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 }