ClusterFunctionProvider.java

/**
 *
 *  Copyright 2017 StreamSets Inc.
 *
 *  Licensed under the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package com.streamsets.pipeline;

import com.streamsets.pipeline.impl.ClusterFunction;
import org.apache.spark.TaskContext;

public class ClusterFunctionProvider {

  private static ClusterFunction clusterFunction;

  private ClusterFunctionProvider() {

  }

  public static synchronized ClusterFunction getClusterFunction() throws Exception {
    if (clusterFunction == null) {
      clusterFunction = (ClusterFunction)BootstrapCluster.getClusterFunction(TaskContext.get().partitionId());
    }
    return clusterFunction;
  }
}