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// Copyright (C) 2010 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.query.change;
import static com.google.common.base.Preconditions.checkState;
import static com.google.gerrit.server.query.change.ChangeQueryBuilder.FIELD_LIMIT;
import com.google.common.collect.ImmutableListMultimap;
import com.google.gerrit.entities.Change;
import com.google.gerrit.extensions.common.PluginDefinedInfo;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.extensions.registration.Extension;
import com.google.gerrit.index.IndexConfig;
import com.google.gerrit.index.QueryOptions;
import com.google.gerrit.index.query.IndexPredicate;
import com.google.gerrit.index.query.Predicate;
import com.google.gerrit.index.query.QueryProcessor;
import com.google.gerrit.metrics.MetricMaker;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.DynamicOptions;
import com.google.gerrit.server.DynamicOptions.DynamicBean;
import com.google.gerrit.server.account.AccountLimits;
import com.google.gerrit.server.change.ChangePluginDefinedInfoFactory;
import com.google.gerrit.server.change.PluginDefinedAttributesFactories;
import com.google.gerrit.server.change.PluginDefinedInfosFactory;
import com.google.gerrit.server.index.change.ChangeIndexCollection;
import com.google.gerrit.server.index.change.ChangeIndexRewriter;
import com.google.gerrit.server.index.change.ChangeSchemaDefinitions;
import com.google.gerrit.server.index.change.IndexedChangeQuery;
import com.google.gerrit.server.notedb.Sequences;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Query processor for the change index.
*
* <p>Instances are one-time-use. Other singleton classes should inject a Provider rather than
* holding on to a single instance.
*/
public class ChangeQueryProcessor extends QueryProcessor<ChangeData>
implements DynamicOptions.BeanReceiver, DynamicOptions.BeanProvider, PluginDefinedInfosFactory {
private final Provider<CurrentUser> userProvider;
private final ChangeIsVisibleToPredicate.Factory changeIsVisibleToPredicateFactory;
private final Map<String, DynamicBean> dynamicBeans = new HashMap<>();
private final List<Extension<ChangePluginDefinedInfoFactory>>
changePluginDefinedInfoFactoriesByPlugin = new ArrayList<>();
private final Sequences sequences;
static {
// It is assumed that basic rewrites do not touch visibleto predicates.
checkState(
!ChangeIsVisibleToPredicate.class.isAssignableFrom(IndexPredicate.class),
"ChangeQueryProcessor assumes visibleto is not used by the index rewriter.");
}
@Inject
ChangeQueryProcessor(
Provider<CurrentUser> userProvider,
AccountLimits.Factory limitsFactory,
MetricMaker metricMaker,
IndexConfig indexConfig,
ChangeIndexCollection indexes,
ChangeIndexRewriter rewriter,
Sequences sequences,
ChangeIsVisibleToPredicate.Factory changeIsVisibleToPredicateFactory,
DynamicSet<ChangePluginDefinedInfoFactory> changePluginDefinedInfoFactories) {
super(
metricMaker,
ChangeSchemaDefinitions.INSTANCE,
indexConfig,
indexes,
rewriter,
FIELD_LIMIT,
() -> limitsFactory.create(userProvider.get()).getQueryLimit());
this.userProvider = userProvider;
this.changeIsVisibleToPredicateFactory = changeIsVisibleToPredicateFactory;
this.sequences = sequences;
changePluginDefinedInfoFactories
.entries()
.forEach(e -> changePluginDefinedInfoFactoriesByPlugin.add(e));
}
@Override
public ChangeQueryProcessor enforceVisibility(boolean enforce) {
super.enforceVisibility(enforce);
return this;
}
@Override
protected QueryOptions createOptions(
IndexConfig indexConfig, int start, int limit, Set<String> requestedFields) {
return IndexedChangeQuery.createOptions(indexConfig, start, limit, requestedFields);
}
@Override
public void setDynamicBean(String plugin, DynamicBean dynamicBean) {
dynamicBeans.put(plugin, dynamicBean);
}
@Override
public DynamicBean getDynamicBean(String plugin) {
return dynamicBeans.get(plugin);
}
public PluginDefinedInfosFactory getInfosFactory() {
return this::createPluginDefinedInfos;
}
@Override
public ImmutableListMultimap<Change.Id, PluginDefinedInfo> createPluginDefinedInfos(
Collection<ChangeData> cds) {
return PluginDefinedAttributesFactories.createAll(
cds, this, changePluginDefinedInfoFactoriesByPlugin.stream());
}
@Override
protected Predicate<ChangeData> enforceVisibility(Predicate<ChangeData> pred) {
return new AndChangeSource(
pred, changeIsVisibleToPredicateFactory.forUser(userProvider.get()), start);
}
@Override
protected String formatForLogging(ChangeData changeData) {
return changeData.getId().toString();
}
@Override
protected int getIndexSize() {
return sequences.lastChangeId();
}
@Override
protected int getBatchSize() {
return sequences.changeBatchSize();
}
}
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