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// 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.account;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.cache.CacheModule;
import com.google.gerrit.server.group.Groups;
import com.google.gerrit.server.group.InternalGroup;
import com.google.gerrit.server.index.group.GroupIndexCollection;
import com.google.gerrit.server.index.group.GroupIndexer;
import com.google.gerrit.server.query.group.InternalGroupQuery;
import com.google.gwtorm.server.SchemaFactory;
import com.google.inject.Inject;
import com.google.inject.Module;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import com.google.inject.TypeLiteral;
import com.google.inject.name.Named;
import java.io.IOException;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.function.BooleanSupplier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** Tracks group objects in memory for efficient access. */
@Singleton
public class GroupCacheImpl implements GroupCache {
private static final Logger log = LoggerFactory.getLogger(GroupCacheImpl.class);
private static final String BYID_NAME = "groups";
private static final String BYNAME_NAME = "groups_byname";
private static final String BYUUID_NAME = "groups_byuuid";
public static Module module() {
return new CacheModule() {
@Override
protected void configure() {
cache(BYID_NAME, AccountGroup.Id.class, new TypeLiteral<Optional<InternalGroup>>() {})
.loader(ByIdLoader.class);
cache(BYNAME_NAME, String.class, new TypeLiteral<Optional<InternalGroup>>() {})
.loader(ByNameLoader.class);
cache(BYUUID_NAME, String.class, new TypeLiteral<Optional<InternalGroup>>() {})
.loader(ByUUIDLoader.class);
bind(GroupCacheImpl.class);
bind(GroupCache.class).to(GroupCacheImpl.class);
}
};
}
private final LoadingCache<AccountGroup.Id, Optional<InternalGroup>> byId;
private final LoadingCache<String, Optional<InternalGroup>> byName;
private final LoadingCache<String, Optional<InternalGroup>> byUUID;
private final Provider<GroupIndexer> indexer;
@Inject
GroupCacheImpl(
@Named(BYID_NAME) LoadingCache<AccountGroup.Id, Optional<InternalGroup>> byId,
@Named(BYNAME_NAME) LoadingCache<String, Optional<InternalGroup>> byName,
@Named(BYUUID_NAME) LoadingCache<String, Optional<InternalGroup>> byUUID,
Provider<GroupIndexer> indexer) {
this.byId = byId;
this.byName = byName;
this.byUUID = byUUID;
this.indexer = indexer;
}
@Override
public Optional<InternalGroup> get(AccountGroup.Id groupId) {
try {
return byId.get(groupId);
} catch (ExecutionException e) {
log.warn("Cannot load group {}", groupId, e);
return Optional.empty();
}
}
@Override
public void evict(
AccountGroup.UUID groupUuid, AccountGroup.Id groupId, AccountGroup.NameKey groupName)
throws IOException {
if (groupId != null) {
byId.invalidate(groupId);
}
if (groupName != null) {
byName.invalidate(groupName.get());
}
if (groupUuid != null) {
byUUID.invalidate(groupUuid.get());
}
indexer.get().index(groupUuid);
}
@Override
public void evictAfterRename(AccountGroup.NameKey oldName) throws IOException {
if (oldName != null) {
byName.invalidate(oldName.get());
}
}
@Override
public Optional<InternalGroup> get(AccountGroup.NameKey name) {
if (name == null) {
return Optional.empty();
}
try {
return byName.get(name.get());
} catch (ExecutionException e) {
log.warn("Cannot look up group {} by name", name.get(), e);
return Optional.empty();
}
}
@Override
public Optional<InternalGroup> get(AccountGroup.UUID groupUuid) {
if (groupUuid == null) {
return Optional.empty();
}
try {
return byUUID.get(groupUuid.get());
} catch (ExecutionException e) {
log.warn("Cannot look up group {} by uuid", groupUuid.get(), e);
return Optional.empty();
}
}
@Override
public void onCreateGroup(AccountGroup group) throws IOException {
indexer.get().index(group.getGroupUUID());
}
static class ByIdLoader extends CacheLoader<AccountGroup.Id, Optional<InternalGroup>> {
private final SchemaFactory<ReviewDb> schema;
private final Groups groups;
private final BooleanSupplier hasGroupIndex;
private final Provider<InternalGroupQuery> groupQueryProvider;
@Inject
ByIdLoader(
SchemaFactory<ReviewDb> schema,
Groups groups,
GroupIndexCollection groupIndexCollection,
Provider<InternalGroupQuery> groupQueryProvider) {
this.schema = schema;
this.groups = groups;
hasGroupIndex = () -> groupIndexCollection.getSearchIndex() != null;
this.groupQueryProvider = groupQueryProvider;
}
@Override
public Optional<InternalGroup> load(AccountGroup.Id key) throws Exception {
if (hasGroupIndex.getAsBoolean()) {
return groupQueryProvider.get().byId(key);
}
try (ReviewDb db = schema.open()) {
return groups.getGroup(db, key);
}
}
}
static class ByNameLoader extends CacheLoader<String, Optional<InternalGroup>> {
private final Provider<InternalGroupQuery> groupQueryProvider;
@Inject
ByNameLoader(Provider<InternalGroupQuery> groupQueryProvider) {
this.groupQueryProvider = groupQueryProvider;
}
@Override
public Optional<InternalGroup> load(String name) throws Exception {
return groupQueryProvider.get().byName(new AccountGroup.NameKey(name));
}
}
static class ByUUIDLoader extends CacheLoader<String, Optional<InternalGroup>> {
private final SchemaFactory<ReviewDb> schema;
private final Groups groups;
@Inject
ByUUIDLoader(SchemaFactory<ReviewDb> sf, Groups groups) {
schema = sf;
this.groups = groups;
}
@Override
public Optional<InternalGroup> load(String uuid) throws Exception {
try (ReviewDb db = schema.open()) {
return groups.getGroup(db, new AccountGroup.UUID(uuid));
}
}
}
}
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