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.hc.core5.http.nio.entity;
28
29 import java.io.IOException;
30 import java.nio.ByteBuffer;
31 import java.util.List;
32
33 import org.apache.hc.core5.concurrent.FutureCallback;
34 import org.apache.hc.core5.http.EntityDetails;
35 import org.apache.hc.core5.http.Header;
36 import org.apache.hc.core5.http.HttpException;
37 import org.apache.hc.core5.http.nio.AsyncEntityConsumer;
38 import org.apache.hc.core5.http.nio.CapacityChannel;
39
40 /**
41 * No-op {@link AsyncEntityConsumer} that discards all data from the data stream.
42 *
43 * @since 5.0
44 */
45 public final class NoopEntityConsumer implements AsyncEntityConsumer<Void> {
46
47 private volatile FutureCallback<Void> resultCallback;
48
49 @Override
50 public void streamStart(
51 final EntityDetails entityDetails,
52 final FutureCallback<Void> resultCallback) throws IOException, HttpException {
53 this.resultCallback = resultCallback;
54 }
55
56 @Override
57 public void updateCapacity(final CapacityChannel capacityChannel) throws IOException {
58 capacityChannel.update(Integer.MAX_VALUE);
59 }
60
61 @Override
62 public void consume(final ByteBuffer src) throws IOException {
63 }
64
65 @Override
66 public void streamEnd(final List<? extends Header> trailers) throws IOException {
67 if (resultCallback != null) {
68 resultCallback.completed(null);
69 }
70 }
71
72 @Override
73 public void failed(final Exception cause) {
74 if (resultCallback != null) {
75 resultCallback.failed(cause);
76 }
77 }
78
79 @Override
80 public Void getContent() {
81 return null;
82 }
83
84 @Override
85 public void releaseResources() {
86 }
87
88 }