7 Replies Latest reply on Jun 4, 2014 11:49 AM by genman

Extending the script plugin

raylite3 May 30, 2014 11:15 AM

Hello, I want to create a custom script plugin to monitor metrics from my application. So I created a rhq-plugin.xml (like attached) and deployed it.

But when I try to add my monitor, I see the following exception saying that the resource cannot be imported. Appreciate any pointers, thanks.

java.lang.RuntimeException:[1401462893152] javax.ejb.EJBException:java.lang.RuntimeException: Error adding [ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]] Resource to inventory as a child of Resource[id=10001, uuid=e8d2ab5f-f5ec-47f9-93aa-359a497c394a, type={Platforms}Windows, key=kanantha, name=kanantha, parent=<null>, version=Windows 6.1] - cause: java.lang.IllegalStateException: Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server] -> java.lang.RuntimeException:Error adding [ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]] Resource to inventory as a child of Resource[id=10001, uuid=e8d2ab5f-f5ec-47f9-93aa-359a497c394a, type={Platforms}Windows, key=kanantha, name=kanantha, parent=<null>, version=Windows 6.1] - cause: java.lang.IllegalStateException: Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server] -> java.lang.IllegalStateException:Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]

--- STACK TRACE FOLLOWS ---

[1401462893152] javax.ejb.EJBException:java.lang.RuntimeException: Error adding [ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]] Resource to inventory as a child of Resource[id=10001, uuid=e8d2ab5f-f5ec-47f9-93aa-359a497c394a, type={Platforms}Windows, key=kanantha, name=kanantha, parent=<null>, version=Windows 6.1] - cause: java.lang.IllegalStateException: Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server] -> java.lang.RuntimeException:Error adding [ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]] Resource to inventory as a child of Resource[id=10001, uuid=e8d2ab5f-f5ec-47f9-93aa-359a497c394a, type={Platforms}Windows, key=kanantha, name=kanantha, parent=<null>, version=Windows 6.1] - cause: java.lang.IllegalStateException: Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server] -> java.lang.IllegalStateException:Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]

at Unknown.Throwable_0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@22)

at Unknown.Exception_0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@15)

at Unknown.RuntimeException_0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@15)

at Unknown.instantiate_32(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@10)

at Unknown.$instantiate_0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@35)

at Unknown.$instantiate(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@36)

at Unknown.$readObject(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@119)

at Unknown.$onResponseReceived(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@453)

at Unknown.onResponseReceived_6(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@31)

at Unknown.$fireOnResponseReceived(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@14)

at Unknown.onReadyStateChange_0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@51)

at Unknown.<anonymous>(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@13)

at Unknown.apply(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@21)

at Unknown.entry0(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@16)

at Unknown.<anonymous>(http://localhost:7080/coregui/org.rhq.coregui.CoreGUI/565E0854639ECD736C38967C4D7173DE.cache.html@14)

rhq-plugin.xml 9.7 KB

1. Re: Extending the script plugin

mazz May 30, 2014 11:29 AM (in response to raylite3)

Go to your server.log and match up that log id of 1401462893152 (search for that ID in server.log) to get the "real" stack trace. That might provide some additional info - both the stack trace and perhaps the messages just above the exception might help narrow the issue.
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2. Re: Extending the script plugin

raylite3 May 30, 2014 2:05 PM (in response to mazz)

The root cause says that it is an unknown resource type.

Caused by: java.lang.IllegalStateException: Server specified unknown Resource type: ResourceType[id=10639, name=Script, plugin=my-monitor, category=Server]
at org.rhq.core.pc.inventory.InventoryManager.manuallyAddResource(InventoryManager.java:806)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_17]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_17]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_17]
at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_17]
at org.rhq.enterprise.communications.command.impl.remotepojo.server.RemotePojoInvocationCommandService.execute(RemotePojoInvocationCommandService.java:184) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source) [:1.7.0_17]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_17]
at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:111) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:45) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:235) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252) [rt.jar:1.7.0_17]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:792) [rt.jar:1.7.0_17]
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:305) [rt.jar:1.7.0_17]
at com.sun.proxy.$Proxy0.execute(Unknown Source)
at org.rhq.enterprise.communications.command.server.CommandProcessor.handleIncomingInvocationRequest(CommandProcessor.java:290) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at org.rhq.enterprise.communications.command.server.CommandProcessor.invoke(CommandProcessor.java:184) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:967) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:798) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:751) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:586) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:234) [jboss-remoting-2.5.4.SP5.jar:]
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3. Re: Extending the script plugin

