com.alibaba.dubbo.remoting.exchange.Exchangers Java Examples

private ExchangeServer createServer(URL url) {
    //默认开启server关闭时发送readonly事件
    url = url.addParameterIfAbsent(Constants.CHANNEL_READONLYEVENT_SENT_KEY, Boolean.TRUE.toString());
    //默认开启heartbeat
    url = url.addParameterIfAbsent(Constants.HEARTBEAT_KEY, String.valueOf(Constants.DEFAULT_HEARTBEAT));
    String str = url.getParameter(Constants.SERVER_KEY, Constants.DEFAULT_REMOTING_SERVER);

    if (str != null && str.length() > 0 && ! ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str))
        throw new RpcException("Unsupported server type: " + str + ", url: " + url);

    url = url.addParameter(Constants.CODEC_KEY, Version.isCompatibleVersion() ? COMPATIBLE_CODEC_NAME : DubboCodec.NAME);
    ExchangeServer server;
    try {
        server = Exchangers.bind(url, requestHandler);
    } catch (RemotingException e) {
        throw new RpcException("Fail to start server(url: " + url + ") " + e.getMessage(), e);
    }
    str = url.getParameter(Constants.CLIENT_KEY);
    if (str != null && str.length() > 0) {
        Set<String> supportedTypes = ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions();
        if (!supportedTypes.contains(str)) {
            throw new RpcException("Unsupported client type: " + str);
        }
    }
    return server;
}
 

private ExchangeServer getServer(URL url) {
    // enable sending readonly event when server closes by default
    url = url.addParameterIfAbsent(Constants.CHANNEL_READONLYEVENT_SENT_KEY, Boolean.TRUE.toString());
    String str = url.getParameter(Constants.SERVER_KEY, Constants.DEFAULT_REMOTING_SERVER);

    if (str != null && str.length() > 0 && !ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str))
        throw new RpcException("Unsupported server type: " + str + ", url: " + url);

    ExchangeServer server;
    try {
        server = Exchangers.bind(url, handler);
    } catch (RemotingException e) {
        throw new RpcException("Fail to start server(url: " + url + ") " + e.getMessage(), e);
    }
    str = url.getParameter(Constants.CLIENT_KEY);
    if (str != null && str.length() > 0) {
        Set<String> supportedTypes = ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions();
        if (!supportedTypes.contains(str)) {
            throw new RpcException("Unsupported client type: " + str);
        }
    }
    return server;
}
 

private ExchangeServer createServer(URL url) {
    //默认开启server关闭时发送readonly事件
    url = url.addParameterIfAbsent(Constants.CHANNEL_READONLYEVENT_SENT_KEY, Boolean.TRUE.toString());
    //默认开启heartbeat
    url = url.addParameterIfAbsent(Constants.HEARTBEAT_KEY, String.valueOf(Constants.DEFAULT_HEARTBEAT));
    String str = url.getParameter(Constants.SERVER_KEY, Constants.DEFAULT_REMOTING_SERVER);

    if (str != null && str.length() > 0 && ! ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str))
        throw new RpcException("Unsupported server type: " + str + ", url: " + url);

    url = url.addParameter(Constants.CODEC_KEY, Version.isCompatibleVersion() ? COMPATIBLE_CODEC_NAME : DubboCodec.NAME);
    ExchangeServer server;
    try {
        server = Exchangers.bind(url, requestHandler);
    } catch (RemotingException e) {
        throw new RpcException("Fail to start server(url: " + url + ") " + e.getMessage(), e);
    }
    str = url.getParameter(Constants.CLIENT_KEY);
    if (str != null && str.length() > 0) {
        Set<String> supportedTypes = ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions();
        if (!supportedTypes.contains(str)) {
            throw new RpcException("Unsupported client type: " + str);
        }
    }
    return server;
}
 

/**
 * 重连日志的校验
 */
@Test
public void testReconnectWaringLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.4:"+port + "/client.reconnect.test?check=false&"
    +Constants.RECONNECT_KEY+"="+1 //1ms reconnect,保证有足够频率的重连
    +"&"+Constants.SHUTDOWN_TIMEOUT_KEY+ "=1"//shutdown时间足够短，确保error日志输出
    +"&reconnect.waring.period=100";//每隔多少warning记录一次
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    int count =  0;
    for (int i=0;i<100;i++){
        count =  LogUtil.findMessage(Level.WARN, "client reconnect to ") ; 
        if (count >=1){
            break;
        }
        Thread.sleep(50);//重连线程的运行
    }
    Assert.assertTrue("warning message count must >= 1, real :"+count, count>= 1);
    DubboAppender.doStop();
}
 

