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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.Predicate;
import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.actions.ActionLookupData;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactSkyKey;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.pkgcache.PackageProvider;
import com.google.devtools.build.lib.skyframe.TargetCompletionValue.TargetCompletionKey;
import com.google.devtools.build.lib.skyframe.TestCompletionValue.TestCompletionKey;
import com.google.devtools.build.skyframe.CycleInfo;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
/**
* Reports cycles between Actions and Artifacts. These indicates cycles within a rule.
*/
public class ActionArtifactCycleReporter extends AbstractLabelCycleReporter {
@SuppressWarnings("unchecked")
private static final Predicate<SkyKey> IS_ARTIFACT_OR_ACTION_SKY_KEY =
Predicates.or(
SkyFunctions.isSkyFunction(Artifact.ARTIFACT),
SkyFunctions.isSkyFunction(SkyFunctions.ACTION_EXECUTION),
SkyFunctions.isSkyFunction(SkyFunctions.TARGET_COMPLETION),
SkyFunctions.isSkyFunction(SkyFunctions.TEST_COMPLETION));
ActionArtifactCycleReporter(PackageProvider packageProvider) {
super(packageProvider);
}
@Override
protected String prettyPrint(SkyKey key) {
return prettyPrint(key.functionName(), key.argument());
}
private static String prettyPrintArtifact(Artifact artifact) {
return "file: " + artifact.getRootRelativePathString();
}
private static String prettyPrint(SkyFunctionName skyFunctionName, Object arg) {
if (arg instanceof ArtifactSkyKey) {
return prettyPrintArtifact(((ArtifactSkyKey) arg).getArtifact());
} else if (arg instanceof Artifact) {
return prettyPrintArtifact(((Artifact) arg));
} else if (arg instanceof ActionLookupData) {
return "action from: " + arg;
} else if (arg instanceof TargetCompletionKey
&& skyFunctionName.equals(SkyFunctions.TARGET_COMPLETION)) {
return "configured target: " + ((TargetCompletionKey) arg).configuredTargetKey().getLabel();
} else if (arg instanceof TestCompletionKey
&& skyFunctionName.equals(SkyFunctions.TEST_COMPLETION)) {
return "test target: " + ((TestCompletionKey) arg).configuredTargetKey().getLabel();
}
throw new IllegalStateException(
"Argument is not Action, TargetCompletion, TestCompletion or ArtifactSkyKey: " + arg);
}
@Override
protected Label getLabel(SkyKey key) {
Object arg = key.argument();
if (arg instanceof ArtifactSkyKey) {
return ((ArtifactSkyKey) arg).getArtifact().getOwner();
} else if (arg instanceof Artifact) {
return ((Artifact) arg).getOwner();
} else if (arg instanceof ActionLookupData) {
return ((ActionLookupData) arg).getLabelForErrors();
} else if (arg instanceof TargetCompletionKey
&& key.functionName().equals(SkyFunctions.TARGET_COMPLETION)) {
return ((TargetCompletionKey) arg).configuredTargetKey().getLabel();
} else if (arg instanceof TestCompletionKey
&& key.functionName().equals(SkyFunctions.TEST_COMPLETION)) {
return ((TestCompletionKey) arg).configuredTargetKey().getLabel();
}
throw new IllegalStateException(
"Argument is not Action, TargetCompletion, TestCompletion or ArtifactSkyKey: " + arg);
}
@Override
protected boolean canReportCycle(SkyKey topLevelKey, CycleInfo cycleInfo) {
return IS_ARTIFACT_OR_ACTION_SKY_KEY.apply(topLevelKey)
&& Iterables.all(cycleInfo.getCycle(), IS_ARTIFACT_OR_ACTION_SKY_KEY);
}
}
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