8

Droolsルールエンジンから独自のスレッドにログインする非同期ロガーを使用するJavaEEアプリをアンデプロイします。ルールエンジンが行う決定をログに記録するために使用しますが、スループットに影響を与えることはできないため、独自のスレッドで実行する必要があります。

アンデプロイすると、正しく閉じられなかったことを示す例外のページが表示されます。ロガーは次のようなスレッドであるため、これは当てはまる可能性があります。

while(true){
  log(something)  
  sleep(someTime);
}

スリープ状態でアンデプロイが開始されると、適切に反応する時間がない場合があります。残念ながら、ロガーからスレッド自体を取得できないため、@PreDestroyメソッドでスレッドに参加できません。アンデプロイするときに例外を回避するにはどうすればよいですか？

例外：

    [#|2010-07-19T15:50:10.123+0200|WARNING|sun-appserver2.1|javax.enterprise.system.core.classloading|_ThreadID=24;_ThreadName=Thread-258;_RequestID=22a7d379-0813-4248-9095-3fba7f4cb95a;|LDR5206: EJBClassLoader EJBClassLoader : 
doneCalled = true
doneSnapshot = EJBClassLoader.done() called ON EJBClassLoader : 
urlSet = [URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/jaxp-api-1.3.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/mvel2-2.0.10.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/activation-1.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/stax-1.2.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/jms-1.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-lang-2.4.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/joda-time-1.6.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/drools-compiler-5.0.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-email-1.2.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-beanutils-core-1.8.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/Mailforwarder-pojo-1.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/xml-apis-1.0.b2.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-logging-1.1.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/janino-2.5.15.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-digester-1.8.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/drools-api-5.0.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-net-2.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-lang-2.5.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/core-3.4.2.v_883_R34x.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/xpp3_min-1.1.4c.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/stax-api-1.0.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-configuration-1.6.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-collections-3.2.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/xstream-1.3.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/commons-beanutils-1.7.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/core-pojo-1.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/core-common-1.0.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/xml-writer-0.2.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/antlr-runtime-3.1.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/mail-1.4.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/activation.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/lib/drools-core-5.0.1.jar, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/applications/j2ee-apps/mailforwarder/Mailforwarder-ejbjar-1.0_jar/, URLEntry : file:/home/arne/env/runtime/glassfish/domains/domain1/generated/ejb/j2ee-apps/mailforwarder/]
doneCalled = false 
 Parent -> EJBClassLoader : 
urlSet = []
doneCalled = false 
 Parent -> java.net.URLClassLoader@898540


 AT Mon Jul 19 15:47:21 CEST 2010 
 BY :com.sun.enterprise.loader.EJBClassLoader.printStackTraceToString(EJBClassLoader.java:813)
com.sun.enterprise.loader.EJBClassLoader.done(EJBClassLoader.java:173)
com.sun.enterprise.server.AbstractLoader.done(AbstractLoader.java:355)
com.sun.enterprise.server.ApplicationLoader.unload(ApplicationLoader.java:268)
com.sun.enterprise.server.TomcatApplicationLoader.unload(TomcatApplicationLoader.java:218)
com.sun.enterprise.server.ExtendedApplicationLoader.unload(ExtendedApplicationLoader.java:263)
com.sun.enterprise.server.ApplicationManager.applicationUndeployed(ApplicationManager.java:525)
com.sun.enterprise.server.ApplicationManager.applicationUndeployed(ApplicationManager.java:703)
com.sun.enterprise.admin.event.AdminEventMulticaster.invokeApplicationDeployEventListener(AdminEventMulticaster.java:961)
com.sun.enterprise.admin.event.AdminEventMulticaster.handleApplicationDeployEvent(AdminEventMulticaster.java:943)
com.sun.enterprise.admin.event.AdminEventMulticaster.processEvent(AdminEventMulticaster.java:467)
com.sun.enterprise.admin.event.AdminEventMulticaster.multicastEvent(AdminEventMulticaster.java:182)
com.sun.enterprise.admin.server.core.DeploymentNotificationHelper.multicastEvent(DeploymentNotificationHelper.java:308)
com.sun.enterprise.deployment.phasing.DeploymentServiceUtils.multicastEvent(DeploymentServiceUtils.java:231)
com.sun.enterprise.deployment.phasing.ServerDeploymentTarget.sendStopEvent(ServerDeploymentTarget.java:332)
com.sun.enterprise.deployment.phasing.ApplicationStopPhase.runPhase(ApplicationStopPhase.java:136)
com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:108)
com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:966)
com.sun.enterprise.deployment.phasing.PEDeploymentService.undeploy(PEDeploymentService.java:333)
com.sun.enterprise.deployment.phasing.PEDeploymentService.undeploy(PEDeploymentService.java:308)
com.sun.enterprise.admin.mbeans.ApplicationsConfigMBean.undeploy(ApplicationsConfigMBean.java:667)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:390)
com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:373)
com.sun.enterprise.admin.config.BaseConfigMBean.invoke(BaseConfigMBean.java:477)
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:90)
$Proxy1.invoke(Unknown Source)
com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.invoke(SunoneInterceptor.java:304)
com.sun.enterprise.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:170)
com.sun.enterprise.deployment.autodeploy.AutoDeployer.invokeUndeploymentService(AutoDeployer.java:903)
com.sun.enterprise.deployment.autodeploy.AutoDeployer.undeployJavaEEArchive(AutoDeployer.java:399)
com.sun.enterprise.deployment.autodeploy.AutoDeployer.undeployApplication(AutoDeployer.java:381)
com.sun.enterprise.deployment.autodeploy.AutoDeployer.undeployAll(AutoDeployer.java:315)
com.sun.enterprise.deployment.autodeploy.AutoDeployControllerImpl$AutoDeployTask.run(AutoDeployControllerImpl.java:375)
java.util.TimerThread.mainLoop(Timer.java:512)
java.util.TimerThread.run(Timer.java:462)
 Parent -> EJBClassLoader : 
urlSet = []
doneCalled = false 
 Parent -> java.net.URLClassLoader@898540

