1 /*
2 * The MIT License (MIT)
3 *
4 * Copyright (c) 2013 - 2023, Tapio Rautonen
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 package org.eluder.coveralls.maven.plugin.source;
25
26 import org.eluder.coveralls.maven.plugin.ProcessingException;
27 import org.eluder.coveralls.maven.plugin.domain.Source;
28
29 import java.io.IOException;
30 import java.util.LinkedHashMap;
31 import java.util.Map;
32
33 /**
34 * Source callback that tracks passed by source files and provides only unique
35 * source files to the delegate. Note that the implementation is not thread
36 * safe so the {@link #onSource(org.eluder.coveralls.maven.plugin.domain.Source)}
37 * can be called only from single thread concurrently.
38 */
39 public class UniqueSourceCallback implements SourceCallback {
40
41 private final Map<Source, Source> cache;
42 private final SourceCallback delegate;
43
44 public UniqueSourceCallback(final SourceCallback delegate) {
45 this.cache = new LinkedHashMap<>();
46 this.delegate = delegate;
47 }
48
49 @Override
50 public void onBegin() throws ProcessingException, IOException {
51 delegate.onBegin();
52 }
53
54 @Override
55 public void onSource(final Source source) throws ProcessingException, IOException {
56 Source merged = source.merge(cache.get(source));
57 cache.put(merged, merged);
58 }
59
60 @Override
61 public void onComplete() throws ProcessingException, IOException {
62 for (Source source : cache.values()) {
63 delegate.onSource(source);
64 }
65 delegate.onComplete();
66 }
67 }