- logback-user - mailman3.qos.ch

Logaback not initializing !!!!!!!
by praveen patil 29 May '13

29 May '13

Hi folks, I am an ofbiz user. In pur project we are facing a requirement to logging on per thread basis. ofbiz uses Log4j default, but in our custom component we have used logabck with slf4j. I have put all the jar correctly and logback.xml on class path. this is my config file ?xml version="1.0" encoding="UTF-8"?> <configuration> <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender"> <discriminator class="com.logger.ThreadNameBasedDiscriminator"/> <sift> <appender class="ch.qos.logback.core.FileAppender"> <file>runtime/logs/app-${threadName}.html</file> <layout class="ch.qos.logback.classic.PatternLayout"> <pattern><div class="%p">%d (%t) [%24F:%-3L:%-5p]%x %m </div>%n</pattern> </layout> </appender> </sift> </appender> <root level="ALL"> <appender-ref ref="SIFT" /> </root> </configuration> How do i know that my logback.xml has initilized and if not initilized how do i configured it manually (programatically). Thanx in advance cheers, praveen

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How to make LogBack use MessageFormat
by Heitor Machado 28 May '13

28 May '13

Is it possible to use MessageFormat in logback ? I saw that it uses slf4j MessageFormat*ter*, because its faster as said here: http://stackoverflow.com/questions/8635769/out-of-curiosity-why-dont-loggin… SLF4J uses its own message formatting implementation which differs from that of the Java platform. This is justified by the fact that SLF4J's implementation performs about 10 times faster but at the cost of being non-standard and less flexible. The ideia is to use the full stack feature of MessageFormat like that: Object[] arguments = { new Integer(7), new Date(System.currentTimeMillis()), "a disturbance in the Force" }; String result = MessageFormat.format( "At {1,time} on {1,date}, there was {2} on planet {0,number,integer}.", arguments); output: At 12:30 PM on Jul 3, 2053, there was a disturbance in the Force on planet 7. anyone ?

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RollingFileAppender with SizeBasedTriggeringPolicy keeps writing to rotated file
by Rolando Segura 24 May '13

24 May '13

Hi I have an RollingFileAppender with a triggering policy of rotating by size when the log reaches 32MB and a maxIndex of 1, configuration below. It happens that after rotation logback keeps writing to both files. Is this expected? My understanding from documentation is that it will stop writing to the current log, rename it and starts writing a to a new file with the name of the File parameter. I'd appreciate your clarification if I'm not understanding well the RollingFileAppender and SizeBasedTriggering behavior. Thanks, Rolando <appender name="lognocrlf" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>/opt/log/file.nocrlf.log</File> <encoder> <pattern>[%d{ISO8601}] %5p [%t] $%logger$ - %replace(%m){'\r?\n',''}%n</pattern> </encoder> <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy"> <maxIndex>1</maxIndex> <FileNamePattern>/opt/log/file.nocrlf.log.%i</FileNamePattern> </rollingPolicy> <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy"> <MaxFileSize>32MB</MaxFileSize> </triggeringPolicy> </appender>

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What is the equivalent to org.apache.log4j.SimpleLayout?
by Neil Hart 24 May '13

24 May '13

We are converting some homegrown SNMP appenders and I wanted to find out what the SimpleLayout translates too. Thanks

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SyslogAppender header with timestamp? Jan 01 01:00:00
by Andreas Kruthoff 22 May '13

22 May '13

Hi I'm using the SyslogAppender and am writing to a remote syslogd, using a local1.info facility and a logfile. All messages in syslog have the timestamp "Jan 01 01:00:00". As I can't influence the layout of this appender (http://logback.qos.ch/codes.html#syslog_layout) I wonder where this timestamp comes from. I've used wireshark and seen that logback is sending this date to syslogd. Is this a defect or am I missing something? I've checked log4j with wireshark. The header isn't created, and there's no timestamp in the transmitted message. Syslog is filling in its own timestamp in this case, which is correct. logback 1.0.12 solaris 10. thx -andreas This email and any attachment may contain confidential information which is intended for use only by the addressee(s) named above. If you received this email by mistake, please notify the sender immediately, and delete the email from your system. You are prohibited from copying, disseminating or otherwise using the email or any attachment.

