| /** |
| * 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.storm.pacemaker.codec; |
| |
| import org.jboss.netty.handler.codec.oneone.OneToOneEncoder; |
| import org.jboss.netty.channel.ChannelHandlerContext; |
| import org.jboss.netty.channel.Channel; |
| import backtype.storm.generated.HBMessage; |
| import backtype.storm.generated.HBMessageData; |
| import backtype.storm.generated.HBServerMessageType; |
| import org.jboss.netty.buffer.ChannelBuffers; |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import backtype.storm.utils.Utils; |
| import backtype.storm.messaging.netty.ControlMessage; |
| import backtype.storm.messaging.netty.SaslMessageToken; |
| import backtype.storm.messaging.netty.INettySerializable; |
| import java.io.IOException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.thrift.TBase; |
| |
| public class ThriftEncoder extends OneToOneEncoder { |
| |
| private static final Logger LOG = LoggerFactory |
| .getLogger(ThriftEncoder.class); |
| |
| private HBMessage encodeNettySerializable(INettySerializable netty_message, |
| HBServerMessageType mType) { |
| |
| HBMessageData message_data = new HBMessageData(); |
| HBMessage m = new HBMessage(); |
| try { |
| ChannelBuffer cbuffer = netty_message.buffer(); |
| if(cbuffer.hasArray()) { |
| message_data.set_message_blob(cbuffer.array()); |
| } |
| else { |
| byte buff[] = new byte[netty_message.encodeLength()]; |
| cbuffer.readBytes(buff, 0, netty_message.encodeLength()); |
| message_data.set_message_blob(buff); |
| } |
| m.set_type(mType); |
| m.set_data(message_data); |
| return m; |
| } |
| catch( IOException e) { |
| LOG.error("Failed to encode NettySerializable: ", e); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) { |
| if(msg == null) { |
| return null; |
| } |
| |
| LOG.debug("Trying to encode: " + msg.getClass().toString() + " : " + msg.toString()); |
| |
| HBMessage m; |
| if(msg instanceof INettySerializable) { |
| INettySerializable nettyMsg = (INettySerializable)msg; |
| |
| HBServerMessageType type; |
| if(msg instanceof ControlMessage) { |
| type = HBServerMessageType.CONTROL_MESSAGE; |
| } |
| else if(msg instanceof SaslMessageToken) { |
| type = HBServerMessageType.SASL_MESSAGE_TOKEN; |
| } |
| else { |
| LOG.error("Didn't recognise INettySerializable: " + nettyMsg.toString()); |
| throw new RuntimeException("Unrecognized INettySerializable."); |
| } |
| m = encodeNettySerializable(nettyMsg, type); |
| } |
| else { |
| m = (HBMessage)msg; |
| } |
| |
| try { |
| byte serialized[] = Utils.thriftSerialize(m); |
| ChannelBuffer ret = ChannelBuffers.directBuffer(serialized.length + 4); |
| |
| ret.writeInt(serialized.length); |
| ret.writeBytes(serialized); |
| |
| return ret; |
| } |
| catch (RuntimeException e) { |
| LOG.error("Failed to serialize.", e); |
| throw e; |
| } |
| } |
| } |