mazz May 30, 2014 2:09 PM (in response to raylite3)

That stack trace means your agent does not have your new plugin successfully deployed in it. After you upload your new plugin in the server, you have to tell your agents about the new plugin (agents won't download plugins automatically - though I think in the future someone asked for that to happen automatically, but that's an enhancement request that hasn't been implemented yet).

So your agent has to either a) be restarted so its startup initialization will download new plugins or b) invoke the operation on the agent to download plugins or c) from the agent prompt invoke "plugins update".

Its easiest if you just restart your agents. If you have lots of agents, you can put them in inventory, put them in a compatible group, and run a group operation to tell all of them to update their plugins.
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4. Re: Extending the script plugin

raylite3 May 30, 2014 8:45 PM (in response to mazz)
Thanks, I got past that error. But I am seeing a NullPointerException now and I don't get much else from the stack trace. Appreciate any pointers, thanks.

17:38:20,127 WARN [org.rhq.coregui.server.gwt.ResourceGWTServiceImpl] (http-/0.0.0.0:7080-1) Sending exception to client: [1401496700127] : org.rhq.core.clientapi.agent.PluginContainerException: Failed to add resource with type [MyCache] and parent resource id [10001]
at org.rhq.core.pc.inventory.InventoryManager.manuallyAddResource(InventoryManager.java:979)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_17]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_17]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_17]
at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_17]
at org.rhq.enterprise.communications.command.impl.remotepojo.server.RemotePojoInvocationCommandService.execute(RemotePojoInvocationCommandService.java:184) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) [:1.7.0_17]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_17]
at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:111) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:45) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:235) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252) [rt.jar:1.7.0_17]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) [rt.jar:1.7.0_17]
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:792) [rt.jar:1.7.0_17]
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:305) [rt.jar:1.7.0_17]
at com.sun.proxy.$Proxy0.execute(Unknown Source)
at org.rhq.enterprise.communications.command.server.CommandProcessor.handleIncomingInvocationRequest(CommandProcessor.java:290) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at org.rhq.enterprise.communications.command.server.CommandProcessor.invoke(CommandProcessor.java:184) [rhq-enterprise-comm-4.9.0.JON320GA.jar:4.9.0.JON320GA]
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:967) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:798) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:751) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:586) [jboss-remoting-2.5.4.SP5.jar:]
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:234) [jboss-remoting-2.5.4.SP5.jar:]
Caused by: java.lang.NullPointerException: [Warning] null
... 25 more

rhq-plugin.xml 9.6 KB
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5. Re: Extending the script plugin

genman Jun 2, 2014 5:54 PM (in response to raylite3)

I'm guessing the interesting part of the stack trace is later. Also, you might want to look at the agent log file as well.
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6. Re: Extending the script plugin

raylite3 Jun 2, 2014 6:13 PM (in response to genman)

The agent log was more helpful.

The NPE occurs here in ClassLoaderManager.obtainDiscoveryClassLoader(String pluginName, ClassLoader parentClassLoader)

String hash = pluginName + '-' + Integer.toHexString(parentClassLoader.hashCode());

So the parentClassLoader is null I suppose. Which in turn means I didn't setup something in my plugin descriptor perhaps?
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7. Re: Extending the script plugin

genman Jun 4, 2014 11:49 AM (in response to raylite3)

Is the script plugin deployed? Is it enabled? Do you see the .jar file on the agent side? I don't know much about how this could happen, it does seem like a bug.
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