/*

  * 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.graph.AddressesAndPartitionsWritable;

 import java.io.DataInput;

 import java.io.DataOutput;

 import java.io.IOException;

 /**

  * Request for master sending addresses and partitions to workers

  */

 public class AddressesAndPartitionsRequest extends WritableRequest

     implements WorkerRequest {

   /** Addresses and partitions assignments */

   private AddressesAndPartitionsWritable addressesAndPartitions;

   /** Constructor for reflection */

   public AddressesAndPartitionsRequest() {

   }

   /**

    * Constructor

    *

    * @param addressesAndPartitions Addresses and partitions

    */

   public AddressesAndPartitionsRequest(

       AddressesAndPartitionsWritable addressesAndPartitions) {

     this.addressesAndPartitions = addressesAndPartitions;

   }

   @Override

   public void doRequest(ServerData serverData) {

     serverData.getServiceWorker().addressesAndPartitionsReceived(

         addressesAndPartitions);

   }

   @Override

   public RequestType getType() {

     return RequestType.ADDRESSES_AND_PARTITIONS_REQUEST;

   }

   @Override

   void writeRequest(DataOutput output) throws IOException {

     addressesAndPartitions.write(output);

   }

   @Override

   void readFieldsRequest(DataInput input) throws IOException {

     addressesAndPartitions =

         new AddressesAndPartitionsWritable();

     addressesAndPartitions.readFields(input);

   }

 }