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.ArrayList;
027import java.util.Collection;
028import java.util.HashMap;
029import java.util.List;
030import java.util.Map;
031
032import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactory;
033import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
034
035import static java.util.Objects.requireNonNull;
036import static java.util.stream.Collectors.toList;
037
038/**
039 * Default implementation.
040 *
041 * @since 1.8.0
042 */
043@Singleton
044@Named
045public class DefaultChecksumAlgorithmFactorySelector
046        implements ChecksumAlgorithmFactorySelector
047{
048    private final Map<String, ChecksumAlgorithmFactory> factories;
049
050    /**
051     * Default ctor for SL.
052     */
053    @Deprecated
054    public DefaultChecksumAlgorithmFactorySelector()
055    {
056        this.factories = new HashMap<>();
057        this.factories.put( Sha512ChecksumAlgorithmFactory.NAME, new Sha512ChecksumAlgorithmFactory() );
058        this.factories.put( Sha256ChecksumAlgorithmFactory.NAME, new Sha256ChecksumAlgorithmFactory() );
059        this.factories.put( Sha1ChecksumAlgorithmFactory.NAME, new Sha1ChecksumAlgorithmFactory() );
060        this.factories.put( Md5ChecksumAlgorithmFactory.NAME, new Md5ChecksumAlgorithmFactory() );
061    }
062
063    @Inject
064    public DefaultChecksumAlgorithmFactorySelector( Map<String, ChecksumAlgorithmFactory> factories )
065    {
066        this.factories = requireNonNull( factories );
067    }
068
069    @Override
070    public ChecksumAlgorithmFactory select( String algorithmName )
071    {
072        requireNonNull( algorithmName, "algorithmMame must not be null" );
073        ChecksumAlgorithmFactory factory = factories.get( algorithmName );
074        if ( factory == null )
075        {
076            throw new IllegalArgumentException(
077                    String.format( "Unsupported checksum algorithm %s, supported ones are %s",
078                            algorithmName,
079                            getChecksumAlgorithmFactories().stream()
080                                    .map( ChecksumAlgorithmFactory::getName )
081                                    .collect( toList() )
082                    )
083            );
084        }
085        return factory;
086    }
087
088    @Override
089    public List<ChecksumAlgorithmFactory> selectList( Collection<String> algorithmNames )
090    {
091        return algorithmNames.stream()
092                .map( this::select )
093                .collect( toList() );
094    }
095
096    @Override
097    public List<ChecksumAlgorithmFactory> getChecksumAlgorithmFactories()
098    {
099        return new ArrayList<>( factories.values() );
100    }
101}