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// Copyright 2014 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.skyframe;
import com.google.common.base.Supplier;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactFactory;
import com.google.devtools.build.lib.actions.Root;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoContext;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoKey;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoType;
import com.google.devtools.build.lib.skyframe.BuildInfoCollectionValue.BuildInfoKeyAndConfig;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.util.Map;
/**
* Creates a {@link BuildInfoCollectionValue}. Only depends on the unique
* {@link WorkspaceStatusValue} and the constant {@link PrecomputedValue#BUILD_INFO_FACTORIES}
* injected value.
*/
public class BuildInfoCollectionFunction implements SkyFunction {
// Supplier only because the artifact factory has not yet been created at constructor time.
private final Supplier<ArtifactFactory> artifactFactory;
private final Root buildDataDirectory;
BuildInfoCollectionFunction(Supplier<ArtifactFactory> artifactFactory,
Root buildDataDirectory) {
this.artifactFactory = artifactFactory;
this.buildDataDirectory = buildDataDirectory;
}
@Override
public SkyValue compute(SkyKey skyKey, Environment env) {
final BuildInfoKeyAndConfig keyAndConfig = (BuildInfoKeyAndConfig) skyKey.argument();
WorkspaceStatusValue infoArtifactValue =
(WorkspaceStatusValue) env.getValue(WorkspaceStatusValue.SKY_KEY);
if (infoArtifactValue == null) {
return null;
}
Map<BuildInfoKey, BuildInfoFactory> buildInfoFactories =
PrecomputedValue.BUILD_INFO_FACTORIES.get(env);
if (buildInfoFactories == null) {
return null;
}
final ArtifactFactory factory = artifactFactory.get();
BuildInfoContext context = new BuildInfoContext() {
@Override
public Artifact getBuildInfoArtifact(PathFragment rootRelativePath, Root root,
BuildInfoType type) {
return type == BuildInfoType.NO_REBUILD
? factory.getConstantMetadataArtifact(rootRelativePath, root, keyAndConfig)
: factory.getDerivedArtifact(rootRelativePath, root, keyAndConfig);
}
@Override
public Root getBuildDataDirectory() {
return buildDataDirectory;
}
};
return new BuildInfoCollectionValue(buildInfoFactories.get(
keyAndConfig.getInfoKey()).create(context, keyAndConfig.getConfig(),
infoArtifactValue.getStableArtifact(), infoArtifactValue.getVolatileArtifact()));
}
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
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