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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.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.ActionAnalysisMetadata;
import com.google.devtools.build.lib.actions.Actions.GeneratingActions;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.BasicActionLookupValue;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization;
import com.google.devtools.build.skyframe.SkyKey;
import javax.annotation.Nullable;
/** A non-rule configured target in the context of a Skyframe graph. */
@Immutable
@ThreadSafe
// Reached via OutputFileConfiguredTarget.
@AutoCodec(explicitlyAllowClass = RuleConfiguredTarget.class)
@VisibleForTesting
public final class NonRuleConfiguredTargetValue extends BasicActionLookupValue
implements ConfiguredTargetValue {
// These variables are only non-final because they may be clear()ed to save memory.
// configuredTarget is null only after it is cleared.
@Nullable private ConfiguredTarget configuredTarget;
// May be null either after clearing or because transitive packages are not tracked.
@Nullable private NestedSet<Package> transitivePackagesForPackageRootResolution;
@AutoCodec.Instantiator
@VisibleForSerialization
NonRuleConfiguredTargetValue(
ImmutableList<ActionAnalysisMetadata> actions,
ImmutableMap<Artifact, Integer> generatingActionIndex,
ConfiguredTarget configuredTarget) {
super(actions, generatingActionIndex);
this.configuredTarget = configuredTarget;
// Transitive packages are not serialized.
this.transitivePackagesForPackageRootResolution = null;
}
NonRuleConfiguredTargetValue(
ConfiguredTarget configuredTarget,
GeneratingActions generatingActions,
@Nullable NestedSet<Package> transitivePackagesForPackageRootResolution) {
super(generatingActions);
this.configuredTarget = Preconditions.checkNotNull(configuredTarget, generatingActions);
this.transitivePackagesForPackageRootResolution = transitivePackagesForPackageRootResolution;
}
@VisibleForTesting
@Override
public ConfiguredTarget getConfiguredTarget() {
Preconditions.checkNotNull(configuredTarget);
return configuredTarget;
}
@VisibleForTesting
@Override
public ImmutableList<ActionAnalysisMetadata> getActions() {
Preconditions.checkNotNull(configuredTarget, this);
return actions;
}
@Override
public NestedSet<Package> getTransitivePackagesForPackageRootResolution() {
return Preconditions.checkNotNull(transitivePackagesForPackageRootResolution);
}
@Override
public void clear(boolean clearEverything) {
Preconditions.checkNotNull(configuredTarget);
Preconditions.checkNotNull(transitivePackagesForPackageRootResolution);
if (clearEverything) {
configuredTarget = null;
}
transitivePackagesForPackageRootResolution = null;
}
/**
* Returns a label of NonRuleConfiguredTargetValue.
*/
@ThreadSafe
static Label extractLabel(SkyKey value) {
Object valueName = value.argument();
Preconditions.checkState(valueName instanceof ConfiguredTargetKey, valueName);
return ((ConfiguredTargetKey) valueName).getLabel();
}
@Override
public String toString() {
return getStringHelper().add("configuredTarget", configuredTarget).toString();
}
}
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