Package org.apache.helix.api.accessor

Examples of org.apache.helix.api.accessor.ResourceAccessor

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    accessor.dropCluster();
  }

  private static void printExternalView(HelixConnection connection, ClusterId clusterId,
      ResourceId resourceId) {
    ResourceAccessor accessor = connection.createResourceAccessor(clusterId);
    ExternalView externalView = accessor.readExternalView(resourceId);
    System.out.println("ASSIGNMENTS:");
    for (PartitionId partitionId : externalView.getPartitionIdSet()) {
      System.out.println(partitionId + ": " + externalView.getStateMap(partitionId));
    }
  }
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  }

  private static void updateResource(ResourceConfig resource, ClusterId clusterId,
      HelixConnection connection) {
    // add some fields to the resource user config, then update it using the resource config delta
    ResourceAccessor accessor = connection.createResourceAccessor(clusterId);
    UserConfig userConfig = resource.getUserConfig();
    Map<String, String> mapField = Maps.newHashMap();
    mapField.put("k1", "v1");
    mapField.put("k2", "v2");
    userConfig.setMapField("sampleMap", mapField);
    ResourceConfig.Delta delta =
        new ResourceConfig.Delta(resource.getId()).setUserConfig(userConfig);
    accessor.updateResource(resource.getId(), delta);
  }
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public class PersistAssignmentStage extends AbstractBaseStage {
  @Override
  public void process(ClusterEvent event) throws Exception {
    HelixManager helixManager = event.getAttribute("helixmanager");
    HelixDataAccessor accessor = helixManager.getHelixDataAccessor();
    ResourceAccessor resourceAccessor = new ResourceAccessor(accessor);
    BestPossibleStateOutput assignments =
        event.getAttribute(AttributeName.BEST_POSSIBLE_STATE.toString());
    for (ResourceId resourceId : assignments.getAssignedResources()) {
      ResourceAssignment assignment = assignments.getResourceAssignment(resourceId);
      resourceAccessor.setResourceAssignment(resourceId, assignment);
    }
  }
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  ParticipantAccessor participantAccessor(String clusterName) {
    return new ParticipantAccessor(new ZKHelixDataAccessor(clusterName, _baseAccessor));
  }

  ResourceAccessor resourceAccessor(String clusterName) {
    return new ResourceAccessor(new ZKHelixDataAccessor(clusterName, _baseAccessor));
  }
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    int replicaCount = Integer.parseInt(optValues[2]);
    String groupTag = null;
    if (groupTagValues != null && groupTagValues.length > 0) {
      groupTag = groupTagValues[0];
    }
    ResourceAccessor accessor = resourceAccessor(clusterName);
    accessor.generateDefaultAssignment(ResourceId.from(resourceName), replicaCount, groupTag);
  }
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    String resourceName = optValues[1];
    String partitionName = optValues[2];

    ResourceId resourceId = ResourceId.from(resourceName);
    PartitionId partitionId = PartitionId.from(partitionName);
    ResourceAccessor accessor = resourceAccessor(clusterName);
    Resource resource = accessor.readResource(resourceId);

