1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package org.apache.giraph.utils; 20 21 import io.netty.buffer.ByteBuf; 22 import io.netty.buffer.ByteBufInputStream; 23 import org.apache.giraph.comm.requests.WritableRequest; 24 25 import java.io.IOException; 26 import org.apache.log4j.Logger; 27 28 /** 29 * RequestUtils utility class 30 */ 31 public class RequestUtils { 32 /** Logger */ 33 public static final Logger LOG = Logger.getLogger(RequestUtils.class); 34 35 /** 36 * Private Constructor 37 */ 38 private RequestUtils() { 39 } 40 41 /** 42 * decodeWritableRequest based on predicate 43 * 44 * @param buf ByteBuf 45 * @param request writableRequest 46 * @return properly initialized writableRequest 47 * @throws IOException 48 */ 49 public static WritableRequest decodeWritableRequest(ByteBuf buf, 50 WritableRequest request) throws IOException { 51 ByteBufInputStream input = new ByteBufInputStream(buf); 52 request.readFields(input); 53 return request; 54 } 55 }