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// Copyright (C) 2016 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.account;
import static com.google.gerrit.server.git.QueueProvider.QueueType.BATCH;
import com.google.common.base.Stopwatch;
import com.google.common.flogger.FluentLogger;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.gerrit.entities.Account;
import com.google.gerrit.index.SiteIndexer;
import com.google.gerrit.server.account.AccountCache;
import com.google.gerrit.server.account.AccountState;
import com.google.gerrit.server.account.Accounts;
import com.google.gerrit.server.index.IndexExecutor;
import com.google.gerrit.server.index.options.IsFirstInsertForEntry;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import org.eclipse.jgit.lib.ProgressMonitor;
import org.eclipse.jgit.lib.TextProgressMonitor;
/**
* Implementation that can index all accounts on a host. Used by Gerrit's initialization and upgrade
* programs as well as by REST API endpoints that offer this functionality.
*/
@Singleton
public class AllAccountsIndexer extends SiteIndexer<Account.Id, AccountState, AccountIndex> {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
private final ListeningExecutorService executor;
private final Accounts accounts;
private final AccountCache accountCache;
private final IsFirstInsertForEntry isFirstInsertForEntry;
@Inject
AllAccountsIndexer(
@IndexExecutor(BATCH) ListeningExecutorService executor,
Accounts accounts,
AccountCache accountCache,
IsFirstInsertForEntry isFirstInsertForEntry) {
this.executor = executor;
this.accounts = accounts;
this.accountCache = accountCache;
this.isFirstInsertForEntry = isFirstInsertForEntry;
}
@Override
public SiteIndexer.Result indexAll(AccountIndex index) {
ProgressMonitor progress = new TextProgressMonitor(newPrintWriter(progressOut));
progress.start(2);
Stopwatch sw = Stopwatch.createStarted();
List<Account.Id> ids;
try {
ids = collectAccounts(progress);
} catch (IOException e) {
logger.atSevere().withCause(e).log("Error collecting accounts");
return SiteIndexer.Result.create(sw, false, 0, 0);
}
return reindexAccounts(index, ids, progress);
}
private SiteIndexer.Result reindexAccounts(
AccountIndex index, List<Account.Id> ids, ProgressMonitor progress) {
progress.beginTask("Reindexing accounts", ids.size());
List<ListenableFuture<?>> futures = new ArrayList<>(ids.size());
AtomicBoolean ok = new AtomicBoolean(true);
AtomicInteger done = new AtomicInteger();
AtomicInteger failed = new AtomicInteger();
Stopwatch sw = Stopwatch.createStarted();
for (Account.Id id : ids) {
String desc = "account " + id;
ListenableFuture<?> future =
executor.submit(
() -> {
try {
Optional<AccountState> a = accountCache.get(id);
if (a.isPresent()) {
if (isFirstInsertForEntry.equals(IsFirstInsertForEntry.YES)) {
index.insert(a.get());
} else {
index.replace(a.get());
}
} else {
index.delete(id);
}
verboseWriter.println("Reindexed " + desc);
done.incrementAndGet();
} catch (Exception e) {
failed.incrementAndGet();
throw e;
}
return null;
});
addErrorListener(future, desc, progress, ok);
futures.add(future);
}
try {
Futures.successfulAsList(futures).get();
} catch (ExecutionException | InterruptedException e) {
logger.atSevere().withCause(e).log("Error waiting on account futures");
return SiteIndexer.Result.create(sw, false, 0, 0);
}
progress.endTask();
return SiteIndexer.Result.create(sw, ok.get(), done.get(), failed.get());
}
private List<Account.Id> collectAccounts(ProgressMonitor progress) throws IOException {
progress.beginTask("Collecting accounts", ProgressMonitor.UNKNOWN);
List<Account.Id> ids = new ArrayList<>();
for (Account.Id accountId : accounts.allIds()) {
ids.add(accountId);
progress.update(1);
}
progress.endTask();
return ids;
}
}