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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  package org.apache.http.impl.conn;
28  
29  import java.util.concurrent.TimeUnit;
30  import java.util.concurrent.atomic.AtomicLong;
31  
32  import org.apache.commons.logging.Log;
33  import org.apache.commons.logging.LogFactory;
34  import org.apache.http.annotation.Contract;
35  import org.apache.http.annotation.ThreadingBehavior;
36  import org.apache.http.conn.ManagedHttpClientConnection;
37  import org.apache.http.conn.routing.HttpRoute;
38  import org.apache.http.pool.AbstractConnPool;
39  import org.apache.http.pool.ConnFactory;
40  import org.apache.http.pool.PoolEntryCallback;
41  
42  /**
43   * @since 4.3
44   */
45  @Contract(threading = ThreadingBehavior.SAFE)
46  class CPool extends AbstractConnPool<HttpRoute, ManagedHttpClientConnection, CPoolEntry> {
47  
48      private static final AtomicLong COUNTER = new AtomicLong();
49  
50      private final Log log = LogFactory.getLog(CPool.class);
51      private final long timeToLive;
52      private final TimeUnit tunit;
53  
54      public CPool(
55              final ConnFactory<HttpRoute, ManagedHttpClientConnection> connFactory,
56              final int defaultMaxPerRoute, final int maxTotal,
57              final long timeToLive, final TimeUnit tunit) {
58          super(connFactory, defaultMaxPerRoute, maxTotal);
59          this.timeToLive = timeToLive;
60          this.tunit = tunit;
61      }
62  
63      @Override
64      protected CPoolEntry createEntry(final HttpRoute route, final ManagedHttpClientConnection conn) {
65          final String id = Long.toString(COUNTER.getAndIncrement());
66          return new CPoolEntry(this.log, id, route, conn, this.timeToLive, this.tunit);
67      }
68  
69      @Override
70      protected boolean validate(final CPoolEntry entry) {
71          return !entry.getConnection().isStale();
72      }
73  
74      @Override
75      protected void enumAvailable(final PoolEntryCallback<HttpRoute, ManagedHttpClientConnection> callback) {
76          super.enumAvailable(callback);
77      }
78  
79      @Override
80      protected void enumLeased(final PoolEntryCallback<HttpRoute, ManagedHttpClientConnection> callback) {
81          super.enumLeased(callback);
82      }
83  
84  }