/*
    * ====================================================================
    * 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.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicLong;
  
  import org.apache.commons.logging.Log;
  import org.apache.http.conn.ClientConnectionOperator;
  import org.apache.http.conn.OperatedClientConnection;
  import org.apache.http.conn.routing.HttpRoute;
  import org.apache.http.pool.AbstractConnPool;
  import org.apache.http.pool.ConnFactory;
  
  /**
   * @since 4.2
   */
  class HttpConnPool extends AbstractConnPool<HttpRoute, OperatedClientConnection, HttpPoolEntry> {
  
      private static AtomicLong COUNTER = new AtomicLong();
  
      private final Log log;
      private final long timeToLive;
      private final TimeUnit tunit;
  
      public HttpConnPool(final Log log,
              final ClientConnectionOperator connOperator,
              final int defaultMaxPerRoute, final int maxTotal,
              final long timeToLive, final TimeUnit tunit) {
          super(new InternalConnFactory(connOperator), defaultMaxPerRoute, maxTotal);
          this.log = log;
          this.timeToLive = timeToLive;
          this.tunit = tunit;
      }
  
      @Override
      protected HttpPoolEntry createEntry(final HttpRoute route, final OperatedClientConnection conn) {
          String id = Long.toString(COUNTER.getAndIncrement());
          return new HttpPoolEntry(this.log, id, route, conn, this.timeToLive, this.tunit);
      }
  
      static class InternalConnFactory implements ConnFactory<HttpRoute, OperatedClientConnection> {
  
          private final ClientConnectionOperator connOperator;
  
          InternalConnFactory(final ClientConnectionOperator connOperator) {
              this.connOperator = connOperator;
          }
  
          public OperatedClientConnection create(final HttpRoute route) throws IOException {
              return connOperator.createConnection();
          }
  
      }
  
  }