/**
 * 重连日志的校验，时间不够shutdown time时，不能有error日志，但必须有一条warn日志
 */
@Test
public void testReconnectWarnLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.2:"+port + "/client.reconnect.test?check=false&"
    +Constants.RECONNECT_KEY+"="+1 ; //1ms reconnect,保证有足够频率的重连
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    Thread.sleep(1500);//重连线程的运行
    //时间不够长，不会产生error日志
    Assert.assertEquals("no error message ", 0 , LogUtil.findMessage(Level.ERROR, "client reconnect to "));
    //第一次重连失败就会有warn日志
    Assert.assertEquals("must have one warn message ", 1 , LogUtil.findMessage(Level.WARN, "client reconnect to "));
    DubboAppender.doStop();
}
 

/**
 * 重连日志的校验，不能一直抛出error日志.
 */
@Test
public void testReconnectErrorLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.3:"+port + "/client.reconnect.test?check=false&"
    +Constants.RECONNECT_KEY+"="+1 + //1ms reconnect,保证有足够频率的重连
    "&"+Constants.SHUTDOWN_TIMEOUT_KEY+ "=1";//shutdown时间足够短，确保error日志输出
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    Thread.sleep(1500);//重连线程的运行
    Assert.assertEquals("only one error message ", 1 , LogUtil.findMessage(Level.ERROR, "client reconnect to "));
    DubboAppender.doStop();
}
 

private ExchangeServer getServer(URL url) {
    //默认开启server关闭时发送readonly事件
    url = url.addParameterIfAbsent(Constants.CHANNEL_READONLYEVENT_SENT_KEY, Boolean.TRUE.toString());
    String str = url.getParameter(Constants.SERVER_KEY, Constants.DEFAULT_REMOTING_SERVER);

    if (str != null && str.length() > 0 && ! ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str))
        throw new RpcException("Unsupported server type: " + str + ", url: " + url);

    ExchangeServer server;
    try {
        server = Exchangers.bind(url, handler);
    } catch (RemotingException e) {
        throw new RpcException("Fail to start server(url: " + url + ") " + e.getMessage(), e);
    }
    str = url.getParameter(Constants.CLIENT_KEY);
    if (str != null && str.length() > 0) {
        Set<String> supportedTypes = ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions();
        if (!supportedTypes.contains(str)) {
            throw new RpcException("Unsupported client type: " + str);
        }
    }
    return server;
}
 

/**
   * 测试client重连方法不会导致重连线程失效.
   */
  @Test
  public void testClientReconnectMethod() throws RemotingException, InterruptedException{
      int port = NetUtils.getAvailablePort();
      String url = "exchange://127.0.0.3:"+port + "/client.reconnect.test?check=false&"
      +Constants.RECONNECT_KEY+"="+10 //1ms reconnect,保证有足够频率的重连
      +"&reconnect.waring.period=1";
      DubboAppender.doStart();
      Client client = Exchangers.connect(url);
      try {
	client.reconnect();
} catch (Exception e) {
	//do nothing
}
      Thread.sleep(1500);//重连线程的运行
      Assert.assertTrue("have more then one warn msgs . bug was :" + LogUtil.findMessage(Level.WARN, "client reconnect to "),LogUtil.findMessage(Level.WARN, "client reconnect to ") >1);
      DubboAppender.doStop();
  }
 

private ExchangeServer getServer(URL url) {
    //默认开启server关闭时发送readonly事件
    url = url.addParameterIfAbsent(Constants.CHANNEL_READONLYEVENT_SENT_KEY, Boolean.TRUE.toString());
    String str = url.getParameter(Constants.SERVER_KEY, Constants.DEFAULT_REMOTING_SERVER);

    if (str != null && str.length() > 0 && ! ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str))
        throw new RpcException("Unsupported server type: " + str + ", url: " + url);

    ExchangeServer server;
    try {
        server = Exchangers.bind(url, handler);
    } catch (RemotingException e) {
        throw new RpcException("Fail to start server(url: " + url + ") " + e.getMessage(), e);
    }
    str = url.getParameter(Constants.CLIENT_KEY);
    if (str != null && str.length() > 0) {
        Set<String> supportedTypes = ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions();
        if (!supportedTypes.contains(str)) {
            throw new RpcException("Unsupported client type: " + str);
        }
    }
    return server;
}
 

