com.curlymaple.server.ServerHandler.java Source code

Introduction

Here is the source code for com.curlymaple.server.ServerHandler.java

Source

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 com.curlymaple.server;

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.AttributeKey;

import java.io.IOException;

import net.sf.json.JSONObject;

import org.apache.log4j.Logger;

import com.curlymaple.server.message.LogicManager;

/**
 * Handles a server-side channel.
 */
@Sharable
public class ServerHandler extends SimpleChannelInboundHandler<String> {

    private static final Logger logger = Logger.getLogger("server");

    private AttributeKey<MemoryData> key = new AttributeKey<MemoryData>("u");

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        Channel channel = ctx.pipeline().channel();
        MemoryData md = new MemoryData(channel);
        ctx.attr(key).set(md);
    }

    @Override
    protected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
        try {
            // logger.info(msg);
            if (null == msg || "".equals(msg)) {
                return;
            }
            JSONObject json = JSONObject.fromObject(msg);
            IC2SCommand command = MessageDispatcher.dispatcher(json);
            if (null == command) {
                return;
            }
            MemoryData md = ctx.attr(key).get();
            JSONObject param = JSONObject.fromObject(json.get("p"));
            command.execute(param, md);
        } catch (Exception e) {
            ctx.pipeline().channel().close();
            ctx.pipeline().channel().disconnect();
            logger.error("messageReceived", e);
        }
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        MemoryData md = ctx.attr(key).get();
        LogicManager.getInstance().removeMemoryData(md);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        boolean isIOException = cause instanceof IOException;
        if (isIOException) {
            logger.info(cause.getMessage());
        } else {
            logger.error("exception:", cause);
        }
        ctx.close();
    }

}