Package org.apache.helix.manager.zk

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

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    String clusterName = "CLUSTER_" + _className + "_xfer";

    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    final String resourceName = "testResource_xfer";
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  }

  protected void setCurrentState(String clusterName, String instance, String resourceGroupName,
      String resourceKey, String sessionId, String state) {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    CurrentState curState = new CurrentState(resourceGroupName);
    curState.setState(resourceKey, state);
    curState.setSessionId(sessionId);
    curState.setStateModelDefRef("MasterSlave");
    accessor.setProperty(keyBuilder.currentState(instance, sessionId, resourceGroupName), curState);
  }
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  private void clearStatusUpdate(String clusterName, String instance, String resource,
      String partition) {
    // clear status update for error partition so verify() will not fail on
    // old errors
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instance));
    accessor.removeProperty(keyBuilder.stateTransitionStatus(instance, liveInstance.getSessionId(),
        resource, partition));

  }
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  public void testDuplicateMsg() {
    String clusterName = "CLUSTER_" + _className + "_dup";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));

    HelixManager manager = new DummyClusterManager(clusterName, accessor);
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);
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  public void testMsgTriggeredRebalance() throws Exception {
    String clusterName = "CLUSTER_" + _className + "_msgTrigger";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);
    ClusterEvent event = new ClusterEvent("testEvent");

    final String resourceName = "testResource_dup";
    String[] resourceGroups = new String[] {
      resourceName
    };

    TestHelper.setupEmptyCluster(_gZkClient, clusterName);

    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] {
        0, 1
    }, resourceGroups, 1, 2);
    setupStateModel(clusterName);
    setupInstances(clusterName, new int[] {
        0, 1
    });
    setupLiveInstances(clusterName, new int[] {
        0, 1
    });

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

    // round1: controller sends O->S to both node0 and node1
    Thread.sleep(1000);

    Builder keyBuilder = accessor.keyBuilder();
    List<String> messages = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    Assert.assertEquals(messages.size(), 1);
    messages = accessor.getChildNames(keyBuilder.messages("localhost_1"));
    Assert.assertEquals(messages.size(), 1);

    // round2: node0 and node1 update current states but not removing messages
    // controller's rebalance pipeline should be triggered but since messages are not
    // removed
    // no new messages will be sent
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_0",
        "SLAVE");
    setCurrentState(clusterName, "localhost_1", resourceName, resourceName + "_0", "session_1",
        "SLAVE");
    Thread.sleep(1000);
    messages = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    Assert.assertEquals(messages.size(), 1);

    messages = accessor.getChildNames(keyBuilder.messages("localhost_1"));
    Assert.assertEquals(messages.size(), 1);

    // round3: node0 removes message and controller's rebalance pipeline should be
    // triggered
    // and sends S->M to node0
    messages = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    accessor.removeProperty(keyBuilder.message("localhost_0", messages.get(0)));
    Thread.sleep(1000);

    messages = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    Assert.assertEquals(messages.size(), 1);
    ZNRecord msg =
        accessor.getProperty(keyBuilder.message("localhost_0", messages.get(0))).getRecord();
    String toState = msg.getSimpleField(Attributes.TO_STATE.toString());
    Assert.assertEquals(toState, "MASTER");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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  public void testChangeIdealStateWithPendingMsg() {
    String clusterName = "CLUSTER_" + _className + "_pending";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    ClusterDataCache cache = new ClusterDataCache();
    event.addAttribute("ClusterDataCache", cache);

    final String resourceName = "testResource_pending";
    String[] resourceGroups = new String[] {
      resourceName
    };
    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] {
        0, 1
    }, resourceGroups, 1, 2);
    setupLiveInstances(clusterName, new int[] {
        0, 1
    });
    setupStateModel(clusterName);

    // cluster data cache refresh pipeline
    Pipeline dataRefresh = new Pipeline();
    dataRefresh.addStage(new ReadClusterDataStage());

    // rebalance pipeline
    Pipeline rebalancePipeline = new Pipeline();
    rebalancePipeline.addStage(new ResourceComputationStage());
    rebalancePipeline.addStage(new CurrentStateComputationStage());
    rebalancePipeline.addStage(new BestPossibleStateCalcStage());
    rebalancePipeline.addStage(new MessageGenerationPhase());
    rebalancePipeline.addStage(new MessageSelectionStage());
    rebalancePipeline.addStage(new MessageThrottleStage());
    rebalancePipeline.addStage(new TaskAssignmentStage());

    // round1: set node0 currentState to OFFLINE and node1 currentState to SLAVE
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_0",
        "OFFLINE");
    setCurrentState(clusterName, "localhost_1", resourceName, resourceName + "_0", "session_1",
        "SLAVE");

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: OFFLINE-SLAVE for node0");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "SLAVE");
    Assert.assertEquals(message.getTgtName(), "localhost_0");

    // round2: drop resource, but keep the
    // message, make sure controller should not send O->DROPPEDN until O->S is done
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.dropResource(clusterName, resourceName);
    List<IdealState> idealStates = accessor.getChildValues(accessor.keyBuilder().idealStates());
    cache.setIdealStates(idealStates);

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
        "Should output only 1 message: OFFLINE->DROPPED for localhost_1");

    message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "SLAVE");
    Assert.assertEquals(message.getToState(), "OFFLINE");
    Assert.assertEquals(message.getTgtName(), "localhost_1");

