/**
 * Provides some metadata operations, like querying the remote repository for a list of versions available for an
 * artifact.
 *
 */
@Deprecated
public interface MetadataSource {
    String ROLE = MetadataSource.class.getName();

    MetadataResolution retrieve(
            ArtifactMetadata artifact, ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories)

 * format: for discovering the metadata artifact, parsing the metadata and constructing a `MutableModuleComponentResolveMetadata`.
 */
public interface MetadataSource<S extends MutableModuleComponentResolveMetadata> {

    @Nullable
    S create(String repositoryName,
             ComponentResolvers componentResolvers,
             ModuleComponentIdentifier moduleComponentIdentifier,

            }
        }
    }

    def "can resolve with only repository-specific metadata"() {
        def metadataSource = useIvy() ? "ivyDescriptor" : "mavenPom"
        buildFile << """
            repositories.all {
                metadataSources {
                    ${metadataSource}()
                }
            }
            dependencies {
                conf 'org.test:projectA:1.+'
            }

 */
public class RedirectingGradleMetadataModuleMetadataSource implements MetadataSource<MutableModuleComponentResolveMetadata> {
    private final MetadataSource<?> delegate;
    private final MetadataSource<MutableModuleComponentResolveMetadata> gradleModuleMetadataSource;

    public RedirectingGradleMetadataModuleMetadataSource(MetadataSource<?> delegate, MetadataSource<MutableModuleComponentResolveMetadata> gradleModuleMetadataSource) {

public class DefaultImmutableMetadataSources implements ImmutableMetadataSources {
    private final ImmutableList<MetadataSource<?>> sources;

    public DefaultImmutableMetadataSources(Iterable<MetadataSource<?>> sources) {
        this.sources = ImmutableList.copyOf(sources);
    }

    @Override
    public ImmutableList<MetadataSource<?>> sources() {
        return sources;
    }

import com.google.common.collect.ImmutableList;

/**
 * An immutable, usable representation of metadata sources.
 */
public interface ImmutableMetadataSources {
    ImmutableList<MetadataSource<?>> sources();

        }
    }

    private static class MavenSnapshotDecoratingSource implements MetadataSource<MutableModuleComponentResolveMetadata> {
        private final MetadataSource<MutableModuleComponentResolveMetadata> delegate;

        private MavenSnapshotDecoratingSource(MetadataSource<MutableModuleComponentResolveMetadata> delegate) {
            this.delegate = delegate;
        }

        @Override

        // Iterate over the metadata sources to see if they can provide the version list
        for (MetadataSource<?> metadataSource : metadataSources.sources()) {
            metadataSource.listModuleVersions(dependency, module, completeIvyPatterns, completeArtifactPatterns, versionLister, result);
            if (result.hasResult() && result.isAuthoritative()) {

import org.gradle.api.internal.artifacts.repositories.metadata.ImmutableMetadataSources
import org.gradle.api.internal.artifacts.repositories.metadata.MetadataArtifactProvider
import org.gradle.api.internal.artifacts.repositories.metadata.MetadataSource
import org.gradle.api.internal.artifacts.repositories.metadata.MutableModuleMetadataFactory
import org.gradle.internal.component.external.model.ModuleComponentArtifactIdentifier

import org.gradle.api.internal.artifacts.repositories.metadata.MetadataArtifactProvider
import org.gradle.api.internal.artifacts.repositories.metadata.MetadataSource
import org.gradle.api.internal.artifacts.repositories.transport.RepositoryTransport
import org.gradle.internal.action.ConfigurableRule
import org.gradle.internal.action.DefaultConfigurableRules