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ResolvedArtifactsGraphVisitor.java
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ResolvedArtifactsGraphVisitor.java
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/*
* Copyright 2015 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.ivyservice.resolveengine.artifact;
import com.google.common.collect.Maps;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.specs.ExcludeSpec;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphEdge;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphNode;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphSelector;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphVisitor;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.RootGraphNode;
import org.gradle.api.internal.attributes.ImmutableAttributes;
import org.gradle.internal.component.local.model.LocalFileDependencyMetadata;
import org.gradle.internal.component.model.ComponentArtifactMetadata;
import org.gradle.internal.component.model.ComponentResolveMetadata;
import org.gradle.internal.component.model.ConfigurationMetadata;
import org.gradle.internal.resolve.resolver.ArtifactSelector;
import java.util.List;
import java.util.Map;
/**
* Adapts a {@link DependencyArtifactsVisitor} to a {@link DependencyGraphVisitor}. Calculates the artifacts contributed by each edge in the graph and forwards the results to the artifact visitor.
*/
public class ResolvedArtifactsGraphVisitor implements DependencyGraphVisitor {
private int nextId;
private final Map<Long, ArtifactsForNode> artifactsByNodeId = Maps.newHashMap();
private final ArtifactSelector artifactSelector;
private final DependencyArtifactsVisitor artifactResults;
public ResolvedArtifactsGraphVisitor(DependencyArtifactsVisitor artifactsBuilder, ArtifactSelector artifactSelector) {
this.artifactResults = artifactsBuilder;
this.artifactSelector = artifactSelector;
}
@Override
public void start(RootGraphNode root) {
artifactResults.startArtifacts(root);
}
@Override
public void visitNode(DependencyGraphNode node) {
artifactResults.visitNode(node);
}
@Override
public void visitSelector(DependencyGraphSelector selector) {
}
@Override
public void visitEdges(DependencyGraphNode node) {
for (DependencyGraphEdge dependency : node.getIncomingEdges()) {
if (dependency.contributesArtifacts()) {
DependencyGraphNode parent = dependency.getFrom();
ArtifactsForNode artifacts = getArtifacts(dependency, node);
artifactResults.visitArtifacts(parent, node, artifacts.artifactSetId, artifacts.artifactSet);
}
}
for (LocalFileDependencyMetadata fileDependency : node.getOutgoingFileEdges()) {
int id = nextId++;
artifactResults.visitArtifacts(node, fileDependency, id, artifactSelector.resolveArtifacts(fileDependency));
}
}
@Override
public void finish(DependencyGraphNode root) {
artifactResults.finishArtifacts();
artifactsByNodeId.clear();
}
private ArtifactsForNode getArtifacts(DependencyGraphEdge dependency, DependencyGraphNode toConfiguration) {
ConfigurationMetadata targetConfiguration = toConfiguration.getMetadata();
ComponentResolveMetadata component = toConfiguration.getOwner().getMetadata();
ImmutableAttributes overriddenAttributes = dependency.getAttributes();
List<? extends ComponentArtifactMetadata> artifacts = dependency.getArtifacts(targetConfiguration);
if (!artifacts.isEmpty()) {
int id = nextId++;
ArtifactSet artifactSet = artifactSelector.resolveArtifacts(component, artifacts, overriddenAttributes);
return new ArtifactsForNode(id, artifactSet);
}
ArtifactsForNode configurationArtifactSet = artifactsByNodeId.get(toConfiguration.getNodeId());
if (configurationArtifactSet == null) {
ExcludeSpec exclusions = dependency.getExclusions();
ArtifactSet nodeArtifacts = artifactSelector.resolveArtifacts(component, targetConfiguration, exclusions, overriddenAttributes);
int id = nextId++;
configurationArtifactSet = new ArtifactsForNode(id, nodeArtifacts);
// Only share an ArtifactSet if the artifacts are not filtered by the dependency
if (!exclusions.mayExcludeArtifacts()) {
artifactsByNodeId.put(toConfiguration.getNodeId(), configurationArtifactSet);
}
}
return configurationArtifactSet;
}
private static class ArtifactsForNode {
private final int artifactSetId;
private final ArtifactSet artifactSet;
ArtifactsForNode(int artifactSetId, ArtifactSet artifactSet) {
this.artifactSetId = artifactSetId;
this.artifactSet = artifactSet;
}
}
}