/*
    * ====================================================================
    * 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.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicLong;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.http.annotation.Contract;
  import org.apache.http.annotation.ThreadingBehavior;
  import org.apache.http.conn.ManagedHttpClientConnection;
  import org.apache.http.conn.routing.HttpRoute;
  import org.apache.http.pool.AbstractConnPool;
  import org.apache.http.pool.ConnFactory;
  import org.apache.http.pool.PoolEntryCallback;
  
  /**
   * @since 4.3
   */
  @Contract(threading = ThreadingBehavior.SAFE)
  class CPool extends AbstractConnPool<HttpRoute, ManagedHttpClientConnection, CPoolEntry> {
  
      private static final AtomicLong COUNTER = new AtomicLong();
  
      private final Log log = LogFactory.getLog(CPool.class);
      private final long timeToLive;
      private final TimeUnit timeUnit;
  
      public CPool(
              final ConnFactory<HttpRoute, ManagedHttpClientConnection> connFactory,
              final int defaultMaxPerRoute, final int maxTotal,
              final long timeToLive, final TimeUnit timeUnit) {
          super(connFactory, defaultMaxPerRoute, maxTotal);
          this.timeToLive = timeToLive;
          this.timeUnit = timeUnit;
      }
  
      @Override
      protected CPoolEntry createEntry(final HttpRoute route, final ManagedHttpClientConnection conn) {
          final String id = Long.toString(COUNTER.getAndIncrement());
          return new CPoolEntry(this.log, id, route, conn, this.timeToLive, this.timeUnit);
      }
  
      @Override
      protected boolean validate(final CPoolEntry entry) {
          return !entry.getConnection().isStale();
      }
  
      @Override
      protected void enumAvailable(final PoolEntryCallback<HttpRoute, ManagedHttpClientConnection> callback) {
          super.enumAvailable(callback);
      }
  
      @Override
      protected void enumLeased(final PoolEntryCallback<HttpRoute, ManagedHttpClientConnection> callback) {
          super.enumLeased(callback);
      }
  
  }