most looked place when there is any error either with the application or there is an error with the operating system. I have kept the policy to check my server’s error log every day. The reason is simple – enough time in my career I have figured out that when I am looking at error logs I find something which I was not expecting. There are cases, when I noticed errors in the error log and I fixed them before end user notices it. Other common practices I always tell my DBA friends to do is that when any error happens they should find relevant entries in the error logs and document the same. It is quite possible that they will see the same error in the error log  and able to fix the error based on the knowledge base which they have created. There can be many different kinds of error log files exists in SQL Server as well – 1) SQL Server Error Logs 2) Windows Event Log 3) SQL Server Agent Log 4) SQL Server Profile Log 5) SQL Server Setup Log etc. Here are some references for Error Logs: Recycle Error Log – Create New Log file without Server Restart SQL Error Messages Change Data Capture I got surprised with this answer. I think more than the answer I was surprised by the person who had answered me this one. I always thought he was expert in HTML, JavaScript but I guess, one should never assume about others. Indeed one of the cool logging feature is Change Data Capture. Change Data Capture records INSERTs, UPDATEs, and DELETEs applied to SQL Server tables, and makes a record available of what changed, where, and when, in simple relational ‘change tables’ rather than in an esoteric chopped salad of XML. These change tables contain columns that reflect the column structure of the source table you have chosen to track, along with the metadata needed to understand the changes that have been made. Here are some references for Change Data Capture: Introduction to Change Data Capture (CDC) in SQL Server 2008 Tuning the Performance of Change Data Capture in SQL Server 2008 Download Script of Change Data Capture (CDC) CDC and TRUNCATE – Cannot truncate table because it is published for replication or enabled for Change Data Capture Dynamic Management View (DMV) I like this answer. If asked I would have not come up with DMV right away but in the spirit of the original question, I think DMV does log the data. DMV logs or stores or records the various data and activity on the SQL Server. Dynamic management views return server state information that can be used to monitor the health of a server instance, diagnose problems, and tune performance. One can get plethero of information from DMVs – High Availability Status, Query Executions Details, SQL Server Resources Status etc. Here are some references for Dynamic Management View (DMV): SQL SERVER – Denali – DMV Enhancement – sys.dm_exec_query_stats – New Columns DMV – sys.dm_os_windows_info – Information about Operating System DMV – sys.dm_os_wait_stats Explanation – Wait Type – Day 3 of 28 DMV sys.dm_exec_describe_first_result_set_for_object – Describes the First Result Metadata for the Module Transaction Log Impact Detection Using DMV – dm_tran_database_transactions Log Files I almost flipped with this final answer from my friend. This should be probably the first answer. Yes, indeed log file logs the SQL Server activities. One can write infinite things about log file. SQL Server uses log file with the extension .ldf to manage transactions and maintain database integrity. Log file ensures that valid data is written out to database and system is in a consistent state. Log files are extremely useful in case of the database failures as with the help of full backup file database can be brought in the desired state (point in time recovery is also possible). SQL Server database has three recovery models – 1) Simple, 2) Full and 3) Bulk Logged. Each of the model uses the .ldf file for performing various activities. It is very important to take the backup of the log files (along with full backup) as one never knows when backup of the log file come into the action and save the day! How to Stop Growing Log File Too Big Reduce the Virtual Log Files (VLFs) from LDF file Log File Growing for Model Database – model Database Log File Grew Too Big master Database Log File Grew Too Big SHRINKFILE and TRUNCATE Log File in SQL Server 2008 Can I just say I loved this month’s T-SQL Tuesday Question. It really provoked very interesting conversation around me. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Optimization, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • how to log digester with apache commons?

    - by Bruce
    Hi all I'm having trouble getting digester to log anything. I'd be hugely grateful for any light anyone can shed. In my code I'm doing this: Digester digester = new Digester(); .. some digester set up stuff // What on earth should go in here???? digester.setLogger(LogFactory.getLog("org.apache.commons.logging.Log")); I have a commons-logging.properties file in my classpath as follows: org.apache.commons.logging.Log=org.apache.commons.logging.impl.SimpleLog org.apache.commons.logging.simplelog.log.org.apache.commons.digester.Digester=debug org.apache.commons.logging.simplelog.log.org.apache.commons.digester.Digester.sax=info I just get no debug info at all.. Thanks for your help!

