content: /**
   * Licensed to 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.datatorrent.apps.copy;
  
  import org.apache.apex.malhar.lib.io.fs.FSInputModule;
  import org.apache.apex.malhar.lib.io.fs.HDFSFileCopyModule;
  import org.apache.hadoop.conf.Configuration;
  
  import com.datatorrent.api.DAG;
  import com.datatorrent.api.DAG.Locality;
  import com.datatorrent.api.StreamingApplication;
  import com.datatorrent.api.annotation.ApplicationAnnotation;
  
  /**
   * Application for HDFS to HDFS file copy
   *
   * @since 3.4.0
   */
  @ApplicationAnnotation(name = "HDFSFileCopyApp")
  public class HDFSFileCopyApp implements StreamingApplication
  {
    @Override
    public void populateDAG(DAG dag, Configuration conf)
    {
  
      FSInputModule inputModule = dag.addModule("HDFSInputModule", new FSInputModule());
      HDFSFileCopyModule outputModule = dag.addModule("HDFSFileCopyModule", new HDFSFileCopyModule());
  
      dag.addStream("FileMetaData", inputModule.filesMetadataOutput, outputModule.filesMetadataInput);
      dag.addStream("BlocksMetaData", inputModule.blocksMetadataOutput, outputModule.blocksMetadataInput)
          .setLocality(Locality.THREAD_LOCAL);
      dag.addStream("BlocksData", inputModule.messages, outputModule.blockData).setLocality(Locality.THREAD_LOCAL);
    }
  
  }
  