Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.MockController

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        5, // number of nodes
        3, // replicas
        "MasterSlave", true); // do rebalance

    // start controller
    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    // start participants
    for (int i = 0; i < 5; i++) {
      String instanceName = "localhost_" + (12918 + i);
      participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
      participants[i].setTransition(new SessionExpiryTransition(participants[i]));
      participants[i].syncStart();
    }

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

    // clean up
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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    // rebalance

    // start controller
    MockController[] controllers = new MockController[4];
    for (int i = 0; i < 4; i++) {
      controllers[i] = new MockController(_zkaddr, clusterName, "controller_0");
      controllers[i].syncStart();
    }

    Thread.sleep(500); // wait leader election finishes
    String liPath = PropertyPathConfig.getPath(PropertyType.LIVEINSTANCES, clusterName);
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  }

  private void startAndVerify(String clusterName) throws Exception {
    MockParticipant[] participants = new MockParticipant[5];

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    // start participants
    for (int i = 0; i < 5; i++) {
      String instanceName = "localhost_" + (12918 + i);
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    _participantMap.put(clusterName, participants);
    _controllerMap.put(clusterName, controller);
  }

  private void stop(String clusterName) {
    MockController controller = _controllerMap.get(clusterName);
    if (controller != null) {
      controller.syncStop();
    }

    MockParticipant[] participants = _participantMap.get(clusterName);
    if (participants != null) {
      for (MockParticipant participant : participants) {
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    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setBucketSize(1);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    // start participants
    for (int i = 0; i < 5; i++) {
      String instanceName = "localhost_" + (12918 + i);

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

    boolean result =
        ClusterStateVerifier
            .verifyByZkCallback(new MasterNbInExtViewVerifier(_zkaddr, clusterName));
    Assert.assertTrue(result);

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

    // clean up
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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        5, // partitionNb
        _nodeNb, // nodesNb
        _nodeNb, // replica
        "MasterSlave", true);

    MockController controller =
        new MockController(_zkaddr, _clusterName, "controller_0");
    controller.syncStart();

    MockParticipant[] participants = new MockParticipant[5];
    for (int i = 0; i < _nodeNb; i++) {
      String instanceName = "localhost_" + (_startPort + i);

      participants[i] = new MockParticipant(_zkaddr, _clusterName, instanceName);

      registerCustomCodeRunner(participants[i]);
      participants[i].syncStart();
    }
    boolean result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            _zkaddr, _clusterName));
    Assert.assertTrue(result);

    Thread.sleep(1000); // wait for the INIT type callback to finish
    Assert.assertTrue(_callback._isCallbackInvoked);
    _callback._isCallbackInvoked = false;

    // add a new live instance
    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(_clusterName, _baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance newLiveIns = new LiveInstance("newLiveInstance");
    newLiveIns.setHelixVersion("0.6.0");
    newLiveIns.setSessionId("randomSessionId");
    accessor.setProperty(keyBuilder.liveInstance("newLiveInstance"), newLiveIns);

    Thread.sleep(1000); // wait for the CALLBACK type callback to finish
    Assert.assertTrue(_callback._isCallbackInvoked);

    // clean up
    controller.syncStop();
    for (int i = 0; i < _nodeNb; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + _clusterName + " at " + new Date(System.currentTimeMillis()));
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      _participants[i].syncStart();
    }

    // start controller
    String controllerName = "controller_0";
    _controller = new MockController(_zkaddr, CLUSTER_NAME, controllerName);
    _controller.syncStart();

    // create cluster manager
    _manager =
        HelixManagerFactory.getZKHelixManager(CLUSTER_NAME, "Admin", InstanceType.ADMINISTRATOR,
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        10, // partitions per resource
        n, // number of nodes
        3, // replicas
        "MasterSlave", true); // do rebalance

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

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

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

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

    // add a new idealState without registering message handling factory
    _setupTool.addResourceToCluster(clusterName, "TestDB1", 16, "MasterSlave");

    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB1"));
    idealState.setStateModelFactoryId(StateModelFactoryId.from("TestDB1_Factory"));
    accessor.setProperty(keyBuilder.idealStates("TestDB1"), idealState);
    _setupTool.rebalanceStorageCluster(clusterName, "TestDB1", 3);

    // assert that we have received OFFLINE->SLAVE messages for all partitions
    int totalMsgs = 0;
    for (int retry = 0; retry < 5; retry++) {
      Thread.sleep(100);
      totalMsgs = 0;
      for (int i = 0; i < n; i++) {
        List<Message> msgs =
            accessor.getChildValues(keyBuilder.messages(participants[i].getInstanceName()));
        totalMsgs += msgs.size();
      }

      if (totalMsgs == 48) // partition# x replicas
        break;
    }

    Assert
        .assertEquals(
            totalMsgs,
            48,
            "Should accumulated 48 unprocessed messages (1 O->S per partition per replica) because TestDB1 is added without state-model-factory but was "
                + totalMsgs);

