/**
 * 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.ServerSocketFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.util.Random;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 */
public class ServerSocketTstFactory extends ServerSocketFactory {

   private static final Logger LOG = LoggerFactory.getLogger(ServerSocketTstFactory.class);

   private class ServerSocketTst {

      private final ServerSocket socket;

      public ServerSocketTst(int port, Random rnd) throws IOException {
         this.socket = ServerSocketFactory.getDefault().createServerSocket(port);
      }

      public ServerSocketTst(int port, int backlog, Random rnd) throws IOException {
         this.socket = ServerSocketFactory.getDefault().createServerSocket(port, backlog);
      }

      public ServerSocketTst(int port, int backlog, InetAddress bindAddr, Random rnd) throws IOException {
         this.socket = ServerSocketFactory.getDefault().createServerSocket(port, backlog, bindAddr);
      }

      public ServerSocket getSocket() {
         return this.socket;
      }
   }

   private final Random rnd;

   public ServerSocketTstFactory() {
      super();
      LOG.info("Creating a new ServerSocketTstFactory");
      this.rnd = new Random();
   }

   @Override
   public ServerSocket createServerSocket(int port) throws IOException {
      ServerSocketTst sSock = new ServerSocketTst(port, this.rnd);
      return sSock.getSocket();
   }

   @Override
   public ServerSocket createServerSocket(int port, int backlog) throws IOException {
      ServerSocketTst sSock = new ServerSocketTst(port, backlog, this.rnd);
      return sSock.getSocket();
   }

   @Override
   public ServerSocket createServerSocket(int port, int backlog, InetAddress ifAddress) throws IOException {
      ServerSocketTst sSock = new ServerSocketTst(port, backlog, ifAddress, this.rnd);
      return sSock.getSocket();
   }

   private final static ServerSocketTstFactory server = new ServerSocketTstFactory();

   public static ServerSocketTstFactory getDefault() {
      return server;
   }
}
