SIMON

Hallo Alex,

ich und meine Freunde haben folgendes Problem. Wir versuchen gerade (ich zweifle gerade ein bisschen dadran das das so ohne Probleme möglich ist) Objekte die wir via Hibernate aus einer Datenbank bekommen von einem Server mit SIMON an einen Client zu senden. Das Problem: Bei der Übertragung einiger Objekte kommt es zu seltsamen SIMON-Exceptions die wir uns nicht zu 100% erklären können. Hier mal der Stacktrace unseres Clients:

  130.01.2012 23:59:44 de.root1.simon.Dispatcher exceptionCaught
  2SCHWERWIEGEND: exception Caught. session=0x00000002. Exception
  3 org.apache.mina.filter.codec.ProtocolEncoderException: java.lang.NullPointerException
  4    at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:355)
  5    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:509)
  6    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1400(DefaultIoFilterChain.java:46)
  7    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:808)
  8    at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.filterWrite(DefaultIoFilterChain.java:734)
  9    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:509)
 10    at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireFilterWrite(DefaultIoFilterChain.java:501)
 11    at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:490)
 12    at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:435)
 13    at de.root1.simon.codec.base.AbstractMessageDecoder.decode(AbstractMessageDecoder.java:116)
 14    at org.apache.mina.filter.codec.demux.DemuxingProtocolDecoder.doDecode(DemuxingProtocolDecoder.java:178)
 15    at org.apache.mina.filter.codec.CumulativeProtocolDecoder.decode(CumulativeProtocolDecoder.java:178)
 16    at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:241)
 17    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 18    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
 19    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
 20    at org.apache.mina.filter.ssl.SslHandler.flushScheduledEvents(SslHandler.java:320)
 21    at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:506)
 22    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 23    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
 24    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
 25    at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:119)
 26    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 27    at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
 28    at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:693)
 29    at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:646)
 30    at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:635)
 31    at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:67)
 32    at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1079)
 33    at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
 34    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 35    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 36    at java.lang.Thread.run(Thread.java:619)
 37Caused by: java.lang.NullPointerException
 38    at org.apache.mina.core.buffer.AbstractIoBuffer.putPrefixedString(AbstractIoBuffer.java:1820)
 39    at org.apache.mina.core.buffer.AbstractIoBuffer.putPrefixedString(AbstractIoBuffer.java:1795)
 40    at org.apache.mina.core.buffer.AbstractIoBuffer.putPrefixedString(AbstractIoBuffer.java:1776)
 41    at de.root1.simon.codec.base.MsgErrorEncoder.encodeBody(MsgErrorEncoder.java:54)
 42    at de.root1.simon.codec.base.MsgErrorEncoder.encodeBody(MsgErrorEncoder.java:38)
 43    at de.root1.simon.codec.base.AbstractMessageEncoder.putMessageToBuffer(AbstractMessageEncoder.java:105)
 44    at de.root1.simon.codec.base.AbstractMessageEncoder.encode(AbstractMessageEncoder.java:73)
 45    at de.root1.simon.codec.base.AbstractMessageEncoder.encode(AbstractMessageEncoder.java:38)
 46    at org.apache.mina.filter.codec.demux.DemuxingProtocolEncoder.encode(DemuxingProtocolEncoder.java:137)
 47    at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:322)
 48    ... 32 more
 49
 5030.01.2012 23:59:44 de.root1.simon.Dispatcher exceptionCaught
 51SCHWERWIEGEND: exception Caught. session=0x00000002. Exception
 52 org.apache.mina.filter.codec.ProtocolDecoderException: Message decoder returned NOT_OK. (Hexdump: 03 00 00 00 0F 00 00 01 B8 00 00 01 B4 AC ED 00 05 73 72 01 00 22 63 6F 6D 6D 6F 6E 2E 64 61 74 61 6D 6F 64 65 6C 2E 50 65 72 73 6F 6E 49 6E 66 6F 72 6D 61 74 69 6F 6E 78 70 00 00 00 01 74 00 0E 61 64 6D 69 6E 40 61 64 6D 69 6E 2E 64 65 74 00 04 54 65 73 74 73 72 01 00 26 6F 72 67 2E 68 69 62 65 72 6E 61 74 65 2E 63 6F 6C 6C 65 63 74 69 6F 6E 2E 50 65 72 73 69 73 74 65 6E 74 53 65 74 78 72 01 00 35 6F 72 67 2E 68 69 62 65 72 6E 61 74 65 2E 63 6F 6C 6C 65 63 74 69 6F 6E 2E 41 62 73 74 72 61 63 74 50 65 72 73 69 73 74 65 6E 74 43 6F 6C 6C 65 63 74 69 6F 6E 78 70 FF FF FF FF 00 01 73 72 01 00 11 6A 61 76 61 2E 6C 61 6E 67 2E 49 6E 74 65 67 65 72 78 72 01 00 10 6A 61 76 61 2E 6C 61 6E 67 2E 4E 75 6D 62 65 72 78 70 00 00 00 01 71 00 7E 00 01 74 00 29 63 6F 6D 6D 6F 6E 2E 64 61 74 61 6D 6F 64 65 6C 2E 50 65 72 73 6F 6E 49 6E 66 6F 72 6D 61 74 69 6F 6E 2E 67 72 6F 75 70 73 73 72 01 00 11 6A 61 76 61 2E 75 74 69 6C 2E 48 61 73 68 4D 61 70 78 70 3F 40 00 00 00 00 00 00 77 08 00 00 00 01 00 00 00 00 78 73 72 01 00 11 6A 61 76 61 2E 75 74 69 6C 2E 48 61 73 68 53 65 74 78 70 77 0C 00 00 00 10 3F 40 00 00 00 00 00 00 78 74 00 04 54 65 73 74 7E 72 01 00 19 63 6F 6D 6D 6F 6E 2E 64 61 74 61 6D 6F 64 65 6C 2E 55 73 65 72 52 6F 6C 65 78 72 01 00 0E 6A 61 76 61 2E 6C 61 6E 67 2E 45 6E 75 6D 78 70 74 00 0D 41 44 4D 49 4E 49 53 54 52 41 54 4F 52)
