Package org.apache.helix.mock.controller

Examples of org.apache.helix.mock.controller.ClusterController

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    // register a message listener so we know how many message generated
    TestZkChildListener listener = new TestZkChildListener();
    _gZkClient.subscribeChildChanges(keyBuilder.messages("localhost_12918").getPath(), listener);

   
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
    Assert.assertTrue(listener._maxNbOfChilds <= 2, "Should get no more than 2 messages (O->S and S->M)");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
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                            n, // number of nodes
                            2, // replicas
                            "MasterSlave",
                            true); // do rebalance
   
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
   
    // stop all participants
    Thread.sleep(1000);
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
   
    // enable batch message
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setBatchMessageMode(true);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    // registry a message listener so we know how many message generated
    TestZkChildListener listener = new TestZkChildListener();
    _gZkClient.subscribeChildChanges(keyBuilder.messages("localhost_12918").getPath(), listener);

    // restart all participants
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }
   
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
    Assert.assertTrue(listener._maxNbOfChilds <= 2, "Should get no more than 2 messages (O->S and S->M)");

   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
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    // register a message listener so we know how many message generated
    TestZkChildListener listener = new TestZkChildListener();
    _gZkClient.subscribeChildChanges(keyBuilder.messages("localhost_12918").getPath(), listener);

   
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // pause controller
    // --enableCluster <clusterName true/false> 
    ClusterSetup.processCommandLineArgs(new String[]{"--zkSvr", ZK_ADDR, "--enableCluster", clusterName, "false"});

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }
   
    // change localhost_12918 version to 0.5, so batch-message-mode will be ignored
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance("localhost_12918"));
    liveInstance.setHelixVersion("0.5");
    accessor.setProperty(keyBuilder.liveInstance("localhost_12918"), liveInstance);

    // resume controller
    // --enableCluster <clusterName true/false> 
    ClusterSetup.processCommandLineArgs(new String[]{"--zkSvr", ZK_ADDR, "--enableCluster", clusterName, "true"});

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
    Assert.assertTrue(listener._maxNbOfChilds > 16, "Should see more than 16 messages at the same time (32 O->S and 32 S->M)");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();

    Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>()
    {
      {
        put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
        put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
      }
    };

    // start mock participants
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      if (i == 0)
      {
        participants[i] =
            new MockParticipant(clusterName,
                                instanceName,
                                ZK_ADDR,
                                new ErrTransition(errPartitions));
      }
      else
      {
        participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR);
      }
      participants[i].syncStart();
    }

    // verify cluster
    Map<String, Map<String, String>> errStateMap =
        new HashMap<String, Map<String, String>>();
    errStateMap.put("TestDB0", new HashMap<String, String>());
    errStateMap.get("TestDB0").put("TestDB0_4", "localhost_12918");
    errStateMap.get("TestDB0").put("TestDB0_8", "localhost_12918");
    boolean result =
        ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                       clusterName,
                                                                                                       errStateMap)));
    Assert.assertTrue(result, "Cluster verification fails");
   
    // reset resource "TestDB0"
    participants[0].setTransition(null);
    String command =
        "--zkSvr " + ZK_ADDR + " --resetResource " + clusterName
            + " TestDB0";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));

    result =
        ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                       clusterName)));
    Assert.assertTrue(result, "Cluster verification fails");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < 5; i++)
    {
      participants[i].syncStop();
    }
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // start participants
    Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
    errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
    errTransitions.put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // start participants
    Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
    errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
    errTransitions.put("ERROR-DROPPED", TestHelper.setOf("TestDB0_4"));
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        new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuiler = accessor.keyBuilder();
    accessor.setProperty(keyBuiler.idealStates("TestDB0"), isBuilder.build());
   
    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // start participants
    Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
    errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_0"));
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // start participants
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);

    // add schemata resource group
    String command = "--zkSvr " + ZK_ADDR +" --addResource " + clusterName +
        " schemata 1 STORAGE_DEFAULT_SM_SCHEMATA";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    command = "--zkSvr " + ZK_ADDR +" --rebalance " + clusterName +
        " schemata " + n;
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
   
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
   
    // drop schemata resource group
    System.out.println("Dropping schemata resource group...");
    command = "--zkSvr " + ZK_ADDR +" --dropResource " + clusterName +
        " schemata";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);

    // make sure schemata external view is empty
    ZkBaseDataAccessor<ZNRecord> baseAccessor =
        new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    ExternalView extView = accessor.getProperty(keyBuilder.externalView("schemata"));
    Assert.assertEquals(extView.getPartitionSet().size(), 0, "schemata externalView should be empty but was \"" + extView + "\"");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < 5; i++)
    {
      participants[i].syncStop();
    }
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                n, // number of nodes
                2, // replicas
                "MasterSlave",
                true); // do rebalance

        ClusterController controller =
                new ClusterController(clusterName, "controller_0", ZK_ADDR);
        controller.syncStart();

        // start participants
        MockParticipant[] participants = new MockParticipant[n];
        for (int i = 0; i < n; i++)
        {
            String instanceName = "localhost_" + (12918 + i);

            participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
            participants[i].syncStart();
        }

        boolean result =
                ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                        clusterName));
        Assert.assertTrue(result);

        // disable controller
        ZKHelixAdmin admin = new ZKHelixAdmin(_gZkClient);
        admin.enableCluster(clusterName, false);
        // wait all pending zk-events being processed, otherwise remove current-state will cause controller send O->S message
        ZkTestHelper.tryWaitZkEventsCleaned(controller.getManager().getZkClient());
        // System.out.println("paused controller");

        // drop resource
        admin.dropResource(clusterName, "TestDB0");
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