View Javadoc
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  
28  package org.apache.hc.core5.http.nio.entity;
29  
30  import java.io.IOException;
31  import java.nio.ByteBuffer;
32  
33  import org.apache.hc.core5.http.ContentType;
34  import org.apache.hc.core5.http.HttpException;
35  import org.apache.hc.core5.util.ByteArrayBuffer;
36  
37  /**
38   * Basic {@link org.apache.hc.core5.http.nio.AsyncEntityConsumer} implementation
39   * that processes the data stream content into a byte array.
40   *
41   * @since 5.0
42   */
43  public class BasicAsyncEntityConsumer extends AbstractBinAsyncEntityConsumer<byte[]> {
44  
45      private final ByteArrayBuffer buffer;
46  
47      public BasicAsyncEntityConsumer() {
48          super();
49          this.buffer = new ByteArrayBuffer(1024);
50      }
51  
52      @Override
53      protected void streamStart(final ContentType contentType) throws HttpException, IOException {
54      }
55  
56      @Override
57      protected int capacityIncrement() {
58          return Integer.MAX_VALUE;
59      }
60  
61      @Override
62      protected void data(final ByteBuffer src, final boolean endOfStream) throws IOException {
63          if (src == null) {
64              return;
65          }
66          if (src.hasArray()) {
67              buffer.append(src.array(), src.arrayOffset() + src.position(), src.remaining());
68          } else {
69              while (src.hasRemaining()) {
70                  buffer.append(src.get());
71              }
72          }
73      }
74  
75      @Override
76      protected byte[] generateContent() throws IOException {
77          return buffer.toByteArray();
78      }
79  
80      @Override
81      public void releaseResources() {
82      }
83  
84  }