Package org.apache.helix.api

Examples of org.apache.helix.api.State

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    long msgExecutionStartTime = message.getExecuteStartTimeStamp();
    if (msgReadTime != 0 && msgExecutionStartTime != 0) {
      long totalDelay = now - msgReadTime;
      long executionDelay = now - msgExecutionStartTime;
      if (totalDelay > 0 && executionDelay > 0) {
        State fromState = message.getTypedFromState();
        State toState = message.getTypedToState();
        String transition = fromState + "--" + toState;

        StateTransitionContext cxt =
            new StateTransitionContext(manager.getClusterName(), manager.getInstanceName(), message
                .getResourceId().stringify(), transition);
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    }

    HelixDataAccessor accessor = _manager.getHelixDataAccessor();

    PartitionId partitionId = _message.getPartitionId();
    State fromState = _message.getTypedFromState();

    // Verify the fromState and current state of the stateModel
    String state = _currentStateDelta.getState(partitionId.stringify());

    if (fromState != null && !fromState.equals("*")
        && !fromState.toString().equalsIgnoreCase(state)) {
      String errorMessage =
          "Current state of stateModel does not match the fromState in Message"
              + ", Current State:" + state + ", message expected:" + fromState + ", partition: "
              + partitionId + ", from: " + _message.getMsgSrc() + ", to: " + _message.getTgtName();

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    StateModelDefinition stateModelDef = cluster.getStateModelMap().get(stateModelDefId);
    if (stateModelDef.getStatesPriorityList().size() < 1) {
      LOG.error("Invalid state model definition. There should be at least one state.");
      return assignment;
    }
    State lockState = stateModelDef.getTypedStatesPriorityList().get(0);

    // Count the number of participants allowed to lock each lock
    String stateCount = stateModelDef.getNumParticipantsPerState(lockState);
    int lockHolders = 0;
    try {
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      int numberOfPartitions = idealState.getRecord().getListFields().size();
      String stateModelDefName = idealState.getStateModelDefId().stringify();
      StateModelDefinition stateModelDef =
          accessor.getProperty(keyBuilder.stateModelDef(stateModelDefName));
      State masterValue = stateModelDef.getTypedStatesPriorityList().get(0);
      int replicas = Integer.parseInt(idealState.getReplicas());

      String instanceGroupTag = idealState.getInstanceGroupTag();

      int instances = 0;
      Map<String, LiveInstance> liveInstanceMap =
          accessor.getChildValuesMap(keyBuilder.liveInstances());
      Map<String, InstanceConfig> instanceConfigMap =
          accessor.getChildValuesMap(keyBuilder.instanceConfigs());
      for (String liveInstanceName : liveInstanceMap.keySet()) {
        if (instanceConfigMap.get(liveInstanceName).containsTag(instanceGroupTag)) {
          instances++;
        }
      }
      if (instances == 0) {
        instances = liveInstanceMap.size();
      }
      ExternalView ev = accessor.getProperty(keyBuilder.externalView(_resourceName));
      if (ev == null) {
        return false;
      }
      return verifyBalanceExternalView(ev.getRecord(), numberOfPartitions, masterValue.toString(),
          replicas, instances);
    }
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    final BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    final HelixDataAccessor helixAccessor =
        new ZKHelixDataAccessor(clusterId.stringify(), baseAccessor);
    final LockProvider lockProvider = new LockProvider();
    final StateModelDefId stateModelDefId = StateModelDefId.from("FakeModel");
    final State state = State.from("fake");
    final int constraint1 = 10;
    final int constraint2 = 11;
    final String key1 = "key1";
    final String key2 = "key2";
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    for (PartitionId partition : config.getPartitionSet()) {
      Map<ParticipantId, State> curStateMap =
          currentStateOutput.getCurrentStateMap(config.getResourceId(), partition);
      map.put(partition, new HashMap<ParticipantId, State>());
      for (ParticipantId node : curStateMap.keySet()) {
        State state = curStateMap.get(node);
        if (stateCountMap.containsKey(state)) {
          map.get(partition).put(node, state);
        }
      }

      Map<ParticipantId, State> pendingStateMap =
          currentStateOutput.getPendingStateMap(config.getResourceId(), partition);
      for (ParticipantId node : pendingStateMap.keySet()) {
        State state = pendingStateMap.get(node);
        if (stateCountMap.containsKey(state)) {
          map.get(partition).put(node, state);
        }
      }
    }
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      setPathVal(path, state, state, 0);
      setNext(next, state, state, state);
    }

    for (Transition transition : transitions) {
      State fromState = transition.getTypedFromState();
      State toState = transition.getTypedToState();
      setPathVal(path, fromState.toString(), toState.toString(), 1);
      setNext(next, fromState.toString(), toState.toString(), toState.toString());
    }

    // iterate
    for (String intermediateState : states) {
      for (String fromState : states) {
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  public class ExpandAlertTransition extends MockTransition {
    @Override
    public void doTransition(Message message, NotificationContext context) {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      State fromState = message.getTypedFromState();
      State toState = message.getTypedToState();
      String instance = message.getTgtName();

      if (fromState.toString().equalsIgnoreCase("SLAVE")
          && toState.toString().equalsIgnoreCase("MASTER")) {

        // add a stat and report to ZK
        // perhaps should keep reporter per instance...
        ParticipantHealthReportCollectorImpl reporter =
            new ParticipantHealthReportCollectorImpl(manager, instance);
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  public class StalenessAlertTransition extends MockTransition {
    @Override
    public void doTransition(Message message, NotificationContext context) {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      State fromState = message.getTypedFromState();
      State toState = message.getTypedToState();
      String instance = message.getTgtName();

      if (fromState.toString().equalsIgnoreCase("SLAVE")
          && toState.toString().equalsIgnoreCase("MASTER")) {

        // add a stat and report to ZK
        // perhaps should keep reporter per instance...
        ParticipantHealthReportCollectorImpl reporter =
            new ParticipantHealthReportCollectorImpl(manager, instance);
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  public class AddDropAlertTransition extends MockTransition {
    @Override
    public void doTransition(Message message, NotificationContext context) {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      State fromState = message.getTypedFromState();
      State toState = message.getTypedToState();
      String instance = message.getTgtName();

      if (fromState.toString().equalsIgnoreCase("SLAVE")
          && toState.toString().equalsIgnoreCase("MASTER")) {

        // add a stat and report to ZK
        // perhaps should keep reporter per instance...
        ParticipantHealthReportCollectorImpl reporter =
            new ParticipantHealthReportCollectorImpl(manager, instance);
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Related Classes of org.apache.helix.api.State

  • org.apache.helix.agent.AgentStateModel
  • org.apache.helix.api.accessor.ParticipantAccessor
  • org.apache.helix.api.accessor.ResourceAccessor
  • org.apache.helix.api.accessor.TestAtomicAccessors
  • org.apache.helix.controller.rebalancer.FullAutoRebalancer
  • org.apache.helix.controller.stages.BestPossibleStateCalcStage
  • org.apache.helix.controller.stages.MessageGenerationStage
  • org.apache.helix.controller.stages.MessageSelectionStage
  • org.apache.helix.controller.stages.TestCurrentStateComputationStage
  • org.apache.helix.controller.stages.TestStagesWithLogicalAccessors
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