org.anhonesteffort.chnlbrkr.ChnlBrkrServer.java Source code

Introduction

Here is the source code for org.anhonesteffort.chnlbrkr.ChnlBrkrServer.java

Source

/*
 * Copyright (C) 2015 An Honest Effort LLC, coping.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.anhonesteffort.chnlbrkr;

import com.lambdaworks.redis.RedisClient;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.timeout.IdleStateHandler;
import org.anhonesteffort.chnlbrkr.chnlzr.IdleChnlzrConnectionFactory;
import org.anhonesteffort.chnlbrkr.stream.ChannelStreamerFactory;
import org.anhonesteffort.chnlzr.CapnpUtil;
import org.anhonesteffort.chnlbrkr.chnlzr.IdleChnlzrController;
import org.anhonesteffort.chnlzr.pipeline.BaseMessageDecoder;
import org.anhonesteffort.chnlzr.pipeline.BaseMessageEncoder;
import org.anhonesteffort.chnlzr.pipeline.IdleStateHeartbeatWriter;

import java.util.Optional;
import java.util.concurrent.TimeUnit;

import static org.anhonesteffort.chnlzr.Proto.HostId;

public class ChnlBrkrServer {

    private final ChnlBrkrConfig config;
    private final int listenPort;
    private final HostId.Reader hostId;
    private final Optional<String> redisUri;

    public ChnlBrkrServer(ChnlBrkrConfig config, String hostname, int listenPort, Optional<String> redisUri) {
        this.config = config;
        this.listenPort = listenPort;
        this.redisUri = redisUri;
        hostId = CapnpUtil.hostId(hostname, listenPort);
    }

    public void run() throws InterruptedException {
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        ServerBootstrap bootstrap = new ServerBootstrap();

        IdleChnlzrConnectionFactory idleFactory = new IdleChnlzrConnectionFactory(config);
        IdleChnlzrController idleController = new IdleChnlzrController(idleFactory);
        ChannelStreamerFactory streamFactory = new ChannelStreamerFactory(config);

        Optional<RedisClient> redisClient = (redisUri.isPresent()) ? Optional.of(RedisClient.create(redisUri.get()))
                : Optional.<RedisClient>empty();

        BrkrList brkrList = new BrkrList(config, hostId, workerGroup, redisClient);
        Optional<ChnlzrIdPubSub> chnlzrPubSub = (redisClient.isPresent())
                ? Optional.of(new ChnlzrIdPubSub(config, redisClient.get(), idleController))
                : Optional.empty();

        try {

            bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true)
                    .childOption(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, config.bufferHighWaterMark())
                    .childOption(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, config.bufferLowWaterMark())
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) {
                            ch.pipeline().addLast("idle state", new IdleStateHandler(0, 0,
                                    config.idleStateThresholdMs(), TimeUnit.MILLISECONDS));
                            ch.pipeline().addLast("heartbeat", IdleStateHeartbeatWriter.INSTANCE);
                            ch.pipeline().addLast("encoder", BaseMessageEncoder.INSTANCE);
                            ch.pipeline().addLast("decoder", new BaseMessageDecoder());
                            ch.pipeline().addLast("brkrlist", brkrList);
                            ch.pipeline().addLast("handler",
                                    new ServerHandler(config, idleController, streamFactory, chnlzrPubSub));
                        }
                    });

            ChannelFuture channelFuture = bootstrap.bind(listenPort).sync();
            channelFuture.channel().closeFuture().sync();

        } finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
            if (redisClient.isPresent()) {
                redisClient.get().shutdown();
            }
        }
    }

    public static void main(String[] args) throws Exception {
        new ChnlBrkrServer(new ChnlBrkrConfig(), (args.length > 0) ? args[0] : "localhost",
                (args.length > 1) ? Integer.parseInt(args[1]) : 9090,
                (args.length > 2) ? Optional.of(args[2]) : Optional.<String>empty()).run();
    }

}