Examples of org.hornetq.core.cluster.DiscoveryGroup$DiscoveryRunnable

org.hornetq.core.cluster.DiscoveryGroup
This class is used to search for members on the cluster through the opaque interface {@link BroadcastEndpoint}.
There are two current implementations, and that's probably all we will ever need.
We will probably keep both interfaces for a while as UDP is a simple solution requiring no extra dependencies which is suitable for users looking for embedded solutions. @author Tim Fox @author Clebert Suconic
Created 17 Nov 2008 13:21:45


      final InetAddress groupAddress = InetAddress.getByName(DiscoveryTest.address1);
      final int groupPort = getUDPDiscoveryPort();
      final int timeout = 500;


      DiscoveryGroup dg = new DiscoveryGroupImpl(RandomUtil.randomString(),
                                                 RandomUtil.randomString(),
                                                 null,
                                                 groupAddress,
                                                 groupPort,
                                                 timeout);
      dg.setNotificationService(notifService);


      Assert.assertEquals(0, notifListener.getNotifications().size());


      dg.start();


      Assert.assertEquals(1, notifListener.getNotifications().size());
      Notification notif = notifListener.getNotifications().get(0);
      Assert.assertEquals(NotificationType.DISCOVERY_GROUP_STARTED, notif.getType());
      Assert.assertEquals(dg.getName(), notif.getProperties()
                                             .getSimpleStringProperty(new SimpleString("name"))
                                             .toString());


      dg.stop();


      Assert.assertEquals(2, notifListener.getNotifications().size());
      notif = notifListener.getNotifications().get(1);
      Assert.assertEquals(NotificationType.DISCOVERY_GROUP_STOPPED, notif.getType());
      Assert.assertEquals(dg.getName(), notif.getProperties()
                                             .getSimpleStringProperty(new SimpleString("name"))
                                             .toString());
   }

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      }
   }


   private static DiscoveryGroup createDiscoveryGroup(String nodeID, DiscoveryGroupConfiguration config) throws Exception
   {
      DiscoveryGroup group = new DiscoveryGroup(nodeID, config.getName(),
            config.getRefreshTimeout(), config.getBroadcastEndpointFactoryConfiguration().createBroadcastEndpointFactory(), null);
      return group;
   }

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      TransportConfiguration live1 = generateTC();


      bg.addConnector(live1);


      DiscoveryGroup dg1 = new DiscoveryGroupImpl(RandomUtil.randomString(),
                                                  RandomUtil.randomString(),
                                                  null,
                                                  groupAddress,
                                                  groupPort,
                                                  timeout);


      DiscoveryGroup dg2 = new DiscoveryGroupImpl(RandomUtil.randomString(),
                                                  RandomUtil.randomString(),
                                                  null,
                                                  groupAddress,
                                                  groupPort,
                                                  timeout);


      DiscoveryGroup dg3 = new DiscoveryGroupImpl(RandomUtil.randomString(),
                                                  RandomUtil.randomString(),
                                                  null,
                                                  groupAddress,
                                                  groupPort,
                                                  timeout);


      dg1.start();
      dg2.start();
      dg3.start();


      bg.broadcastConnectors();


      boolean ok = dg1.waitForBroadcast(1000);
      Assert.assertTrue(ok);
      List<DiscoveryEntry> entries = dg1.getDiscoveryEntries();
      assertEqualsDiscoveryEntries(Arrays.asList(live1), entries);


      ok = dg2.waitForBroadcast(1000);
      Assert.assertTrue(ok);
      entries = dg2.getDiscoveryEntries();
      assertEqualsDiscoveryEntries(Arrays.asList(live1), entries);


      ok = dg3.waitForBroadcast(1000);
      Assert.assertTrue(ok);
      entries = dg3.getDiscoveryEntries();
      assertEqualsDiscoveryEntries(Arrays.asList(live1), entries);


      bg.stop();


      dg1.stop();
      dg2.stop();
      dg3.stop();
   }

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      final InetAddress groupAddress = InetAddress.getByName(address1);
      final int groupPort = getUDPDiscoveryPort();
      final int timeout = 500;