/**
 * 重连日志的校验
 */
@Test
public void testReconnectWaringLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.4:"+port + "/client.reconnect.test?check=false&"
    +Constants.RECONNECT_KEY+"="+1 //1ms reconnect,保证有足够频率的重连
    +"&"+Constants.SHUTDOWN_TIMEOUT_KEY+ "=1"//shutdown时间足够短，确保error日志输出
    +"&reconnect.waring.period=100";//每隔多少warning记录一次
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    int count =  0;
    for (int i=0;i<100;i++){
        count =  LogUtil.findMessage(Level.WARN, "client reconnect to ") ; 
        if (count >=1){
            break;
        }
        Thread.sleep(50);//重连线程的运行
    }
    Assert.assertTrue("warning message count must >= 1, real :"+count, count>= 1);
    DubboAppender.doStop();
}
 

/**
   * 测试client重连方法不会导致重连线程失效.
   */
  @Test
  public void testClientReconnectMethod() throws RemotingException, InterruptedException{
      int port = NetUtils.getAvailablePort();
      String url = "exchange://127.0.0.3:"+port + "/client.reconnect.test?check=false&"
      +Constants.RECONNECT_KEY+"="+10 //1ms reconnect,保证有足够频率的重连
      +"&reconnect.waring.period=1";
      DubboAppender.doStart();
      Client client = Exchangers.connect(url);
      try {
	client.reconnect();
} catch (Exception e) {
	//do nothing
}
      Thread.sleep(1500);//重连线程的运行
      Assert.assertTrue("have more then one warn msgs . bug was :" + LogUtil.findMessage(Level.WARN, "client reconnect to "),LogUtil.findMessage(Level.WARN, "client reconnect to ") >1);
      DubboAppender.doStop();
  }
 

/**
 * Reconnect log check, when the time is not enough for shutdown time, there is no error log, but there must be a warn log
 */
@Test
public void testReconnectWarnLog() throws RemotingException, InterruptedException {
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.2:" + port + "/client.reconnect.test?check=false&"
            + Constants.RECONNECT_KEY + "=" + 1; //1ms reconnect, ensure that there is enough frequency to reconnect
    try {
        Exchangers.connect(url);
    } catch (Exception e) {

        //do nothing
    }
    Thread.sleep(1500);
    //Time is not long enough to produce a error log
    Assert.assertEquals("no error message ", 0, LogUtil.findMessage(Level.ERROR, "client reconnect to "));
    //The first reconnection failed to have a warn log
    Assert.assertEquals("must have one warn message ", 1, LogUtil.findMessage(Level.WARN, "client reconnect to "));
    DubboAppender.doStop();
}
 

/**
 * 重连日志的校验
 */
public void testReconnectWaringLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.4:"+port + "/client.reconnect.test?transporter=netty4&check=false&"
    +Constants.RECONNECT_KEY+"="+100
    +"&"+Constants.SHUTDOWN_TIMEOUT_KEY+ "=1"//shutdown时间足够短，确保error日志输出
    +"&reconnect.waring.period=500";//每隔多少warning记录一次
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    int count =  0;
    for (int i=0;i<10;i++){
        count =  LogUtil.findMessage(Level.WARN, "client reconnect to ") ; 
        if (count >=1){
            break;
        }
        Thread.sleep(50);//重连线程的运行
    }
    Assert.assertTrue("warning message count must >= 1, real :"+count, count>= 1);
    DubboAppender.doStop();
}
 

private static void test(int port) throws Exception
{
    ExchangeChannel client = Exchangers.connect(URL.valueOf("dubbo://localhost:" + port));
	MockResult result = (MockResult)client.request(new RpcMessage(DemoService.class.getName(),"plus",new Class<?>[]{int.class, int.class},new Object[]{55,25})).get();
	System.out.println("55+25="+result.getResult());

	for(int i=0;i<100;i++)
		client.request(new RpcMessage(DemoService.class.getName(),"sayHello", new Class<?>[]{String.class},new Object[]{"qianlei"+i}));

	for(int i=0;i<100;i++)
		client.request(new Main.Data());

	System.out.println("=====test invoke=====");
	for(int i=0;i<100;i++){
		ResponseFuture future = client.request(new Main.Data());
		System.out.println("invoke and get");
		System.out.println("invoke result:" + future.get());
	}
	System.out.println("=====the end=====");
}
 

private static void test(int port) throws Exception {
    ExchangeChannel client = Exchangers.connect(URL.valueOf("dubbo://localhost:" + port));
    MockResult result = (MockResult) client.request(new RpcMessage(DemoService.class.getName(), "plus", new Class<?>[]{int.class, int.class}, new Object[]{55, 25})).get();
    System.out.println("55+25=" + result.getResult());

    for (int i = 0; i < 100; i++)
        client.request(new RpcMessage(DemoService.class.getName(), "sayHello", new Class<?>[]{String.class}, new Object[]{"qianlei" + i}));

    for (int i = 0; i < 100; i++)
        client.request(new Main.Data());

