network/protocol/AbstractMessage.java

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *    http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 package org.apache.spark.network.protocol;
0019
0020 import com.google.common.base.Objects;
0021
0022 import org.apache.spark.network.buffer.ManagedBuffer;
0023
0024 /**
0025  * Abstract class for messages which optionally contain a body kept in a separate buffer.
0026  */
0027 public abstract class AbstractMessage implements Message {
0028   private final ManagedBuffer body;
0029   private final boolean isBodyInFrame;
0030
0031   protected AbstractMessage() {
0032     this(null, false);
0033   }
0034
0035   protected AbstractMessage(ManagedBuffer body, boolean isBodyInFrame) {
0036     this.body = body;
0037     this.isBodyInFrame = isBodyInFrame;
0038   }
0039
0040   @Override
0041   public ManagedBuffer body() {
0042     return body;
0043   }
0044
0045   @Override
0046   public boolean isBodyInFrame() {
0047     return isBodyInFrame;
0048   }
0049
0050   protected boolean equals(AbstractMessage other) {
0051     return isBodyInFrame == other.isBodyInFrame && Objects.equal(body, other.body);
0052   }
0053
0054 }