org.gradle.api.internalivyservice.resolveengine.graph.builder.PotentialEdge Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of gradle-api Show documentation
Show all versions of gradle-api Show documentation
Gradle 6.5 API redistribution.
/*
* 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.ivyservice.resolveengine.graph.builder;
import org.gradle.api.artifacts.ModuleVersionIdentifier;
import org.gradle.api.artifacts.component.ComponentIdentifier;
import org.gradle.api.artifacts.component.ModuleComponentIdentifier;
import org.gradle.api.artifacts.component.ModuleComponentSelector;
import org.gradle.api.internal.artifacts.DefaultModuleVersionIdentifier;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.specs.ExcludeSpec;
import org.gradle.internal.component.model.ComponentResolveMetadata;
import javax.annotation.Nullable;
/**
* This class wraps knowledge about a potential edge to a component. It's called potential,
* because when the edge is created we don't know if the target component exists, and, since
* the edge is created internally by the engine, we don't want to fail if the target component
* doesn't exist. This means that the edge would effectively be added if, and only if, the
* target component exists. Checking if it does exist is currently done by fetching metadata,
* but we could have a cheaper strategy (HEAD request, ...).
*/
class PotentialEdge {
final EdgeState edge;
final ModuleVersionIdentifier toModuleVersionId;
final ComponentResolveMetadata metadata;
final ComponentState component;
private PotentialEdge(EdgeState edge, ModuleVersionIdentifier toModuleVersionId, @Nullable ComponentResolveMetadata metadata, ComponentState component) {
this.edge = edge;
this.toModuleVersionId = toModuleVersionId;
this.metadata = metadata;
this.component = component;
}
static PotentialEdge of(ResolveState resolveState, NodeState from, ModuleComponentIdentifier toComponent, ModuleComponentSelector toSelector, ComponentIdentifier owner) {
return of(resolveState, from, toComponent, toSelector, owner, false, true);
}
static PotentialEdge of(ResolveState resolveState, NodeState from, ModuleComponentIdentifier toComponent, ModuleComponentSelector toSelector, ComponentIdentifier owner, boolean force, boolean transitive) {
DependencyState dependencyState = new DependencyState(new LenientPlatformDependencyMetadata(resolveState, from, toSelector, toComponent, owner, force || hasStrongOpinion(from), transitive), resolveState.getComponentSelectorConverter());
dependencyState = NodeState.maybeSubstitute(dependencyState, resolveState.getDependencySubstitutionApplicator());
ExcludeSpec exclusions = from.previousTraversalExclusions;
if (exclusions == null) {
exclusions = resolveState.getModuleExclusions().nothing();
}
EdgeState edge = new EdgeState(from, dependencyState, exclusions, resolveState);
edge.computeSelector();
ModuleVersionIdentifier toModuleVersionId = DefaultModuleVersionIdentifier.newId(toSelector.getModuleIdentifier(), toSelector.getVersion());
ComponentState version = resolveState.getModule(toSelector.getModuleIdentifier()).getVersion(toModuleVersionId, toComponent);
// We need to check if the target version exists. For this, we have to try to get metadata for the aligned version.
// If it's there, it means we can align, otherwise, we must NOT add the edge, or resolution would fail
ComponentResolveMetadata metadata = version.getMetadata();
return new PotentialEdge(edge, toModuleVersionId, metadata, version);
}
private static boolean hasStrongOpinion(NodeState node) {
for (EdgeState edgeState : node.getIncomingEdges()) {
if (edgeState.getSelector().hasStrongOpinion()) {
return true;
}
}
return false;
}
}