org.gradle.api.internaldsl.dependencies.PlatformSupport Maven / Gradle / Ivy
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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.dsl.dependencies;
import com.google.common.base.Objects;
import org.gradle.api.attributes.AttributeDisambiguationRule;
import org.gradle.api.attributes.AttributeMatchingStrategy;
import org.gradle.api.attributes.AttributesSchema;
import org.gradle.api.attributes.Category;
import org.gradle.api.attributes.HasConfigurableAttributes;
import org.gradle.api.attributes.MultipleCandidatesDetails;
import org.gradle.api.internal.ReusableAction;
import org.gradle.api.internal.artifacts.repositories.metadata.MavenImmutableAttributesFactory;
import org.gradle.api.internal.model.NamedObjectInstantiator;
import org.gradle.internal.component.external.model.ComponentVariant;
import javax.inject.Inject;
import java.util.Set;
public class PlatformSupport {
private final Category library;
private final Category regularPlatform;
private final Category enforcedPlatform;
public PlatformSupport(NamedObjectInstantiator instantiator) {
library = instantiator.named(Category.class, Category.LIBRARY);
regularPlatform = instantiator.named(Category.class, Category.REGULAR_PLATFORM);
enforcedPlatform = instantiator.named(Category.class, Category.ENFORCED_PLATFORM);
}
public boolean isTargetingPlatform(HasConfigurableAttributes target) {
Category category = target.getAttributes().getAttribute(Category.CATEGORY_ATTRIBUTE);
return regularPlatform.equals(category) || enforcedPlatform.equals(category);
}
public Category getRegularPlatformCategory() {
return regularPlatform;
}
public void configureSchema(AttributesSchema attributesSchema) {
configureCategoryDisambiguationRule(attributesSchema);
}
private void configureCategoryDisambiguationRule(AttributesSchema attributesSchema) {
AttributeMatchingStrategy categorySchema = attributesSchema.attribute(Category.CATEGORY_ATTRIBUTE);
categorySchema.getDisambiguationRules().add(ComponentCategoryDisambiguationRule.class, actionConfiguration -> {
actionConfiguration.params(library);
actionConfiguration.params(regularPlatform);
});
}
public void addPlatformAttribute(HasConfigurableAttributes dependency, final Category category) {
dependency.attributes(attributeContainer -> attributeContainer.attribute(Category.CATEGORY_ATTRIBUTE, category));
}
/**
* Checks if the variant is an {@code enforced-platform} one.
*
* This method is designed to be called on parsed metadata and thus interacts with the {@code String} version of the attribute.
*
* @param variant the variant to test
* @return {@code true} if this represents an {@code enforced-platform}, {@code false} otherwise
*/
public static boolean hasForcedDependencies(ComponentVariant variant) {
return Objects.equal(variant.getAttributes().getAttribute(MavenImmutableAttributesFactory.CATEGORY_ATTRIBUTE), Category.ENFORCED_PLATFORM);
}
public static class ComponentCategoryDisambiguationRule implements AttributeDisambiguationRule, ReusableAction {
final Category library;
final Category platform;
@Inject
ComponentCategoryDisambiguationRule(Category library, Category regularPlatform) {
this.library = library;
this.platform = regularPlatform;
}
@Override
public void execute(MultipleCandidatesDetails details) {
Category consumerValue = details.getConsumerValue();
if (consumerValue == null) {
Set candidateValues = details.getCandidateValues();
if (candidateValues.contains(library)) {
// default to library
details.closestMatch(library);
} else if (candidateValues.contains(platform)) {
// default to normal platform when only platforms are available and nothing has been requested
details.closestMatch(platform);
}
}
}
}
}