I want logs that come from a specific class in a bundle to go to a separate
file.
E.g. I have class
/package com.myproject.mypackage;
public class MyClass {
private static final Logger logger =
LoggerFactory.getLogger(MyClass.class);
...
}/
Everything that is logged from this class should go to a file MyClass.log.
I've added a custom logger/appender to the default
org.ops4j.pax.logging.cfg:
/# MyClass logger
log4j2.logger.myClass.name = com.myproject.mypackage.MyClass
log4j2.logger.myClass.level = INFO
log4j2.logger.myClass.additivity = false
log4j2.logger.myClass.appenderRef.myClassAppender.ref = myClassAppender
# GatherStats appender
log4j2.appender.myClassAppender.name = myClassAppender
log4j2.appender.myClassAppender.type = RollingFile
log4j2.appender.myClassAppender.fileName=${karaf.log}/MyClass.log
log4j2.appender.myClassAppender.filePattern=${karaf.log}/MyClass.log-%d{yyyy-MM-dd-HH)-%i.log.gz
I get the following stacktrace when launching Karaf:
2019-04-17 12:05:28,948 CM Configuration Updater (ManagedService Update:
pid=[org.ops4j.pax.logging]) ERROR The parameter is null: policy
2019-04-17 12:05:28,952 CM Configuration Updater (ManagedService Update:
pid=[org.ops4j.pax.logging]) ERROR Unable to inject fields into builder
class for plugin type class
org.apache.logging.log4j.core.appender.RollingFileAppender, element
RollingFile. org.apache.logging.log4j.core.config.ConfigurationException:
Arguments given for element RollingFile are invalid
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.injectFields(PluginBuilder.java:198)
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:121)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:952)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:892)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:884)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:508)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:232)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:244)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:545)
at
org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:261)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl.doUpdate(PaxLoggingServiceImpl.java:213)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl.updated(PaxLoggingServiceImpl.java:158)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl$1ManagedPaxLoggingService.updated(PaxLoggingServiceImpl.java:426)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.updated(ManagedServiceTracker.java:189)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.updateService(ManagedServiceTracker.java:152)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.provideConfiguration(ManagedServiceTracker.java:85)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.provide(ConfigurationManager.java:1113)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.run(ConfigurationManager.java:1069)
at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:138)
at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:105)
at java.lang.Thread.run(Thread.java:745)
2019-04-17 12:05:28,953 CM Configuration Updater (ManagedService Update:
pid=[org.ops4j.pax.logging]) ERROR Unable to invoke factory method in class
class org.apache.logging.log4j.core.appender.RollingFileAppender for element
RollingFile. java.lang.IllegalStateException: No factory method found for
class org.apache.logging.log4j.core.appender.RollingFileAppender
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.findFactoryMethod(PluginBuilder.java:224)
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:130)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:952)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:892)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:884)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:508)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:232)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:244)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:545)
at
org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:261)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl.doUpdate(PaxLoggingServiceImpl.java:213)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl.updated(PaxLoggingServiceImpl.java:158)
at
org.ops4j.pax.logging.log4j2.internal.PaxLoggingServiceImpl$1ManagedPaxLoggingService.updated(PaxLoggingServiceImpl.java:426)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.updated(ManagedServiceTracker.java:189)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.updateService(ManagedServiceTracker.java:152)
at
org.apache.felix.cm.impl.helper.ManagedServiceTracker.provideConfiguration(ManagedServiceTracker.java:85)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.provide(ConfigurationManager.java:1113)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.run(ConfigurationManager.java:1069)
at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:138)
at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:105)
at java.lang.Thread.run(Thread.java:745)
2019-04-17 12:05:28,954 CM Configuration Updater (ManagedService Update:
pid=[org.ops4j.pax.logging]) ERROR Null object returned for RollingFile in
Appenders.
2019-04-17 12:05:28,954 CM Configuration Updater (ManagedService Update:
pid=[org.ops4j.pax.logging]) ERROR Unable to locate appender
"myClassAppender" for logger config "com.myproject.mypackage.MyClass"
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