| // Copyright (C) 2021 The Android Open Source Project |
| // |
| // Licensed 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 com.googlesource.gerrit.plugins.serviceuser; |
| |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.server.cache.CacheModule; |
| import com.google.gerrit.server.config.AllProjectsName; |
| import com.google.gerrit.server.git.meta.MetaDataUpdate; |
| import com.google.gerrit.server.project.ProjectLevelConfig; |
| import com.google.gerrit.server.project.ProjectLevelConfig.Bare; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import com.google.inject.name.Named; |
| import java.util.concurrent.ExecutionException; |
| import org.eclipse.jgit.lib.Config; |
| |
| @Singleton |
| public class StorageCache { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private static final String CACHE_NAME = "storage"; |
| private static final Object ALL = new Object(); |
| |
| static CacheModule module() { |
| return new CacheModule() { |
| @Override |
| protected void configure() { |
| cache(CACHE_NAME, Object.class, Config.class).loader(Loader.class); |
| bind(StorageCache.class); |
| } |
| }; |
| } |
| |
| private final LoadingCache<Object, Config> cache; |
| |
| @Inject |
| StorageCache(@Named(CACHE_NAME) LoadingCache<Object, Config> cache) { |
| this.cache = cache; |
| } |
| |
| public Config get() { |
| try { |
| return cache.get(ALL); |
| } catch (ExecutionException e) { |
| logger.atSevere().withCause(e).log("Cannot load service users"); |
| return new Config(); |
| } |
| } |
| |
| public void invalidate() { |
| cache.invalidate(ALL); |
| } |
| |
| static class Loader extends CacheLoader<Object, Config> { |
| private final Provider<Bare> configProvider; |
| private final MetaDataUpdate.Server metaDataUpdateFactory; |
| private final AllProjectsName allProjects; |
| |
| @Inject |
| Loader( |
| Provider<ProjectLevelConfig.Bare> configProvider, |
| MetaDataUpdate.Server metaDataUpdateFactory, |
| AllProjectsName allProjects) { |
| this.configProvider = configProvider; |
| this.metaDataUpdateFactory = metaDataUpdateFactory; |
| this.allProjects = allProjects; |
| } |
| |
| @Override |
| public Config load(Object key) throws Exception { |
| ProjectLevelConfig.Bare storage = configProvider.get(); |
| try (MetaDataUpdate md = metaDataUpdateFactory.create(allProjects)) { |
| storage.load(md); |
| } |
| return storage.getConfig(); |
| } |
| } |
| } |