[LOG4J2-1035] Log4j2 tries to SystemClassLoader when running on Google AppEngine

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3
• Fix Version/s: 2.4
• Component/s: Configurators

Environment

Google AppEngine

• Assignee: Unassigned
• Reporter: Lukasz Lenart
• Created: 29/May/15 05:04
• Updated: 11/Jun/15 06:06
• Resolved: 11/Jun/15 05:19

Description

Apache Struts recently switched to Log4j2 as a base logging layer and this broke deployments to Google AppEngine, below is the exception:

Uncaught exception from servlet
java.lang.ExceptionInInitializerError
	at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:55)
	at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:56)
	at org.apache.struts2.tiles.StrutsTilesListener.<clinit>(StrutsTilesListener.java:50)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:375)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.newListenerInstance(WebXmlConfiguration.java:650)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.initListener(WebXmlConfiguration.java:631)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.initWebXmlElement(WebXmlConfiguration.java:368)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.initialize(WebXmlConfiguration.java:289)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.configure(WebXmlConfiguration.java:222)
	at org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp(WebXmlConfiguration.java:180)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1247)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:199)
	at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:174)
	at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:134)
	at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:527)
	at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
	at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
	at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:230)
	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
	at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)
	at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "getClassLoader")
	at java.security.AccessControlContext.checkPermission(AccessControlContext.java:382)
	at java.security.AccessController.checkPermission(AccessController.java:572)
	at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
	at com.google.apphosting.runtime.security.CustomSecurityManager.checkPermission(CustomSecurityManager.java:56)
	at java.lang.ClassLoader.checkClassLoaderPermission(ClassLoader.java:1606)
	at java.lang.ClassLoader.getSystemClassLoader(ClassLoader.java:1525)
	at org.apache.logging.log4j.util.LoaderUtil.findUrlResources(LoaderUtil.java:192)
	at org.apache.logging.log4j.util.LoaderUtil.findResources(LoaderUtil.java:183)
	at org.apache.logging.log4j.util.PropertiesUtil.<init>(PropertiesUtil.java:90)
	at org.apache.logging.log4j.util.PropertiesUtil.<clinit>(PropertiesUtil.java:36)
	... 30 more

Looks like it tries to read a file from filesystem which is prohibited.

Issue Links

• is related to: LOG4J2-1051 NoClassDefFoundError when starting app on Google App Engine