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// Copyright (C) 2014 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.index.change;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static com.google.gerrit.server.query.change.ChangeData.asChanges;
import com.google.common.flogger.FluentLogger;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.gerrit.extensions.events.GitReferenceUpdatedListener;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.Branch;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.reviewdb.client.RefNames;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.account.AccountCache;
import com.google.gerrit.server.config.AllUsersName;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.git.QueueProvider.QueueType;
import com.google.gerrit.server.index.IndexExecutor;
import com.google.gerrit.server.index.account.AccountIndexer;
import com.google.gerrit.server.notedb.ChangeNotes;
import com.google.gerrit.server.project.NoSuchChangeException;
import com.google.gerrit.server.query.change.InternalChangeQuery;
import com.google.gerrit.server.util.ManualRequestContext;
import com.google.gerrit.server.util.OneOffRequestContext;
import com.google.gerrit.server.util.RequestContext;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import org.eclipse.jgit.lib.Config;
public class ReindexAfterRefUpdate implements GitReferenceUpdatedListener {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
private final OneOffRequestContext requestContext;
private final Provider<InternalChangeQuery> queryProvider;
private final ChangeIndexer.Factory indexerFactory;
private final ChangeIndexCollection indexes;
private final ChangeNotes.Factory notesFactory;
private final AllUsersName allUsersName;
private final AccountCache accountCache;
private final Provider<AccountIndexer> indexer;
private final ListeningExecutorService executor;
private final boolean enabled;
@Inject
ReindexAfterRefUpdate(
@GerritServerConfig Config cfg,
OneOffRequestContext requestContext,
Provider<InternalChangeQuery> queryProvider,
ChangeIndexer.Factory indexerFactory,
ChangeIndexCollection indexes,
ChangeNotes.Factory notesFactory,
AllUsersName allUsersName,
AccountCache accountCache,
Provider<AccountIndexer> indexer,
@IndexExecutor(QueueType.BATCH) ListeningExecutorService executor) {
this.requestContext = requestContext;
this.queryProvider = queryProvider;
this.indexerFactory = indexerFactory;
this.indexes = indexes;
this.notesFactory = notesFactory;
this.allUsersName = allUsersName;
this.accountCache = accountCache;
this.indexer = indexer;
this.executor = executor;
this.enabled = cfg.getBoolean("index", null, "reindexAfterRefUpdate", true);
}
@Override
public void onGitReferenceUpdated(Event event) {
if (allUsersName.get().equals(event.getProjectName())) {
Account.Id accountId = Account.Id.fromRef(event.getRefName());
if (accountId != null && !event.getRefName().startsWith(RefNames.REFS_STARRED_CHANGES)) {
try {
accountCache.evict(accountId);
indexer.get().index(accountId);
} catch (IOException e) {
logger.atSevere().withCause(e).log("Reindex account %s failed.", accountId);
}
}
}
if (!enabled
|| event.getRefName().startsWith(RefNames.REFS_CHANGES)
|| event.getRefName().startsWith(RefNames.REFS_DRAFT_COMMENTS)
|| event.getRefName().startsWith(RefNames.REFS_USERS)) {
return;
}
Futures.addCallback(
executor.submit(new GetChanges(event)),
new FutureCallback<List<Change>>() {
@Override
public void onSuccess(List<Change> changes) {
for (Change c : changes) {
// Don't retry indefinitely; if this fails changes may be stale.
@SuppressWarnings("unused")
Future<?> possiblyIgnoredError = executor.submit(new Index(event, c.getId()));
}
}
@Override
public void onFailure(Throwable ignored) {
// Logged by {@link GetChanges#call()}.
}
},
directExecutor());
}
private abstract class Task<V> implements Callable<V> {
protected Event event;
protected Task(Event event) {
this.event = event;
}
@Override
public final V call() throws Exception {
try (ManualRequestContext ctx = requestContext.open()) {
return impl(ctx);
} catch (Exception e) {
logger.atSevere().withCause(e).log("Failed to reindex changes after %s", event);
throw e;
}
}
protected abstract V impl(RequestContext ctx) throws Exception;
}
private class GetChanges extends Task<List<Change>> {
private GetChanges(Event event) {
super(event);
}
@Override
protected List<Change> impl(RequestContext ctx) throws OrmException {
String ref = event.getRefName();
Project.NameKey project = new Project.NameKey(event.getProjectName());
if (ref.equals(RefNames.REFS_CONFIG)) {
return asChanges(queryProvider.get().byProjectOpen(project));
}
return asChanges(queryProvider.get().byBranchNew(new Branch.NameKey(project, ref)));
}
@Override
public String toString() {
return "Get changes to reindex caused by "
+ event.getRefName()
+ " update of project "
+ event.getProjectName();
}
}
private class Index extends Task<Void> {
private final Change.Id id;
Index(Event event, Change.Id id) {
super(event);
this.id = id;
}
@Override
protected Void impl(RequestContext ctx) throws OrmException, IOException {
// Reload change, as some time may have passed since GetChanges.
ReviewDb db = ctx.getReviewDbProvider().get();
try {
Change c =
notesFactory
.createChecked(db, new Project.NameKey(event.getProjectName()), id)
.getChange();
indexerFactory.create(executor, indexes).index(db, c);
} catch (NoSuchChangeException e) {
indexerFactory.create(executor, indexes).delete(id);
}
return null;
}
@Override
public String toString() {
return "Index change " + id.get() + " of project " + event.getProjectName();
}
}
}
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