/*
 * 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.codec;

import com.navercorp.pinpoint.rpc.packet.Packet;

import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author emeroad
 */
public class PacketEncoder extends OneToOneEncoder {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Override
    protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
        if (!(msg instanceof Packet)) {
            logger.error("invalid packet:{} channel:{}", msg, channel);
            return null;
        }
        Packet packet = (Packet) msg;
        return packet.toBuffer();
    }
}