Examples of org.jgroups.Channel

org.jgroups.Channel
A channel represents a group communication endpoint (like BSD datagram sockets). A client joins a group by connecting the channel to a group address and leaves it by disconnecting. Messages sent over the channel are received by all group members that are connected to the same group (that is, all members that have the same group address).
The FSM for a channel is roughly as follows: a channel is created (unconnected). The channel is connected to a group (connected). Messages can now be sent and received. The channel is disconnected from the group (unconnected). The channel could now be connected to a different group again. The channel is closed (closed).
Only a single sender is allowed to be connected to a channel at a time, but there can be more than one channel in an application.
Messages can be sent to the group members using the send method and messages can be received using receive (pull approach).
A channel instance is created using either a ChannelFactory or the public constructor. Each implementation of a channel must provide a subclass of Channel and an implementation of ChannelFactory.
Various degrees of sophistication in message exchange can be achieved using building blocks on top of channels; e.g., light-weight groups, synchronous message invocation, or remote method calls. Channels are on the same abstraction level as sockets, and should really be simple to use. Higher-level abstractions are all built on top of channels. @author Bela Ban @see java.net.DatagramPacket @see java.net.MulticastSocket

        Util.printThreads();
    }


    public void testCreationAndClose() throws Exception {
        System.out.println("-- creating channel1 --");
        Channel c = null;
        c = createChannel();
        c.connect("testCreationAndClose");
        assertTrue("channel open", c.isOpen());
        assertTrue("channel connected", c.isConnected());        
        c.close();        
        assertFalse("channel not connected", c.isConnected());
        c.close();
    }

View Full Code Here

      RuntimeConfig rtcfg = cfg.getRuntimeConfig();


      // Only inject if there isn't already a channel or factory
      if (rtcfg.getMuxChannelFactory() != null && rtcfg.getChannel() != null)
      {
         Channel ch;
         try
         {
            ch = multiplexerService.createMultiplexerChannel(cfg.getMultiplexerStack(), cfg.getClusterName());
         }
         catch (Exception e)

View Full Code Here

      RuntimeConfig rtcfg = cfg.getRuntimeConfig();


      // Only inject if there isn't already a channel or factory
      if (rtcfg.getMuxChannelFactory() == null && rtcfg.getChannel() == null)
      {
         Channel ch;
         try
         {
            ch = multiplexerService.createMultiplexerChannel(cfg.getMultiplexerStack(), cfg.getClusterName());
         }
         catch (Exception e)

View Full Code Here

    * @param members
    * @return
    */
   private List<Address> checkBuddyStatus(List<Address> members)
   {
      Channel ch = configuration.getRuntimeConfig().getChannel();
      View currentView = ch.getView();
      List<Address> deadBuddies = new LinkedList<Address>();
      for (Address a : members) if (!currentView.containsMember(a)) deadBuddies.add(a);
      return deadBuddies;
   }

View Full Code Here

    * @param members
    * @return
    */
   private List<Address> checkBuddyStatus(List<Address> members)
   {
      Channel ch = configuration.getRuntimeConfig().getChannel();
      View currentView = ch.getView();
      List<Address> deadBuddies = new LinkedList<Address>();
      for (Address a : members) if (!currentView.containsMember(a)) deadBuddies.add(a);
      return deadBuddies;
   }

View Full Code Here

      catch (Exception e)
      {
         // normal behaviour
      }


      Channel c = cache.channel; // hold a reference to this since stopService will set this to null in the cache.


      assertFalse("Channel should not have connected!", c.isConnected());
      assertFalse("Channel should not be open", c.isOpen());


      cache.stopService();


      assertFalse("Channel should not have connected!", c.isConnected());
      assertFalse("Channel should not be open", c.isOpen());


      assertNull("Should be null", cache.channel);
   }

View Full Code Here

      catch (Exception e)
      {
         fail("NOT expecting the startService() method to throw an exception");
      }


      Channel c = cache.channel; // hold a reference to this since stopService will set this to null in the cache.


      assertTrue("Channel should have connected!", c.isConnected());
      assertTrue("Channel should be open", c.isOpen());




      cache.stopService();


      assertFalse("Channel should not have connected!", c.isConnected());
      assertFalse("Channel should not be open", c.isOpen());


      assertNull("Should be null", cache.channel);
   }

View Full Code Here

      return values;
   }


   public static DISCARD getDiscardForCache(Cache<?, ?> c) throws Exception {
      JGroupsTransport jgt = (JGroupsTransport) TestingUtil.extractComponent(c, Transport.class);
      Channel ch = jgt.getChannel();
      ProtocolStack ps = ch.getProtocolStack();
      DISCARD discard = new DISCARD();
      ps.insertProtocol(discard, ProtocolStack.ABOVE, TP.class);
      return discard;
   }

View Full Code Here

    * @return a reference to the DELAY instance being used by the JGroups stack
    * @throws Exception
    */
   public static DELAY setDelayForCache(Cache<?, ?> cache, int in_delay_millis, int out_delay_millis) throws Exception {
      JGroupsTransport jgt = (JGroupsTransport) TestingUtil.extractComponent(cache, Transport.class);
      Channel ch = jgt.getChannel();
      ProtocolStack ps = ch.getProtocolStack();
      DELAY delay = (DELAY) ps.findProtocol(DELAY.class);
      if (delay==null) {
         delay = new DELAY();
         ps.insertProtocol(delay, ProtocolStack.ABOVE, TP.class);
      }

View Full Code Here

         SharedLocalYieldingClusterLockManager lockManager = this.lockManagers.get(clusterName);
         
         if (lockManager == null)
         {
            JGroupsTransport transport = (JGroupsTransport) cache.getAdvancedCache().getRpcManager().getTransport();
            Channel channel = transport.getChannel();
            
            CoreGroupCommunicationService gcs = new CoreGroupCommunicationService();
            gcs.setChannel(channel);
            gcs.setScopeId(SCOPE_ID);

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.jgroups.Channel

com.kylin.jgroups.test.underlying.LargeMsgSending

net.sf.hajdbc.distributed.jgroups.JGroupsCommandDispatcher

net.sf.hajdbc.distributed.jgroups.JGroupsCommandDispatcherFactory

org.activemq.transport.jgroups.JGroupsTransportChannelFactory

org.codehaus.activemq.transport.jgroups.JGroupsTransportChannelFactory

org.exoplatform.services.jcr.impl.core.query.ispn.RsyncIndexInfos

org.exoplatform.services.rpc.impl.RPCServiceImpl

org.infinispan.partitionhandling.NumOwnersNodeCrashInSequenceTest

org.infinispan.remoting.jgroups.MissingRpcDispatcherTest

org.infinispan.test.TestingUtil

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.