PortletInitializationException thrown for not implementing javax.portlet.filter.PortletFilter

[tkerle]

Hi all,

I have the following problem since I updated my web-application to the newest version of Tomcat 7.27. I get the following exception when I start up Tomcat from Eclipse (Helios):

ERROR LifeCycle - Cannot start object org.gatein.pc.portlet.container.PortletInitializationException: Cannot create filter with class com.qnamic.railopt.web.security.portlet.PortletSecurityFilter because it does not implement the expected interface javax.portlet.filter.PortletFilter at org.gatein.pc.portlet.impl.jsr168.ClassInstanceLifeCycle.create(ClassInstanceLifeCycle.java:85)  at org.gatein.pc.portlet.impl.jsr168.PortletFilterImpl.start(PortletFilterImpl.java:144)  at org.gatein.pc.portlet.impl.container.PortletFilterLifeCycle.invokeStart(PortletFilterLifeCycle.java:66)  at org.gatein.pc.portlet.impl.container.LifeCycle.managedStart(LifeCycle.java:93)  at org.gatein.pc.portlet.impl.container.PortletApplicationLifeCycle.startDependents(PortletApplicationLifeCycle.java:339)  at org.gatein.pc.portlet.impl.container.LifeCycle.managedStart(LifeCycle.java:129)  at org.gatein.pc.mc.PortletApplicationDeployment.install(PortletApplicationDeployment.java:153)  at org.gatein.pc.mc.PortletApplicationDeployer.add(PortletApplicationDeployer.java:216)  at org.gatein.pc.mc.PortletApplicationDeployer.onEvent(PortletApplicationDeployer.java:185)  at org.gatein.wci.impl.DefaultServletContainer.safeFireEvent(DefaultServletContainer.java:200)  at org.gatein.wci.impl.DefaultServletContainer.fireEvent(DefaultServletContainer.java:219)  at org.gatein.wci.impl.DefaultServletContainer.access$400(DefaultServletContainer.java:60)  at org.gatein.wci.impl.DefaultServletContainer$RegistrationImpl.registerWebApp(DefaultServletContainer.java:338)  at org.gatein.wci.tomcat.TC7ServletContainerContext.start(TC7ServletContainerContext.java:380)  at org.gatein.wci.tomcat.TC7ServletContainerContext.lifecycleEvent(TC7ServletContainerContext.java:234)  at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)  at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)  at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:401)  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:168) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  at java.lang.Thread.run(Thread.java:619) A: S: R: U: ERROR LifeCycle - Cannot start object org.gatein.pc.portlet.container.PortletInitializationException: Cannot create filter with class com.qnamic.railopt.web.core.portal.ContextFilter because it does not implement the expected interface javax.portlet.filter.PortletFilter at org.gatein.pc.portlet.impl.jsr168.ClassInstanceLifeCycle.create(ClassInstanceLifeCycle.java:85)  at org.gatein.pc.portlet.impl.jsr168.PortletFilterImpl.start(PortletFilterImpl.java:144)  at org.gatein.pc.portlet.impl.container.PortletFilterLifeCycle.invokeStart(PortletFilterLifeCycle.java:66)  at org.gatein.pc.portlet.impl.container.LifeCycle.managedStart(LifeCycle.java:93)  at org.gatein.pc.portlet.impl.container.PortletApplicationLifeCycle.startDependents(PortletApplicationLifeCycle.java:339)  at org.gatein.pc.portlet.impl.container.LifeCycle.managedStart(LifeCycle.java:129)  at org.gatein.pc.mc.PortletApplicationDeployment.install(PortletApplicationDeployment.java:153)  at org.gatein.pc.mc.PortletApplicationDeployer.add(PortletApplicationDeployer.java:216)  at org.gatein.pc.mc.PortletApplicationDeployer.onEvent(PortletApplicationDeployer.java:185)  at org.gatein.wci.impl.DefaultServletContainer.safeFireEvent(DefaultServletContainer.java:200)  at org.gatein.wci.impl.DefaultServletContainer.fireEvent(DefaultServletContainer.java:219)  at org.gatein.wci.impl.DefaultServletContainer.access$400(DefaultServletContainer.java:60)  at org.gatein.wci.impl.DefaultServletContainer$RegistrationImpl.registerWebApp(DefaultServletContainer.java:338)  at org.gatein.wci.tomcat.TC7ServletContainerContext.start(TC7ServletContainerContext.java:380)  at org.gatein.wci.tomcat.TC7ServletContainerContext.lifecycleEvent(TC7ServletContainerContext.java:234)  at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)  at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)  at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:401)  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:168) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  at java.lang.Thread.run(Thread.java:619)

There were a few steps to do to update from Tomcat 6 to 7 - several errors which could be solved by adding or removing jars from the poms.xml. Then I ran into the problem that my entry in the web.xml of the project was outdated. I replaced the Tomcat 6 dependencies by Tomcat 7 dependencies:

<servlet>

        <servlet-name>ContainerServlet</servlet-name>

        <servlet-class>org.gatein.wci.tomcat.TC7ContainerServlet</servlet-class>

        <load-on-startup>1</load-on-startup>

</servlet>

Clearly the TC6ContainerServlet was replaced by the TC7ContainerServlet, which can be found in the following jar: wci-tomcat7-2.1.1-GA.jar

When I debug the application I enter in the following class:

package org.gatein.pc.portlet.impl.jsr168;

public class ClassInstanceLifeCycle<T> {

...

public void create() throws PortletInitializationException

   {

      T instance;

      try

      {

         Class clazz = classLoader.loadClass(className);

         if (expectedClass.isAssignableFrom(clazz))

         {

            Class<? extends T> castedClass = clazz.asSubclass(expectedClass);

            Constructor<? extends T> ctor = castedClass.getConstructor();

            instance = ctor.newInstance();

         }

...

}

The entries in red are of the following types:

className: com.qnamic.railopt.web.security.portlet.PortletSecurityFilter

expectedClass: javax.portlet.filter.PortletFilter

The problem is now that the call isAssignableFrom(..) fails! and an exception is thrown.

The error message claims that the class PortletSecurityFilter doesn't implement the PortletFilter interface. But it does:

public class PortletSecurityFilter implements ActionFilter, EventFilter, RenderFilter, ResourceFilter {

...//code here

}

ActionFilter is an extension of PortletFilter.

The package structure is as follows:

RailOptWebAbsence : Contains the portlet that should be run on the portal and throws the exception

Dependencies:

- RailOptWebSecurity

- RailOptWebCommunicator

- RailOptWebPortletBridge

- RailOptWebCommunicator

which contains no additional jars.

The classloader is the webappclassloader /RailOptWebAbsence. The library portlet-api-2.0.jar is contained as jar in RailOptWebAbsence.

I use the following gatein jars:

- pc-portlet-2.3.1-GA.jar

- pc-mc-2.3.0-Beta04.jar

- pc-controller-2.3.1-GA.jar

- pc-api-2.3.1-GA.jar

- wci-wci-2.1.1-GA.jar

- wci-tomcat7-2.1.1-GA.jar

These libraries are part of JBoss Gatein 3.2!

Since I work with Spring I have defined an applicationContext-gatein.xml which is referenced by the applicationContext.xml in the project:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"

    xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd

        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd

        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <bean id="PortletApplicationDeployer" class="org.gatein.pc.mc.PortletApplicationDeployer"

        init-method="start" destroy-method="stop">

        <property name="servletContainerFactory">

            <ref bean="ServletContainerFactory" />

        </property>

        <property name="containerPortletInvoker">

            <ref bean="ContainerPortletInvoker" />

        </property>

    </bean>

    <alias name="PortletApplicationDeployer" alias="PortletApplicationRegistry" />

    <!-- The ServletContainerFactory -->

    <bean name="ServletContainerFactory" class="org.gatein.wci.impl.DefaultServletContainerFactory"

        factory-method="getInstance">

    </bean>

    <!-- The servlet container obtained from the ServletContainerFactory -->

    <bean name="ServletContainer" factory-bean="ServletContainerFactory"

        factory-method="getServletContainer" class="org.gatein.wci.ServletContainer">

    </bean>

    <!-- The producer persistence manager -->

    <bean name="ProducerPersistenceManager"

        class="org.gatein.pc.portlet.impl.state.producer.PortletStatePersistenceManagerService" />

    <!-- The producer state management policy -->

    <bean name="ProducerStateManagementPolicy"

        class="org.gatein.pc.portlet.impl.state.StateManagementPolicyService">

        <property name="persistLocally">

            <value>false</value>

        </property>

    </bean>

    <!-- The producer state converter -->

    <bean name="ProducerStateConverter"

        class="com.qnamic.railopt.web.portal.gatein.GateInStateConverter" />

    <!-- The consumer portlet invoker -->

    <bean name="ConsumerPortletInvoker" class="org.gatein.pc.portlet.PortletInvokerInterceptor">

        <property name="next">

            <ref bean="ConsumerCacheInterceptor" />

        </property>

    </bean>

    <bean name="ConsumerCacheInterceptor"

        class="org.gatein.pc.portlet.aspects.ConsumerCacheInterceptor">

        <property name="next">

            <ref bean="PortletCustomizationInterceptor" />

        </property>

    </bean>

    <bean name="PortletCustomizationInterceptor"

        class="org.gatein.pc.portlet.aspects.PortletCustomizationInterceptor">

        <property name="next">

            <ref bean="ProducerPortletInvoker" />

        </property>

    </bean>

    <!-- The producer portlet invoker -->

    <bean name="ProducerPortletInvoker"