      DiscoveryGroup dg = new DiscoveryGroupImpl(RandomUtil.randomString(),
                                                 RandomUtil.randomString(),
                                                 null,
                                                 groupAddress,
                                                 groupPort,
                                                 timeout);
      dg.setNotificationService(notifService);


      Assert.assertEquals(0, notifListener.getNotifications().size());


      dg.start();


      Assert.assertEquals(1, notifListener.getNotifications().size());
      Notification notif = notifListener.getNotifications().get(0);
      Assert.assertEquals(NotificationType.DISCOVERY_GROUP_STARTED, notif.getType());
      Assert.assertEquals(dg.getName(), notif.getProperties()
                                             .getSimpleStringProperty(new SimpleString("name"))
                                             .toString());


      dg.stop();


      Assert.assertEquals(2, notifListener.getNotifications().size());
      notif = notifListener.getNotifications().get(1);
      Assert.assertEquals(NotificationType.DISCOVERY_GROUP_STOPPED, notif.getType());
      Assert.assertEquals(dg.getName(), notif.getProperties()
                                             .getSimpleStringProperty(new SimpleString("name"))
                                             .toString());
   }

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      else
      {
         localBindAddress = null;
      }


      DiscoveryGroup group = new DiscoveryGroupImpl(nodeUUID.toString(),
                                                    config.getName(),
                                                    localBindAddress,
                                                    groupAddress,
                                                    config.getGroupPort(),
                                                    config.getRefreshTimeout());


      discoveryGroups.put(config.getName(), group);


      managementService.registerDiscoveryGroup(group, config);


      group.start();
   }

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                                                       server.getConfiguration().getClusterUser(),
                                                       server.getConfiguration().getClusterPassword());
      }
      else
      {
         DiscoveryGroup dg = discoveryGroups.get(config.getDiscoveryGroupName());


         if (dg == null)
         {
            ClusterManagerImpl.log.warn("No discovery group with name '" + config.getDiscoveryGroupName() +
                                        "'. The cluster connection will not be deployed.");

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      }
   }


   private static DiscoveryGroup createDiscoveryGroup(String nodeID, DiscoveryGroupConfiguration config) throws Exception
   {
      DiscoveryGroup group = null;


      BroadcastEndpoint endpoint;


      if (config.getJgroupsFile() != null)
      {
         endpoint = BroadcastEndpointFactory.createJGropusEndpoint(config.getJgroupsFile(), config.getJgroupsChannelName());
      }
      else
      {
         endpoint = BroadcastEndpointFactory.createUDPEndpoint(config.getGroupAddress(), config.getGroupPort(),
            config.getLocalBindAddress(), config.getLocalBindPort());
      }


      group = new DiscoveryGroup(nodeID,
         config.getName(),
         config.getRefreshTimeout(),
         endpoint, null);
      return group;
   }

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      }
   }


   private static DiscoveryGroup createDiscoveryGroup(String nodeID, DiscoveryGroupConfiguration config) throws Exception
   {
      DiscoveryGroup group = new DiscoveryGroup(nodeID, config.getName(),
            config.getRefreshTimeout(), config.getBroadcastEndpointFactoryConfiguration().createBroadcastEndpointFactory(), null);
      return group;
   }

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      }
   }


   private static DiscoveryGroup createDiscoveryGroup(String nodeID, DiscoveryGroupConfiguration config) throws Exception
   {
      DiscoveryGroup group = new DiscoveryGroup(nodeID, config.getName(),
            config.getRefreshTimeout(), config.getBroadcastEndpointFactoryConfiguration().createBroadcastEndpointFactory(), null);
      return group;
   }

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      }
   }


   private static DiscoveryGroup createDiscoveryGroup(String nodeID, DiscoveryGroupConfiguration config) throws Exception
   {
      DiscoveryGroup group = new DiscoveryGroup(nodeID, config.getName(),
            config.getRefreshTimeout(), config.getBroadcastEndpointFactoryConfiguration().createBroadcastEndpointFactory(), null);
      return group;
   }

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