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Netty + Google protobuf causing class loader issue?
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created by <a href="https://community.jboss.org/people/merdmann">Michael Erdmann</a> in <i>JBoss Web Services</i> - <a href="https://community.jboss.org/message/785191#785191">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hallo,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>i am trying to use netty together with google protbuf in order to implememt a server running on the Jboss 7.1.</p><p>When the client connects to the server i get the following exception:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1:10:34,810 WARNING [org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink] (New I/O server boss #64 ([id: 0x035e9313, /0.0.0.0:8887])) Failed to accept a connection.: <strong>java.lang.NoClassDefFoundError: com/google/protobuf/ExtensionRegistryLite</strong></p><p>          at site.boavista.jboss.view.NettyServer$1.getPipeline(NettyServer.java:65) [classes:]</p><p>          at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink$Boss.registerAcceptedChannel(NioServerSocketPipelineSink.java:276) [netty-3.2.6.Final.jar:]</p><p>          at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink$Boss.run(NioServerSocketPipelineSink.java:246) [netty-3.2.6.Final.jar:]</p><p>          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.6.0_24]</p><p>          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.6.0_24]</p><p>          at java.lang.Thread.run(Thread.java:679) [rt.jar:1.6.0_24]</p><p>Caused by: java.lang.ClassNotFoundException: com.google.protobuf.ExtensionRegistryLite from [Module "org.jboss.netty:main" from local module loader @781f6226 (roots: /opt/jboss-as-7.1.1.Final/modules)]</p><p>          at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)</p><p>          at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)</p><p>          ... 6 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The exception indicates that the class loader does not see the protobuf jar i am deploying together with my application code. Is there amy</p><p>way to make my libraries kown to the server class loader?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have put the sources here:</p><p><a class="jive-link-external-small" href="https://github.com/merdmann/MyCommunityJBoss">https://github.com/merdmann/MyCommunityJBoss</a></p><p>the netty part can be found in  the package site.boavista.view.jboss.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Regards</p><p>   /Michael</p></div>
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