Package com.linkedin.helix.model

Examples of com.linkedin.helix.model.CurrentState

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      stateModelFactory.createAndAddStateModel(partitionKey);
      stateModel = stateModelFactory.getStateModel(partitionKey);
      stateModel.updateState(initState);
    }

    CurrentState currentStateDelta = new CurrentState(resourceName);
    currentStateDelta.setSessionId(sessionId);
    currentStateDelta.setStateModelDefRef(stateModelName);
    currentStateDelta.setStateModelFactoryName(factoryName);
    currentStateDelta.setBucketSize(bucketSize);

    currentStateDelta.setState(partitionKey, (stateModel.getCurrentState() == null)
        ? initState : stateModel.getCurrentState());

    return new HelixStateTransitionHandler(stateModel,
                                           message,
                                           context,
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      }
    }

    // check partition is in ERROR state
    String sessionId = liveInstance.getSessionId();
    CurrentState curState =
        accessor.getProperty(keyBuilder.currentState(instanceName,
                                                     sessionId,
                                                     resourceName));
    for (String partitionName : resetPartitionNames)
    {
      if (!curState.getState(partitionName).equals("ERROR"))
      {
        throw new HelixException("Can't reset state for " + resourceName + "/"
            + partitionNames + " on " + instanceName + ", because not all "
            + partitionNames + " are in ERROR state");
      }
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        String sessionId = manager.getSessionId();

        // get resource name from partition key: "PARTICIPANT_LEADER_XXX_0"
        String resourceName = _partitionKey.substring(0, _partitionKey.lastIndexOf('_'));

        CurrentState curState =
            accessor.getProperty(keyBuilder.currentState(instance,
                                                         sessionId,
                                                         resourceName));
        if (curState == null)
        {
          return;
        }

        String state = curState.getState(_partitionKey);
        if (state == null || !state.equalsIgnoreCase("LEADER"))
        {
          return;
        }
      }
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    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.liveInstance(instanceName),
                                          liveInstance);

    String oldResource = "testResourceOld";
    CurrentState currentState = new CurrentState(oldResource);
    currentState.setState("testResourceOld_0", "OFFLINE");
    currentState.setState("testResourceOld_1", "SLAVE");
    currentState.setState("testResourceOld_2", "MASTER");
    currentState.setStateModelDefRef("MasterSlave");
    accessor.setProperty(keyBuilder.currentState(instanceName, sessionId, oldResource),
                                          currentState);

    ResourceComputationStage stage = new ResourceComputationStage();
    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);

    Map<String, Resource> resourceMap = event
        .getAttribute(AttributeName.RESOURCES.toString());
    // +1 because it will have one for current state
    AssertJUnit.assertEquals(resources.length + 1, resourceMap.size());

    for (int i = 0; i < resources.length; i++)
    {
      String resourceName = resources[i];
      IdealState idealState = idealStates.get(i);
      AssertJUnit.assertTrue(resourceMap.containsKey(resourceName));
      AssertJUnit.assertEquals(resourceMap.get(resourceName)
          .getResourceName(), resourceName);
      AssertJUnit.assertEquals(resourceMap.get(resourceName)
          .getStateModelDefRef(), idealState.getStateModelDefRef());
      AssertJUnit.assertEquals(resourceMap.get(resourceName)
          .getPartitions().size(), idealState.getNumPartitions());
    }
    // Test the data derived from CurrentState
    AssertJUnit.assertTrue(resourceMap.containsKey(oldResource));
    AssertJUnit.assertEquals(resourceMap.get(oldResource)
        .getResourceName(), oldResource);
    AssertJUnit.assertEquals(resourceMap.get(oldResource)
        .getStateModelDefRef(), currentState.getStateModelDefRef());
    AssertJUnit
        .assertEquals(resourceMap.get(oldResource).getPartitions()
            .size(), currentState.getPartitionStateMap().size());
    AssertJUnit.assertNotNull(resourceMap.get(oldResource).getPartition("testResourceOld_0"));
    AssertJUnit.assertNotNull(resourceMap.get(oldResource).getPartition("testResourceOld_1"));
    AssertJUnit.assertNotNull(resourceMap.get(oldResource).getPartition("testResourceOld_2"));

  }
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          createCurStateNames.add(resourceName);
          createCurStateKeys.add(keyBuilder.currentState(instanceName,
                                                         sessionId,
                                                         resourceName));

