1 package org.eclipse.aether.transport.http;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.http.HttpResponse;
23 import org.apache.http.client.HttpResponseException;
24 import org.apache.http.client.methods.HttpUriRequest;
25
26 import java.util.Map;
27
28 /**
29 * A component extracting included checksums from response of artifact request.
30 *
31 * @since 1.8.0
32 */
33 public abstract class ChecksumExtractor
34 {
35 /**
36 * Prepares request, if needed.
37 */
38 public void prepareRequest( HttpUriRequest request )
39 {
40 // nothing
41 }
42
43 /**
44 * May control is request to be retried with checksum extractors disabled.
45 */
46 public boolean retryWithoutExtractor( HttpResponseException exception )
47 {
48 return false; // nothing, usually tied to prepareRequest
49 }
50
51 /**
52 * Tries to extract checksums from response headers, if present, otherwise returns {@code null}.
53 */
54 public abstract Map<String, String> extractChecksums( HttpResponse response );
55 }