How to add a AttributeCompatibilityRule from within custom plugin

kKdH · January 27, 2020, 10:04am

Hey guys,

i would like to use the variant-aware-sharing feature within my plugin. I have to add a custom AttributeCompatibilityRule.

Can somebody share an example which ilustrates how a custom AttributeCompatibilityRule can be added in Java? I found only a DSL example:

dependencies {
    attributesSchema {
        attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE) {
            compatibilityRules.add(InstrumentedJarsRule)
        }
    }
}

Thanks

jendrik · January 27, 2020, 8:49pm

Hi @kKdH,

You can take some inspiration from the Gradle’s JavaEcosystemSupport code:

github.com

gradle/gradle/blob/da4afb6813b10c5fb60a84862adff747323dcab6/subprojects/core/src/main/java/org/gradle/api/internal/artifacts/JavaEcosystemSupport.java#L73


}


private static void configureBundling(AttributesSchema attributesSchema) {
    AttributeMatchingStrategy<Bundling> bundlingSchema = attributesSchema.attribute(Bundling.BUNDLING_ATTRIBUTE);
    bundlingSchema.getCompatibilityRules().add(BundlingCompatibilityRules.class);
    bundlingSchema.getDisambiguationRules().add(BundlingDisambiguationRules.class);
}


private static void configureUsage(AttributesSchema attributesSchema, final ObjectFactory objectFactory) {
    AttributeMatchingStrategy<Usage> usageSchema = attributesSchema.attribute(Usage.USAGE_ATTRIBUTE);
    usageSchema.getCompatibilityRules().add(UsageCompatibilityRules.class);
    usageSchema.getDisambiguationRules().add(UsageDisambiguationRules.class, new Action<ActionConfiguration>() {
        @Override
        public void execute(ActionConfiguration actionConfiguration) {
            actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_API));
            actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_API_JARS));
            actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_RUNTIME));
            actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_RUNTIME_JARS));
        }
    });
}

kKdH · January 28, 2020, 11:41am

Awesome! That is what I was looking for.