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// Copyright 2015 The Bazel Authors. All rights reserved.
//
// 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.devtools.build.lib.query2;
import com.google.common.base.Preconditions;
import com.google.common.base.Predicate;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.events.ExtendedEventHandler;
import com.google.devtools.build.lib.packages.CachingPackageLocator;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
import com.google.devtools.build.lib.pkgcache.TargetPatternPreloader;
import com.google.devtools.build.lib.pkgcache.TargetProvider;
import com.google.devtools.build.lib.pkgcache.TransitivePackageLoader;
import com.google.devtools.build.lib.query2.engine.QueryEnvironment.QueryFunction;
import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Setting;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.skyframe.WalkableGraph.WalkableGraphFactory;
import java.util.List;
import java.util.Set;
import javax.annotation.Nullable;
/** A factory that creates instances of {@code AbstractBlazeQueryEnvironment<Target>}. */
public class QueryEnvironmentFactory {
/** Creates an appropriate {@link AbstractBlazeQueryEnvironment} based on the given options. */
public AbstractBlazeQueryEnvironment<Target> create(
TransitivePackageLoader transitivePackageLoader,
WalkableGraphFactory graphFactory,
TargetProvider targetProvider,
CachingPackageLocator cachingPackageLocator,
TargetPatternPreloader targetPatternPreloader,
PathFragment relativeWorkingDirectory,
boolean keepGoing,
boolean strictScope,
boolean orderedResults,
List<String> universeScope,
int loadingPhaseThreads,
Predicate<Label> labelFilter,
ExtendedEventHandler eventHandler,
Set<Setting> settings,
Iterable<QueryFunction> functions,
@Nullable PathPackageLocator packagePath,
boolean blockUniverseEvaluationErrors) {
Preconditions.checkNotNull(universeScope);
if (canUseSkyQuery(orderedResults, universeScope, packagePath, strictScope, labelFilter)) {
return new SkyQueryEnvironment(
keepGoing,
loadingPhaseThreads,
eventHandler,
settings,
functions,
relativeWorkingDirectory.getPathString(),
graphFactory,
universeScope,
packagePath,
blockUniverseEvaluationErrors);
} else {
return new BlazeQueryEnvironment(
transitivePackageLoader,
targetProvider,
cachingPackageLocator,
targetPatternPreloader,
relativeWorkingDirectory,
keepGoing,
strictScope,
loadingPhaseThreads,
labelFilter,
eventHandler,
settings,
functions);
}
}
protected static boolean canUseSkyQuery(
boolean orderedResults,
List<String> universeScope,
@Nullable PathPackageLocator packagePath,
boolean strictScope,
Predicate<Label> labelFilter) {
return !orderedResults
&& !universeScope.isEmpty()
&& packagePath != null
&& strictScope
&& labelFilter == Rule.ALL_LABELS;
}
}
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