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  • Problem with Apache Commons Id UUID Version 1 generation

    - by Pekka Mattila
    My problem is to generate version 1 UUIDs. We use Jetty 6.x, Maven (to start Jetty among other things) and Apache Commons ID (to generate UUID version 1 from the current time). Apache Commons ID requires a configuration file that is told to the JVM, using a parameter, e.g. 'org.apache.commons.id.uuid.config.resource.filename=commons-id-uuid.xml'. I checked the Apache Commons ID code and it tries to find the file from the classpath. Jetty's documentation states that WEB-INF/lib and WEB-INF/classes are in the classpath. The 'commons-id-uuid.xml' can be found from the deployed war file from the root of WEB-INF/classes directory but Jetty cannot load it: Message: java.lang.RuntimeException: java.lang.IllegalStateException: commons-id-uuid.xml loaded as system resource is null Jetty was started using the following command: mvn jetty:run -Dorg.apache.commons.id.uuid.config.resource.filename=commons-id-uuid.xml Any idea what is going wrong? We just need to generate UUID version 1 identifiers. Any suggestions?

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  • Best practices for logging and tracing in .NET

    - by Levidad
    I've been reading a lot about tracing and logging, trying to find some golden rule for best practices in the matter, but there isn't any. People say that good programmers produce good tracing, but put it that way and it has to come from experience. I've also read similar questions in here and through the internet and they are not really the same thing I am asking or do not have a satisfying answer, maybe because the questions lack some detail. So, folks say that tracing should sort of replicate the experience of debugging the application in cases where you can't attach a debugger. It should provide enough context so that you can see which path is taken at each control point in the application. Going deeper, you can even distinguish between tracing and event logging, in that "event logging is different from tracing in that it captures major states rather than detailed flow of control". Now, say I want to do my tracing and logging using only the standard .NET classes, those in the System.Diagnostics namespace. I figured that the TraceSource class is better for the job than the static Trace class, because I want to differentiate among the trace levels and using the TraceSource class I can pass in a parameter informing the event type, while using the Trace class I must use Trace.WriteLineIf and then verify things like SourceSwitch.TraceInformation and SourceSwitch.TraceErrors, and it doesn't even have properties like TraceVerbose or TraceStart. With all that in mind, would you consider a good practice to do as follows: Trace a "Start" event when begining a method, which should represent a single logical operation or a pipeline, along with a string representation of the parameter values passed in to the method. Trace an "Information" event when inserting an item into the database. Trace an "Information" event when taking one path or another in an important if/else statement. Trace a "Critical" or "Error" in a catch block depending on weather this is a recoverable error. Trace a "Stop" event when finishing the execution of the method. And also, please clarify when best to trace Verbose and Warning event types. If you have examples of code with nice trace/logging and are willing to share, that would be excelent. Note: I've found some good information here, but still not what I am looking for: http://msdn.microsoft.com/en-us/magazine/ff714589.aspx Thanks in advance!

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  • Problem Using POI To Set CellStyleProperty With HSSFCellUtil