    StringBuilder sb = new StringBuilder();
    Map<ParticipantId, State> stateMap = resource.getExternalView().getStateMap(partitionId);
    sb.append(resourceName + "/" + partitionName + ", externalView: " + stateMap);
    PartitionedRebalancerContext partitionedContext =
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      results = keyValueMap(accessor.readUserConfig(participantId), null, keys);
      break;
    }
    case RESOURCE: {
      ResourceId resourceId = ResourceId.from(scopeArgs[1]);
      ResourceAccessor accessor = resourceAccessor(clusterName);
      results = keyValueMap(accessor.readUserConfig(resourceId), null, keys);
      break;
    }
    case PARTITION: {
      ResourceId resourceId = ResourceId.from(scopeArgs[1]);
      String partitionId = scopeArgs[2];
      ResourceAccessor accessor = resourceAccessor(clusterName);
      results = keyValueMap(accessor.readUserConfig(resourceId), partitionId, keys);
      break;
    }
    default:
      System.err.println("Non-recognized scopeType: " + scopeType);
      break;
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      accessor.setUserConfig(participantId, userConfig);
      break;
    }
    case RESOURCE: {
      ResourceId resourceId = ResourceId.from(scopeArgs[1]);
      ResourceAccessor accessor = resourceAccessor(clusterName);
      Scope<ResourceId> scope = Scope.resource(resourceId);
      UserConfig userConfig = userConfig(scope, null, keyValues);
      accessor.setUserConfig(resourceId, userConfig);
      break;
    }
    case PARTITION: {
      ResourceId resourceId = ResourceId.from(scopeArgs[1]);
      String partitionId = scopeArgs[2];
      ResourceAccessor accessor = resourceAccessor(clusterName);
      Scope<ResourceId> scope = Scope.resource(resourceId);
      UserConfig userConfig = userConfig(scope, partitionId, keyValues);
      accessor.setUserConfig(resourceId, userConfig);
      break;
    }
    default:
      System.err.println("Non-recognized scopeType: " + scopeType);
      break;
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  }

  void listResourceInfo(String[] optValues) {
    String clusterName = optValues[0];
    String resourceName = optValues[1];
    ResourceAccessor accessor = resourceAccessor(clusterName);
    ResourceId resourceId = ResourceId.from(resourceName);
    Resource resource = accessor.readResource(resourceId);
    StringBuilder sb =
        new StringBuilder("Resource ").append(resourceName).append(" in cluster ")
            .append(clusterName).append(":\n").append("externalView: ")
            .append(resource.getExternalView()).append(", userConfig: ")
            .append(resource.getUserConfig()).append(", rebalancerContext: ")
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      userConfig = clusterAccessor.readUserConfig();
      removeKeysFromUserConfig(userConfig, keys);
      clusterAccessor.setUserConfig(userConfig);
      break;
    case RESOURCE:
      ResourceAccessor resourceAccessor = resourceAccessor(clusterName);
      ResourceId resourceId = ResourceId.from(scopeArgs[1]);
      userConfig = resourceAccessor.readUserConfig(resourceId);
      removeKeysFromUserConfig(userConfig, keys);
      resourceAccessor.setUserConfig(resourceId, userConfig);
      break;
    case PARTICIPANT:
      ParticipantAccessor participantAccessor = participantAccessor(clusterName);
      ParticipantId participantId = ParticipantId.from(scopeArgs[1]);
      userConfig = participantAccessor.readUserConfig(participantId);
      removeKeysFromUserConfig(userConfig, keys);
      participantAccessor.setUserConfig(participantId, userConfig);
      break;
    case PARTITION:
      ResourceAccessor resourcePartitionAccessor = resourceAccessor(clusterName);
      PartitionId partitionId = PartitionId.from(scopeArgs[1]);
      userConfig = resourcePartitionAccessor.readUserConfig(partitionId.getResourceId());
      removePartitionFromResourceUserConfig(userConfig, partitionId, keys);
      resourcePartitionAccessor.setUserConfig(partitionId.getResourceId(), userConfig);
      break;
    }
  }
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Related Classes of org.apache.helix.api.accessor.ResourceAccessor

  • org.apache.helix.api.config.ResourceConfig
  • org.apache.helix.api.config.ResourceConfig.ResourceType
  • org.apache.helix.api.config.UserConfig
  • org.apache.helix.api.id.ResourceId
  • org.apache.helix.api.Resource
  • org.apache.helix.api.State
  • org.apache.helix.controller.rebalancer.context.CustomRebalancerContext
  • org.apache.helix.controller.rebalancer.context.PartitionedRebalancerContext
  • org.apache.helix.controller.rebalancer.context.RebalancerConfig
  • org.apache.helix.controller.rebalancer.context.RebalancerContext
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