001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.maven.plugins.enforcer.internal;
020
021import javax.inject.Inject;
022import javax.inject.Named;
023import javax.inject.Provider;
024import javax.inject.Singleton;
025
026import java.util.ArrayList;
027import java.util.HashMap;
028import java.util.List;
029import java.util.Map;
030
031import org.apache.maven.enforcer.rule.api.AbstractEnforcerRule;
032import org.apache.maven.execution.MavenSession;
033import org.eclipse.aether.SessionData;
034import org.slf4j.Logger;
035import org.slf4j.LoggerFactory;
036
037/**
038 * Service for manage rules cache storage.
039 *
040 * @author Slawomir Jaranowski
041 * @since 3.2.0
042 */
043@Named
044@Singleton
045public class EnforcerRuleCache {
046
047    private final Logger logger = LoggerFactory.getLogger(EnforcerRuleCache.class);
048
049    private final Provider<MavenSession> sessionProvider;
050
051    @Inject
052    EnforcerRuleCache(Provider<MavenSession> sessionProvider) {
053        this.sessionProvider = sessionProvider;
054    }
055
056    @SuppressWarnings("unchecked")
057    public boolean isCached(AbstractEnforcerRule rule) {
058
059        String cacheId = rule.getCacheId();
060
061        if (cacheId == null) {
062            return false;
063        }
064
065        Class<? extends AbstractEnforcerRule> ruleClass = rule.getClass();
066        logger.debug("Check cache for {} with id {}", ruleClass, cacheId);
067
068        SessionData sessionData = sessionProvider.get().getRepositorySession().getData();
069
070        synchronized (this) {
071
072            // sessionData.computeIfAbsent() is available in Maven 3.9.x, so do it manually
073            Map<Class<? extends AbstractEnforcerRule>, List<String>> cache =
074                    (Map<Class<? extends AbstractEnforcerRule>, List<String>>) sessionData.get("enforcer-cache");
075
076            if (cache == null) {
077                cache = new HashMap<>();
078                sessionData.set("enforcer-cache", cache);
079            }
080
081            List<String> cacheIdList = cache.computeIfAbsent(ruleClass, k -> new ArrayList<>());
082            if (cacheIdList.contains(cacheId)) {
083                logger.debug("Already cached {} with id {}", ruleClass, cacheId);
084                return true;
085            }
086            logger.debug("Add cache {} with id {}", ruleClass, cacheId);
087            cacheIdList.add(cacheId);
088        }
089
090        return false;
091    }
092}