NPE: CmsConfigurationCache:125 #548
Description
I have found the NPE ERROR [ration.CmsConfigurationCache$1: 125] many times in production. I don't know the circumstances under which it is thrown, though, nor can I asses how critical it is.
The relevant code (https://github.com/alkacon/opencms-core/blob/build_10_5_2/src/org/opencms/ade/configuration/CmsConfigurationCache.java#L125) is pretty old and simple:
if (m_state == null) {
// this can only happen before the ADE manager is initialized
return Boolean.FALSE;
}
try {
return Boolean.valueOf(m_state.isDetailPage(m_cms, key)); // << Throws exception
} catch (Exception e) {
LOG.error(e.getLocalizedMessage(), e);
return Boolean.FALSE;
}
The production server that logged these errors runs a 10.5.2 version.
Excerpt from the logs:
31 Jan 2018 07:37:40,876 ERROR [ration.CmsConfigurationCache$1: 125]
java.lang.NullPointerException
at org.opencms.util.CmsStringUtil.joinPaths(CmsStringUtil.java:1175)
at org.opencms.ade.configuration.CmsADEConfigCacheState.isDetailPage(CmsADEConfigCacheState.java:448)
at org.opencms.ade.configuration.CmsConfigurationCache$1.load(CmsConfigurationCache.java:123)
at org.opencms.ade.configuration.CmsConfigurationCache$1.load(CmsConfigurationCache.java:112)
at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3527)
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2319)
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282)
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197)
at com.google.common.cache.LocalCache.get(LocalCache.java:3937)
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3941)
at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4824)
at org.opencms.ade.configuration.CmsConfigurationCache.isDetailPage(CmsConfigurationCache.java:272)
at org.opencms.ade.configuration.CmsADEManager.isDetailPage(CmsADEManager.java:964)
at org.opencms.ui.components.CmsResourceIcon.getDetailType(CmsResourceIcon.java:151)
at org.opencms.ui.components.CmsResourceIcon.getDefaultFileOrDetailType(CmsResourceIcon.java:120)
at org.opencms.ui.components.CmsResourceIcon.getIconInnerHTML(CmsResourceIcon.java:314)
at org.opencms.ui.components.CmsResourceIcon.getIconInnerHTML(CmsResourceIcon.java:288)
at org.opencms.ui.components.CmsResourceIcon.initContent(CmsResourceIcon.java:435)
at org.opencms.ui.components.CmsResourceIcon.<init>(CmsResourceIcon.java:100)
at org.opencms.ui.components.CmsResourceTable.fillItemDefault(CmsResourceTable.java:350)
at org.opencms.ui.components.CmsResourceTable.fillItem(CmsResourceTable.java:663)
at org.opencms.ui.components.CmsResourceTable.fillTable(CmsResourceTable.java:565)
at org.opencms.ui.apps.CmsFileExplorer.readFolder(CmsFileExplorer.java:1202)
at org.opencms.ui.apps.CmsFileExplorer.readFolder(CmsFileExplorer.java:1177)
at org.opencms.ui.apps.CmsFileExplorer.handleFileTreeClick(CmsFileExplorer.java:1291)
at org.opencms.ui.apps.CmsFileExplorer$9.itemClick(CmsFileExplorer.java:641)
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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1015)
at com.vaadin.ui.Tree.changeVariables(Tree.java:517)
at com.vaadin.server.communication.ServerRpcHandler.changeVariables(ServerRpcHandler.java:627)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:461)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:411)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:273)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1422)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:379)
at org.opencms.main.CmsUIServlet.service(CmsUIServlet.java:321)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.StuckThreadDetectionValve.invoke(StuckThreadDetectionValve.java:206)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1533)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1489)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)