    // register "TestDB1_Factory" state model factory
    // Logger.getRootLogger().setLevel(Level.INFO);
    for (int i = 0; i < n; i++) {
      participants[i].getStateMachineEngine().registerStateModelFactory(StateModelDefId.MasterSlave,
          "TestDB1_Factory", new MockMSModelFactory());
    }

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

    // clean up
    // wait for all zk callbacks done
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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      String instanceName = "localhost_" + (12918 + i);
      participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
      participants[i].syncStart();
    }

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    boolean result;
    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            _zkaddr, clusterName));
    Assert.assertTrue(result);

    // participant session expiry
    MockParticipant participantToExpire = participants[1];

    System.out.println("Expire participant session");
    String oldSessionId = participantToExpire.getSessionId();

    ZkTestHelper.expireSession(participantToExpire.getZkClient());
    String newSessionId = participantToExpire.getSessionId();
    System.out.println("oldSessionId: " + oldSessionId + ", newSessionId: " + newSessionId);
    Assert.assertTrue(newSessionId.compareTo(oldSessionId) > 0,
        "Session id should be increased after expiry");

    _setupTool.addResourceToCluster(clusterName, "TestDB1", 10, "MasterSlave");
    _setupTool.rebalanceStorageCluster(clusterName, "TestDB1", 3);

    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            _zkaddr, clusterName));
    Assert.assertTrue(result);

    // controller session expiry
    System.out.println("Expire controller session");
    oldSessionId = controller.getSessionId();
    ZkTestHelper.expireSession(controller.getZkClient());
    newSessionId = controller.getSessionId();
    System.out.println("oldSessionId: " + oldSessionId + ", newSessionId: " + newSessionId);
    Assert.assertTrue(newSessionId.compareTo(oldSessionId) > 0,
        "Session id should be increased after expiry");

    _setupTool.addResourceToCluster(clusterName, "TestDB2", 8, "MasterSlave");
    _setupTool.rebalanceStorageCluster(clusterName, "TestDB2", 3);

    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            _zkaddr, clusterName));
    Assert.assertTrue(result);

    // clean up
    System.out.println("Clean up ...");
    // Logger.getRootLogger().setLevel(Level.DEBUG);
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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    HelixAdmin admin = new ZKHelixAdmin(_zkclient);
    admin.setConstraint(clusterName, ConstraintType.MESSAGE_CONSTRAINT, "constraint1",
        constraintItemBuilder.build());

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller");
    controller.syncStart();

    // start 1st participant
    MockParticipant[] participants = new MockParticipant[n];
    String instanceName1 = "localhost_12918";

    participants[0] = new MockParticipant(_zkaddr, clusterName, instanceName1);
    participants[0].getStateMachineEngine().registerStateModelFactory(StateModelDefId.from("Bootstrap"),
        new BootstrapStateModelFactory());
    participants[0].syncStart();

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

    // start 2nd participant which will be the master for Test0_0
    String instanceName2 = "localhost_12919";
    participants[1] = new MockParticipant(_zkaddr, clusterName, instanceName2);
    participants[1].getStateMachineEngine().registerStateModelFactory(StateModelDefId.from("Bootstrap"),
        new BootstrapStateModelFactory());
    participants[1].syncStart();

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

    // check we received the message in the right order
    Assert.assertEquals(_msgOrderList.size(), 7);

    Message[] _msgOrderArray = _msgOrderList.toArray(new Message[0]);
    assertMessage(_msgOrderArray[0], "OFFLINE", "BOOTSTRAP", instanceName1);
    assertMessage(_msgOrderArray[1], "BOOTSTRAP", "SLAVE", instanceName1);
    assertMessage(_msgOrderArray[2], "SLAVE", "MASTER", instanceName1);

    // after we start the 2nd instance, the messages should be received in
    // the following order:
    // 1) offline->bootstrap for localhost_12919
    // 2) bootstrap->slave for localhost_12919
    // 3) master->slave for localhost_12918
    // 4) slave->master for localhost_12919
    assertMessage(_msgOrderArray[3], "OFFLINE", "BOOTSTRAP", instanceName2);
    assertMessage(_msgOrderArray[4], "BOOTSTRAP", "SLAVE", instanceName2);
    assertMessage(_msgOrderArray[5], "MASTER", "SLAVE", instanceName1);
    assertMessage(_msgOrderArray[6], "SLAVE", "MASTER", instanceName2);

    // clean up
    // wait for all zk callbacks done
    controller.syncStop();
    for (int i = 0; i < n; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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Related Classes of org.apache.helix.manager.zk.MockController

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  • org.apache.helix.controller.stages.TestRebalancePipeline
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  • org.apache.helix.integration.IntegrationTest
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