/*

  * 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.netty.handler;

 import org.apache.giraph.comm.flow_control.FlowControl;

 import org.apache.giraph.comm.requests.MasterRequest;

 import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;

 import org.apache.giraph.graph.TaskInfo;

 import org.apache.giraph.master.MasterGlobalCommHandler;

 /** Handler for requests on master */

 public class MasterRequestServerHandler extends

     RequestServerHandler<MasterRequest> {

   /** Aggregator handler */

   private final MasterGlobalCommHandler commHandler;

   /**

    * Constructor

    *

    * @param workerRequestReservedMap Worker request reservation map

    * @param conf                     Configuration

    * @param myTaskInfo               Current task info

    * @param commHandler              Master communication handler

    * @param exceptionHandler         Handles uncaught exceptions

    * @param flowControl              Reference to the flow control used

    */

   public MasterRequestServerHandler(

       WorkerRequestReservedMap workerRequestReservedMap,

       ImmutableClassesGiraphConfiguration conf,

       TaskInfo myTaskInfo,

       MasterGlobalCommHandler commHandler,

       Thread.UncaughtExceptionHandler exceptionHandler,

       FlowControl flowControl) {

     super(workerRequestReservedMap, conf, myTaskInfo, exceptionHandler);

     this.commHandler = commHandler;

     this.flowControl = flowControl;

   }

   @Override

   public void processRequest(MasterRequest request) {

     request.doRequest(commHandler);

   }

   /**

    * Factory for {@link MasterRequestServerHandler}

    */

   public static class Factory implements RequestServerHandler.Factory {

     /** Master aggregator handler */

     private final MasterGlobalCommHandler commHandler;

     /** Flow control used in sending requests */

     private FlowControl flowControl;

     /**

      * Constructor

      *

      * @param commHandler Master global communication handler

      */

     public Factory(MasterGlobalCommHandler commHandler) {

       this.commHandler = commHandler;

     }

     @Override

     public RequestServerHandler newHandler(

         WorkerRequestReservedMap workerRequestReservedMap,

         ImmutableClassesGiraphConfiguration conf,

         TaskInfo myTaskInfo,

         Thread.UncaughtExceptionHandler exceptionHandler) {

       return new MasterRequestServerHandler(workerRequestReservedMap, conf,

           myTaskInfo, commHandler, exceptionHandler, flowControl);

     }

     @Override

     public void setFlowControl(FlowControl flowControl) {

       this.flowControl = flowControl;

     }

   }

 }