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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.skyframe;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.analysis.BlazeDirectories;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.cmdline.RepositoryName;
import com.google.devtools.build.lib.packages.NoSuchPackageException;
import com.google.devtools.build.lib.pkgcache.FilteringPolicy;
import com.google.devtools.build.lib.skyframe.PrepareDepsOfTargetsUnderDirectoryValue.PrepareDepsOfTargetsUnderDirectoryKey;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.RootedPath;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import javax.annotation.Nullable;
/**
* Ensures the graph contains the targets in the directory's package, if any, and in the
* non-excluded packages in its subdirectories, and all those targets' transitive dependencies,
* after a successful evaluation.
*/
public class PrepareDepsOfTargetsUnderDirectoryFunction implements SkyFunction {
private final BlazeDirectories directories;
PrepareDepsOfTargetsUnderDirectoryFunction(BlazeDirectories directories) {
this.directories = directories;
}
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws InterruptedException {
PrepareDepsOfTargetsUnderDirectoryKey argument =
(PrepareDepsOfTargetsUnderDirectoryKey) skyKey.argument();
final FilteringPolicy filteringPolicy = argument.getFilteringPolicy();
RecursivePkgKey recursivePkgKey = argument.getRecursivePkgKey();
ProcessPackageDirectory processPackageDirectory =
new ProcessPackageDirectory(
directories,
new ProcessPackageDirectory.SkyKeyTransformer() {
@Override
public SkyKey makeSkyKey(
RepositoryName repository,
RootedPath subdirectory,
ImmutableSet<PathFragment> excludedSubdirectoriesBeneathSubdirectory) {
return PrepareDepsOfTargetsUnderDirectoryValue.key(
repository,
subdirectory,
excludedSubdirectoriesBeneathSubdirectory,
filteringPolicy);
}
});
ProcessPackageDirectoryResult packageExistenceAndSubdirDeps =
processPackageDirectory.getPackageExistenceAndSubdirDeps(
recursivePkgKey.getRootedPath(),
recursivePkgKey.getRepository(),
env,
recursivePkgKey.getExcludedPaths());
if (env.valuesMissing()) {
return null;
}
Iterable<SkyKey> keysToRequest = packageExistenceAndSubdirDeps.getChildDeps();
if (packageExistenceAndSubdirDeps.packageExists()) {
keysToRequest =
Iterables.concat(
ImmutableList.of(
CollectTargetsInPackageValue.key(
PackageIdentifier.create(
recursivePkgKey.getRepository(),
recursivePkgKey.getRootedPath().getRootRelativePath()),
filteringPolicy)),
keysToRequest);
}
env.getValuesOrThrow(keysToRequest, NoSuchPackageException.class);
if (env.valuesMissing()) {
return null;
}
return PrepareDepsOfTargetsUnderDirectoryValue.INSTANCE;
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
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