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Programmatically add OutputStreamAppender to all loggers
by Markos Fragkakis 21 May '13

21 May '13

Hi, I am building a simple web application that can be used to preview the pattern layout of log files. The application aims to give you an idea of what your log files will look like if you use a pattern layout. Here you can see it working for the Log4j PatternLayout (still in progress): http://log-preview.appspot.com/ Feel free to play around with, it is self explanatory. I want to add support for Logback as well. The idea is that I have a simple API, that is a servlet that receives a pattern as a parameter. I then create an appender with that pattern layout and attach it to the loggers of some classes. The appender actually appends to the response stream, so the logs are actually the response of the API. So, as I used a WriterAppender for log4j, I suppose an OutputStreamAppender is the equivalent for Logback. Unfortunately, I have not managed to append anything to the result stream. Could you see what is wring with my code? It was dead simple with Log4j, but I am still getting trouble here. Thanks! P.S. This is stripped down version that I think should be printing a log in the response package com.markos.logpreview; import java.io.IOException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.LoggerFactory; import ch.qos.logback.classic.Logger; import ch.qos.logback.classic.LoggerContext; import ch.qos.logback.classic.PatternLayout; import ch.qos.logback.classic.spi.ILoggingEvent; import ch.qos.logback.core.OutputStreamAppender; @SuppressWarnings("serial") public class Log_previewServlet extends HttpServlet { @Override public void doGet(HttpServletRequest req, HttpServletResponse resp) throwsIOException { resp.setContentType("text/plain"); LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); loggerContext.reset(); OutputStreamAppender<ILoggingEvent> outputStreamAppender = newOutputStreamAppender<ILoggingEvent>(); outputStreamAppender.setContext(loggerContext); outputStreamAppender.setOutputStream(resp.getOutputStream()); PatternLayout pl = new PatternLayout(); pl.setPattern("%d %5p %t [%c:%L] %m%n)"); pl.setContext(loggerContext); pl.start(); outputStreamAppender.setLayout(pl); outputStreamAppender.start(); Logger logbackLogger = loggerContext.getLogger(Logger.ROOT_LOGGER_NAME); logbackLogger.addAppender(outputStreamAppender); * logbackLogger.error("I should show up in the response!");* } } -- Sent from my iPhone

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Sending log files to user's home directory
by Donald McLean 16 May '13

16 May '13

I'm using a TimeBasedRollingPolicy for an app that may be run under different user names and I need the files to go to a "logs" directory in the running user's home directory "~/logs". Using "~/logs/" doesn't work in the <fileNamePattern>, but is there anything that will work? Thank you, Donald

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Using JNDIBasedContextDiscriminator with access SiftingAppender
by Xavier Dury 16 May '13

16 May '13

Hi, I would like to do something like this in my logback-access.xml: <appender name="FILE" class="ch.qos.logback.access.sift.SiftingAppender"> <discriminator class="ch.qos.logback.classic.sift.JNDIBasedContextDiscriminator" /> <sift> <appender class="ch.qos.logback.core.FileAppender"> <file>/logs/${contextName}/access.log</file> <encoder class="ch.qos.logback.access.PatternLayoutEncoder"> <pattern>%h %l %u %user %date "%r" %s %b</pattern> </encoder> </appender> </sift> </appender> but it doesn't work because I'm using a discriminator from logback-classic (JNDI). As the only discriminator in logback-access is AccessEventDiscriminator, is there another way to split access logs in multiple files (one per application)? Thanks, Xavier

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Send output to bit bucket?
by Donald McLean 14 May '13

14 May '13

Is there a way to set up logback so that everything is turned off by default? Thank you, Donald

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Re: [logback-user] SMTPAppender with Amazon SES
by Jason Bennett 14 May '13

14 May '13

> It's most likely coming from a stack trace generated by your application. > The JavaMail API is vulnerable to header injection via the Subject header, > and you're probably seeing that phenomenon (though by accident). > > For my own application, I wrote a subclass of SMTPAppender that truncates > the Subject header at the first EOL character, which prevents this issue > from occurring. > > Thanks, I figured it was something like this, but I didn't realize the problem with the subject line. Would this be appropriate to file as a JIRA issue? jason -- Jason Bennett, jasonab(a)acm.org E pur si muove! Get Firefox! - http://getfirefox.com

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