    - by Alvin Sim
    I have a Java class which uses Apache POI to generate reports in Excel. When I run the Java class from my IDE or command prompt, I only see warning messages from LOG4J as below: log4j:WARN No appenders could be found for logger (org.apache.commons.beanutils.converters.BooleanConverter). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. Despite the warning messages, the report was generated successfully. But when I run it from my web app, which uses JSP and submits the form to a Servlet which calls the Java class, the Java class seems to have problems setting the style properties to the cell. Below are the Java code and also the stack trace. I'm testing this on a Standalone OC4J and the IDE which I'm using is Oracle's JDeveloper. And the Java JDK is 1.4.2. I've been looking high and low the whole day yesterday but can't seem to find out why. Code: region = new Region(1, (short) 1, 5, (short)2); sheet.addMergedRegion(region); HSSFRegionUtil.setBorderBottom( (short) 1, region, sheet, workBook ); Stack trace: 10/06/07 16:03:17 SvltRptProcessor ACTION=print_to_file RPT_CLASSNAME=com.reports.BP.DailySalesBudgetExcelRpt DES_TYPE=file DES_FORMAT=xls 10/06/07 16:03:17 rptFilename=/oracle/reports//20100607_160317_BP_DailySalesBudgetByPmgrp_OPR.xls 10/06/07 16:03:17 ReportRunner printToFile execute -> com.reports.BP.DailySalesBudgetExcelRpt 10/06/07 16:03:17 enter daily sales budget excel rpt -----> print() 10/06/07 16:03:18 Tutalii: C:\oc4j10gmy\j2ee\home\applib\poi-2.5.1.jar archive 10/06/07 16:03:19 org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:509) 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:285) 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:255) 10/06/07 16:03:19 at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:381) 10/06/07 16:03:19 at org.apache.commons.beanutils.ConvertUtilsBean.<init>(ConvertUtilsBean.java:157) 10/06/07 16:03:19 at org.apache.commons.beanutils.BeanUtilsBean.<init>(BeanUtilsBean.java:117) 10/06/07 16:03:19 at org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68) 10/06/07 16:03:19 at org.apache.commons.beanutils.ContextClassLoaderLocal.get(ContextClassLoaderLocal.java:153) 10/06/07 16:03:19 at org.apache.commons.beanutils.BeanUtilsBean.getInstance(BeanUtilsBean.java:80) 10/06/07 16:03:19 at org.apache.commons.beanutils.PropertyUtilsBean.getInstance(PropertyUtilsBean.java:114) 10/06/07 16:03:19 at org.apache.commons.beanutils.PropertyUtils.describe(PropertyUtils.java:209) 10/06/07 16:03:19 at org.apache.poi.hssf.usermodel.contrib.HSSFCellUtil.setCellStyleProperty(HSSFCellUtil.java:174) 10/06/07 16:03:19 at org.apache.poi.hssf.usermodel.contrib.HSSFRegionUtil. setBorderBottom(HSSFRegionUtil.java:153) 10/06/07 16:03:19 at com.reports.BP.DailySalesBudgetExcelRpt.setRegion(DailySalesBudgetExcelRpt.java:773) 10/06/07 16:03:19 at com.reports.BP.DailySalesBudgetExcelRpt.createHdr(DailySalesBudgetExcelRpt.java:308) 10/06/07 16:03:19 at com.reports.BP.DailySalesBudgetExcelRpt.start(DailySalesBudgetExcelRpt.java:272) 10/06/07 16:03:19 at com.reports.BP.DailySalesBudgetExcelRpt.print(DailySalesBudgetExcelRpt.java:222) 10/06/07 16:03:19 at com.servlet.RPT.ReportRunner.printToFile(ReportRunner.java:601) 10/06/07 16:03:19 at com.servlet.RPT.ReportRunner.doPrint(ReportRunner.java:302) 10/06/07 16:03:19 at com.servlet.RPT.ReportRunner.run(ReportRunner.java:270) 10/06/07 16:03:19 at java.lang.Thread.run(Thread.java:619) 10/06/07 16:03:19 Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:420) 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:502) 10/06/07 16:03:19 ... 20 more 10/06/07 16:03:19 Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category 10/06/07 16:03:19 at java.lang.Class.getDeclaredConstructors0(Native Method) 10/06/07 16:03:19 at java.lang.Class.privateGetDeclaredConstructors(Class. java:2389) 10/06/07 16:03:19 at java.lang.Class.getConstructor0(Class.java:2699) 10/06/07 16:03:19 at java.lang.Class.getConstructor(Class.java:1657) 10/06/07 16:03:19 at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:417) 10/06/07 16:03:19 ... 21 more 10/06/07 16:03:19 Caused by: java.lang.ClassNotFoundException: org.apache.log4j. Category 10/06/07 16:03:19 at java.net.URLClassLoader$1.run(URLClassLoader.java:202 ) 10/06/07 16:03:19 at java.security.AccessController.doPrivileged(Native Method) 10/06/07 16:03:19 at java.net.URLClassLoader.findClass(URLClassLoader.java :190) 10/06/07 16:03:19 at java.lang.ClassLoader.loadClass(ClassLoader.java:307) 10/06/07 16:03:19 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) 10/06/07 16:03:19 at java.lang.ClassLoader.loadClass(ClassLoader.java:248) 10/06/07 16:03:19 ... 26 more org.apache.commons.lang.exception.NestableException: Couldn't setCellStyleProperty. at org.apache.poi.hssf.usermodel.contrib.HSSFCellUtil.setCellStyleProperty(HSSFCellUtil.java:209) at org.apache.poi.hssf.usermodel.contrib.HSSFRegionUtil.setBorderBottom(HSSFRegionUtil.java:153) at com.reports.BP.DailySalesBudgetExcelRpt.setRegion(DailySalesBudgetExcelRpt.java:773) at com.reports.BP.DailySalesBudgetExcelRpt.createHdr(DailySalesBudgetExcelRpt.java:308) at com.reports.BP.DailySalesBudgetExcelRpt.start(DailySalesBudgetExcelRpt.java:272) at com.reports.BP.DailySalesBudgetExcelRpt.print(DailySalesBudgetExcelRpt.java:222) at com.servlet.RPT.ReportRunner.printToFile(ReportRunner.java:601) at com.servlet.RPT.ReportRunner.doPrint(ReportRunner.java:302) at com.servlet.RPT.ReportRunner.run(ReportRunner.java:270) at java.lang.Thread.run(Thread.java:619) Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:509) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:285) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:255) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:381) at org.apache.commons.beanutils.ConvertUtilsBean.<init>(ConvertUtilsBean.java:157) at org.apache.commons.beanutils.BeanUtilsBean.<init>(BeanUtilsBean.java:117) at org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68) at org.apache.commons.beanutils.ContextClassLoaderLocal.get(ContextClassLoaderLocal.java:153) at org.apache.commons.beanutils.BeanUtilsBean.getInstance(BeanUtilsBean.java:80) at org.apache.commons.beanutils.PropertyUtilsBean.getInstance(PropertyUtilsBean.java:114) at org.apache.commons.beanutils.PropertyUtils.describe(PropertyUtils.java:209) at org.apache.poi.hssf.usermodel.contrib.HSSFCellUtil.setCellStyleProperty(HSSFCellUtil.java:174) ... 9 more Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:420) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory Impl.java:502) ... 20 more Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) at java.lang.Class.getConstructor0(Class.java:2699) at java.lang.Class.getConstructor(Class.java:1657) at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:417) ... 21 more Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Category at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 26 more

