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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  
28  package org.apache.hc.core5.http.nio.entity;
29  
30  import java.io.IOException;
31  import java.nio.ByteBuffer;
32  import java.nio.CharBuffer;
33  import java.util.concurrent.atomic.AtomicLong;
34  
35  import org.apache.hc.core5.concurrent.FutureCallback;
36  import org.apache.hc.core5.http.ContentType;
37  import org.apache.hc.core5.http.HttpException;
38  import org.apache.hc.core5.http.impl.BasicEntityDetails;
39  import org.apache.hc.core5.http.nio.AsyncEntityConsumer;
40  import org.junit.Assert;
41  import org.junit.Test;
42  
43  public class TestAbstractCharAsyncEntityConsumer {
44  
45      static private class StringBuilderAsyncEntityConsumer extends AbstractCharAsyncEntityConsumer<String> {
46  
47          private final StringBuilder buffer;
48  
49          public StringBuilderAsyncEntityConsumer() {
50              super();
51              this.buffer = new StringBuilder(1024);
52          }
53  
54          @Override
55          protected void streamStart(final ContentType contentType) throws HttpException, IOException {
56          }
57  
58          @Override
59          protected int capacity() {
60              return Integer.MAX_VALUE;
61          }
62  
63          @Override
64          protected void data(final CharBuffer src, final boolean endOfStream) throws IOException {
65              buffer.append(src);
66          }
67  
68          @Override
69          protected String generateContent() throws IOException {
70              return buffer.toString();
71          }
72  
73          @Override
74          public void releaseResources() {
75              buffer.setLength(0);
76          }
77  
78      };
79  
80      @Test
81      public void testConsumeData() throws Exception {
82  
83          final AsyncEntityConsumer<String> consumer = new StringBuilderAsyncEntityConsumer();
84  
85          final AtomicLong count = new AtomicLong(0);
86          consumer.streamStart(new BasicEntityDetails(-1, ContentType.TEXT_PLAIN), new FutureCallback<String>() {
87  
88              @Override
89              public void completed(final String result) {
90                  count.incrementAndGet();
91              }
92  
93              @Override
94              public void failed(final Exception ex) {
95                  count.incrementAndGet();
96              }
97  
98              @Override
99              public void cancelled() {
100                 count.incrementAndGet();
101             }
102 
103         });
104 
105         consumer.consume(ByteBuffer.wrap(new byte[]{'1', '2', '3'}));
106         consumer.consume(ByteBuffer.wrap(new byte[]{'4', '5'}));
107         consumer.consume(ByteBuffer.wrap(new byte[]{}));
108 
109         Assert.assertEquals(null, consumer.getContent());
110         consumer.streamEnd(null);
111 
112         Assert.assertEquals("12345", consumer.getContent());
113         Assert.assertEquals(1L, count.longValue());
114     }
115 
116 }