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/*
* Copyright 2018 the original author or authors.
*
* 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 org.gradle.api.internal.artifacts.transform;
import com.google.common.base.Equivalence;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Maps;
import org.gradle.api.Action;
import org.gradle.api.artifacts.component.ComponentArtifactIdentifier;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.ResolvableArtifact;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.ResolvedArtifactSet;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
public class DefaultTransformationNodeRegistry implements TransformationNodeRegistry {
private final Map transformations = Maps.newConcurrentMap();
@Override
public Collection getOrCreate(ResolvedArtifactSet artifactSet, Transformation transformation, ExecutionGraphDependenciesResolver dependenciesResolver) {
final List> transformationChain = unpackTransformation(transformation);
final ImmutableList.Builder builder = ImmutableList.builder();
Function nodeCreator = artifact -> {
return getOrCreateInternal(artifact, transformationChain, dependenciesResolver);
};
collectTransformNodes(artifactSet, builder, nodeCreator);
return builder.build();
}
@Override
public Optional getIfExecuted(ComponentArtifactIdentifier artifactId, Transformation transformation) {
List> transformationChain = unpackTransformation(transformation);
ArtifactTransformKey transformKey = new ArtifactTransformKey(artifactId, transformationChain);
TransformationNode node = transformations.get(transformKey);
if (node != null && node.isExecuted()) {
return Optional.of(node);
}
return Optional.empty();
}
private void collectTransformNodes(ResolvedArtifactSet artifactSet, ImmutableList.Builder builder, Function nodeCreator) {
artifactSet.visitLocalArtifacts(new ResolvedArtifactSet.LocalArtifactVisitor() {
@Override
public void visitArtifact(ResolvableArtifact artifact) {
TransformationNode transformationNode = nodeCreator.apply(artifact);
builder.add(transformationNode);
}
});
}
private TransformationNode getOrCreateInternal(ResolvableArtifact artifact, List> transformationChain, ExecutionGraphDependenciesResolver dependenciesResolver) {
ArtifactTransformKey key = new ArtifactTransformKey(artifact.getId(), transformationChain);
TransformationNode transformationNode = transformations.get(key);
if (transformationNode == null) {
if (transformationChain.size() == 1) {
transformationNode = TransformationNode.initial(transformationChain.get(0).get(), artifact, dependenciesResolver);
} else {
TransformationNode previous = getOrCreateInternal(artifact, transformationChain.subList(0, transformationChain.size() - 1), dependenciesResolver);
transformationNode = TransformationNode.chained(transformationChain.get(transformationChain.size() - 1).get(), previous, dependenciesResolver);
}
transformations.put(key, transformationNode);
}
return transformationNode;
}
private static List> unpackTransformation(Transformation transformation) {
final ImmutableList.Builder> builder = ImmutableList.builder();
transformation.visitTransformationSteps(new Action() {
@Override
public void execute(TransformationStep transformation) {
builder.add(TransformationStep.FOR_SCHEDULING.wrap(transformation));
}
});
return builder.build();
}
private static class ArtifactTransformKey {
private final ComponentArtifactIdentifier artifactIdentifier;
private final List> transformations;
private ArtifactTransformKey(ComponentArtifactIdentifier artifactIdentifier, List> transformations) {
this.artifactIdentifier = artifactIdentifier;
this.transformations = transformations;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ArtifactTransformKey that = (ArtifactTransformKey) o;
if (!artifactIdentifier.equals(that.artifactIdentifier)) {
return false;
}
return transformations.equals(that.transformations);
}
@Override
public int hashCode() {
int result = artifactIdentifier.hashCode();
result = 31 * result + transformations.hashCode();
return result;
}
}
}