Major Description
When I create a RoutingAppender that only has one route and no pattern in the Routes element, I get a NPE as soon as an entry is written into the appender:
org.apache.logging.log4j.core.appender.AppenderLoggingException: An exception occurred processing Appender Routing at org.apache.logging.log4j.core.appender.DefaultErrorHandler.error(DefaultErrorHandler.java:93) at org.apache.logging.log4j.core.config.AppenderControl.handleAppenderError(AppenderControl.java:165) at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:158) at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129) at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120) at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:508) at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:468) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:451) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:426) at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:82) at org.apache.logging.log4j.core.Logger.log(Logger.java:158) at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2135) at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2089) at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2072) at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1773) at org.apache.logging.log4j.EventLogger.logEvent(EventLogger.java:47) at org.apache.logging.log4j.core.appender.routing.RoutingAppenderNoPatternTest.routingTest(RoutingAppenderNoPatternTest.java:59) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.apache.logging.log4j.junit.LoggerContextRule$1.evaluate(LoggerContextRule.java:123) at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48) at org.junit.rules.RunRules.evaluate(RunRules.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58) Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936) at org.apache.logging.log4j.core.appender.routing.RoutingAppender.getAppender(RoutingAppender.java:300) at org.apache.logging.log4j.core.appender.routing.RoutingAppender.getControl(RoutingAppender.java:263) at org.apache.logging.log4j.core.appender.routing.RoutingAppender.append(RoutingAppender.java:242) at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156) ... 41 more
This happens for the following configuration:
<Routing name="Routing" ignoreExceptions="false"> <Routes> <Route> <RollingFile name="Routing-${sd:type}" fileName="${filename}" filePattern="target/routing1/test1-${sd:type}.%i.log.gz" > <PatternLayout> <Pattern>%d %p %C{1.} [%t] %m%n</Pattern> </PatternLayout> <SizeBasedTriggeringPolicy size="500" /> </RollingFile> </Route> </Routes> </Routing>