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  • Logging *Business* Events - use logging framework?

    - by UpTheCreek
    Hi, Something here doesn't feel right to me here, and so I would like the community's input - perhaps I am approaching this in the wrong way.... Q: Is is appropriate to use traditional infrastructure logging frameworks (like log4net) to log business events? When I say business events, I mean I want a global log like this: xx:xx Customer A purchased widget B. xx:xx Widget B was dispatched from warehouse. xx:xx Customer B payment declined. Most traditional infrastructure logging frameworks have event levels something like this: FATAL ERROR WARN INFO DEBUG An of course these messages don't fit well into that. Best description would be INFO, but of course these are important events, and INFO is of very low importance. I would still like this as a 'log' (e.g. I don't want to have to extract this from my business objects each time I want to see it) Seems to me I have two options: 1) Use a framework like log4net and just define a special logger for this (and live with the fact that it doesn't feel right). 2) Provide a service for performing this that doesn't rely on a traditional logging services. I'm leaning towards 2. What has anyone else done in a similar situations? Thanks!

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  • java.util.logging: how to suppress date line

    - by andrews
    I'm trying to suppress output of the date line durinng logging when using the default logger in java.util.logging. For example, here is a typical output: Jun 1, 2010 10:18:12 AM gamma.utility.application info INFO: ping: db-time=2010-06-01 10:18:12.0, local-time=20100601t101812, duration=180000 Jun 1, 2010 10:21:12 AM gamma.utility.application info INFO: ping: db-time=2010-06-01 10:21:12.0, local-time=20100601t102112, duration=180000 I would like to get rid of the Jun 1, 2010... lines, they just clutter my log output. How can I do this?

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