content: /*
   * 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.activemq.transport.tcp;
  
  import javax.net.SocketFactory;
  import java.io.IOException;
  import java.net.InetAddress;
  import java.net.Socket;
  import java.net.UnknownHostException;
  import java.util.Random;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Automatically generated socket.close() calls to simulate network faults
   */
  public class SocketTstFactory extends SocketFactory {
  
     private static final Logger LOG = LoggerFactory.getLogger(SocketTstFactory.class);
  
     private static final ConcurrentMap<InetAddress, Integer> closeIter = new ConcurrentHashMap<>();
  
     private class SocketTst {
  
        private class Bagot implements Runnable {
  
           private final Thread processus;
           private final Socket socket;
           private final InetAddress address;
  
           public Bagot(Random rnd, Socket socket, InetAddress address) {
              this.processus = new Thread(this, "Network Faults maker : undefined");
              this.socket = socket;
              this.address = address;
           }
  
           public void start() {
              this.processus.setName("Network Faults maker : " + this.socket.toString());
              this.processus.start();
           }
  
           @Override
           public void run() {
              int lastDelayVal;
              Integer lastDelay;
              while (!this.processus.isInterrupted()) {
                 if (!this.socket.isClosed()) {
                    try {
                       lastDelay = closeIter.get(this.address);
                       if (lastDelay == null) {
                          lastDelayVal = 0;
                       } else {
                          lastDelayVal = lastDelay.intValue();
                          if (lastDelayVal > 10)
                             lastDelayVal += 20;
                          else
                             lastDelayVal += 1;
                       }
  
                       lastDelay = Integer.valueOf(lastDelayVal);
  
                       LOG.info("Trying to close client socket " + socket.toString() + " in " + lastDelayVal + " milliseconds");
  
                       try {
                          Thread.sleep(lastDelayVal);
                       } catch (InterruptedException e) {
                          this.processus.interrupt();
                          Thread.currentThread().interrupt();
                       } catch (IllegalArgumentException e) {
                       }
  
                       this.socket.close();
                       closeIter.put(this.address, lastDelay);
                       LOG.info("Client socket " + this.socket.toString() + " is closed.");
                    } catch (IOException e) {
                    }
                 }
  
                 this.processus.interrupt();
              }
           }
        }
  
        private final Bagot bagot;
        private final Socket socket;
  
        public SocketTst(InetAddress address, int port, Random rnd) throws IOException {
           this.socket = new Socket(address, port);
           bagot = new Bagot(rnd, this.socket, address);
        }
  
        public SocketTst(InetAddress address,
                         int port,
                         InetAddress localAddr,
                         int localPort,
                         Random rnd) throws IOException {
           this.socket = new Socket(address, port, localAddr, localPort);
           bagot = new Bagot(rnd, this.socket, address);
        }
  
        public SocketTst(String address, int port, Random rnd) throws UnknownHostException, IOException {
           this.socket = new Socket(address, port);
           bagot = new Bagot(rnd, this.socket, InetAddress.getByName(address));
        }
  
        public SocketTst(String address, int port, InetAddress localAddr, int localPort, Random rnd) throws IOException {
           this.socket = new Socket(address, port, localAddr, localPort);
           bagot = new Bagot(rnd, this.socket, InetAddress.getByName(address));
        }
  
        public Socket getSocket() {
           return this.socket;
        }
  
        public void startBagot() {
           bagot.start();
        }
     }
  
     private final Random rnd;
  
     public SocketTstFactory() {
        super();
        LOG.info("Creating a new SocketTstFactory");
        this.rnd = new Random();
     }
  
     @Override
     public Socket createSocket(InetAddress host, int port) throws IOException {
        SocketTst sockTst;
        sockTst = new SocketTst(host, port, this.rnd);
        sockTst.startBagot();
        return sockTst.getSocket();
     }
  
     @Override
     public Socket createSocket(InetAddress host, int port, InetAddress localAddress, int localPort) throws IOException {
        SocketTst sockTst;
        sockTst = new SocketTst(host, port, localAddress, localPort, this.rnd);
        sockTst.startBagot();
        return sockTst.getSocket();
     }
  
     @Override
     public Socket createSocket(String host, int port) throws IOException {
        SocketTst sockTst;
        sockTst = new SocketTst(host, port, this.rnd);
        sockTst.startBagot();
        return sockTst.getSocket();
     }
  
     @Override
     public Socket createSocket(String host, int port, InetAddress localAddress, int localPort) throws IOException {
        SocketTst sockTst;
        sockTst = new SocketTst(host, port, localAddress, localPort, this.rnd);
        sockTst.startBagot();
        return sockTst.getSocket();
     }
  
     private final static SocketTstFactory client = new SocketTstFactory();
  
     public static SocketFactory getDefault() {
        return client;
     }
  }
  