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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.nio.reactor.ssl;
28  
29  import java.nio.ByteBuffer;
30  import org.apache.http.util.Args;
31  
32  /**
33   * A {@link SSLBufferManagementStrategy} that never releases the underlying buffer.
34   */
35  public class PermanentSSLBufferManagementStrategy implements SSLBufferManagementStrategy {
36  
37      @Override
38      public SSLBuffer constructBuffer(final int size) {
39          return new InternalBuffer(size);
40      }
41  
42  
43      private static final class InternalBuffer implements SSLBuffer {
44  
45          private final ByteBuffer buffer;
46  
47          public InternalBuffer(final int size) {
48              Args.positive(size, "size");
49              buffer = ByteBuffer.allocate(size);
50          }
51  
52          @Override
53          public ByteBuffer acquire() {
54              return buffer;
55          }
56  
57          @Override
58          public void release() {
59              // do nothing
60          }
61  
62          @Override
63          public boolean isAcquired() {
64              return true;
65          }
66  
67          @Override
68          public boolean hasData() {
69              return buffer.position() > 0;
70          }
71  
72      }
73  }