Java tutorial
/** The MIT License (MIT) Copyright (c) <2015> <author or authors> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.zhucode.longio.transport.netty; import java.net.URI; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import java.util.concurrent.Callable; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.Executor; import java.util.concurrent.Executors; import java.util.concurrent.atomic.AtomicLong; import com.zhucode.longio.callback.CallbackDispatcher; import com.zhucode.longio.callback.InvocationTask; import com.zhucode.longio.message.Dispatcher; import com.zhucode.longio.message.MessageBlock; import com.zhucode.longio.message.MessageCallback; import com.zhucode.longio.protocol.Protocol; import com.zhucode.longio.protocol.ProtocolFactory; import com.zhucode.longio.transport.Client; import com.zhucode.longio.transport.Connector; import com.zhucode.longio.transport.Endpoint; import com.zhucode.longio.transport.ProtocolType; import com.zhucode.longio.transport.TransportType; import io.netty.bootstrap.ServerBootstrap; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelInitializer; import io.netty.channel.ChannelOption; import io.netty.channel.ChannelPipeline; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.SocketChannel; import io.netty.channel.socket.nio.NioServerSocketChannel; import io.netty.handler.codec.LengthFieldBasedFrameDecoder; import io.netty.handler.codec.LengthFieldPrepender; import io.netty.handler.codec.http.HttpClientCodec; import io.netty.handler.codec.http.HttpObjectAggregator; import io.netty.handler.codec.http.HttpServerCodec; import io.netty.handler.timeout.IdleStateHandler; import io.netty.util.AttributeKey; /** * @author zhu jinxian * @date 20151012 * */ public class NettyConnector implements Connector { private ConcurrentHashMap<Long, ChannelHandlerContext> ctxs = new ConcurrentHashMap<Long, ChannelHandlerContext>(); private AtomicLong sessionId = new AtomicLong(1000000); protected static AttributeKey<Long> sessionKey = AttributeKey.valueOf("sid"); private NioEventLoopGroup bossGroup; private NioEventLoopGroup workerGroup; private Executor exe = Executors.newCachedThreadPool(); private List<Endpoint> endpoints = new ArrayList<Endpoint>(); private CallbackDispatcher callbackDispatcher = new CallbackDispatcher(); public NettyConnector() { bossGroup = new NioEventLoopGroup(); workerGroup = new NioEventLoopGroup(); } public long registHandlerContext(ChannelHandlerContext ctx) { long sid = sessionId.addAndGet(1); ctx.channel().attr(sessionKey).set(sid); ctxs.put(sid, ctx); return sid; } public void unregistHandlerContext(ChannelHandlerContext ctx) { long sid = ctx.channel().attr(sessionKey).get(); ctxs.remove(sid); } @Override public int getConnectId() { return 0; } @Override public void sendMessage(MessageBlock message) { this.send(message); } protected ChannelFuture send(MessageBlock message) { long sid = message.getSessionId(); ChannelHandlerContext ctx = ctxs.get(sid); AttributeKey<AbstractNettyHandler> handlerKey = AttributeKey.valueOf("AbstractNettyHandler"); AbstractNettyHandler handler = ctx.attr(handlerKey).get(); ChannelFuture future = handler.sendMessage(ctx, message); return future; } @Override public void start(int port, Dispatcher dispatcher, TransportType tt, ProtocolType pt, String pkg) throws Exception { Endpoint ep = new Endpoint(pkg, port, tt, pt); ep.setConnector(this); ep.setDispatcher(dispatcher); this.endpoints.add(ep); if (port <= 0) { return; } exe.execute(new Runnable() { @Override public void run() { switch (tt) { case HTTP: runOneHttpServer(port, dispatcher, pt); break; case SOCKET: runOneRawSocketServer(port, dispatcher, pt); default: break; } } }); } @Override public void start(int port, Dispatcher dispatcher, TransportType tt, ProtocolType pt) throws Exception { start(port, dispatcher, tt, pt, "*"); } private Protocol getProtocolParser(ProtocolType pt) { return ProtocolFactory.getProtocol(pt); } private void runOneHttpServer(int port, Dispatcher dispatcher, ProtocolType pt) { ServerBootstrap b = new ServerBootstrap(); b.group(bossGroup, workerGroup); b.channel(NioServerSocketChannel.class); b.childHandler(new