com.mpush.core.server.GatewayServer.java Source code

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Here is the source code for com.mpush.core.server.GatewayServer.java

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/*
 * (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 ()
 */

package com.mpush.core.server;

import com.mpush.api.protocol.Command;
import com.mpush.api.service.Listener;
import com.mpush.common.MessageDispatcher;
import com.mpush.core.handler.GatewayPushHandler;
import com.mpush.netty.server.NettyTCPServer;
import com.mpush.tools.config.CC;
import com.mpush.tools.config.CC.mp.net.rcv_buf;
import com.mpush.tools.config.CC.mp.net.snd_buf;
import com.mpush.tools.thread.NamedPoolThreadFactory;
import com.mpush.tools.thread.ThreadNames;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.sctp.nio.NioSctpServerChannel;
import io.netty.channel.udt.nio.NioUdtProvider;
import io.netty.handler.traffic.GlobalChannelTrafficShapingHandler;

import java.nio.channels.spi.SelectorProvider;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;

import static com.mpush.tools.config.CC.mp.net.traffic_shaping.gateway_server.*;
import static com.mpush.tools.config.CC.mp.net.write_buffer_water_mark.gateway_server_high;
import static com.mpush.tools.config.CC.mp.net.write_buffer_water_mark.gateway_server_low;
import static com.mpush.tools.thread.ThreadNames.T_TRAFFIC_SHAPING;

/**
 * Created by ohun on 2015/12/30.
 *
 * @author ohun@live.cn
 */
public final class GatewayServer extends NettyTCPServer {
    private static GatewayServer I;

    private ServerChannelHandler channelHandler;
    private ServerConnectionManager connectionManager;
    private GlobalChannelTrafficShapingHandler trafficShapingHandler;
    private ScheduledExecutorService trafficShapingExecutor;

    public static GatewayServer I() {
        if (I == null) {
            synchronized (GatewayServer.class) {
                if (I == null) {
                    I = new GatewayServer();
                }
            }
        }
        return I;
    }

    private GatewayServer() {
        super(CC.mp.net.gateway_server_port);
    }

    @Override
    public void init() {
        super.init();
        MessageDispatcher receiver = new MessageDispatcher();
        receiver.register(Command.GATEWAY_PUSH, new GatewayPushHandler());
        connectionManager = new ServerConnectionManager(false);
        channelHandler = new ServerChannelHandler(false, connectionManager, receiver);

        if (CC.mp.net.traffic_shaping.gateway_server.enabled) {//?????
            trafficShapingExecutor = Executors
                    .newSingleThreadScheduledExecutor(new NamedPoolThreadFactory(T_TRAFFIC_SHAPING));
            trafficShapingHandler = new GlobalChannelTrafficShapingHandler(trafficShapingExecutor,
                    write_global_limit, read_global_limit, write_channel_limit, read_channel_limit, check_interval);
        }
    }

    @Override
    public void stop(Listener listener) {
        super.stop(listener);
        if (trafficShapingHandler != null) {
            trafficShapingHandler.release();
            trafficShapingExecutor.shutdown();
        }
        if (connectionManager != null) {
            connectionManager.destroy();
        }
    }

    @Override
    protected String getBossThreadName() {
        return ThreadNames.T_GATEWAY_BOSS;
    }

    @Override
    protected String getWorkThreadName() {
        return ThreadNames.T_GATEWAY_WORKER;
    }

    @Override
    protected int getIoRate() {
        return 100;
    }

    @Override
    protected int getWorkThreadNum() {
        return CC.mp.thread.pool.gateway_server_work;
    }

    @Override
    protected void initPipeline(ChannelPipeline pipeline) {
        super.initPipeline(pipeline);
        if (trafficShapingHandler != null) {
            pipeline.addLast(trafficShapingHandler);
        }
    }

    @Override
    protected void initOptions(ServerBootstrap b) {
        super.initOptions(b);
        if (snd_buf.gateway_server > 0)
            b.childOption(ChannelOption.SO_SNDBUF, snd_buf.gateway_server);
        if (rcv_buf.gateway_server > 0)
            b.childOption(ChannelOption.SO_RCVBUF, rcv_buf.gateway_server);
        /**
         * ??????????
         * ???????????????
         * ????????
         * ????????
         * ??????
         * ???NettyChannelOutboundBuffer
         * buffernetty?channel write?buffer???????(?channelbuffer)
         * ??32(32?)32?
         * ?(?TCP??)
         * ??buffer???(?swap?linux killer)
         * ?channel?channel?active?
         *
         * ChannelOutboundBuffer????
         * buffer??channelisWritable??false
         * buffer??isWritable??trueisWritablefalse????
         * ???64K?32K???????
         */
        if (gateway_server_low > 0 && gateway_server_high > 0) {
            b.childOption(ChannelOption.WRITE_BUFFER_WATER_MARK,
                    new WriteBufferWaterMark(gateway_server_low, gateway_server_high));
        }
    }

    @Override
    public ChannelHandler getChannelHandler() {
        return channelHandler;
    }

    @Override
    public ChannelFactory<? extends ServerChannel> getChannelFactory() {
        if (CC.mp.net.tcpGateway())
            return super.getChannelFactory();
        if (CC.mp.net.udtGateway())
            return NioUdtProvider.BYTE_ACCEPTOR;
        if (CC.mp.net.sctpGateway())
            return NioSctpServerChannel::new;
        return super.getChannelFactory();
    }

    @Override
    public SelectorProvider getSelectorProvider() {
        if (CC.mp.net.tcpGateway())
            return super.getSelectorProvider();
        if (CC.mp.net.udtGateway())
            return NioUdtProvider.BYTE_PROVIDER;
        if (CC.mp.net.sctpGateway())
            return super.getSelectorProvider();
        return super.getSelectorProvider();
    }
}