          CurrentState metaCurState = new CurrentState(resourceName);
          metaCurState.setBucketSize(message.getBucketSize());
          metaCurState.setStateModelDefRef(message.getStateModelDef());
          metaCurState.setSessionId(sessionId);
          metaCurState.setGroupMessageMode(message.getGroupMessageMode());
          String ftyName = message.getStateModelFactoryName();
          if (ftyName != null)
          {
            metaCurState.setStateModelFactoryName(ftyName);
          }
          else
          {
            metaCurState.setStateModelFactoryName(HelixConstants.DEFAULT_STATE_MODEL_FACTORY);
          }

          metaCurStates.add(metaCurState);
        }
      }
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    return _resourceStateModelMap.get(resourceName);
  }

  public void setBucketSize(String resource, int bucketSize)
  {
    CurrentState curStateMeta = _curStateMetaMap.get(resource);
    if (curStateMeta == null)
    {
      curStateMeta = new CurrentState(resource);
      _curStateMetaMap.put(resource, curStateMeta);
    }
    curStateMeta.setBucketSize(bucketSize);
  }
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  }
 
  public int getBucketSize(String resource)
  {
    int bucketSize = 0;
    CurrentState curStateMeta = _curStateMetaMap.get(resource);
    if (curStateMeta != null)
    {
      bucketSize = curStateMeta.getBucketSize(); 
    }
   
    return bucketSize;
  }
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    Builder keyBuilder = accessor.keyBuilder();

    String instanceName = manager.getInstanceName();
    String partition = _message.getPartitionName();
    String resourceName = _message.getResourceName();
    CurrentState currentStateDelta = new CurrentState(resourceName);

    StateTransitionError error = new StateTransitionError(type, code, e);
    _stateModel.rollbackOnError(_message, _notificationContext, error);
    // if the transition is not canceled, it should go into error state
    if (code == ErrorCode.ERROR)
    {
      currentStateDelta.setState(partition, "ERROR");
      _stateModel.updateState("ERROR");

      accessor.updateProperty(keyBuilder.currentState(instanceName,
                                                      _message.getTgtSessionId(),
                                                      resourceName),
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                                "localhost_3");
    AssertJUnit.assertEquals(pendingState, "SLAVE");

    ZNRecord record1 = new ZNRecord("testResourceName");
    // Add a current state that matches sessionId and one that does not match
    CurrentState stateWithLiveSession = new CurrentState(record1);
    stateWithLiveSession.setSessionId("session_3");
    stateWithLiveSession.setStateModelDefRef("MasterSlave");
    stateWithLiveSession.setState("testResourceName_1", "OFFLINE");
    ZNRecord record2 = new ZNRecord("testResourceName");
    CurrentState stateWithDeadSession = new CurrentState(record2);
    stateWithDeadSession.setSessionId("session_dead");
    stateWithDeadSession.setStateModelDefRef("MasterSlave");
    stateWithDeadSession.setState("testResourceName_1", "MASTER");

    accessor.setProperty(keyBuilder.currentState("localhost_3",
                                                 "session_3",
                                                 "testResourceName"),
                         stateWithLiveSession);
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                createCurStateNames.add(resourceName);
                createCurStateKeys.add(keyBuilder.currentState(instanceName,
                                                               sessionId,
                                                               resourceName));

                CurrentState metaCurState = new CurrentState(resourceName);
                metaCurState.setBucketSize(message.getBucketSize());
                metaCurState.setStateModelDefRef(message.getStateModelDef());
                metaCurState.setSessionId(sessionId);
                metaCurState.setGroupMessageMode(message.getGroupMessageMode());
                String ftyName = message.getStateModelFactoryName();
                if (ftyName != null)
                {
                  metaCurState.setStateModelFactoryName(ftyName);
                }
                else
                {
                  metaCurState.setStateModelFactoryName(HelixConstants.DEFAULT_STATE_MODEL_FACTORY);
                }

                metaCurStates.add(metaCurState);
              }
            }
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Related Classes of com.linkedin.helix.model.CurrentState

  • com.linkedin.helix.controller.stages.BestPossibleStateCalcStage
  • com.linkedin.helix.controller.stages.CurrentStateOutput
  • com.linkedin.helix.controller.stages.TestCurrentStateComputationStage
  • com.linkedin.helix.controller.stages.TestRebalancePipeline
  • com.linkedin.helix.controller.stages.TestResourceComputationStage
  • com.linkedin.helix.manager.zk.ZKHelixAdmin
  • com.linkedin.helix.messaging.handling.HelixStateTransitionHandler
  • com.linkedin.helix.messaging.handling.HelixTaskExecutor
  • com.linkedin.helix.participant.CustomCodeInvoker
  • com.linkedin.helix.participant.HelixStateMachineEngine
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