ChannelInitializer<SocketChannel>() { @Override protected void initChannel(SocketChannel ch) throws Exception { ch.pipeline().addLast(new HttpServerCodec()); ch.pipeline().addLast(new HttpObjectAggregator(65536)); ch.pipeline().addLast(new IdleStateHandler(6000, 3000, 0)); ch.pipeline().addLast(new HttpHandler(NettyConnector.this, dispatcher, callbackDispatcher, getProtocolParser(pt))); } }); b.option(ChannelOption.SO_BACKLOG, 4096); b.childOption(ChannelOption.SO_KEEPALIVE, true); ChannelFuture f; try { f = b.bind(port).sync(); f.channel().closeFuture().sync(); } catch (Exception e) { e.printStackTrace(); } } private void runOneRawSocketServer(int port, Dispatcher dispatcher, ProtocolType pt) { ServerBootstrap b = new ServerBootstrap(); b.group(bossGroup, workerGroup); b.channel(NioServerSocketChannel.class); b.childHandler(new ChannelInitializer<SocketChannel>() { @Override protected void initChannel(SocketChannel ch) throws Exception { ch.pipeline().addLast("decoder", new LengthFieldBasedFrameDecoder(65536, 0, 2, 0, 2)); ch.pipeline().addLast("encoder", new LengthFieldPrepender(2, false)); ch.pipeline().addLast(new IdleStateHandler(6000, 3000, 0)); ch.pipeline().addLast(new RawSocketHandler(NettyConnector.this, dispatcher, callbackDispatcher, getProtocolParser(pt))); } }); b.option(ChannelOption.SO_BACKLOG, 4096); b.childOption(ChannelOption.SO_KEEPALIVE, true); ChannelFuture f; try { f = b.bind(port).sync(); f.channel().closeFuture().sync(); } catch (Exception e) { e.printStackTrace(); } } @Override public List<Endpoint> getEndpoints(String pkg) { if (pkg.equals("*")) { return this.endpoints; } List<Endpoint> points = new ArrayList<Endpoint>(); for (Endpoint ep : this.endpoints) { if (ep.getPkg().startsWith(pkg) || ep.getPkg().equals("*")) { points.add(ep); } } return points; } @Override public Set<Dispatcher> getDispatcheres(String pkg) { Set<Dispatcher> dispatcher = new HashSet<Dispatcher>(); for (Endpoint ep : this.endpoints) { if (ep.getPkg().startsWith(pkg) || ep.getPkg().equals("*") || pkg.equals("*")) { dispatcher.add(ep.getDispatcher()); } } return dispatcher; } @Override public Client createClient(String host, int port, TransportType tt, ProtocolType pt) throws Exception { switch (tt) { case HTTP: return runOneHttpClient(host, port, pt); case SOCKET: return runOneRawSocketClient(host, port, pt); default: break; } return null; } private Client runOneHttpClient(String host, int port, ProtocolType pt) { return new NettyClient(this, host, port, new AbstarctClientChannelInitializer() { @Override protected void initChannel(SocketChannel ch) throws Exception { ChannelPipeline p = ch.pipeline(); p.addLast(new HttpClientCodec()); p.addLast(new HttpObjectAggregator(65536)); URI uri = new URI("http://" + host + ":" + port); p.addLast(new HttpClientHandler(client, NettyConnector.this, getProtocolParser(pt), uri, null)); } }); } private Client runOneRawSocketClient(String host, int port, ProtocolType pt) { return new NettyClient(this, host, port, new AbstarctClientChannelInitializer() { @Override protected void initChannel(SocketChannel ch) throws Exception { ChannelPipeline p = ch.pipeline(); p.addLast("decoder", new LengthFieldBasedFrameDecoder(65536, 0, 2, 0, 2)); p.addLast("encoder", new LengthFieldPrepender(2, false)); p.addLast("handler", new RawSocketClientHandler(client, NettyConnector.this, getProtocolParser(pt))); } }); } @Override public CallbackDispatcher getCallbackDispatcher() { return this.callbackDispatcher; } @Override public void sendMessage(MessageBlock message, MessageCallback callback, int timeout) throws Exception { Callable<MessageBlock> call = new Callable<MessageBlock>() { @Override public MessageBlock call() throws Exception { try { NettyConnector.this.send(message); } catch (Exception e) { message.setBody(null); message.setStatus(500); callbackDispatcher.setReturnValue(message); e.printStackTrace(); } return null; } }; InvocationTask<MessageBlock> task = new InvocationTask<MessageBlock>(call); this.callbackDispatcher.registCallback(message.getSerial(), task, callback, timeout); } public NioEventLoopGroup getBossGroup() { return bossGroup; } public NioEventLoopGroup getWorkerGroup() { return workerGroup; } }