    System.out.println("=====test invoke=====");
    for (int i = 0; i < 100; i++) {
        ResponseFuture future = client.request(new Main.Data());
        System.out.println("invoke and get");
        System.out.println("invoke result:" + future.get());
    }
    System.out.println("=====the end=====");
}
 

/**
 * 重连日志的校验，时间不够shutdown time时，不能有error日志，但必须有一条warn日志
 */
@Test
public void testReconnectWarnLog() throws RemotingException, InterruptedException{
    int port = NetUtils.getAvailablePort();
    DubboAppender.doStart();
    String url = "exchange://127.0.0.2:"+port + "/client.reconnect.test?check=false&"
    +Constants.RECONNECT_KEY+"="+1 ; //1ms reconnect,保证有足够频率的重连
    try{
        Exchangers.connect(url);
    }catch (Exception e) {
        //do nothing
    }
    Thread.sleep(1500);//重连线程的运行
    //时间不够长，不会产生error日志
    Assert.assertEquals("no error message ", 0 , LogUtil.findMessage(Level.ERROR, "client reconnect to "));
    //第一次重连失败就会有warn日志
    Assert.assertEquals("must have one warn message ", 1 , LogUtil.findMessage(Level.WARN, "client reconnect to "));
    DubboAppender.doStop();
}
 

private static void test(int port) throws Exception
{
    ExchangeChannel client = Exchangers.connect(URL.valueOf("dubbo://localhost:" + port));
	MockResult result = (MockResult)client.request(new RpcMessage(DemoService.class.getName(),"plus",new Class<?>[]{int.class, int.class},new Object[]{55,25})).get();
	System.out.println("55+25="+result.getResult());

	for(int i=0;i<100;i++)
		client.request(new RpcMessage(DemoService.class.getName(),"sayHello", new Class<?>[]{String.class},new Object[]{"qianlei"+i}));

	for(int i=0;i<100;i++)
		client.request(new Main.Data());

	System.out.println("=====test invoke=====");
	for(int i=0;i<100;i++){
		ResponseFuture future = client.request(new Main.Data());
		System.out.println("invoke and get");
		System.out.println("invoke result:" + future.get());
	}
	System.out.println("=====the end=====");
}
 

public ExchangePeer join(URL url, ExchangeHandler handler) throws RemotingException {
    ExchangeServer server = servers.get(url);
    if (server == null) { // TODO 有并发间隙
        server = Exchangers.bind(url, handler);
        servers.put(url, server);
        dispatcher.addChannelHandler(handler);
    }
    return new ExchangeServerPeer(server, clients, this);
}
 

@BeforeClass
public static void setUp() throws Exception {
    //int port = (int) (1000 * Math.random() + 10000);
    int port = 10001;
    System.out.println(port);
    server = Exchangers.bind(URL.valueOf("telnet://0.0.0.0:" + port + "?server=netty4"), new TelnetServerHandler());
    client = Exchangers.connect(URL.valueOf("telnet://127.0.0.1:" + port + "?client=netty4"), new TelnetClientHandler());
}
 

protected Client connect(URL url) throws RemotingException {
    if (servers.containsKey(url)) {
        return null;
    }
    ExchangeClient client = clients.get(url);
    if (client == null) { // TODO 有并发间隙
        client = Exchangers.connect(url, dispatcher);
        clients.put(url, client);
    }
    return client;
}
 

@Test
public void testServerClose() throws Exception {
    for (int i = 0; i < 100; i++) {
        Server aServer = Exchangers.bind(URL.valueOf("exchange://localhost:" + (5000 + i) + "?client=netty"), new TelnetServerHandler());
        aServer.close();
    }
}
 

@Test
public void testServerClose() throws Exception {
    for (int i = 0; i < 100; i++) {
        Server aServer = Exchangers.bind(URL.valueOf("exchange://localhost:" + (5000 + i) + "?client=netty"), new TelnetServerHandler());
        aServer.close();
    }
}
 

@Test
public void testServerHeartbeat() throws Exception {
    URL serverURL = URL.valueOf("header://localhost:55555");
    serverURL = serverURL.addParameter(Constants.HEARTBEAT_KEY, 1000);
    TestHeartbeatHandler handler = new TestHeartbeatHandler();
    server = Exchangers.bind(serverURL, handler);
    System.out.println("Server bind successfully");

