/*
* Copyright 2014 NAVER Corp.
*
* Licensed 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 com.navercorp.pinpoint.rpc.packet.stream;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import com.navercorp.pinpoint.rpc.packet.PacketType;
import com.navercorp.pinpoint.rpc.packet.PayloadPacket;
import com.navercorp.pinpoint.rpc.util.AssertUtils;
/**
* @author koo.taejin
*/
public class StreamCreatePacket extends BasicStreamPacket {
private final static short PACKET_TYPE = PacketType.APPLICATION_STREAM_CREATE;
private final byte[] payload;
public StreamCreatePacket(int streamChannelId, byte[] payload) {
super(streamChannelId);
AssertUtils.assertNotNull(payload);
this.payload = payload;
}
@Override
public short getPacketType() {
return PACKET_TYPE;
}
@Override
public byte[] getPayload() {
return payload;
}
@Override
public ChannelBuffer toBuffer() {
ChannelBuffer header = ChannelBuffers.buffer(2 + 4 + 4);
header.writeShort(getPacketType());
header.writeInt(getStreamChannelId());
return PayloadPacket.appendPayload(header, payload);
}
public static StreamCreatePacket readBuffer(short packetType, ChannelBuffer buffer) {
assert packetType == PACKET_TYPE;
if (buffer.readableBytes() < 8) {
buffer.resetReaderIndex();
return null;
}
final int streamChannelId = buffer.readInt();
final ChannelBuffer payload = PayloadPacket.readPayload(buffer);
if (payload == null) {
return null;
}
final StreamCreatePacket packet = new StreamCreatePacket(streamChannelId, payload.array());
return packet;
}
}