/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.http.impl.nio.pool;
  
  import java.net.InetSocketAddress;
  import java.net.SocketAddress;
  import java.util.concurrent.Future;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicLong;
  
  import org.apache.http.HttpHost;
  import org.apache.http.annotation.ThreadingBehavior;
  import org.apache.http.annotation.Contract;
  import org.apache.http.concurrent.FutureCallback;
  import org.apache.http.config.ConnectionConfig;
  import org.apache.http.nio.NHttpClientConnection;
  import org.apache.http.nio.pool.AbstractNIOConnPool;
  import org.apache.http.nio.pool.NIOConnFactory;
  import org.apache.http.nio.pool.SocketAddressResolver;
  import org.apache.http.nio.reactor.ConnectingIOReactor;
  import org.apache.http.params.CoreConnectionPNames;
  import org.apache.http.params.HttpParams;
  import org.apache.http.util.Args;
  
  /**
   * A very basic {@link org.apache.http.pool.ConnPool} implementation that
   * represents a pool of non-blocking {@link NHttpClientConnection} connections
   * identified by an {@link HttpHost} instance. Please note this pool
   * implementation does not support complex routes via a proxy cannot
   * differentiate between direct and proxied connections.
   *
   * @see HttpHost
   * @since 4.2
   */
  @SuppressWarnings("deprecation")
  @Contract(threading = ThreadingBehavior.SAFE)
  public class BasicNIOConnPool extends AbstractNIOConnPool<HttpHost, NHttpClientConnection, BasicNIOPoolEntry> {
  
      private static final AtomicLong COUNTER = new AtomicLong();
  
      private final int connectTimeout;
  
      static class BasicAddressResolver implements SocketAddressResolver<HttpHost> {
  
          @Override
          public SocketAddress resolveLocalAddress(final HttpHost host) {
              return null;
          }
  
          @Override
          public SocketAddress resolveRemoteAddress(final HttpHost host) {
              final String hostname = host.getHostName();
              int port = host.getPort();
              if (port == -1) {
                  if (host.getSchemeName().equalsIgnoreCase("http")) {
                      port = 80;
                  } else if (host.getSchemeName().equalsIgnoreCase("https")) {
                      port = 443;
                  }
              }
              return new InetSocketAddress(hostname, port);
          }
  
      }
  
      /**
       * @deprecated (4.3) use {@link BasicNIOConnPool#BasicNIOConnPool(ConnectingIOReactor, NIOConnFactory, int)}
       */
      @Deprecated
      public BasicNIOConnPool(
              final ConnectingIOReactor ioReactor,
              final NIOConnFactory<HttpHost, NHttpClientConnection> connFactory,
              final HttpParams params) {
          super(ioReactor, connFactory, 2, 20);
          Args.notNull(params, "HTTP parameters");
         this.connectTimeout = params.getIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 0);
     }
 
     /**
      * @deprecated (4.3) use {@link BasicNIOConnPool#BasicNIOConnPool(ConnectingIOReactor,
      *   ConnectionConfig)}
      */
     @Deprecated
     public BasicNIOConnPool(
             final ConnectingIOReactor ioReactor, final HttpParams params) {
         this(ioReactor, new BasicNIOConnFactory(params), params);
     }
 
     /**
      * @since 4.3
      */
     public BasicNIOConnPool(
             final ConnectingIOReactor ioReactor,
             final NIOConnFactory<HttpHost, NHttpClientConnection> connFactory,
             final int connectTimeout) {
         super(ioReactor, connFactory, new BasicAddressResolver(), 2, 20);
         this.connectTimeout = connectTimeout;
     }
 
     /**
      * @since 4.3
      */
     public BasicNIOConnPool(
             final ConnectingIOReactor ioReactor,
             final int connectTimeout,
             final ConnectionConfig config) {
         this(ioReactor, new BasicNIOConnFactory(config), connectTimeout);
     }
 
     /**
      * @since 4.3
      */
     public BasicNIOConnPool(
             final ConnectingIOReactor ioReactor,
             final ConnectionConfig config) {
         this(ioReactor, new BasicNIOConnFactory(config), 0);
     }
 
     /**
      * @since 4.3
      */
     public BasicNIOConnPool(final ConnectingIOReactor ioReactor) {
         this(ioReactor, new BasicNIOConnFactory(ConnectionConfig.DEFAULT), 0);
     }
 
     /**
      * @deprecated (4.3) use {@link SocketAddressResolver}
      */
     @Deprecated
     @Override
     protected SocketAddress resolveRemoteAddress(final HttpHost host) {
         return new InetSocketAddress(host.getHostName(), host.getPort());
     }
 
     /**
      * @deprecated (4.3) use {@link SocketAddressResolver}
      */
     @Deprecated
     @Override
     protected SocketAddress resolveLocalAddress(final HttpHost host) {
         return null;
     }
 
     @Override
     protected BasicNIOPoolEntry createEntry(final HttpHost host, final NHttpClientConnection conn) {
         final BasicNIOPoolEntrysicNIOPoolEntry.html#BasicNIOPoolEntry">BasicNIOPoolEntry entry = new BasicNIOPoolEntry(
                 Long.toString(COUNTER.getAndIncrement()), host, conn);
         entry.setSocketTimeout(conn.getSocketTimeout());
         return entry;
     }
 
     @Override
     public Future<BasicNIOPoolEntry> lease(
             final HttpHost route,
             final Object state,
             final FutureCallback<BasicNIOPoolEntry> callback) {
         return super.lease(route, state,
                 this.connectTimeout, TimeUnit.MILLISECONDS, callback);
     }
 
     @Override
     public Future<BasicNIOPoolEntry> lease(
             final HttpHost route,
             final Object state) {
         return super.lease(route, state,
                 this.connectTimeout, TimeUnit.MILLISECONDS, null);
     }
 
     @Override
     protected void onLease(final BasicNIOPoolEntry entry) {
         final NHttpClientConnection conn = entry.getConnection();
         conn.setSocketTimeout(entry.getSocketTimeout());
     }
 
     @Override
     protected void onRelease(final BasicNIOPoolEntry entry) {
         final NHttpClientConnection conn = entry.getConnection();
         entry.setSocketTimeout(conn.getSocketTimeout());
         conn.setSocketTimeout(0);
     }
 
 }