Package org.apache.helix

Examples of org.apache.helix.ZNRecord

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  public void addStateModelDef(String clusterName,
                               String stateModelDefName,
                               String stateModelDefFile) throws IOException
  {
    ZNRecord record =
        (ZNRecord) (new ZNRecordSerializer().deserialize(readFile(stateModelDefFile)));
    if (record == null || record.getId() == null
        || !record.getId().equals(stateModelDefName))
    {
      throw new IllegalArgumentException("state model definition must have same id as state model def name");
    }
    addStateModelDef(clusterName, stateModelDefName, new StateModelDefinition(record));
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      @Override
      public ZNRecord update(ZNRecord currentData)
      {
        if (currentData == null)
        {
          currentData = new ZNRecord(ConstraintType.MESSAGE_CONSTRAINT.toString());
        }

        Map<String, String> map = currentData.getMapField(constraintId);
        if (map == null)
        {
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    {
      throw new HelixException("cannot find state model: " + currentIdealState.getStateModelDefRef());
    }
    String[] states = RebalanceUtil.parseStates(clusterName, stateModDef);

    ZNRecord newIdealStateRecord =
        DefaultIdealStateCalculator.convertToZNRecord(balancedRecord,
                                                             currentIdealState.getResourceName(),
                                                             states[0],
                                                             states[1]);
    Set<String> partitionSet = new HashSet<String>();
    partitionSet.addAll(newIdealStateRecord.getMapFields().keySet());
    partitionSet.addAll(newIdealStateRecord.getListFields().keySet());

    Map<String, String> reversePartitionIndex =
        (Map<String, String>) balancedRecord.get("reversePartitionIndex");
    for (String partition : partitionSet)
    {
      if (reversePartitionIndex.containsKey(partition))
      {
        String originPartitionName = reversePartitionIndex.get(partition);
        if (partition.equals(originPartitionName))
        {
          continue;
        }
        newIdealStateRecord.getMapFields()
                           .put(originPartitionName,
                                newIdealStateRecord.getMapField(partition));
        newIdealStateRecord.getMapFields().remove(partition);

        newIdealStateRecord.getListFields()
                           .put(originPartitionName,
                                newIdealStateRecord.getListField(partition));
        newIdealStateRecord.getListFields().remove(partition);
      }
    }

    newIdealStateRecord.getSimpleFields()
                       .putAll(currentIdealState.getRecord().getSimpleFields());
    IdealState newIdealState = new IdealState(newIdealStateRecord);
    setResourceIdealState(clusterName, newIdealStateRecord.getId(), newIdealState);
  }
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  }

  StringRepresentation getConfigScopes() throws Exception
  {
    StringRepresentation representation = null;
    ZNRecord record = new ZNRecord("Config");

    List<String> scopeList =
        Arrays.asList(ConfigScopeProperty.CLUSTER.toString(),
                      ConfigScopeProperty.RESOURCE.toString(),
                      ConfigScopeProperty.PARTICIPANT.toString(),
                      ConfigScopeProperty.PARTITION.toString());
    record.setListField("scopes", scopeList);

    representation =
        new StringRepresentation(ClusterRepresentationUtil.ZNRecordToJson(record),
                                 MediaType.APPLICATION_JSON);
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    ZkClient zkClient =
        (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
    ClusterSetup setupTool = new ClusterSetup(zkClient);
    HelixAdmin admin = setupTool.getClusterManagementTool();
    ZNRecord record = new ZNRecord(scopeProperty + " Config");

    List<String> configKeys = admin.getConfigKeys(scopeProperty, clusterName, keys);
    record.setListField(scopeProperty.toString(), configKeys);

    representation =
        new StringRepresentation(ClusterRepresentationUtil.ZNRecordToJson(record),
                                 MediaType.APPLICATION_JSON);
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    ZkClient zkClient =
        (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
    ClusterSetup setupTool = new ClusterSetup(zkClient);
    HelixAdmin admin = setupTool.getClusterManagementTool();
    ZNRecord record = new ZNRecord(scopeProperty + " Config");

    List<String> configKeys = admin.getConfigKeys(scopeProperty, clusterName, keys);
    Map<String, String> configs = admin.getConfig(scope, new HashSet<String>(configKeys));
    record.setSimpleFields(configs);

    representation =
        new StringRepresentation(ClusterRepresentationUtil.ZNRecordToJson(record),
                                 MediaType.APPLICATION_JSON);
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      JsonParameters jsonParameters = new JsonParameters(entity);
      String command = jsonParameters.getCommand();

      if (command.equalsIgnoreCase(ClusterSetup.addIdealState))
      {
        ZNRecord newIdealState = jsonParameters.getExtraParameter(JsonParameters.NEW_IDEAL_STATE);
        HelixDataAccessor accessor =
            ClusterRepresentationUtil.getClusterDataAccessor(zkClient, clusterName);

        accessor.setProperty(accessor.keyBuilder().idealStates(resourceName),
                             new IdealState(newIdealState));
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      instanceNames.add("localhost:123" + i);
    }
   
    Map<String, Object> resultOriginal = DefaultIdealStateCalculator.calculateInitialIdealState(instanceNames, partitions, replicas);
   
    ZNRecord idealState1 = DefaultIdealStateCalculator.convertToZNRecord(resultOriginal, "TestDB", "MASTER", "SLAVE");
   
    Map<String, Object> result1 = RebalanceUtil.buildInternalIdealState(new IdealState(idealState1));
   
    List<String> instanceNames2 = new ArrayList<String>();
    for(int i = 30;i < 35; i++)
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    list.add("listValue2");
    arg = new ZnodeOpArg(pathChild1, ZnodePropertyType.LIST, "+", "key2", list);
    command = new TestCommand(CommandType.MODIFY, arg);
    commandList.add(command);

    ZNRecord record = getExampleZNRecord();
    arg = new ZnodeOpArg(pathChild2, ZnodePropertyType.ZNODE, "+", record);
    command = new TestCommand(CommandType.MODIFY, arg);
    commandList.add(command);

    arg = new ZnodeOpArg(pathChild1, ZnodePropertyType.SIMPLE, "==", "key1");
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    ZnodeOpArg arg1 = new ZnodeOpArg(pathChild1, ZnodePropertyType.SIMPLE, "+", "key1", "simpleValue1-new");
    TestCommand command1 = new TestCommand(CommandType.MODIFY, new TestTrigger(0, 0, "simpleValue1"), arg1);
    commandList.add(command1);

    ZNRecord record = getExampleZNRecord();
    ZNRecord recordNew = new ZNRecord(record);
    recordNew.setSimpleField(IdealStateProperty.IDEAL_STATE_MODE.toString(), IdealStateModeProperty.AUTO.toString());
    arg = new ZnodeOpArg(pathChild2, ZnodePropertyType.ZNODE, "+", recordNew);
    command = new TestCommand(CommandType.MODIFY, new TestTrigger(0, 3000, record), arg);
    commandList.add(command);

    arg = new ZnodeOpArg(pathChild2, ZnodePropertyType.ZNODE, "+", record);
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