[jboss-user] [JBossCache] - java.io.NotSerializableException: WebappClassLoader
philippe.suray
do-not-reply at jboss.com
Wed Apr 4 12:03:51 EDT 2007
Hello,
I would like to use TreeCache inside JBossAS and access it from Tomcat running outside JBossAS.
- JBoss 4.0.5 GA
- Tomcat 5.5.20
- WinXP
- j2sdk1.5.0_07
I have a cache-service.xml config in the deploy directory of JBoss, here is the config:
| <?xml version="1.0" encoding="UTF-8"?>
|
| <!-- ===================================================================== -->
| <!-- -->
| <!-- Sample TreeCache Service Configuration -->
| <!-- -->
| <!-- ===================================================================== -->
|
| <server>
|
| <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>
|
|
| <!-- ==================================================================== -->
| <!-- Defines TreeCache configuration -->
| <!-- ==================================================================== -->
|
| <mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache">
| <depends>jboss:service=Naming</depends>
| <depends>jboss:service=TransactionManager</depends>
|
| <!-- Configure the TransactionManager -->
| <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>
|
| <!--
| Node locking level : SERIALIZABLE
| REPEATABLE_READ (default)
| READ_COMMITTED
| READ_UNCOMMITTED
| NONE
| -->
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
|
| <!--
| Valid modes are LOCAL
| REPL_ASYNC
| REPL_SYNC
| INVALIDATION_ASYNC
| INVALIDATION_SYNC
| -->
| <attribute name="CacheMode">LOCAL</attribute>
|
| <!--<attribute name="UseInterceptorMbeans">true</attribute>-->
|
| <!-- Name of cluster. Needs to be the same for all clusters, in order
| to find each other
| -->
| <attribute name="ClusterName">TreeCache-Cluster</attribute>
|
| <!-- JGroups protocol stack properties. Can also be a URL,
| e.g. file:/home/bela/default.xml
| <attribute name="ClusterProperties"></attribute>
| -->
|
| <attribute name="ClusterConfig">
| <config>
| <!-- UDP: if you have a multihomed machine,
| set the bind_addr attribute to the appropriate NIC IP address -->
| <!-- UDP: On Windows machines, because of the media sense feature
| being broken with multicast (even after disabling media sense)
| set the loopback attribute to true -->
| <UDP mcast_addr="228.1.2.3" mcast_port="48866"
| ip_ttl="64" ip_mcast="true"
| mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
| ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
| loopback="false"/>
| <PING timeout="2000" num_initial_members="3"
| up_thread="false" down_thread="false"/>
| <MERGE2 min_interval="10000" max_interval="20000"/>
| <FD shun="true" up_thread="true" down_thread="true"/>
| <VERIFY_SUSPECT timeout="1500"
| up_thread="false" down_thread="false"/>
| <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
| max_xmit_size="8192" up_thread="false" down_thread="false"/>
| <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
| down_thread="false"/>
| <pbcast.STABLE desired_avg_gossip="20000"
| up_thread="false" down_thread="false"/>
| <FRAG frag_size="8192"
| down_thread="false" up_thread="false"/>
| <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
| shun="true" print_local_addr="true"/>
| <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"/>
| </config>
| </attribute>
|
|
| <!--
| The max amount of time (in milliseconds) we wait until the
| initial state (ie. the contents of the cache) are retrieved from
| existing members in a clustered environment
| -->
| <attribute name="InitialStateRetrievalTimeout">20000</attribute>
|
| <!--
| Number of milliseconds to wait until all responses for a
| synchronous call have been received.
| -->
| <attribute name="SyncReplTimeout">20000</attribute>
|
| <!-- Max number of milliseconds to wait for a lock acquisition -->
| <attribute name="LockAcquisitionTimeout">15000</attribute>
|
|
| <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
| <!-- Specific eviction policy configurations. This is LRU -->
| <attribute name="EvictionPolicyConfig">
| <config>
| <attribute name="wakeUpIntervalSeconds">300</attribute>
| <!-- Cache wide default -->
|
| <region name="/command_image/">
| <attribute name="maxNodes">100</attribute>
| <attribute name="timeToLiveSeconds">8</attribute>
| <attribute name="maxAgeSeconds">10</attribute>
| </region>
|
| <region name="/command_photo/">
| <attribute name="maxNodes">100</attribute>
| <attribute name="timeToLiveSeconds">8</attribute>
| <attribute name="maxAgeSeconds">10</attribute>
| </region>
|
| <region name="/command_mixte/">
| <attribute name="maxNodes">100</attribute>
| <attribute name="timeToLiveSeconds">8</attribute>
| <attribute name="maxAgeSeconds">10</attribute>
| </region>
| </config>
| </attribute>
|
|
| <!--
| Indicate whether to use region based marshalling or not. Set this to true if you are running under a scoped
| class loader, e.g., inside an application server. Default is "false".
