Hi,
I have the SAML module in my application and for some custom Java actions I added the Log4j library to userlib. It results in the error/stack trace below. I have two questions:
- What is your opinion on having the Log4J library in userlib; is this by all means a no-go (for production)?
- In case I have to keep the Log4J library, what would be the easiest to solve the error? On sources like Stackoverflow I see solutions like adjusting the Java code to set logging to null instead of velocity.log or use an external "property file".
org.apache.velocity.exception.VelocityException: Error initializing log: Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration.
at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:875)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:262)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:646)
at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:116)
at saml20.implementation.common.HTTPUtils.getEngine(HTTPUtils.java:39)
at saml20.implementation.SAMLRequestHandler.<init>(SAMLRequestHandler.java:70)
at saml20.implementation.SAMLRequestHandler.getInstance(SAMLRequestHandler.java:56)
at saml20.implementation.SSOServerConfiguration.start(SSOServerConfiguration.java:18)
at saml20.actions.StartSSO.executeAction(StartSSO.java:31)
at saml20.actions.StartSSO.executeAction(StartSSO.java:19)
at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49)
at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260)
at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248)
at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:188)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:194)
at com.mendix.core.component.InternalCore.execute(InternalCore.java:386)
at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:52)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149)
at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49)
at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260)
at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248)
at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:188)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:194)
at com.mendix.core.component.InternalCore.executeSync(InternalCore.java:468)
at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:43)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149)
at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49)
at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260)
at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248)
at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:188)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:194)
at com.mendix.core.component.InternalCore.executeSync(InternalCore.java:468)
at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:43)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192)
at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149)
at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49)
at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260)
at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248)
at com.mendix.core.actionmanagement.CustomActionMonitorImpl$$anonfun$run$1.apply(CustomMonitoredAction.scala:14)
at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2$$anon$1.execute(ActionDispatching.scala:145)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2.apply(ActionDispatching.scala:147)
at scala.util.Try$.apply(Try.scala:191)
at com.mendix.core.session.Worker$$anonfun$receive$3.applyOrElse(ActionDispatching.scala:141)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at com.mendix.core.session.Worker.aroundReceive(ActionDispatching.scala:137)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
at akka.dispatch.Mailbox.run(Mailbox.scala:220)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration.
at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:220)
at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:269)
at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:871)
... 62 more
Caused by: java.lang.RuntimeException: Error configuring Log4JLogChute :
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.velocity.util.ExceptionUtils.createWithCause(ExceptionUtils.java:67)
at org.apache.velocity.util.ExceptionUtils.createRuntimeException(ExceptionUtils.java:45)
at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:133)
at org.apache.velocity.runtime.log.Log4JLogChute.init(Log4JLogChute.java:85)
at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:157)
... 64 more
Caused by: java.io.FileNotFoundException: velocity.log (Permission denied)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
at java.io.FileOutputStream.<init>(FileOutputStream.java:133)
at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)
at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:207)
at org.apache.log4j.FileAppender.<init>(FileAppender.java:110)
at org.apache.log4j.RollingFileAppender.<init>(RollingFileAppender.java:79)
at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:118)
... 66 more
Regards,
Paul