MINA框架中原生态心跳支持

/** * @Title: HeartBeatTestServer.java * @Package com.underdark.March * @Description: TODO(用一句话描述该文件做什么) * @author Minsc Wang ys2b7_hotmail_com * @date 2010-3-14 下午02:49:14 * @version V0.9.0 */ package com.underdark.March; import java.io.IOException; import java.net.InetSocketAddress; import java.util.concurrent.ExecutorService; import org.apache.mina.core.service.IoHandler; import org.apache.mina.core.session.IdleStatus; import org.apache.mina.core.session.IoSession; import org.apache.mina.filter.codec.ProtocolCodecFilter; import org.apache.mina.filter.codec.textline.TextLineCodecFactory; import org.apache.mina.filter.executor.ExecutorFilter; import org.apache.mina.filter.executor.OrderedThreadPoolExecutor; import org.apache.mina.filter.keepalive.KeepAliveFilter; import org.apache.mina.filter.keepalive.KeepAliveMessageFactory; import org.apache.mina.filter.keepalive.KeepAliveRequestTimeoutHandler; import org.apache.mina.transport.socket.SocketAcceptor; import org.apache.mina.transport.socket.SocketSessionConfig; import org.apache.mina.transport.socket.nio.NioSocketAcceptor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * @ClassName: HeartBeatTestServer * @Description: MINA心跳测试服务器,仅供测试 * @author Minsc Wang ys2b7_hotmail_com * @date 2011-3-7 下午02:49:14 * */ public class HeartBeatTestServer { private static final Logger LOG = LoggerFactory .getLogger(HeartBeatTestServer.class); private static final int PORT = 8889; /** 30秒后超时 */ private static final int IDELTIMEOUT = 30; /** 15秒发送一次心跳包 */ private static final int HEARTBEATRATE = 15; /** 心跳包内容 */ private static final String HEARTBEATREQUEST = "HEARTBEATREQUEST"; private static final String HEARTBEATRESPONSE = "HEARTBEATRESPONSE"; private static SocketAcceptor acceptor; private static ExecutorService filterExecutor = new OrderedThreadPoolExecutor(); private static IoHandler handler = new HeartBeatServerHandler(); public static void main(String[] args) throws IOException { acceptor = new NioSocketAcceptor(Runtime.getRuntime() .availableProcessors()); acceptor.setReuseAddress(true); acceptor.getSessionConfig().setReadBufferSize(1024); acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, IDELTIMEOUT); // Decrease the default receiver buffer size ((SocketSessionConfig) acceptor.getSessionConfig()) .setReceiveBufferSize(1024); acceptor.getFilterChain().addLast("threadPool", new ExecutorFilter(filterExecutor)); acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory())); /** 主角登场 */ KeepAliveMessageFactory heartBeatFactory = new KeepAliveMessageFactoryImpl(); KeepAliveRequestTimeoutHandler heartBeatHandler = new KeepAliveRequestTimeoutHandlerImpl(); KeepAliveFilter heartBeat = new KeepAliveFilter(heartBeatFactory, IdleStatus.BOTH_IDLE, heartBeatHandler); /** 是否回发 */ heartBeat.setForwardEvent(true); /** 发送频率 */ heartBeat.setRequestInterval(HEARTBEATRATE); acceptor.getFilterChain().addLast("heartbeat", heartBeat); /** *********************** */ acceptor.setHandler(handler); acceptor.bind(new InetSocketAddress(PORT)); LOG.info("服务器开启，监听端口：" + PORT); } /*** * @ClassName: KeepAliveMessageFactoryImpl * @Description: 内部类，实现心跳工厂 * @author Minsc Wang ys2b7_hotmail_com * @date 2011-3-7 下午04:09:02 * */ private static class KeepAliveMessageFactoryImpl implements KeepAliveMessageFactory { /* * (non-Javadoc) * * @see * org.apache.mina.filter.keepalive.KeepAliveMessageFactory#getRequest * (org.apache.mina.core.session.IoSession) */ @Override public Object getRequest(IoSession session) { return null; } /* * (non-Javadoc) * * @see * org.apache.mina.filter.keepalive.KeepAliveMessageFactory#getResponse * (org.apache.mina.core.session.IoSession, java.lang.Object) */ @Override public Object getResponse(IoSession session, Object request) { LOG.info("返回预设语句" + HEARTBEATRESPONSE); /** 返回预设语句 */ return HEARTBEATRESPONSE; } /* * (non-Javadoc) * * @see * org.apache.mina.filter.keepalive.KeepAliveMessageFactory#isRequest * (org.apache.mina.core.session.IoSession, java.lang.Object) */ @Override public boolean isRequest(IoSession session, Object message) { LOG.info("是否是心跳包: " + message); if(message.equals(HEARTBEATREQUEST)) return true; return false; } /* * (non-Javadoc) * * @see * org.apache.mina.filter.keepalive.KeepAliveMessageFactory#isResponse * (org.apache.mina.core.session.IoSession, java.lang.Object) */ @Override public boolean isResponse(IoSession session, Object message) { LOG.info("是否是心跳包: " + message); if(message.equals(HEARTBEATRESPONSE)) return true; return false; } } /*** * @ClassName: KeepAliveRequestTimeoutHandlerImpl * @Description: 当心跳超时时的处理，也可以用默认处理 这里like * KeepAliveRequestTimeoutHandler.LOG的处理 * @author Minsc Wang ys2b7_hotmail_com * @date 2011-3-7 下午04:15:39 * */ private static class KeepAliveRequestTimeoutHandlerImpl implements KeepAliveRequestTimeoutHandler { /* * (non-Javadoc) * * @seeorg.apache.mina.filter.keepalive.KeepAliveRequestTimeoutHandler# * keepAliveRequestTimedOut * (org.apache.mina.filter.keepalive.KeepAliveFilter, * org.apache.mina.core.session.IoSession) */ @Override public void keepAliveRequestTimedOut(KeepAliveFilter filter, IoSession session) throws Exception { ((Logger) LOG).info("心跳超时！"); } } }