001package org.eclipse.aether.internal.impl.checksum;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import javax.inject.Inject;
023import javax.inject.Named;
024import javax.inject.Singleton;
025
026import java.util.List;
027import java.util.Map;
028
029import org.eclipse.aether.RepositorySystemSession;
030import org.eclipse.aether.artifact.Artifact;
031import org.eclipse.aether.repository.RemoteRepository;
032import org.eclipse.aether.spi.checksums.TrustedChecksumsSource;
033import org.eclipse.aether.spi.connector.ArtifactDownload;
034import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactory;
035import org.eclipse.aether.spi.connector.checksum.ProvidedChecksumsSource;
036
037import static java.util.Objects.requireNonNull;
038
039/**
040 * Adapter that adapts {@link TrustedChecksumsSource} to {@link ProvidedChecksumsSource} used by connector. Hence, any
041 * "trusted" source exist that is enabled, automatically becomes "provided" source as well.
042 *
043 * @since 1.9.0
044 */
045@Singleton
046@Named( TrustedToProvidedChecksumsSourceAdapter.NAME )
047public final class TrustedToProvidedChecksumsSourceAdapter
048        implements ProvidedChecksumsSource
049{
050    public static final String NAME = "trusted2provided";
051
052    private final Map<String, TrustedChecksumsSource> trustedChecksumsSources;
053
054    @Inject
055    public TrustedToProvidedChecksumsSourceAdapter( Map<String, TrustedChecksumsSource> trustedChecksumsSources )
056    {
057        this.trustedChecksumsSources = requireNonNull( trustedChecksumsSources );
058    }
059
060    @Override
061    public Map<String, String> getProvidedArtifactChecksums( RepositorySystemSession session,
062                                                             ArtifactDownload transfer,
063                                                             List<ChecksumAlgorithmFactory> checksumAlgorithmFactories )
064    {
065        Artifact artifact = transfer.getArtifact();
066        for ( RemoteRepository remoteRepository : transfer.getRepositories() )
067        {
068            for ( TrustedChecksumsSource trustedChecksumsSource : trustedChecksumsSources.values() )
069            {
070                Map<String, String> trustedChecksums = trustedChecksumsSource
071                        .getTrustedArtifactChecksums( session, artifact, remoteRepository, checksumAlgorithmFactories );
072                if ( trustedChecksums != null && !trustedChecksums.isEmpty() )
073                {
074                    return trustedChecksums;
075                }
076            }
077        }
078        return null;
079    }
080}