Package org.apache.helix.lock

Examples of org.apache.helix.lock.HelixLock

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  }

  @Override
  public boolean createCluster(ClusterConfig cluster) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.cluster(clusterId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.createCluster(cluster);
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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  }

  @Override
  public boolean dropCluster() {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.cluster(clusterId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.dropCluster();
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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  }

  @Override
  public Cluster readCluster() {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.cluster(clusterId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.readCluster();
      } finally {
        lock.unlock();
      }
    }
    return null;
  }
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    if (participant == null) {
      LOG.error("Participant config cannot be null");
      return false;
    }
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.participant(participant.getId()));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.addParticipant(participant);
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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  }

  @Override
  public boolean dropParticipant(ParticipantId participantId) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.participant(participantId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.dropParticipant(participantId);
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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    if (resource == null) {
      LOG.error("Resource config cannot be null");
      return false;
    }
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.resource(resource.getId()));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.addResource(resource);
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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  }

  @Override
  public boolean dropResource(ResourceId resourceId) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.resource(resourceId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.dropResource(resourceId);
      } finally {
        lock.unlock();
      }
    }
    return false;
  }
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  }

  @Override
  public ClusterConfig updateCluster(ClusterConfig.Delta clusterDelta) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.cluster(clusterId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.updateCluster(clusterDelta);
      } finally {
        lock.unlock();
      }
    }
    return null;
  }
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  }

  @Override
  public Participant readParticipant(ParticipantId participantId) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.participant(participantId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.readParticipant(participantId);
      } finally {
        lock.unlock();
      }
    }
    return null;
  }
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  @Override
  public ParticipantConfig updateParticipant(ParticipantId participantId,
      ParticipantConfig.Delta participantDelta) {
    ClusterId clusterId = clusterId();
    HelixLock lock = _lockProvider.getLock(clusterId, Scope.participant(participantId));
    boolean locked = lock.lock();
    if (locked) {
      try {
        return _clusterAccessor.updateParticipant(participantId, participantDelta);
      } finally {
        lock.unlock();
      }
    }
    return null;
  }
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Related Classes of org.apache.helix.lock.HelixLock

  • org.apache.helix.api.accessor.AtomicClusterAccessor
  • org.apache.helix.api.accessor.AtomicParticipantAccessor
  • org.apache.helix.api.accessor.AtomicResourceAccessor
  • org.apache.helix.lock.zk.TestZKHelixLock
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