    FakeChannelHandlers.setTestingChannelHandlers();
    serverURL = serverURL.removeParameter(Constants.HEARTBEAT_KEY);
    client = Exchangers.connect(serverURL);
    Thread.sleep(10000);
    Assert.assertTrue(handler.disconnectCount > 0);
    System.out.println("disconnect count " + handler.disconnectCount);
}
 

@Test
public void testClientHeartbeat() throws Exception {
    FakeChannelHandlers.setTestingChannelHandlers();
    URL serverURL = URL.valueOf("header://localhost:55555");
    TestHeartbeatHandler handler = new TestHeartbeatHandler();
    server = Exchangers.bind(serverURL, handler);
    System.out.println("Server bind successfully");

    FakeChannelHandlers.resetChannelHandlers();
    serverURL = serverURL.addParameter(Constants.HEARTBEAT_KEY, 1000);
    client = Exchangers.connect(serverURL);
    Thread.sleep(10000);
    Assert.assertTrue(handler.connectCount > 0);
    System.out.println("connect count " + handler.connectCount);
}
 

protected ExchangeClient createClient(String targetIP, int targetPort, int connectTimeout) throws Exception {
    StringBuilder url = new StringBuilder();
    url.append("exchange://");
    url.append(targetIP);
    url.append(":");
    url.append(targetPort);
    url.append("?");
    url.append("timeout=");
    url.append(connectTimeout);
    return Exchangers.connect(url.toString());
}
 

public ExchangePeer join(URL url, ExchangeHandler handler) throws RemotingException {
    ExchangeServer server = servers.get(url);
    if (server == null) { // TODO 有并发间隙
        server = Exchangers.bind(url, handler);
        servers.put(url, server);
        dispatcher.addChannelHandler(handler);
    }
    return new ExchangeServerPeer(server, clients, this);
}
 

@Test
public void testServerClose() throws Exception {
    for (int i = 0; i < 100; i++) {
        Server aServer = Exchangers.bind(URL.valueOf("exchange://localhost:" + (5000 + i) + "?transporter=netty4"), new TelnetServerHandler());
        aServer.close();
    }
}
 

public static  ExchangeClient initClient(String url){
    // 创建客户端
    ExchangeClient exchangeClient  = null;
    PeformanceTestHandler handler = new PeformanceTestHandler(url);
    boolean run = true;
    while(run){
        try{
            exchangeClient= Exchangers.connect(url,handler);
        } catch (Throwable t){
            
            if(t!=null && t.getCause()!=null && t.getCause().getClass()!=null && (t.getCause().getClass()==java.net.ConnectException.class 
                    || t.getCause().getClass()== java.net.ConnectException.class)){
                
            }else {
                t.printStackTrace();
            }
            
            try {
                Thread.sleep(50);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        if (exchangeClient != null) {
            run = false;
        }
    }
    return exchangeClient;
}
 

@Test
public void testClientHeartbeat() throws Exception {
    FakeChannelHandlers.setTestingChannelHandlers();
    URL serverURL = URL.valueOf("header://localhost:55555?transporter=netty4");
    TestHeartbeatHandler handler = new TestHeartbeatHandler();
    server = Exchangers.bind(serverURL, handler);
    System.out.println("Server bind successfully");

    FakeChannelHandlers.resetChannelHandlers();
    serverURL = serverURL.addParameter(Constants.HEARTBEAT_KEY, 1000);
    client = Exchangers.connect(serverURL);
    Thread.sleep(10000);
    Assert.assertTrue(handler.connectCount > 0);
    System.out.println("connect count " + handler.connectCount);
}
 

@Test
public void testHeartbeat() throws Exception {
    URL serverURL = URL.valueOf("header://localhost:55555?transporter=netty4");
    serverURL = serverURL.addParameter(Constants.HEARTBEAT_KEY, 1000);
    TestHeartbeatHandler handler = new TestHeartbeatHandler();
    server = Exchangers.bind(serverURL, handler);
    System.out.println("Server bind successfully");

    client = Exchangers.connect(serverURL);
    Thread.sleep(10000);
    System.err.println("++++++++++++++ disconnect count " + handler.disconnectCount);
    System.err.println("++++++++++++++ connect count " + handler.connectCount);
    Assert.assertTrue(handler.disconnectCount == 0);
    Assert.assertTrue(handler.connectCount == 1);
}