/*

  * 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 org.apache.giraph.comm.requests;

 import org.apache.giraph.comm.ServerData;

 import org.apache.giraph.partition.Partition;

 import org.apache.hadoop.io.Writable;

 import org.apache.hadoop.io.WritableComparable;

 import org.apache.log4j.Logger;

 import java.io.DataInput;

 import java.io.DataOutput;

 import java.io.IOException;

 /**

  * Send a collection of vertices for a partition.  Note that this doesn't

  * use a cache - might want to optimize in the future.

  *

  * @param <I> Vertex id

  * @param <V> Vertex data

  * @param <E> Edge data

  */

 @SuppressWarnings("rawtypes")

 public class SendVertexRequest<I extends WritableComparable,

     V extends Writable, E extends Writable> extends

     WritableRequest<I, V, E> implements WorkerRequest<I, V, E> {

   /** Class logger */

   private static final Logger LOG =

       Logger.getLogger(SendVertexRequest.class);

   /** Partition */

   private Partition<I, V, E> partition;

   /**

    * Constructor used for reflection only

    */

   public SendVertexRequest() { }

   /**

    * Constructor for sending a request.

    *

    * @param partition Partition to send the request to

    */

   public SendVertexRequest(Partition<I, V, E> partition) {

     this.partition = partition;

   }

   @Override

   public void readFieldsRequest(DataInput input) throws IOException {

     partition = getConf().createPartition(-1, null);

     partition.readFields(input);

   }

   @Override

   public void writeRequest(DataOutput output) throws IOException {

     partition.write(output);

   }

   @Override

   public RequestType getType() {

     return RequestType.SEND_VERTEX_REQUEST;

   }

   @Override

   public void doRequest(ServerData<I, V, E> serverData) {

     serverData.getPartitionStore().addPartition(partition);

   }

   @Override

   public int getSerializedSize() {

     return WritableRequest.UNKNOWN_SIZE;

   }

 }