GatewayClientChannelHandler.java

/*
 * (C) Copyright 2015-2016 the original author or authors.
 *
 * 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.
 *
 * Contributors:
 *   ohun@live.cn (夜色)
 */

package com.mpush.client.gateway.handler;


import com.mpush.api.PacketReceiver;
import com.mpush.api.connection.Connection;
import com.mpush.api.connection.ConnectionManager;
import com.mpush.api.event.ConnectionCloseEvent;
import com.mpush.api.event.ConnectionConnectEvent;
import com.mpush.api.protocol.Packet;
import com.mpush.netty.connection.NettyConnection;
import com.mpush.tools.event.EventBus;
import com.mpush.tools.log.Logs;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Created by ohun on 2015/12/19.
 *
 * @author ohun@live.cn
 */
@ChannelHandler.Sharable
public final class GatewayClientChannelHandler extends ChannelInboundHandlerAdapter {

    private static final Logger LOGGER = LoggerFactory.getLogger(GatewayClientChannelHandler.class);

    private final ConnectionManager connectionManager;

    private final PacketReceiver receiver;

    public GatewayClientChannelHandler(ConnectionManager connectionManager, PacketReceiver receiver) {
        this.connectionManager = connectionManager;
        this.receiver = receiver;
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        Logs.CONN.info("receive gateway packet={}, channel={}", msg, ctx.channel());
        Packet packet = (Packet) msg;
        receiver.onReceive(packet, connectionManager.get(ctx.channel()));
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        Connection connection = connectionManager.get(ctx.channel());
        Logs.CONN.error("client caught ex, conn={}", connection);
        LOGGER.error("caught an ex, channel={}, conn={}", ctx.channel(), connection, cause);
        ctx.close();
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        Logs.CONN.info("client connected conn={}", ctx.channel());
        Connection connection = new NettyConnection();
        connection.init(ctx.channel(), false);
        connectionManager.add(connection);
        EventBus.I.post(new ConnectionConnectEvent(connection));
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        Connection connection = connectionManager.removeAndClose(ctx.channel());
        EventBus.I.post(new ConnectionCloseEvent(connection));
        Logs.CONN.info("client disconnected conn={}", connection);
    }
}