Package org.apache.helix.model

Examples of org.apache.helix.model.StateModelDefinition

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    NotificationContext context;

    MockManager manager = new MockManager("clusterName");
    HelixDataAccessor accessor = manager.getHelixDataAccessor();

    StateModelDefinition stateModelDef =
        new StateModelDefinition(StateModelConfigGenerator.generateConfigForMasterSlave());
    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.stateModelDef("MasterSlave"), stateModelDef);

    context = new NotificationContext(manager);
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    admin.addCluster(clusterName, true);

    // add MasterSlave state mode definition
    StateModelConfigGenerator generator = new StateModelConfigGenerator();
    admin.addStateModelDef(clusterName, "MasterSlave",
        new StateModelDefinition(generator.generateConfigForMasterSlave()));

    // add 3 participants: "localhost:{12918, 12919, 12920}"
    for (int i = 0; i < 3; i++) {
      int port = 12918 + i;
      InstanceConfig config = new InstanceConfig("localhost_" + port);
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    // check if the state model definition exists and cache it
    if (!_stateModelDefs.containsKey(stateModelName)) {
      HelixDataAccessor accessor = _manager.getHelixDataAccessor();
      Builder keyBuilder = accessor.keyBuilder();
      StateModelDefinition stateModelDef =
          accessor.getProperty(keyBuilder.stateModelDef(stateModelName));
      if (stateModelDef == null) {
        throw new HelixException("fail to create msg-handler because stateModelDef for "
            + stateModelName + " does NOT exist");
      }
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    // add cluster
    admin.addCluster(clusterName, true);

    // add MasterSlave state model definition
    admin.addStateModelDef(clusterName, "MasterSlave", new StateModelDefinition(
        StateModelConfigGenerator.generateConfigForMasterSlave()));

    // add 2 participants: "localhost:{12918, 12919}"
    int n = 2;
    for (int i = 0; i < n; i++) {
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    stateTransitionPriorityList.add("IDLE-OFFLINE");
    stateTransitionPriorityList.add("IDLE-DROPPED");
    stateTransitionPriorityList.add("ERROR-IDLE");
    record.setListField(StateModelDefinitionProperty.STATE_TRANSITION_PRIORITYLIST.toString(),
        stateTransitionPriorityList);
    return new StateModelDefinition(record);
  }
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  protected void setupStateModel(String clusterName) {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    StateModelDefinition masterSlave =
        new StateModelDefinition(StateModelConfigGenerator.generateConfigForMasterSlave());
    accessor.setProperty(keyBuilder.stateModelDef(masterSlave.getId()), masterSlave);

    StateModelDefinition leaderStandby =
        new StateModelDefinition(StateModelConfigGenerator.generateConfigForLeaderStandby());
    accessor.setProperty(keyBuilder.stateModelDef(leaderStandby.getId()), leaderStandby);

    StateModelDefinition onlineOffline =
        new StateModelDefinition(StateModelConfigGenerator.generateConfigForOnlineOffline());
    accessor.setProperty(keyBuilder.stateModelDef(onlineOffline.getId()), onlineOffline);

  }
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    MessageSelectionStageOutput output = new MessageSelectionStageOutput();

    for (String resourceName : resourceMap.keySet()) {
      Resource resource = resourceMap.get(resourceName);
      StateModelDefinition stateModelDef = cache.getStateModelDef(resource.getStateModelDefRef());

      Map<String, Integer> stateTransitionPriorities = getStateTransitionPriorityMap(stateModelDef);
      IdealState idealState = cache.getIdealState(resourceName);
      Map<String, Bounds> stateConstraints =
          computeStateConstraints(stateModelDef, idealState, cache);

      for (Partition partition : resource.getPartitions()) {
        List<Message> messages = messageGenOutput.getMessages(resourceName, partition);
        List<Message> selectedMessages =
            selectMessages(cache.getLiveInstances(),
                currentStateOutput.getCurrentStateMap(resourceName, partition),
                currentStateOutput.getPendingStateMap(resourceName, partition), messages,
                stateConstraints, stateTransitionPriorities, stateModelDef.getInitialState());
        output.addMessages(resourceName, partition, selectedMessages);
      }
    }
    event.addAttribute(AttributeName.MESSAGES_SELECTED.toString(), output);
  }
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        }
      }

      // check that every resource to process has a live state model definition
      String stateModelDefRef = idealState.getStateModelDefRef();
      StateModelDefinition stateModelDef = cache.getStateModelDef(stateModelDefRef);
      if (stateModelDef == null) {
        LOG.warn("Resource " + resourceName + " uses state model " + stateModelDefRef
            + ", but it is not on the cluster!");
        resourceMap.remove(resourceName);
      }
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    // System.out.println("Creating cluster: " + clusterName);
    admin.addCluster(clusterName, true);

    // add MasterSlave state mode definition
    admin.addStateModelDef(clusterName, "MasterSlave", new StateModelDefinition(
        StateModelConfigGenerator.generateConfigForMasterSlave()));

    // Add nodes to the cluster
    int n = 3;
    System.out.println("Adding " + n + " participants to the cluster");
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    // create cluster
    System.out.println("Creating cluster: " + clusterName);
    admin.addCluster(clusterName, true);

    // add MasterSlave state mode definition
    admin.addStateModelDef(clusterName, "MasterSlave", new StateModelDefinition(
        generateConfigForMasterSlave()));

    // ideal-state znrecord
    ZNRecord record = new ZNRecord(resourceName);
    record.setSimpleField("IDEAL_STATE_MODE", "AUTO");
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Related Classes of org.apache.helix.model.StateModelDefinition

  • com.linkedin.databus.cluster.DatabusCluster
  • org.apache.helix.api.accessor.ParticipantAccessor
  • org.apache.helix.api.accessor.ResourceAccessor
  • org.apache.helix.controller.rebalancer.AutoRebalancer
  • org.apache.helix.controller.rebalancer.CustomRebalancer
  • org.apache.helix.controller.rebalancer.FallbackRebalancer
  • org.apache.helix.controller.rebalancer.FullAutoRebalancer
  • org.apache.helix.controller.rebalancer.SemiAutoRebalancer
  • org.apache.helix.controller.stages.BaseStageTest
  • org.apache.helix.controller.stages.BestPossibleStateCalcStage
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