org.elasticsearch.transport.netty.NettyHeader Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.elasticsearch.transport.netty;
import org.elasticsearch.Version;
import org.jboss.netty.buffer.ChannelBuffer;
/**
*/
public class NettyHeader {
public static final int HEADER_SIZE = 2 + 4 + 8 + 1 + 4;
public static void writeHeader(ChannelBuffer buffer, long requestId, byte status, Version version) {
int index = buffer.readerIndex();
buffer.setByte(index, 'E');
index += 1;
buffer.setByte(index, 'S');
index += 1;
// write the size, the size indicates the remaining message size, not including the size int
buffer.setInt(index, buffer.readableBytes() - 6);
index += 4;
buffer.setLong(index, requestId);
index += 8;
buffer.setByte(index, status);
index += 1;
buffer.setInt(index, version.id);
}
}