| /* |
| * 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.kafka.common.network; |
| |
| import org.apache.kafka.common.security.auth.SecurityProtocol; |
| import org.apache.kafka.common.security.ssl.SslFactory; |
| |
| import javax.net.ssl.SSLContext; |
| import javax.net.ssl.SSLSocket; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| |
| /** |
| * A simple server that takes size delimited byte arrays and just echos them back to the sender. |
| */ |
| class EchoServer extends Thread { |
| public final int port; |
| private final ServerSocket serverSocket; |
| private final List<Thread> threads; |
| private final List<Socket> sockets; |
| private volatile boolean closing = false; |
| private final SslFactory sslFactory; |
| private final AtomicBoolean renegotiate = new AtomicBoolean(); |
| |
| public EchoServer(SecurityProtocol securityProtocol, Map<String, ?> configs) throws Exception { |
| switch (securityProtocol) { |
| case SSL: |
| this.sslFactory = new SslFactory(Mode.SERVER); |
| this.sslFactory.configure(configs); |
| SSLContext sslContext = this.sslFactory.sslEngineBuilder().sslContext(); |
| this.serverSocket = sslContext.getServerSocketFactory().createServerSocket(0); |
| break; |
| case PLAINTEXT: |
| this.serverSocket = new ServerSocket(0); |
| this.sslFactory = null; |
| break; |
| default: |
| throw new IllegalArgumentException("Unsupported securityProtocol " + securityProtocol); |
| } |
| this.port = this.serverSocket.getLocalPort(); |
| this.threads = Collections.synchronizedList(new ArrayList<Thread>()); |
| this.sockets = Collections.synchronizedList(new ArrayList<Socket>()); |
| } |
| |
| public void renegotiate() { |
| renegotiate.set(true); |
| } |
| |
| @Override |
| public void run() { |
| try { |
| while (!closing) { |
| final Socket socket = serverSocket.accept(); |
| synchronized (sockets) { |
| if (closing) { |
| break; |
| } |
| sockets.add(socket); |
| Thread thread = new Thread() { |
| @Override |
| public void run() { |
| try { |
| DataInputStream input = new DataInputStream(socket.getInputStream()); |
| DataOutputStream output = new DataOutputStream(socket.getOutputStream()); |
| while (socket.isConnected() && !socket.isClosed()) { |
| int size = input.readInt(); |
| if (renegotiate.get()) { |
| renegotiate.set(false); |
| ((SSLSocket) socket).startHandshake(); |
| } |
| byte[] bytes = new byte[size]; |
| input.readFully(bytes); |
| output.writeInt(size); |
| output.write(bytes); |
| output.flush(); |
| } |
| } catch (IOException e) { |
| // ignore |
| } finally { |
| try { |
| socket.close(); |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| } |
| }; |
| thread.start(); |
| threads.add(thread); |
| } |
| } |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| |
| public void closeConnections() throws IOException { |
| synchronized (sockets) { |
| for (Socket socket : sockets) |
| socket.close(); |
| } |
| } |
| |
| public void close() throws IOException, InterruptedException { |
| closing = true; |
| this.serverSocket.close(); |
| closeConnections(); |
| for (Thread t : threads) |
| t.join(); |
| join(); |
| } |
| } |