 53    at org.apache.mina.filter.codec.demux.DemuxingProtocolDecoder.doDecode(DemuxingProtocolDecoder.java:187)
 54    at org.apache.mina.filter.codec.CumulativeProtocolDecoder.decode(CumulativeProtocolDecoder.java:178)
 55    at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:241)
 56    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 57    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
 58    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
 59    at org.apache.mina.filter.ssl.SslHandler.flushScheduledEvents(SslHandler.java:320)
 60    at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:506)
 61    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 62    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
 63    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
 64    at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:119)
 65    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
 66    at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
 67    at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:693)
 68    at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:646)
 69    at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:635)
 70    at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:67)
 71    at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1079)
 72    at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
 73    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 74    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 75    at java.lang.Thread.run(Thread.java:619)
 76
 77Exception in thread "AWT-EventQueue-1" de.root1.simon.exceptions.SimonRemoteException: session was closed. sessionid=0x00000002
 78    at de.root1.simon.Dispatcher.interruptWaitingRequests(Dispatcher.java:761)
 79    at de.root1.simon.Dispatcher.sessionClosed(Dispatcher.java:812)
 80    at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.sessionClosed(DefaultIoFilterChain.java:665)
 81    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextSessionClosed(DefaultIoFilterChain.java:395)
 82    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$900(DefaultIoFilterChain.java:46)
 83    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.sessionClosed(DefaultIoFilterChain.java:781)
 84    at org.apache.mina.filter.codec.ProtocolCodecFilter.sessionClosed(ProtocolCodecFilter.java:387)
 85    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextSessionClosed(DefaultIoFilterChain.java:395)
 86    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$900(DefaultIoFilterChain.java:46)
 87    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.sessionClosed(DefaultIoFilterChain.java:781)
 88    at org.apache.mina.filter.ssl.SslFilter.sessionClosed(SslFilter.java:452)
 89    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextSessionClosed(DefaultIoFilterChain.java:395)
 90    at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$900(DefaultIoFilterChain.java:46)
 91    at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.sessionClosed(DefaultIoFilterChain.java:781)
 92    at org.apache.mina.core.filterchain.IoFilterAdapter.sessionClosed(IoFilterAdapter.java:95)
 93    at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextSessionClosed(DefaultIoFilterChain.java:395)
 94    at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireSessionClosed(DefaultIoFilterChain.java:388)
 95    at org.apache.mina.core.service.IoServiceListenerSupport.fireSessionDestroyed(IoServiceListenerSupport.java:244)
 96    at org.apache.mina.core.polling.AbstractPollingIoProcessor.removeNow(AbstractPollingIoProcessor.java:580)
 97    at org.apache.mina.core.polling.AbstractPollingIoProcessor.removeSessions(AbstractPollingIoProcessor.java:540)
 98    at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$600(AbstractPollingIoProcessor.java:67)
 99    at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1087)
100    at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
101    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
102    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
103    at java.lang.Thread.run(Thread.java:619)

Hättest du eine Idee woran das liegen könnte und hast du zufällig Erfahrung damit ob das überhaupt so ohne Probleme möglich ist die Daten von Hibernate mit SIMON zu übertragen? Unser erster Verdacht ist das etwas mit der Serialisierung schief geht, aber irgendwie lässt sich aus der Exception nicht so wirklich genau ableiten was da genau schiefgelaufen ist...

Vielen Dank schonmal und viele Grüße!
Fabian