// 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.common.cache.LoadingCache;
import com.google.gerrit.reviewdb.client.AccountDiffPreference.Whitespace;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.cache.CacheModule;
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.name.Named;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.ObjectId;
import java.util.concurrent.ExecutionException;
/** 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() {
persist(FILE_NAME, PatchListKey.class, PatchList.class)
.maximumWeight(10 << 20)
.loader(PatchListLoader.class)
.weigher(PatchListWeigher.class);
persist(INTRA_NAME, IntraLineDiffKey.class, IntraLineDiff.class)
.maximumWeight(10 << 20)
.loader(IntraLineLoader.class)
.weigher(IntraLineWeigher.class);
bind(PatchListCacheImpl.class);
bind(PatchListCache.class).to(PatchListCacheImpl.class);
}
};
}
private final LoadingCache<PatchListKey, PatchList> fileCache;
private final LoadingCache<IntraLineDiffKey, IntraLineDiff> intraCache;
private final boolean computeIntraline;
@Inject
PatchListCacheImpl(
@Named(FILE_NAME) LoadingCache<PatchListKey, PatchList> fileCache,
@Named(INTRA_NAME) LoadingCache<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));
}
@Override
public PatchList get(PatchListKey key) throws PatchListNotAvailableException {
try {
return fileCache.get(key);
} catch (ExecutionException e) {
PatchListLoader.log.warn("Error computing " + key, e);
throw new PatchListNotAvailableException(e.getCause());
}
}
@Override
public PatchList get(final Change change, final PatchSet patchSet)
throws PatchListNotAvailableException {
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) {
try {
return intraCache.get(key);
} catch (ExecutionException e) {
IntraLineLoader.log.warn("Error computing " + key, e);
return new IntraLineDiff(IntraLineDiff.Status.ERROR);
}
} else {
return new IntraLineDiff(IntraLineDiff.Status.DISABLED);
}
}
}