Problem with EventObserver

in WebNMS Framework • 9 years ago

Hello.

I am working with WebNMS 5.2 and I am interested in writing an application that will receive events using the EventObserver interface. I began testing the snippet described at the EventObserver javadoc. The program registers with the EventAPI but the update method never announces the Observer received an event.

I noticed that the nmserr.txt log file is sending the following exception; seems that a class is misnamed:

[17 Feb 2014 05:07:54:225] EVENTERR: Remote object error:java.rmi.ServerError: Error occurred in server thread; nested exception is:

java.lang.NoClassDefFoundError: Lcom/adventnet/snmp/snmp2/SnmpPDU; at:

[17 Feb 2014 05:07:54:226] EVENTERR:

java.rmi.ServerError: Error occurred in server thread; nested exception is:

java.lang.NoClassDefFoundError: Lcom/adventnet/snmp/snmp2/SnmpPDU;

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)

at sun.rmi.transport.Transport$1.run(Transport.java:153)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:149)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)

at java.lang.Thread.run(Thread.java:595)

at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)

at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)

at sun.rmi.server.UnicastRef.invoke(Unknown Source)

at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source)

at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)

at $Proxy44.update(Unknown Source)

at com.adventnet.nms.eventdb.EventDispatcher.update(EventDispatcher.java:49)

at com.adventnet.nms.eventdb.EventObservable.update(EventObservable.java:139)

at java.util.Observable.notifyObservers(Unknown Source)

at com.adventnet.nms.store.Notifier.sendNotification(Notifier.java:189)

at com.adventnet.nms.store.Notifier.checkNotification(Notifier.java:172)

at com.adventnet.nms.store.Notifier.notify(Notifier.java:118)

at com.adventnet.nms.eventdb.EventMgr.notifyEventObservers(EventMgr.java:2376)

at com.adventnet.nms.eventdb.EventMgr.run(EventMgr.java:1826)

at com.adventnet.management.scheduler.WorkerThread.run(WorkerThread.java:70)

Caused by: java.lang.NoClassDefFoundError: Lcom/adventnet/snmp/snmp2/SnmpPDU;

at java.lang.Class.getDeclaredFields0(Native Method)

at java.lang.Class.privateGetDeclaredFields(Class.java:2259)

at java.lang.Class.getDeclaredField(Class.java:1852)

at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1582)

at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:52)

at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:408)

at java.security.AccessController.doPrivileged(Native Method)

at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:400)

at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:297)

at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:531)

at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552)

at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)

at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)

at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:290)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:279)

at sun.rmi.transport.Transport$1.run(Transport.java:153)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:149)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)

at java.lang.Thread.run(Thread.java:595)

[17 Feb 2014 05:08:24:484] EVENTERR: Remote object error:java.rmi.ServerError: Error occurred in server thread; nested exception is:

java.lang.NoClassDefFoundError: Lcom/adventnet/snmp/snmp2/SnmpPDU; at:

[17 Feb 2014 05:08:24:490] EVENTERR: