| // Copyright (C) 2009 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.google.gerrit.server.patch; |
| |
| |
| import com.google.gerrit.reviewdb.AccountDiffPreference.Whitespace; |
| import com.google.gerrit.reviewdb.Change; |
| import com.google.gerrit.reviewdb.PatchSet; |
| import com.google.gerrit.reviewdb.Project; |
| import com.google.gerrit.server.cache.Cache; |
| import com.google.gerrit.server.cache.CacheModule; |
| import com.google.gerrit.server.cache.EvictionPolicy; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.inject.Inject; |
| import com.google.inject.Module; |
| import com.google.inject.Singleton; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.name.Named; |
| |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.lib.ObjectId; |
| |
| /** Provides a cached list of {@link PatchListEntry}. */ |
| @Singleton |
| public class PatchListCacheImpl implements PatchListCache { |
| private static final String FILE_NAME = "diff"; |
| static final String INTRA_NAME = "diff_intraline"; |
| |
| public static Module module() { |
| return new CacheModule() { |
| @Override |
| protected void configure() { |
| final TypeLiteral<Cache<PatchListKey, PatchList>> fileType = |
| new TypeLiteral<Cache<PatchListKey, PatchList>>() {}; |
| disk(fileType, FILE_NAME) // |
| .memoryLimit(128) // very large items, cache only a few |
| .evictionPolicy(EvictionPolicy.LRU) // prefer most recent |
| .populateWith(PatchListLoader.class) // |
| ; |
| |
| final TypeLiteral<Cache<IntraLineDiffKey, IntraLineDiff>> intraType = |
| new TypeLiteral<Cache<IntraLineDiffKey, IntraLineDiff>>() {}; |
| disk(intraType, INTRA_NAME) // |
| .memoryLimit(128) // very large items, cache only a few |
| .evictionPolicy(EvictionPolicy.LRU) // prefer most recent |
| .populateWith(IntraLineLoader.class) // |
| ; |
| |
| bind(PatchListCacheImpl.class); |
| bind(PatchListCache.class).to(PatchListCacheImpl.class); |
| } |
| }; |
| } |
| |
| private final Cache<PatchListKey, PatchList> fileCache; |
| private final Cache<IntraLineDiffKey, IntraLineDiff> intraCache; |
| private final boolean computeIntraline; |
| |
| @Inject |
| PatchListCacheImpl( |
| @Named(FILE_NAME) final Cache<PatchListKey, PatchList> fileCache, |
| @Named(INTRA_NAME) final Cache<IntraLineDiffKey, IntraLineDiff> intraCache, |
| @GerritServerConfig Config cfg) { |
| this.fileCache = fileCache; |
| this.intraCache = intraCache; |
| |
| this.computeIntraline = |
| cfg.getBoolean("cache", INTRA_NAME, "enabled", |
| cfg.getBoolean("cache", "diff", "intraline", true)); |
| } |
| |
| public PatchList get(final PatchListKey key) { |
| return fileCache.get(key); |
| } |
| |
| public PatchList get(final Change change, final PatchSet patchSet) { |
| final Project.NameKey projectKey = change.getProject(); |
| final ObjectId a = null; |
| final ObjectId b = ObjectId.fromString(patchSet.getRevision().get()); |
| final Whitespace ws = Whitespace.IGNORE_NONE; |
| return get(new PatchListKey(projectKey, a, b, ws)); |
| } |
| |
| @Override |
| public IntraLineDiff getIntraLineDiff(IntraLineDiffKey key) { |
| if (computeIntraline) { |
| IntraLineDiff d = intraCache.get(key); |
| if (d == null) { |
| d = new IntraLineDiff(IntraLineDiff.Status.ERROR); |
| } |
| return d; |
| } else { |
| return new IntraLineDiff(IntraLineDiff.Status.DISABLED); |
| } |
| } |
| } |