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POInitializing Corba notification service in java successfully but cannot get any events in linux but it's done in windows
 

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  1. POInitializing Corba notification service in java successfully but cannot get any events in linux but it's done in windows
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    <p>I got a headache about a freaky error when i'm testing my application written in Java. The problem is here: I've written my application used CORBA connection technology. It's an CORBA client application module. In windows environment, the events was pushed successfully but in linux (both redhat and ubuntu) it wasn't. However, it's so freaky that i can call any CORBA functions and get the returned data exactly. I debugged my code, and saw that the initialization of CORBA connection and notification service was successful. In Linux OS, the firewall was disabled and the port 12002 was unused by any applications. It has no any exceptions here. So, could you explain for me what the reason can be here. I have less experience about CORBA. It's so complicated for newbie like me. Help me, please!</p> <p>P/s: + The initialize code is below:</p> <pre><code> Properties props = new Properties(); /*props.setProperty("borland.enterprise.licenseDefaultDir", "C:/Borland/VisiBroker/license");*/ props.setProperty("org.omg.CORBA.ORBClass", "com.inprise.vbroker.orb.ORB"); props.setProperty("org.omg.CORBA.ORBSingletonClass", "com.inprise.vbroker.orb.ORBSingleton"); props.setProperty("javax.rmi.CORBA.StubClass", "com.inprise.vbroker.rmi.CORBA.StubImpl"); props.setProperty("javax.rmi.CORBA.UtilClass", "com.inprise.vbroker.rmi.CORBA.UtilImpl"); props.setProperty("javax.rmi.CORBA.PortableRemoteObjectClass", "com.inprise.vbroker.rmi.CORBA.PortableRemoteObjectImpl"); props.setProperty("vbroker.agent.enableLocator", "false"); props.setProperty("vbroker.orb.initRef", "NotificationService=corbaloc::x.x.x.x:12002/NotificationService"); try { System.out.println("orb = org.omg.CORBA.ORB.init(new String[0], props);"); orb = org.omg.CORBA.ORB.init(new String[0], props); } catch (Exception e) { System.out.println("Fail initial orb for Noti-Service.."+e); System.exit(1); } try { org.omg.CORBA.Object poa = orb.resolve_initial_references("RootPOA"); rootPoa = POAHelper.narrow(poa); } catch (org.omg.CORBA.ORBPackage.InvalidName e) { System.out.println("Can't get RootPOA"+ e); System.exit(1); } try { rootPoa.the_POAManager().activate(); System.out.println("rootPoa.the_POAManager().activate();"); } catch (org.omg.PortableServer.POAManagerPackage.AdapterInactive ex) { System.out.println("Can't activate POAManager"+ex); System.exit(1); } Runtime.getRuntime().addShutdownHook(new Thread(new ShutdownHook(orb))); Thread thread = new Thread() { public void run() { orb.run(); } }; thread.setName("OpenFusion ORB thread"); thread.start(); </code></pre> <ul> <li><p>The method getObject():</p> <p>private StructuredPushConsumer getObject() { StructuredPushConsumer serverObj = null;</p> <pre><code> org.omg.PortableServer.Servant servant = new StructuredPushConsumerPOATie(this, rootPoa); try { org.omg.CORBA.Object ref = rootPoa.servant_to_reference(servant); serverObj = StructuredPushConsumerHelper.narrow(ref); } catch (ServantNotActive e) { System.out.println("Unexpected Exception: "+e); System.exit(1); } catch (WrongPolicy e) { System.out.println("Unexpected Exception: "+e); System.exit(1); } return serverObj; } </code></pre></li> <li><p>The connect() method:</p> <pre><code> public void connect() { /* Defines the type of proxy required */ ClientType ctype = ClientType.STRUCTURED_EVENT; /* Holder to hold the proxy id */ org.omg.CORBA.IntHolder pid = new org.omg.CORBA.IntHolder(); /* Proxy supplier variable */ ProxySupplier proxySupplier = null; /* Obtain the consumer admin object reference */ ConsumerAdmin admin = channel.default_consumer_admin(); try { /* obtain a structured push supplier object reference. */ proxySupplier = ((ConsumerAdminOperations) admin).obtain_notification_push_supplier(ctype, pid); System.out.println("proxySupplier = ((ConsumerAdminOperations) admin).obtain_notification_push_supplier(ctype, pid);"); } catch (AdminLimitExceeded ex) { /* * Thrown if the admin object is unable to have any more proxy suppliers associated with it. */ System.err.println("Maximum number of proxies exceeded!"); System.exit(1); } /* Narrow the proxy supplier to a Structured Proxy Push Supplier */ proxy = StructuredProxyPushSupplierHelper.narrow(proxySupplier); try { /* connect the consumer to the proxy */ proxy.connect_structured_push_consumer(getObject()); System.out.println("proxy.connect_structured_push_consumer(getObject());"); } catch (AlreadyConnected e) { /* * This exception is thrown if a consumer is already connected to this proxy. This should not be thrown because the proxy has just been created. */ System.err.println("Already connected!"); System.exit(1); } catch (TypeError e) { /* * This exception is thrown if you attempt to connect a sequenced consumer to a structured proxy or vice versa. */ System.err.println("Type error!"); System.exit(1); } </code></pre> <p>}</p></li> <li><p>The disconnect() method:</p> <pre><code>public void disconnect() { if (proxy != null) { System.out.println("Disconnected!"); } } </code></pre></li> </ul>
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    1. USDzung Nguyen
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    1. COcould you please provide more details about your application deployment? What exactly is your problem? the network connectivity?
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      1. POInitializing Corba notification service in java successfully but cannot get any events in linux but it's done in windows
      1. UStuergeist
    2. COWhen i was developing my Java desktop application in windows, it could get any structured events from Corba server. But when i run my code and debugged in linux (using eclipse), it didn't get any pushed events from Corba server module. The notification service was listening at port 12002, and the firewall was disabled.
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      1. POInitializing Corba notification service in java successfully but cannot get any events in linux but it's done in windows
      1. USDzung Nguyen
    3. COAnd you do not get any errors?
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      1. POInitializing Corba notification service in java successfully but cannot get any events in linux but it's done in windows
      1. UStuergeist
 

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