| // 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 static java.util.concurrent.TimeUnit.SECONDS; |
| |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.server.config.ConfigUtil; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.gerrit.server.config.SitePaths; |
| import com.google.inject.assistedinject.Assisted; |
| import com.google.inject.assistedinject.AssistedInject; |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.time.Duration; |
| import org.eclipse.jgit.lib.Config; |
| |
| public class ChronicleMapCacheConfig { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private final File persistedFile; |
| private final long diskLimit; |
| private final long maxEntries; |
| private final long averageKeySize; |
| private final long averageValueSize; |
| private final Duration expireAfterWrite; |
| private final Duration refreshAfterWrite; |
| private final int maxBloatFactor; |
| |
| public static final long DEFAULT_MAX_ENTRIES = 1000; |
| |
| public static final long DEFAULT_AVG_KEY_SIZE = 128; |
| public static final long DEFAULT_AVG_VALUE_SIZE = 2048; |
| |
| public static final int DEFAULT_MAX_BLOAT_FACTOR = 1; |
| |
| public interface Factory { |
| ChronicleMapCacheConfig create( |
| @Assisted("Name") String name, |
| @Assisted("ConfigKey") String configKey, |
| @Assisted("DiskLimit") long diskLimit, |
| @Nullable @Assisted("ExpireAfterWrite") Duration expireAfterWrite, |
| @Nullable @Assisted("RefreshAfterWrite") Duration refreshAfterWrite); |
| } |
| |
| @AssistedInject |
| ChronicleMapCacheConfig( |
| @GerritServerConfig Config cfg, |
| SitePaths site, |
| @Assisted("Name") String name, |
| @Assisted("ConfigKey") String configKey, |
| @Assisted("DiskLimit") long diskLimit, |
| @Nullable @Assisted("ExpireAfterWrite") Duration expireAfterWrite, |
| @Nullable @Assisted("RefreshAfterWrite") Duration refreshAfterWrite) { |
| final Path cacheDir = getCacheDir(site, cfg.getString("cache", null, "directory")); |
| this.persistedFile = |
| cacheDir != null ? cacheDir.resolve(String.format("%s.dat", name)).toFile() : null; |
| this.diskLimit = cfg.getLong("cache", configKey, "diskLimit", diskLimit); |
| |
| this.maxEntries = cfg.getLong("cache", configKey, "maxEntries", DEFAULT_MAX_ENTRIES); |
| this.averageKeySize = cfg.getLong("cache", configKey, "avgKeySize", DEFAULT_AVG_KEY_SIZE); |
| this.averageValueSize = cfg.getLong("cache", configKey, "avgValueSize", DEFAULT_AVG_VALUE_SIZE); |
| this.expireAfterWrite = |
| Duration.ofSeconds( |
| ConfigUtil.getTimeUnit( |
| cfg, "cache", configKey, "maxAge", toSeconds(expireAfterWrite), SECONDS)); |
| this.refreshAfterWrite = |
| Duration.ofSeconds( |
| ConfigUtil.getTimeUnit( |
| cfg, |
| "cache", |
| configKey, |
| "refreshAfterWrite", |
| toSeconds(refreshAfterWrite), |
| SECONDS)); |
| |
| this.maxBloatFactor = |
| cfg.getInt("cache", configKey, "maxBloatFactor", DEFAULT_MAX_BLOAT_FACTOR); |
| } |
| |
| public Duration getExpireAfterWrite() { |
| return expireAfterWrite; |
| } |
| |
| public Duration getRefreshAfterWrite() { |
| return refreshAfterWrite; |
| } |
| |
| public long getMaxEntries() { |
| return maxEntries; |
| } |
| |
| public File getPersistedFile() { |
| return persistedFile; |
| } |
| |
| public long getAverageKeySize() { |
| return averageKeySize; |
| } |
| |
| public long getAverageValueSize() { |
| return averageValueSize; |
| } |
| |
| public long getDiskLimit() { |
| return diskLimit; |
| } |
| |
| public int getMaxBloatFactor() { |
| return maxBloatFactor; |
| } |
| |
| private static Path getCacheDir(SitePaths site, String name) { |
| if (name == null) { |
| return null; |
| } |
| Path loc = site.resolve(name); |
| if (!Files.exists(loc)) { |
| try { |
| Files.createDirectories(loc); |
| } catch (IOException e) { |
| logger.atWarning().log("Can't create disk cache: %s", loc.toAbsolutePath()); |
| return null; |
| } |
| } |
| if (!Files.isWritable(loc)) { |
| logger.atWarning().log("Can't write to disk cache: %s", loc.toAbsolutePath()); |
| return null; |
| } |
| logger.atFine().log("Enabling disk cache %s", loc.toAbsolutePath()); |
| return loc; |
| } |
| |
| private static long toSeconds(@Nullable Duration duration) { |
| return duration != null ? duration.getSeconds() : 0; |
| } |
| } |