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// Copyright (C) 2017 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.group;
import com.google.common.collect.ImmutableSet;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.exceptions.StorageException;
import com.google.gerrit.extensions.events.GroupIndexedListener;
import com.google.gerrit.index.Index;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.server.account.GroupCache;
import com.google.gerrit.server.group.InternalGroup;
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 GroupIndexerImpl implements GroupIndexer {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
public interface Factory {
GroupIndexerImpl create(GroupIndexCollection indexes);
GroupIndexerImpl create(@Nullable GroupIndex index);
}
private final GroupCache groupCache;
private final PluginSetContext<GroupIndexedListener> indexedListener;
private final StalenessChecker stalenessChecker;
@Nullable private final GroupIndexCollection indexes;
@Nullable private final GroupIndex index;
@AssistedInject
GroupIndexerImpl(
GroupCache groupCache,
PluginSetContext<GroupIndexedListener> indexedListener,
StalenessChecker stalenessChecker,
@Assisted GroupIndexCollection indexes) {
this.groupCache = groupCache;
this.indexedListener = indexedListener;
this.stalenessChecker = stalenessChecker;
this.indexes = indexes;
this.index = null;
}
@AssistedInject
GroupIndexerImpl(
GroupCache groupCache,
PluginSetContext<GroupIndexedListener> indexedListener,
StalenessChecker stalenessChecker,
@Assisted @Nullable GroupIndex index) {
this.groupCache = groupCache;
this.indexedListener = indexedListener;
this.stalenessChecker = stalenessChecker;
this.indexes = null;
this.index = index;
}
@Override
public void index(AccountGroup.UUID uuid) {
// Evict the cache to get an up-to-date value for sure.
groupCache.evict(uuid);
Optional<InternalGroup> internalGroup = groupCache.get(uuid);
if (internalGroup.isPresent()) {
logger.atFine().log("Replace group %s in index", uuid.get());
} else {
logger.atFine().log("Delete group %s from index", uuid.get());
}
for (Index<AccountGroup.UUID, InternalGroup> i : getWriteIndexes()) {
if (internalGroup.isPresent()) {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Replacing group %s in index version %d", uuid.get(), i.getSchema().getVersion())) {
i.replace(internalGroup.get());
}
} else {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Deleting group %s in index version %d", uuid.get(), i.getSchema().getVersion())) {
i.delete(uuid);
}
}
}
fireGroupIndexedEvent(uuid.get());
}
@Override
public boolean reindexIfStale(AccountGroup.UUID uuid) {
try {
if (stalenessChecker.isStale(uuid)) {
index(uuid);
return true;
}
} catch (IOException e) {
throw new StorageException(e);
}
return false;
}
private void fireGroupIndexedEvent(String uuid) {
indexedListener.runEach(l -> l.onGroupIndexed(uuid));
}
private Collection<GroupIndex> getWriteIndexes() {
if (indexes != null) {
return indexes.getWriteIndexes();
}
return index != null ? Collections.singleton(index) : ImmutableSet.of();
}
}