    // round3: remove O->S for localhost_0, controller should now send O->DROPPED to
    // localhost_0
    Builder keyBuilder = accessor.keyBuilder();
    List<String> msgIds = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    accessor.removeProperty(keyBuilder.message("localhost_0", msgIds.get(0)));
    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
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    String clusterName = "CLUSTER_" + _className + "_xfer";

    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    final String resourceName = "testResource_xfer";
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  }

  protected void setCurrentState(String clusterName, String instance, String resourceGroupName,
      String resourceKey, String sessionId, String state) {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    CurrentState curState = new CurrentState(resourceGroupName);
    curState.setState(resourceKey, state);
    curState.setSessionId(sessionId);
    curState.setStateModelDefRef("MasterSlave");
    accessor.setProperty(keyBuilder.currentState(instance, sessionId, resourceGroupName), curState);
  }
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  public void testMsgThrottleBasic() throws Exception {
    String clusterName = "CLUSTER_" + _className + "_basic";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);

    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] {
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  public void testMsgThrottleConstraints() throws Exception {
    String clusterName = "CLUSTER_" + _className + "_constraints";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);

    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] {
        0, 1
    }, new String[] {
      "TestDB"
    }, 1, 2);
    setupLiveInstances(clusterName, new int[] {
        0, 1
    });
    setupStateModel(clusterName);

    // setup constraints
    ZNRecord record = new ZNRecord(ConstraintType.MESSAGE_CONSTRAINT.toString());

    // constraint0:
    // "MESSAGE_TYPE=STATE_TRANSITION,CONSTRAINT_VALUE=ANY"
    record.setMapField("constraint0", new TreeMap<String, String>());
    record.getMapField("constraint0").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint0").put("CONSTRAINT_VALUE", "ANY");
    ConstraintItem constraint0 = new ConstraintItem(record.getMapField("constraint0"));

    // constraint1:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,CONSTRAINT_VALUE=ANY"
    record.setMapField("constraint1", new TreeMap<String, String>());
    record.getMapField("constraint1").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint1").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint1").put("CONSTRAINT_VALUE", "50");
    ConstraintItem constraint1 = new ConstraintItem(record.getMapField("constraint1"));

    // constraint2:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=.*,RESOURCE=TestDB,CONSTRAINT_VALUE=2";
    record.setMapField("constraint2", new TreeMap<String, String>());
    record.getMapField("constraint2").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint2").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint2").put("INSTANCE", ".*");
    record.getMapField("constraint2").put("RESOURCE", "TestDB");
    record.getMapField("constraint2").put("CONSTRAINT_VALUE", "2");
    ConstraintItem constraint2 = new ConstraintItem(record.getMapField("constraint2"));

    // constraint3:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=localhost_12918,RESOURCE=.*,CONSTRAINT_VALUE=1";
    record.setMapField("constraint3", new TreeMap<String, String>());
    record.getMapField("constraint3").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint3").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint3").put("INSTANCE", "localhost_1");
    record.getMapField("constraint3").put("RESOURCE", ".*");
    record.getMapField("constraint3").put("CONSTRAINT_VALUE", "1");
    ConstraintItem constraint3 = new ConstraintItem(record.getMapField("constraint3"));

    // constraint4:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=.*,RESOURCE=.*,CONSTRAINT_VALUE=10"
    record.setMapField("constraint4", new TreeMap<String, String>());
    record.getMapField("constraint4").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint4").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint4").put("INSTANCE", ".*");
    record.getMapField("constraint4").put("RESOURCE", ".*");
    record.getMapField("constraint4").put("CONSTRAINT_VALUE", "10");
    ConstraintItem constraint4 = new ConstraintItem(record.getMapField("constraint4"));

    // constraint5:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=localhost_12918,RESOURCE=TestDB,CONSTRAINT_VALUE=5"
    record.setMapField("constraint5", new TreeMap<String, String>());
    record.getMapField("constraint5").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint5").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint5").put("INSTANCE", "localhost_0");
    record.getMapField("constraint5").put("RESOURCE", "TestDB");
    record.getMapField("constraint5").put("CONSTRAINT_VALUE", "3");
    ConstraintItem constraint5 = new ConstraintItem(record.getMapField("constraint5"));

    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
        new ClusterConstraints(record));

    // ClusterConstraints constraint =
    // accessor.getProperty(ClusterConstraints.class,
    // PropertyType.CONFIGS,
    // ConfigScopeProperty.CONSTRAINT.toString(),
    // ConstraintType.MESSAGE_CONSTRAINT.toString());
    ClusterConstraints constraint =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));

    MessageThrottleStage throttleStage = new MessageThrottleStage();

    // test constraintSelection
    // message1: hit contraintSelection rule1 and rule2
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Related Classes of org.apache.helix.manager.zk.ZKHelixDataAccessor

  • org.apache.helix.api.accessor.TestAccessorRecreate
  • org.apache.helix.api.accessor.TestAtomicAccessors
  • org.apache.helix.api.TestNewStages
  • org.apache.helix.controller.restlet.ZkPropertyTransferClient
  • org.apache.helix.controller.restlet.ZNRecordUpdate
  • org.apache.helix.controller.stages.TestMessageThrottleStage
  • org.apache.helix.controller.stages.TestRebalancePipeline
  • org.apache.helix.controller.stages.TestStagesWithLogicalAccessors
  • org.apache.helix.healthcheck.TestAddDropAlert
  • org.apache.helix.healthcheck.TestDummyAlerts
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