| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.maven.repository.internal; |
| |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.function.Supplier; |
| |
| import org.apache.maven.building.Source; |
| import org.apache.maven.model.building.ModelCache; |
| import org.eclipse.aether.RepositorySystemSession; |
| |
| /** |
| * A model builder cache backed by the repository system cache. |
| * |
| */ |
| public class DefaultModelCache implements ModelCache { |
| |
| private static final String KEY = DefaultModelCache.class.getName(); |
| |
| private final Map<Object, Supplier<?>> cache; |
| |
| public static ModelCache newInstance(RepositorySystemSession session) { |
| Map<Object, Supplier<?>> cache; |
| if (session.getCache() == null) { |
| cache = new ConcurrentHashMap<>(); |
| } else { |
| cache = (Map) session.getCache().get(session, KEY); |
| if (cache == null) { |
| cache = new ConcurrentHashMap<>(); |
| session.getCache().put(session, KEY, cache); |
| } |
| } |
| return new DefaultModelCache(cache); |
| } |
| |
| private DefaultModelCache(Map<Object, Supplier<?>> cache) { |
| this.cache = cache; |
| } |
| |
| public Object get(Source path, String tag) { |
| return get(new SourceCacheKey(path, tag)); |
| } |
| |
| public void put(Source path, String tag, Object data) { |
| put(new SourceCacheKey(path, tag), data); |
| } |
| |
| @Override |
| public Object get(String groupId, String artifactId, String version, String tag) { |
| return get(new GavCacheKey(groupId, artifactId, version, tag)); |
| } |
| |
| @Override |
| public void put(String groupId, String artifactId, String version, String tag, Object data) { |
| put(new GavCacheKey(groupId, artifactId, version, tag), data); |
| } |
| |
| protected Object get(Object key) { |
| Supplier<?> s = cache.get(key); |
| return s != null ? s.get() : null; |
| } |
| |
| protected void put(Object key, Object data) { |
| cache.put(key, () -> data); |
| } |
| |
| @Override |
| public Object computeIfAbsent( |
| String groupId, String artifactId, String version, String tag, Supplier<Supplier<?>> data) { |
| return computeIfAbsent(new GavCacheKey(groupId, artifactId, version, tag), data); |
| } |
| |
| @Override |
| public Object computeIfAbsent(Source path, String tag, Supplier<Supplier<?>> data) { |
| return computeIfAbsent(new SourceCacheKey(path, tag), data); |
| } |
| |
| protected Object computeIfAbsent(Object key, Supplier<Supplier<?>> data) { |
| Supplier<?> s = cache.computeIfAbsent(key, k -> data.get()); |
| return s != null ? s.get() : null; |
| } |
| |
| static class GavCacheKey { |
| |
| private final String gav; |
| |
| private final String tag; |
| |
| private final int hash; |
| |
| GavCacheKey(String groupId, String artifactId, String version, String tag) { |
| this(gav(groupId, artifactId, version), tag); |
| } |
| |
| GavCacheKey(String gav, String tag) { |
| this.gav = gav; |
| this.tag = tag; |
| this.hash = Objects.hash(gav, tag); |
| } |
| |
| private static String gav(String groupId, String artifactId, String version) { |
| StringBuilder sb = new StringBuilder(); |
| if (groupId != null) { |
| sb.append(groupId); |
| } |
| sb.append(":"); |
| if (artifactId != null) { |
| sb.append(artifactId); |
| } |
| sb.append(":"); |
| if (version != null) { |
| sb.append(version); |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (null == obj || !getClass().equals(obj.getClass())) { |
| return false; |
| } |
| GavCacheKey that = (GavCacheKey) obj; |
| return Objects.equals(this.gav, that.gav) && Objects.equals(this.tag, that.tag); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hash; |
| } |
| |
| @Override |
| public String toString() { |
| return "GavCacheKey{" + "gav='" + gav + '\'' + ", tag='" + tag + '\'' + '}'; |
| } |
| } |
| |
| private static final class SourceCacheKey { |
| private final Source source; |
| |
| private final String tag; |
| |
| private final int hash; |
| |
| SourceCacheKey(Source source, String tag) { |
| this.source = source; |
| this.tag = tag; |
| this.hash = Objects.hash(source, tag); |
| } |
| |
| @Override |
| public String toString() { |
| return "SourceCacheKey{" + "source=" + source + ", tag='" + tag + '\'' + '}'; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (null == obj || !getClass().equals(obj.getClass())) { |
| return false; |
| } |
| SourceCacheKey that = (SourceCacheKey) obj; |
| return Objects.equals(this.source, that.source) && Objects.equals(this.tag, that.tag); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hash; |
| } |
| } |
| } |