blob: 380fec713da3a8b8fcdeef3377350a9526711234 [file] [log] [blame]
// Copyright 2016 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.Function;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.packages.NoSuchPackageException;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.pkgcache.TargetPatternResolverUtil;
import com.google.devtools.build.skyframe.GraphTraversingHelper;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import javax.annotation.Nullable;
/**
* Declares a dependency on all targets in a package, to ensure those targets are in the graph. Does
* no error-checking on the package id provided, so callers should have already verified that there
* is a package with this id.
*/
class CollectTargetsInPackageFunction implements SkyFunction {
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env)
throws SkyFunctionException, InterruptedException {
CollectTargetsInPackageValue.CollectTargetsInPackageKey argument =
(CollectTargetsInPackageValue.CollectTargetsInPackageKey) skyKey.argument();
PackageIdentifier packageId = argument.getPackageId();
PackageValue packageValue;
try {
packageValue =
(PackageValue)
env.getValueOrThrow(PackageValue.key(packageId), NoSuchPackageException.class);
} catch (NoSuchPackageException e) {
// If the argument is a package that doesn't exist, the aggregator function can return
// a success value immediately.
return CollectTargetsInPackageValue.INSTANCE;
}
if (env.valuesMissing()) {
return null;
}
Package pkg = packageValue.getPackage();
if (pkg.containsErrors()) {
env.getListener()
.handle(
Event.error(
"package contains errors: " + packageId.getPackageFragment().getPathString()));
}
return GraphTraversingHelper.declareDependenciesAndCheckIfValuesMissing(
env,
Iterables.transform(
TargetPatternResolverUtil.resolvePackageTargets(pkg, argument.getFilteringPolicy()),
TO_TRANSITIVE_TRAVERSAL_KEY))
? null
: CollectTargetsInPackageValue.INSTANCE;
}
private static final Function<Target, SkyKey> TO_TRANSITIVE_TRAVERSAL_KEY =
new Function<Target, SkyKey>() {
@Override
public SkyKey apply(Target target) {
return TransitiveTraversalValue.key(target.getLabel());
}
};
}