| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package org.apache.ignite.internal.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.UncheckedIOException; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.net.SocketAddress; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| |
| /** |
| * A simple TCP server that echoes back every byte that it receives. Can be used when some protocol-neutral property |
| * of a TCP client (like socket closure handling) needs to be tested. |
| * |
| * This server must be operated (closed, address obtained, etc) from the same thread in which it was started. |
| */ |
| class EchoServer implements AutoCloseable { |
| /***/ |
| private final int port; |
| |
| /***/ |
| private final ExecutorService acceptorExecutor = Executors.newSingleThreadExecutor(); |
| |
| /***/ |
| private final ExecutorService workersExecutor = Executors.newCachedThreadPool(); |
| |
| /***/ |
| private ServerSocket serverSocket; |
| |
| /***/ |
| private volatile boolean running; |
| |
| /***/ |
| EchoServer(int port) { |
| this.port = port; |
| } |
| |
| /***/ |
| public void start() throws IOException { |
| running = true; |
| |
| serverSocket = new ServerSocket(port); |
| |
| acceptorExecutor.submit(new Acceptor()); |
| } |
| |
| /***/ |
| public void stop() throws IOException { |
| assert running : "Not started yet"; |
| |
| running = false; |
| |
| serverSocket.close(); |
| |
| IgniteUtils.shutdownNow(getClass(), acceptorExecutor, null); |
| IgniteUtils.shutdownNow(getClass(), workersExecutor, null); |
| } |
| |
| /***/ |
| public SocketAddress localSocketAddress() { |
| assert serverSocket != null; |
| |
| return serverSocket.getLocalSocketAddress(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void close() throws IOException { |
| stop(); |
| } |
| |
| /***/ |
| private class Acceptor implements Runnable { |
| /** {@inheritDoc} */ |
| @Override public void run() { |
| while (running) { |
| Socket socket = acceptConnection(); |
| workersExecutor.submit(new Worker(socket)); |
| } |
| } |
| |
| /***/ |
| private Socket acceptConnection() { |
| try { |
| return serverSocket.accept(); |
| } |
| catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| } |
| } |
| |
| /***/ |
| private class Worker implements Runnable { |
| /***/ |
| private final Socket socket; |
| |
| /***/ |
| private Worker(Socket socket) { |
| this.socket = socket; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void run() { |
| try (Socket ignored = socket) { |
| InputStream is = socket.getInputStream(); |
| OutputStream os = socket.getOutputStream(); |
| |
| while (running) { |
| int ch = is.read(); |
| if (ch < 0) { |
| break; |
| } |
| os.write(ch); |
| } |
| } |
| catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| } |
| } |
| } |