 was requested to find resource META-INF/services/javax.xml.datatype.DatatypeFactory after done was invoked from the following stack trace
java.lang.Throwable
        at com.sun.enterprise.loader.EJBClassLoader.findResource(EJBClassLoader.java:459)
        at java.lang.ClassLoader.getResource(ClassLoader.java:978)
        at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1168)
        at com.sun.enterprise.loader.EJBClassLoader.getResourceAsStream(EJBClassLoader.java:796)
        at javax.xml.datatype.SecuritySupport$4.run(SecuritySupport.java:92)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.xml.datatype.SecuritySupport.getResourceAsStream(SecuritySupport.java:85)
        at javax.xml.datatype.FactoryFinder.findJarServiceProvider(FactoryFinder.java:250)
        at javax.xml.datatype.FactoryFinder.find(FactoryFinder.java:223)
        at javax.xml.datatype.DatatypeFactory.newInstance(DatatypeFactory.java:131)
        at com.thoughtworks.xstream.converters.extended.DurationConverter.<init>(DurationConverter.java:33)
        at sun.reflect.GeneratedConstructorAccessor70.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:725)
        at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:696)
        at com.thoughtworks.xstream.XStream.<init>(XStream.java:445)
        at com.thoughtworks.xstream.XStream.<init>(XStream.java:385)
        at com.thoughtworks.xstream.XStream.<init>(XStream.java:323)
        at org.drools.audit.WorkingMemoryFileLogger.writeToDisk(WorkingMemoryFileLogger.java:120)
        at org.drools.audit.ThreadedWorkingMemoryFileLogger.writeToDisk(ThreadedWorkingMemoryFileLogger.java:38)
        at org.drools.audit.ThreadedWorkingMemoryFileLogger$Writer.run(ThreadedWorkingMemoryFileLogger.java:50)
        at java.lang.Thread.run(Thread.java:619)
|#]

申し訳ありませんが、この質問で何が欲しいのか十分に明確にできませんでした。ここで新しい質問をしました

4

1 に答える 1

13

むしろScheduledExecutorService#scheduleAtFixedRate()昔ながらの代わりに使用してThread#sleep()ください。これを使用ServletContextListenerして、webappの起動時に実行し、webappのシャットダウン時に停止することができます。

@WebListener
public class Config implements ServletContextListener {

    private ScheduledExecutorService scheduler;

    @Override
    public void contextInitialized(ServletContextEvent event) {
        scheduler = Executors.newSingleThreadScheduledExecutor();
        scheduler.scheduleAtFixedRate(new Task(), 0, 1, TimeUnit.MINUTES); // Schedule to run every minute.
    }

    @Override
    public void contextDestroyed(ServletContextEvent event) {
        scheduler.shutdown(); // Important! This stops the thread.
    }

}

Taskこのように見える場所：

public class Task implements Runnable {

    @Override
    public void run() {
        log(something);
    }

}

ご使用の環境がサーブレット3.0をサポートしていない場合は@WebListener、次のように登録しweb.xmlて実行します。

<listener>
    <listener-class>com.example.Config</listener-class>
</listener>
于 2010-07-22T16:05:33.227 に答える