        class="org.gatein.pc.portlet.state.producer.ProducerPortletInvoker">

        <property name="next">

            <ref bean="ContainerPortletInvoker" />

        </property>

        <property name="persistenceManager">

            <ref bean="ProducerPersistenceManager" />

        </property>

        <property name="stateManagementPolicy">

            <ref bean="ProducerStateManagementPolicy" />

        </property>

        <property name="stateConverter">

            <ref bean="ProducerStateConverter" />

        </property>

    </bean>

    <!-- The portlet container invoker -->

    <bean name="ContainerPortletInvoker"

        class="org.gatein.pc.portlet.container.ContainerPortletInvoker">

        <property name="next">

            <ref bean="ValveInterceptor" />

        </property>

    </bean>

    <!-- Container stack -->

    <bean name="ValveInterceptor" class="org.gatein.pc.portlet.aspects.ValveInterceptor">

        <property name="portletApplicationRegistry">

            <ref bean="PortletApplicationRegistry" />

        </property>

        <property name="next">

            <ref bean="SecureTransportInterceptor" />

        </property>

    </bean>

    <bean name="SecureTransportInterceptor"

        class="org.gatein.pc.portlet.aspects.SecureTransportInterceptor">

        <property name="next">

            <ref bean="ContextDispatcherInterceptor" />

        </property>

    </bean>

    <bean name="ContextDispatcherInterceptor"

        class="org.gatein.pc.portlet.aspects.ContextDispatcherInterceptor">

        <property name="servletContainerFactory">

            <ref bean="ServletContainerFactory" />

        </property>

        <property name="next">

            <ref bean="ProducerCacheInterceptor" />

        </property>

    </bean>

    <bean name="ProducerCacheInterceptor"

        class="org.gatein.pc.portlet.aspects.ProducerCacheInterceptor">

        <property name="next">

            <ref bean="CCPPInterceptor" />

        </property>

    </bean>

    <bean name="CCPPInterceptor" class="org.gatein.pc.portlet.aspects.CCPPInterceptor">

        <property name="next">

            <ref bean="RequestAttributeConversationInterceptor" />

        </property>

    </bean>

    <bean name="RequestAttributeConversationInterceptor"

        class="org.gatein.pc.portlet.aspects.RequestAttributeConversationInterceptor">

        <property name="next">

            <ref bean="EventPayloadInterceptor" />

        </property>

    </bean>

    <bean name="EventPayloadInterceptor" class="org.gatein.pc.portlet.aspects.EventPayloadInterceptor">

        <property name="next">

            <ref bean="PortletContainerDispatcher" />

        </property>

    </bean>

    <bean name="PortletContainerDispatcher"

        class="org.gatein.pc.portlet.container.ContainerPortletDispatcher">

    </bean>

</beans>

The referenced classes which will be injected by the Spring framework are fully loaded (Tomcat info messages)!

I don't now if there are needed more informations. If yes let me now!

[mstruk]

Did you try remove portlet-api-2.0.jar from RailOptWebAbsence?

[tkerle]

In fact I mark portlet-api-2.0.jar as provided by maven (only in the parent project it should be present) but when I watch the eclipse directory org.eclipse.wst.server.core where the two applications are deployed portlet-api is present in the two contexts /RailOptWebAbsence and /RailOptWebPortal. In the context.xml of the RailOptWebPortal I put the following:

<context privileged="true" crossContext="true"/>

When I have a look at the classloaders Tomcat takes:

for RailOptWebAbsence: WebAppClassLoader with context name :/RailOptWebAbsence

for RailOptWebPortal (he takes out the interface definition of PortletFIlter of this jar): WebAppClassLoader with context name :/RailOptWebPortal

I think you are right that he takes the wrong class loader for the PortletFilter and tries to compare it with the /RailOptWebAbsence class loader:

Is there a possibility that he takes only the class loader of /RailOptWebAbsence or a common classloader? (entry in context.xml)

[tkerle]

From my reflection it's a bug how pc-porlet.jar handles the interface javax.portlet.filter.PortletFilter. If I have a look at the code:

Class clazz = classLoader.loadClass (className);

Here Tomcat will take the current class loader in the current scope /RailOptWebAbsence. The expectedClass in the next line of ClassInstanceLifeCycle will be of a different scope, dependent where the portlet-api-2.0.jar is living. Then it should be

clazz = expectedClass.getClassLoader().loadClass ("javax.portlet.filter.PortletFilter");

this would assure that the same class loader would be used that is also be used to get the implementation of PortletFilter

However now I'm looking for a work around to give /RailOptWebAbsence the same classloader as /RailOptWebPortal!

[julien_viet]

that would not work because when the portlet container invokes the portlet beause the portlet container implements the javax.portlet.PortletRequest interface and this would lead to throw a ClassCastException because it would not be loaded from the same classloader.

[hoang_to]

Let's pack your class com.qnamic.railopt.web.security.portlet.PortletSecurityFilter in a jar and put this jar to tomcat/lib.