users@glassfish.java.net

Re: [eclipselink-users] Experiments with Glassfish and coordinated caching

From: Mitesh Meswani <Mitesh.Meswani_at_Sun.COM>
Date: Fri, 28 Mar 2008 12:38:22 -0700

Hi rv,

Is there any reason you want to use S1ASCtxFactory? Please follow the
link (https://glassfish.dev.java.net/javaee5/ejb/EJB_FAQ.html) regarding
JMS issues.

Thanks
Mitesh

wintermute_at_tessierashpool.net wrote:
> Hi List,
>
> has anyone succeeded in setting up cache coordination in Glassfish?
> Elllen?
>
> I'm using a session customizer and experimented a bit with RMI and JMS
> coordination. Here's what I did and the results I got.
>
> 1. JMS
>
> I see two approaches, but I'm not sure if both of them are sane.
>
> First approach: Use a single JMS topic, perhaps on the DAS, and
> connect all cluster instances to this topic. I tried this:
>
> RemoteCommandManager rcm = new
> RemoteCommandManager((CommandProcessor)session);
> Hashtable properties = new Hashtable(2);
> properties.put(Context.PROVIDER_URL,"iiop://DAS.devel:3700");
> properties.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.appserv.naming.S1ASCtxFactory");
>
>
> tm.setTopicHostUrl("tcp://DAS.devel:7676");
> tm.setLocalContextProperties(properties);
> tm.setRemoteContextProperties(properties);
> tm.setTopicName("jms/cachecoordination");
> tm.setTopicConnectionFactoryName("jms/connectionFactory");
> tm.setUserName("guest");
> tm.setPassword("guest");
>
> rcm.setTransportManager(tm);
> ((DatabaseSession)session).setShouldPropagateChanges(false);
> ((DatabaseSession)session).setCommandManager(rcm);
> rcm.initialize();
>
> This didn't work out at all. For some reason, looking up the remote
> connection factory failed. Took me some time to figure out what was
> going on: Apparently, when Glassfish JARs are on the classpath ,
> Context.PROVIDER_URL is ignored. At least in my case, the lookup
> always went to localhost:3700, no matter what I supplied as
> Context.PROVIDER_URL. So, no luck.
>
> Second approach: Use factories and topics deployed to the cluster and
> do local lookups on the cluster instances, hoping that GF clustering
> will somehow figure out the details of passing messages around in the
> background.
> So I cluster-deployed the connection factory and the topic and
> replaced DAS.devel:3700 with 127.0.0.1:33700 and set the topic host to
> localhost:37676.
>
> Lookup worked , but trying to use the same (clustered) application as
> a client for JMS seems to be a bad idea:
>
> Exception Description: Could not create local JMS connection with
> Topic jms/cachecoordination, Topic Factory jms/connectionFactory, and
> Context properties
> {java.naming.factory.initial=com.sun.appserv.naming.S1ASCtxFactory,
> java.naming.provider.url=iiop://127.0.0.1:33700,
> java.naming.security.principal=guest,
> java.naming.security.credentials=24D77DC031B68CE91A372A5A33219416}
> Internal Exception: com.sun.messaging.jms.JMSException:
> [ADD_CONSUMER_REPLY(15)] [C4036]: A broker error occurred. :[412]
> [B4135]: Cannot add durable consumer null. No ClientID was set on
> connection. user=guest, broker=localhost:37676(36560)
>
> Got it: Same client ID for all cluster instances, different IDs needed
> for durability.
> Unfortunately, I have no idea how to either turn off durability or set
> client IDs.
>
>
> 2. RMI
>
> Let's try RMI then, I thought, and, using code fragments posted to
> this list, came up with this code:
>
> RemoteCommandManager rcm = new
> RemoteCommandManager((CommandProcessor)session);
> rcm.getDiscoveryManager().setMulticastGroupAddress("226.1.2.3");
> rcm.getDiscoveryManager().setMulticastPort(3122);
> rcm.setShouldPropagateAsynchronously(true);
> rcm.getDiscoveryManager().setAnnouncementDelay(5);
> rcm.getTransportManager().setNamingServiceType(TransportManager.REGISTRY_NAMING_SERVICE);
>
> rcm.setUrl("rmi://$HOST:33700");
> rcm.setServerPlatform(session.getServerPlatform());
> ((DatabaseSession)session).setCommandManager(rcm);
> ((DatabaseSession)session).setShouldPropagateChanges(false);
> rcm.initialize();
>
> The session customizer terminates orderly, but after some time, I get
> the following exception:
>
> Exception Description: Could not post connection in local naming
> service under name rmi://192.168.23.12:33700/11657788
> Internal Exception: java.rmi.ConnectIOException: error during JRMP
> connection establishment; nested exception is:
> java.io.EOFException
> at
> org.eclipse.persistence.exceptions.RemoteCommandManagerException.errorBindingConnection(RemoteCommandManagerException.java:87)
>
> at
> org.eclipse.persistence.sessions.coordination.rmi.RMITransportManager.createLocalConnectionInRegistry(RMITransportManager.java:160)
>
> at
> org.eclipse.persistence.sessions.coordination.rmi.RMITransportManager.createLocalConnection(RMITransportManager.java:113)
>
> at
> org.eclipse.persistence.sessions.coordination.DiscoveryManager.run(DiscoveryManager.java:197)
>
> at java.lang.Thread.run(Thread.java:619)
> Caused by: java.rmi.ConnectIOException: error during JRMP connection
> establishment; nested exception is:
> java.io.EOFException
> at
> sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:286)
> at
> sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
> at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
> at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
> at java.rmi.Naming.rebind(Naming.java:160)
> at
> org.eclipse.persistence.sessions.coordination.rmi.RMITransportManager.createLocalConnectionInRegistry(RMITransportManager.java:157)
>
> ... 3 more
> Caused by: java.io.EOFException
> at java.io.DataInputStream.readByte(DataInputStream.java:250)
> at
> sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:228)
> ... 8 more
>
> I'm totally lost here. EOF? Uh? Probably RMI isn't at 3700 at all?
>
>
> Perhaps somebody has already had more success and could help me out.
> I'd prefer the JMS solution in the long term, but for now, RMI would
> also do.
> If not, maybe I have at least documented the current state of things
> in the cache-coordination-with-GF case.
>
>
>
> Kind regards from Berlin,
>
> rv
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