| -->
| <attribute name="UseRegionBasedMarshalling">true</attribute>
| <attribute name="CacheLoaderConfiguration">
| <config>
| <passivation>true</passivation>
| <preload></preload>
| <cacheloader>
| <class>org.jboss.cache.loader.JDBCExtendedCacheLoader</class>
| <!-- same as the old CacheLoaderConfig attribute -->
| <properties>
| cache.jdbc.table.name=jbosscache
| cache.jdbc.table.create=true
| cache.jdbc.table.drop=false
| cache.jdbc.table.primarykey=jbosscache_pk
| cache.jdbc.fqn.column=fqn
| cache.jdbc.fqn.type=varchar(255)
| cache.jdbc.node.column=node
| cache.jdbc.node.type=VARBINARY(MAX)
| cache.jdbc.parent.column=parent
| cache.jdbc.driver=net.sourceforge.jtds.jdbc.Driver
| cache.jdbc.url=jdbc:jtds:sqlserver://192.168.1.74:1433/MappingCache
| cache.jdbc.user
| cache.jdbc.password
| </properties>
| <!-- whether the cache loader writes are asynchronous -->
| <async>false</async>
| <!-- only one cache loader in the chain may set fetchPersistentState to true.
| An exception is thrown if more than one cache loader sets this to true. -->
| <fetchPersistentState>true</fetchPersistentState>
| <!-- determines whether this cache loader ignores writes - defaults to false. -->
| <ignoreModifications>false</ignoreModifications>
| <!-- if set to true, purges the contents of this cache loader when the cache starts up.
| Defaults to false. -->
| <purgeOnStartup>false</purgeOnStartup>
| </cacheloader>
| </config>
| </attribute>
| </mbean>
|
| <mbean code="org.jboss.invocation.jrmp.server.JRMPProxyFactory"
| name="mydomain:service=proxyFactory,type=jrmp,target=factory">
| <attribute name="InvokerName">jboss:service=invoker,type=jrmp</attribute>
| <attribute name="TargetName">jboss.cache:service=TreeCache</attribute>
| <attribute name="JndiName">MyCache</attribute>
| <attribute name="InvokeTargetMethod">true</attribute>
| <attribute name="ExportedInterface">org.jboss.cache.TreeCacheMBean</attribute>
| <attribute name="ClientInterceptors">
| <interceptors>
| <interceptor>org.jboss.proxy.ClientMethodInterceptor</interceptor>
| <interceptor>org.jboss.proxy.SecurityInterceptor</interceptor>
| <interceptor>org.jboss.invocation.InvokerInterceptor</interceptor>
| </interceptors>
| </attribute>
| <depends>jboss:service=invoker,type=jrmp</depends>
| <depends>jboss.cache:service=TreeCache</depends>
| </mbean>
| </server>
|
In Tomcat, i can bind to the TreeCache with jndi in my ServletContextListener. But when Tomcat execute this line
| treecache.registerClassLoader("/command_image/", Thread.currentThread().getContextClassLoader());
|
an exception is thrown: ERROR 2007-04-04 17:49:54,078 com.marketip.cache.util.TreeCacheSingleton -
| java.lang.reflect.UndeclaredThrowableException
| at $Proxy0.registerClassLoader(Unknown Source)
| at com.marketip.cache.util.TreeCacheSingleton.init(TreeCacheSingleton.java:45)
| at com.marketip.cache.listener.CacheControlListener.contextInitialized(CacheControlListener.java:39)
| at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3729)
| at org.apache.catalina.core.StandardContext.start(StandardContext.java:4187)
| at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
| at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
| at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
| at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:904)
| at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:867)
| at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
| at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
| at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
| at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
| at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
| at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
| at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
| at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
| at org.apache.catalina.core.StandardService.start(StandardService.java:450)
| at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
| at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
| at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
| Caused by: java.rmi.MarshalException: error marshalling arguments; nested exception is:
| java.io.NotSerializableException: org.apache.catalina.loader.WebappClassLoader
| at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:122)
| at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)
| at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:133)
| at org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:365)
| at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:197)
| at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:70)
| at org.jboss.proxy.ClientMethodInterceptor.invoke(ClientMethodInterceptor.java:74)
| at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:100)
| ... 27 more
| Caused by: java.io.NotSerializableException: org.apache.catalina.loader.WebappClassLoader
| at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
| at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
| at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
| at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
| at org.jboss.invocation.MarshalledValue.<init>(MarshalledValue.java:70)
| at org.jboss.invocation.MarshalledInvocation.createMarshalledValue(MarshalledInvocation.java:632)
| at org.jboss.invocation.MarshalledInvocation.writeExternal(MarshalledInvocation.java:570)
| at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1307)
| at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
| at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
| at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
| at sun.rmi.server.UnicastRef.marshalValue(UnicastRef.java:258)
| at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:117)
| ... 34 more
|
Here is the complete code executed in order to bind to TreeCache:
| Properties props = new Properties();
| props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
| props.setProperty("java.naming.provider.url", "jnp://localhost:1099");
| props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
| InitialContext ctx=new InitialContext(props);
| treecache = (TreeCacheMBean)ctx.lookup("MyCache");
| treecache.registerClassLoader("/command_image/", Thread.currentThread().getContextClassLoader());
| isInited = true;
|
Could someone help me?
What is wrong in my config or in my code?
Thank you in advance.
PHS
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