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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 com.google.common.collect.ImmutableSet;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.extensions.events.AccountIndexedListener;
import com.google.gerrit.index.Index;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.server.account.AccountCache;
import com.google.gerrit.server.account.AccountState;
import com.google.gerrit.server.logging.TraceContext;
import com.google.gerrit.server.logging.TraceContext.TraceTimer;
import com.google.gerrit.server.plugincontext.PluginSetContext;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.Optional;
public class AccountIndexerImpl implements AccountIndexer {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
public interface Factory {
AccountIndexerImpl create(AccountIndexCollection indexes);
AccountIndexerImpl create(@Nullable AccountIndex index);
}
private final AccountCache byIdCache;
private final PluginSetContext<AccountIndexedListener> indexedListener;
private final StalenessChecker stalenessChecker;
@Nullable private final AccountIndexCollection indexes;
@Nullable private final AccountIndex index;
@AssistedInject
AccountIndexerImpl(
AccountCache byIdCache,
PluginSetContext<AccountIndexedListener> indexedListener,
StalenessChecker stalenessChecker,
@Assisted AccountIndexCollection indexes) {
this.byIdCache = byIdCache;
this.indexedListener = indexedListener;
this.stalenessChecker = stalenessChecker;
this.indexes = indexes;
this.index = null;
}
@AssistedInject
AccountIndexerImpl(
AccountCache byIdCache,
PluginSetContext<AccountIndexedListener> indexedListener,
StalenessChecker stalenessChecker,
@Assisted @Nullable AccountIndex index) {
this.byIdCache = byIdCache;
this.indexedListener = indexedListener;
this.stalenessChecker = stalenessChecker;
this.indexes = null;
this.index = index;
}
@Override
public void index(Account.Id id) throws IOException {
byIdCache.evict(id);
Optional<AccountState> accountState = byIdCache.get(id);
if (accountState.isPresent()) {
logger.atFine().log("Replace account %d in index", id.get());
} else {
logger.atFine().log("Delete account %d from index", id.get());
}
for (Index<Account.Id, AccountState> i : getWriteIndexes()) {
// Evict the cache to get an up-to-date value for sure.
if (accountState.isPresent()) {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Replacing account %d in index version %d", id.get(), i.getSchema().getVersion())) {
i.replace(accountState.get());
}
} else {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Deleteing account %d in index version %d", id.get(), i.getSchema().getVersion())) {
i.delete(id);
}
}
}
fireAccountIndexedEvent(id.get());
}
@Override
public boolean reindexIfStale(Account.Id id) throws IOException {
if (stalenessChecker.isStale(id)) {
index(id);
return true;
}
return false;
}
private void fireAccountIndexedEvent(int id) {
indexedListener.runEach(l -> l.onAccountIndexed(id));
}
private Collection<AccountIndex> getWriteIndexes() {
if (indexes != null) {
return indexes.getWriteIndexes();
}
return index != null ? Collections.singleton(index) : ImmutableSet.<AccountIndex>of();
}
}
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