/*
    * ====================================================================
    * 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.conn;
  
  import java.io.IOException;
  import java.io.InterruptedIOException;
  import java.net.Socket;
  import java.nio.charset.CharsetDecoder;
  import java.nio.charset.CharsetEncoder;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import javax.net.ssl.SSLSession;
  import javax.net.ssl.SSLSocket;
  
  import org.apache.http.HttpRequest;
  import org.apache.http.HttpResponse;
  import org.apache.http.config.MessageConstraints;
  import org.apache.http.conn.ManagedHttpClientConnection;
  import org.apache.http.entity.ContentLengthStrategy;
  import org.apache.http.impl.DefaultBHttpClientConnection;
  import org.apache.http.io.HttpMessageParserFactory;
  import org.apache.http.io.HttpMessageWriterFactory;
  import org.apache.http.protocol.HttpContext;
  
  /**
   * Default {@link ManagedHttpClientConnection} implementation.
   * @since 4.3
   */
  public class DefaultManagedHttpClientConnection extends DefaultBHttpClientConnection
                                   implements ManagedHttpClientConnection, HttpContext {
  
      private final String id;
      private final Map<String, Object> attributes;
  
      private volatile boolean shutdown;
  
      public DefaultManagedHttpClientConnection(
              final String id,
              final int bufferSize,
              final int fragmentSizeHint,
              final CharsetDecoder charDecoder,
              final CharsetEncoder charEncoder,
              final MessageConstraints constraints,
              final ContentLengthStrategy incomingContentStrategy,
              final ContentLengthStrategy outgoingContentStrategy,
              final HttpMessageWriterFactory<HttpRequest> requestWriterFactory,
              final HttpMessageParserFactory<HttpResponse> responseParserFactory) {
          super(bufferSize, fragmentSizeHint, charDecoder, charEncoder,
                  constraints, incomingContentStrategy, outgoingContentStrategy,
                  requestWriterFactory, responseParserFactory);
          this.id = id;
          this.attributes = new ConcurrentHashMap<String, Object>();
      }
  
      public DefaultManagedHttpClientConnection(
              final String id,
              final int bufferSize) {
          this(id, bufferSize, bufferSize, null, null, null, null, null, null, null);
      }
  
      @Override
      public String getId() {
          return this.id;
      }
  
      @Override
      public void shutdown() throws IOException {
          this.shutdown = true;
          super.shutdown();
      }
  
      @Override
      public Object getAttribute(final String id) {
         return this.attributes.get(id);
     }
 
     @Override
     public Object removeAttribute(final String id) {
         return this.attributes.remove(id);
     }
 
     @Override
     public void setAttribute(final String id, final Object obj) {
         this.attributes.put(id, obj);
     }
 
     @Override
     public void bind(final Socket socket) throws IOException {
         if (this.shutdown) {
             socket.close(); // allow this to throw...
             // ...but if it doesn't, explicitly throw one ourselves.
             throw new InterruptedIOException("Connection already shutdown");
         }
         super.bind(socket);
     }
 
     @Override
     public Socket getSocket() {
         return super.getSocket();
     }
 
     @Override
     public SSLSession getSSLSession() {
         final Socket socket = super.getSocket();
         return socket instanceof SSLSocket ? ((SSLSocket) socket).getSession() : null;
     }
 
 }