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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 static com.google.devtools.build.lib.skyframe.ArtifactConflictFinder.ACTION_CONFLICTS;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.ActionAnalysisMetadata;
import com.google.devtools.build.lib.actions.ActionLookupKey;
import com.google.devtools.build.lib.actions.ActionLookupValue;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.bugreport.BugReport;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.compacthashset.CompactHashSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.skyframe.ArtifactConflictFinder.ConflictException;
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 java.util.Set;
import java.util.stream.Stream;
import javax.annotation.Nullable;
/** Check all transitive actions of an {@link ActionLookupValue} for action conflicts. */
public class ActionLookupConflictFindingFunction implements SkyFunction {
ActionLookupConflictFindingFunction() {}
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env)
throws SkyFunctionException, InterruptedException {
ImmutableMap<ActionAnalysisMetadata, ConflictException> actionConflicts =
ACTION_CONFLICTS.get(env);
ActionLookupKey lookupKey = ((ActionLookupConflictFindingValue.Key) skyKey).argument();
ActionLookupValue alValue = (ActionLookupValue) env.getValue(lookupKey);
if (env.valuesMissing()) {
if (!CoverageReportValue.COVERAGE_REPORT_KEY.equals(lookupKey)) {
BugReport.sendBugReport(
new IllegalStateException(
"Unexpected missing action lookup value during action conflict finding: "
+ skyKey));
}
return null;
}
Set<ActionLookupConflictFindingValue.Key> depKeys = CompactHashSet.create();
for (ActionAnalysisMetadata action : alValue.getActions()) {
if (actionConflicts.containsKey(action)) {
throw new ActionConflictFunctionException(actionConflicts.get(action));
}
convertArtifacts(action.getInputs()).forEach(depKeys::add);
}
// Avoid silly cycles.
depKeys.remove(skyKey);
env.getValues(depKeys);
return env.valuesMissing() ? null : ActionLookupConflictFindingValue.INSTANCE;
}
static Stream<ActionLookupConflictFindingValue.Key> convertArtifacts(
NestedSet<Artifact> artifacts) {
return artifacts.toList().stream()
.filter(a -> !a.isSourceArtifact())
.map(ActionLookupConflictFindingValue::key);
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return Label.print(((ConfiguredTargetKey) skyKey.argument()).getLabel());
}
static class ActionConflictFunctionException extends SkyFunctionException {
ActionConflictFunctionException(ConflictException e) {
super(e, Transience.PERSISTENT);
}
}
}