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Posted to dev@manifoldcf.apache.org by "Maciej Lizewski (JIRA)" <ji...@apache.org> on 2012/08/31 16:53:07 UTC
[jira] [Comment Edited] (CONNECTORS-516) Logging causes exceptions
under Tomcat
[ https://issues.apache.org/jira/browse/CONNECTORS-516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446018#comment-13446018 ]
Maciej Lizewski edited comment on CONNECTORS-516 at 9/1/12 1:51 AM:
--------------------------------------------------------------------
I am working on svn trunk and problem persist... I did solve it by writing my own ServletContextListener:
public class ManifoldCFJobServletContextListener implements ServletContextListener {
private ServletContext context = null;
public static final String agentShutdownSignal = org.apache.manifoldcf.agents.AgentRun.agentShutdownSignal;
public static final String useJettyParentClassLoaderProperty = "org.apache.manifoldcf.usejettyparentclassloader";
private Thread jobsThread = null;
/*This method is invoked when the Web Application has been removed
and is no longer able to accept requests
*/
public void contextDestroyed(ServletContextEvent event) {
this.context = null;
if (jobsThread != null) {
jobsThread.interrupt();
jobsThread = null;
}
}
//This method is invoked when the Web Application
//is ready to service requests
public void contextInitialized(ServletContextEvent event) {
this.context = event.getServletContext();
try {
ManifoldCF.initializeEnvironment();
IThreadContext tc = ThreadContextFactory.make();
boolean useParentClassLoader = ManifoldCF.getBooleanProperty(useJettyParentClassLoaderProperty, true);
if (useParentClassLoader) {
// Clear the agents shutdown signal.
ILockManager lockManager = LockManagerFactory.make(tc);
lockManager.clearGlobalFlag(agentShutdownSignal);
// Do the basic initialization of the database and its schema
ManifoldCF.createSystemDatabase(tc);
ManifoldCF.installTables(tc);
org.apache.manifoldcf.crawler.system.ManifoldCF.registerThisAgent(tc);
ManifoldCF.reregisterAllConnectors(tc);
}
runAgents(tc);
} catch (ManifoldCFException ex) {
Logger.getLogger(ManifoldCFServletContextListener.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void runAgents(final IThreadContext tc)
throws ManifoldCFException {
final ILockManager lockManager = LockManagerFactory.make(tc);
jobsThread = new Thread() {
public void run() {
while (true) {
try {
// Any shutdown signal yet?
if (lockManager.checkGlobalFlag(agentShutdownSignal)) {
break;
}
// Start whatever agents need to be started
ManifoldCF.startAgents(tc);
try {
ManifoldCF.sleep(5000);
} catch (InterruptedException e) {
break;
}
} catch (ManifoldCFException ex) {
Logger.getLogger(ManifoldCFJobServletContextListener.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
};
jobsThread.start();
}
}
was (Author: redguy666):
I am working on svn trunk and problem persist... I di solve it by writing my own ServletContextListener:
public class ManifoldCFJobServletContextListener implements ServletContextListener {
private ServletContext context = null;
public static final String agentShutdownSignal = org.apache.manifoldcf.agents.AgentRun.agentShutdownSignal;
public static final String useJettyParentClassLoaderProperty = "org.apache.manifoldcf.usejettyparentclassloader";
private Thread jobsThread = null;
/*This method is invoked when the Web Application has been removed
and is no longer able to accept requests
*/
public void contextDestroyed(ServletContextEvent event) {
this.context = null;
if (jobsThread != null) {
jobsThread.interrupt();
jobsThread = null;
}
}
//This method is invoked when the Web Application
//is ready to service requests
public void contextInitialized(ServletContextEvent event) {
this.context = event.getServletContext();
try {
ManifoldCF.initializeEnvironment();
IThreadContext tc = ThreadContextFactory.make();
boolean useParentClassLoader = ManifoldCF.getBooleanProperty(useJettyParentClassLoaderProperty, true);
if (useParentClassLoader) {
// Clear the agents shutdown signal.
ILockManager lockManager = LockManagerFactory.make(tc);
lockManager.clearGlobalFlag(agentShutdownSignal);
// Do the basic initialization of the database and its schema
ManifoldCF.createSystemDatabase(tc);
ManifoldCF.installTables(tc);
org.apache.manifoldcf.crawler.system.ManifoldCF.registerThisAgent(tc);
ManifoldCF.reregisterAllConnectors(tc);
}
runAgents(tc);
} catch (ManifoldCFException ex) {
Logger.getLogger(ManifoldCFServletContextListener.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void runAgents(final IThreadContext tc)
throws ManifoldCFException {
final ILockManager lockManager = LockManagerFactory.make(tc);
jobsThread = new Thread() {
public void run() {
while (true) {
try {
// Any shutdown signal yet?
if (lockManager.checkGlobalFlag(agentShutdownSignal)) {
break;
}
// Start whatever agents need to be started
ManifoldCF.startAgents(tc);
try {
ManifoldCF.sleep(5000);
} catch (InterruptedException e) {
break;
}
} catch (ManifoldCFException ex) {
Logger.getLogger(ManifoldCFJobServletContextListener.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
};
jobsThread.start();
}
}
> Logging causes exceptions under Tomcat
> --------------------------------------
>
> Key: CONNECTORS-516
> URL: https://issues.apache.org/jira/browse/CONNECTORS-516
> Project: ManifoldCF
> Issue Type: Bug
> Affects Versions: ManifoldCF 0.6
> Reporter: Maciej Lizewski
>
> under jetty (with jetty-runner) everything is ok.
> But I would like to run the application also in tomcat and almost everything works except one thing: Logging component causes NullPointerException. I happens in mcf-authority-service:
> 2012-08-31 11:06:20 org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet [UserACLServlet] in context with path [/mcf-authority-service] threw exception
> java.lang.NullPointerException
> at org.apache.manifoldcf.authorityservice.servlet.UserACLServlet.doGet(UserACLServlet.java:106)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
> at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
> at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> in mcf-crawler-ui on pages which use Logging:
> 2012-08-31 10:47:03 org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet [jsp] in context with path [/mcf-crawler-ui] threw exception [java.lang.NullPointerException] with root cause
> java.lang.NullPointerException
> at org.apache.manifoldcf.agents.output.solr.HttpPoster.checkPost(HttpPoster.java:394)
> at org.apache.manifoldcf.agents.output.solr.SolrConnector.check(SolrConnector.java:272)
> at org.apache.jsp.viewoutput_jsp._jspService(viewoutput_jsp.java:342)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
> at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
> at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> they all point to lines looking like this:
> UserACLServlet.java line 106:
> Logging.authorityService.debug("Received request");
> or HttpPoster.java line 394:
> if (Logging.ingest.isDebugEnabled())
> Why is Manfold environment not being initialized? I really need to run it under Tomcat in some cases...
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