| // Copyright (C) 2020 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.modules.cache.chroniclemap; |
| |
| import com.google.common.cache.Cache; |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| import com.google.gerrit.extensions.events.LifecycleListener; |
| import com.google.gerrit.extensions.registration.DynamicMap; |
| import com.google.gerrit.server.cache.CacheBackend; |
| import com.google.gerrit.server.cache.PersistentCacheDef; |
| import com.google.gerrit.server.cache.PersistentCacheFactory; |
| import com.google.gerrit.server.logging.LoggingContextAwareScheduledExecutorService; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.io.UncheckedIOException; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| @Singleton |
| class ChronicleMapCacheFactory implements PersistentCacheFactory, LifecycleListener { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private final ChronicleMapCacheConfig.Factory configFactory; |
| private final DynamicMap<Cache<?, ?>> cacheMap; |
| private final List<ChronicleMapCacheImpl<?, ?>> caches; |
| private final ScheduledExecutorService cleanup; |
| |
| @Inject |
| ChronicleMapCacheFactory( |
| ChronicleMapCacheConfig.Factory configFactory, DynamicMap<Cache<?, ?>> cacheMap) { |
| this.configFactory = configFactory; |
| this.caches = new LinkedList<>(); |
| this.cacheMap = cacheMap; |
| this.cleanup = |
| new LoggingContextAwareScheduledExecutorService( |
| Executors.newScheduledThreadPool( |
| 1, |
| new ThreadFactoryBuilder() |
| .setNameFormat("ChronicleMap-Prune-%d") |
| .setDaemon(true) |
| .build())); |
| } |
| |
| @SuppressWarnings({"unchecked"}) |
| @Override |
| public <K, V> Cache<K, V> build(PersistentCacheDef<K, V> in, CacheBackend backend) { |
| ChronicleMapCacheConfig config = |
| configFactory.create( |
| in.name(), |
| in.configKey(), |
| in.diskLimit(), |
| in.expireAfterWrite(), |
| in.refreshAfterWrite()); |
| ChronicleMapCacheImpl<K, V> cache = null; |
| try { |
| cache = new ChronicleMapCacheImpl<>(in, config, null); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| synchronized (caches) { |
| caches.add(cache); |
| } |
| return cache; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K, V> LoadingCache<K, V> build( |
| PersistentCacheDef<K, V> in, CacheLoader<K, V> loader, CacheBackend backend) { |
| ChronicleMapCacheConfig config = |
| configFactory.create( |
| in.name(), |
| in.configKey(), |
| in.diskLimit(), |
| in.expireAfterWrite(), |
| in.refreshAfterWrite()); |
| ChronicleMapCacheImpl<K, V> cache = null; |
| try { |
| cache = new ChronicleMapCacheImpl<>(in, config, loader); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| synchronized (caches) { |
| caches.add(cache); |
| } |
| return cache; |
| } |
| |
| @Override |
| public void onStop(String plugin) { |
| synchronized (caches) { |
| for (Map.Entry<String, Provider<Cache<?, ?>>> entry : cacheMap.byPlugin(plugin).entrySet()) { |
| Cache<?, ?> cache = entry.getValue().get(); |
| if (caches.remove(cache)) { |
| ((ChronicleMapCacheImpl<?, ?>) cache).close(); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void start() { |
| for (ChronicleMapCacheImpl<?, ?> cache : caches) { |
| if (!cache.getConfig().getExpireAfterWrite().isZero()) { |
| cleanup.scheduleWithFixedDelay(cache::prune, 30, 30, TimeUnit.SECONDS); |
| } |
| } |
| } |
| |
| @Override |
| public void stop() { |
| cleanup.shutdownNow(); |
| } |
| } |