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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.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.ActionKeyContext;
import com.google.devtools.build.lib.actions.Actions;
import com.google.devtools.build.lib.actions.Actions.GeneratingActions;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactFactory;
import com.google.devtools.build.lib.actions.ArtifactRoot;
import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoCollection;
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.cmdline.RepositoryName;
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 {
private final ActionKeyContext actionKeyContext;
// Supplier only because the artifact factory has not yet been created at constructor time.
private final Supplier<ArtifactFactory> artifactFactory;
private final ImmutableMap<BuildInfoKey, BuildInfoFactory> buildInfoFactories;
BuildInfoCollectionFunction(
ActionKeyContext actionKeyContext,
Supplier<ArtifactFactory> artifactFactory,
ImmutableMap<BuildInfoKey, BuildInfoFactory> buildInfoFactories) {
this.actionKeyContext = actionKeyContext;
this.artifactFactory = artifactFactory;
this.buildInfoFactories = buildInfoFactories;
}
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws InterruptedException {
final BuildInfoKeyAndConfig keyAndConfig = (BuildInfoKeyAndConfig) skyKey.argument();
ImmutableSet<SkyKey> keysToRequest =
ImmutableSet.of(
WorkspaceStatusValue.BUILD_INFO_KEY,
WorkspaceNameValue.key(),
keyAndConfig.getConfigKey());
Map<SkyKey, SkyValue> result = env.getValues(keysToRequest);
if (env.valuesMissing()) {
return null;
}
WorkspaceStatusValue infoArtifactValue =
(WorkspaceStatusValue) result.get(WorkspaceStatusValue.BUILD_INFO_KEY);
WorkspaceNameValue nameValue = (WorkspaceNameValue) result.get(WorkspaceNameValue.key());
RepositoryName repositoryName = RepositoryName.createFromValidStrippedName(
nameValue.getName());
final ArtifactFactory factory = artifactFactory.get();
BuildInfoContext context =
new BuildInfoContext() {
@Override
public Artifact getBuildInfoArtifact(
PathFragment rootRelativePath, ArtifactRoot root, BuildInfoType type) {
return type == BuildInfoType.NO_REBUILD
? factory.getConstantMetadataArtifact(rootRelativePath, root, keyAndConfig)
: factory.getDerivedArtifact(rootRelativePath, root, keyAndConfig);
}
};
BuildInfoCollection collection =
buildInfoFactories
.get(keyAndConfig.getInfoKey())
.create(
context,
((BuildConfigurationValue) result.get(keyAndConfig.getConfigKey()))
.getConfiguration(),
infoArtifactValue.getStableArtifact(),
infoArtifactValue.getVolatileArtifact(),
repositoryName);
GeneratingActions generatingActions;
try {
generatingActions =
Actions.filterSharedActionsAndThrowActionConflict(
actionKeyContext, collection.getActions());
} catch (ActionConflictException e) {
throw new IllegalStateException("Action conflicts not expected in build info: " + skyKey, e);
}
return new BuildInfoCollectionValue(collection, generatingActions);
}
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
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