/*

  * 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.utils;

 import io.netty.buffer.ByteBuf;

 import io.netty.buffer.ByteBufInputStream;

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

 import java.io.IOException;

 import org.apache.log4j.Logger;

 /**

  * RequestUtils utility class

  */

 public class RequestUtils {

   /** Logger */

   public static final Logger LOG = Logger.getLogger(RequestUtils.class);

   /**

    * Private Constructor

    */

   private RequestUtils() {

   }

   /**

    * decodeWritableRequest based on predicate

    *

    * @param buf ByteBuf

    * @param request writableRequest

    * @return properly initialized writableRequest

    * @throws IOException

    */

   public static WritableRequest decodeWritableRequest(ByteBuf buf,

     WritableRequest request) throws IOException {

     ByteBufInputStream input = new ByteBufInputStream(buf);

     request.readFields(input);

     return request;

   }

 }