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// Copyright 2018 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.Preconditions;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.cmdline.RepositoryName;
import com.google.devtools.build.lib.events.ExtendedEventHandler;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.Root;
import com.google.devtools.build.lib.vfs.RootedPath;
import com.google.devtools.build.skyframe.WalkableGraph;
import java.util.LinkedHashSet;
import java.util.List;
/** Looks up {@link RecursivePkgValue}s of given roots in a {@link WalkableGraph}. */
public class RecursivePkgValueRootPackageExtractor implements RootPackageExtractor {
public Iterable<PathFragment> getPackagesFromRoots(
WalkableGraph graph,
List<Root> roots,
ExtendedEventHandler eventHandler,
RepositoryName repository,
PathFragment directory,
ImmutableSet<PathFragment> blacklistedSubdirectories,
ImmutableSet<PathFragment> excludedSubdirectories)
throws InterruptedException {
LinkedHashSet<PathFragment> packageNames = new LinkedHashSet<>();
for (Root root : roots) {
// Note: no need to check if lookup == null because it will never be null.
// {@link RecursivePkgFunction} handles all errors in a keep_going build.
// In a nokeep_going build, we would never reach this part of the code.
RecursivePkgValue lookup =
(RecursivePkgValue)
graph.getValue(
RecursivePkgValue.key(
repository,
RootedPath.toRootedPath(root, directory),
blacklistedSubdirectories));
Preconditions.checkState(
lookup != null,
"Root %s in repository %s could not be found in the graph.",
root.asPath(),
repository.getName());
for (String packageName : lookup.getPackages()) {
// TODO(bazel-team): Make RecursivePkgValue return NestedSet<PathFragment> so this transform
// is unnecessary.
PathFragment packageNamePathFragment = PathFragment.create(packageName);
if (!Iterables.any(
excludedSubdirectories,
excludedSubdirectory -> packageNamePathFragment.startsWith(excludedSubdirectory))) {
packageNames.add(packageNamePathFragment);
}
}
}
return packageNames;
}
}
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