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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.analysis.configuredtargets;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.FilesetTraversalParams;
import com.google.devtools.build.lib.analysis.TargetContext;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.fileset.FilesetProvider;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.packages.OutputFile;
import com.google.devtools.build.lib.packages.PackageSpecification.PackageGroupContents;
import com.google.devtools.build.lib.skyframe.BuildConfigurationValue;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
/**
* A configured target for output files generated by {@code Fileset} rules. They are almost the same
* thing as output files except that they implement {@link FilesetProvider} so that {@code Fileset}
* can figure out the link tree behind them.
*
* <p>In an ideal world, this would not be needed: Filesets would depend on other Filesets and not
* their output directories. However, sometimes a Fileset depends on the output directory of another
* Fileset. Thus, we need this hack.
*/
@AutoCodec
public final class FilesetOutputConfiguredTarget extends OutputFileConfiguredTarget
implements FilesetProvider {
private final ImmutableList<FilesetTraversalParams> filesetTraversals;
public FilesetOutputConfiguredTarget(
TargetContext targetContext,
OutputFile outputFile,
TransitiveInfoCollection generatingRule,
Artifact outputArtifact,
ImmutableList<FilesetTraversalParams> traversals) {
this(
targetContext.getLabel(),
targetContext.getConfigurationKey(),
targetContext.getVisibility(),
generatingRule,
outputArtifact,
traversals);
Preconditions.checkState(
outputFile.getLabel().equals(targetContext.getLabel()),
"mismatch: %s %s",
outputFile,
targetContext);
}
@AutoCodec.VisibleForSerialization
@AutoCodec.Instantiator
FilesetOutputConfiguredTarget(
Label label,
BuildConfigurationValue.Key configurationKey,
NestedSet<PackageGroupContents> visibility,
TransitiveInfoCollection generatingRule,
Artifact artifact,
ImmutableList<FilesetTraversalParams> traversals) {
super(label, configurationKey, visibility, artifact, generatingRule);
FilesetProvider provider = generatingRule.getProvider(FilesetProvider.class);
Preconditions.checkArgument(provider != null);
filesetTraversals = traversals;
}
@Override
public ImmutableList<FilesetTraversalParams> getTraversals() {
return filesetTraversals;
}
}
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