Re: MulticastDiscoveryAgent

Wed, 14 Apr 2010 05:01:34 -0700 

On 14.04.2010 12:44, Andy Gumbrecht wrote:
Started to get this after pulling latest trunk. Am I missing something? It seems that 'init' is not getting called (or fails) and 'tracker' is null. 


3883 [main] ERROR OpenEJB.server.remote  - Cannot instantiate the 
service class 
org.apache.openejb.server.discovery.MulticastDiscoveryAgent. Received 
error: java.lang.NullPointerException null

java.lang.NullPointerException

    at 
org.apache.openejb.server.discovery.MulticastDiscoveryAgent.setDiscoveryListener(MulticastDiscoveryAgent.java:96) 

    at 
org.apache.openejb.server.DiscoveryRegistry.addDiscoveryAgent(DiscoveryRegistry.java:68) 

    at 
org.apache.openejb.server.ServiceManager.initServer(ServiceManager.java:136) 

    at 
org.apache.openejb.server.ServiceManager.initServers(ServiceManager.java:76) 

    at 
org.apache.openejb.server.SimpleServiceManager.init(SimpleServiceManager.java:121) 


    at org.apache.openejb.server.Server.init(Server.java:72)
    at org.apache.openejb.server.Main.initServer(Main.java:155)
    at org.apache.openejb.server.Main.main(Main.java:128)
    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:597)
    at org.apache.openejb.cli.MainImpl.main(MainImpl.java:152)
    at org.apache.openejb.cli.Bootstrap.main(Bootstrap.java:103)

3904 [main] ERROR OpenEJB.server  - Cannot register service 'ejbd' 
with DiscoveryAgent.

java.lang.NullPointerException

    at 
org.apache.openejb.server.discovery.MulticastDiscoveryAgent.registerService(MulticastDiscoveryAgent.java:100) 

    at 
org.apache.openejb.server.DiscoveryRegistry.registerService(DiscoveryRegistry.java:84) 

    at 
org.apache.openejb.server.ServiceDaemon.start(ServiceDaemon.java:180)
    at 
org.apache.openejb.server.SimpleServiceManager.start(SimpleServiceManager.java:138) 

    at 
org.apache.openejb.server.ServiceManager.start(ServiceManager.java:212)

    at org.apache.openejb.server.Server.start(Server.java:92)
    at org.apache.openejb.server.Main.initServer(Main.java:156)
    at org.apache.openejb.server.Main.main(Main.java:128)
    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:597)
    at org.apache.openejb.cli.MainImpl.main(MainImpl.java:152)
    at org.apache.openejb.cli.Bootstrap.main(Bootstrap.java:103)

4196 [main] ERROR OpenEJB.server  - Cannot register service 'ejbd' 
with DiscoveryAgent.

java.lang.NullPointerException

    at 
org.apache.openejb.server.discovery.MulticastDiscoveryAgent.registerService(MulticastDiscoveryAgent.java:100) 

    at 
org.apache.openejb.server.DiscoveryRegistry.registerService(DiscoveryRegistry.java:84) 

    at 
org.apache.openejb.server.ServiceDaemon.start(ServiceDaemon.java:180)
    at 
org.apache.openejb.server.SimpleServiceManager.start(SimpleServiceManager.java:138) 

    at 
org.apache.openejb.server.ServiceManager.start(ServiceManager.java:212)

    at org.apache.openejb.server.Server.start(Server.java:92)
    at org.apache.openejb.server.Main.initServer(Main.java:156)
    at org.apache.openejb.server.Main.main(Main.java:128)
    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:597)
    at org.apache.openejb.cli.MainImpl.main(MainImpl.java:152)
    at org.apache.openejb.cli.Bootstrap.main(Bootstrap.java:103)


Andy.



Adding a default constructor that calls init with empty properties seems 
to fix the issue, but not sure if that would be the correct thing to do.


Andy

--
------------------------------------------------------------------------

*Andy Gumbrecht*
Software Developer
Orpro Vision GmbH
Hefehof 8, 31785, Hameln

Tel +49 (0) 5151 809 44 21
Cell +49 (0) 174 1800 381
Email [email protected]
Web www.orprovision.com


           Orpro Vision GmbH
           Sitz der Gesellschaft: 31785, Hameln
           USt-Id-Nr: DE264453214
           Amtsgericht Hannover HRB204336
           Geschaeftsfuehrer: Roberto Gatti

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