001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.eclipse.aether.internal.impl.checksum;
020
021import javax.inject.Inject;
022import javax.inject.Named;
023import javax.inject.Singleton;
024
025import java.util.Collection;
026import java.util.Collections;
027import java.util.HashMap;
028import java.util.List;
029import java.util.Map;
030
031import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactory;
032import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
033
034import static java.util.Objects.requireNonNull;
035import static java.util.stream.Collectors.toList;
036
037/**
038 * Default implementation.
039 *
040 * @since 1.8.0
041 */
042@Singleton
043@Named
044public class DefaultChecksumAlgorithmFactorySelector implements ChecksumAlgorithmFactorySelector {
045    private final Map<String, ChecksumAlgorithmFactory> factories;
046
047    /**
048     * Default ctor for SL.
049     */
050    @Deprecated
051    public DefaultChecksumAlgorithmFactorySelector() {
052        this.factories = new HashMap<>();
053        this.factories.put(Sha512ChecksumAlgorithmFactory.NAME, new Sha512ChecksumAlgorithmFactory());
054        this.factories.put(Sha256ChecksumAlgorithmFactory.NAME, new Sha256ChecksumAlgorithmFactory());
055        this.factories.put(Sha1ChecksumAlgorithmFactory.NAME, new Sha1ChecksumAlgorithmFactory());
056        this.factories.put(Md5ChecksumAlgorithmFactory.NAME, new Md5ChecksumAlgorithmFactory());
057    }
058
059    @Inject
060    public DefaultChecksumAlgorithmFactorySelector(Map<String, ChecksumAlgorithmFactory> factories) {
061        this.factories = requireNonNull(factories);
062    }
063
064    @Override
065    public ChecksumAlgorithmFactory select(String algorithmName) {
066        requireNonNull(algorithmName, "algorithmMame must not be null");
067        ChecksumAlgorithmFactory factory = factories.get(algorithmName);
068        if (factory == null) {
069            throw new IllegalArgumentException(String.format(
070                    "Unsupported checksum algorithm %s, supported ones are %s",
071                    algorithmName,
072                    getChecksumAlgorithmFactories().stream()
073                            .map(ChecksumAlgorithmFactory::getName)
074                            .collect(toList())));
075        }
076        return factory;
077    }
078
079    @Override
080    public List<ChecksumAlgorithmFactory> selectList(Collection<String> algorithmNames) {
081        return algorithmNames.stream().map(this::select).collect(toList());
082    }
083
084    @Override
085    public Collection<ChecksumAlgorithmFactory> getChecksumAlgorithmFactories() {
086        return Collections.unmodifiableCollection(factories.values());
087    }
088
089    @Override
090    public boolean isChecksumExtension(String extension) {
091        requireNonNull(extension);
092        if (extension.contains(".")) {
093            return factories.values().stream().anyMatch(a -> extension.endsWith("." + a.getFileExtension()));
094        } else {
095            return factories.values().stream().anyMatch(a -> extension.equals(a.getFileExtension()));
096        }
097    }
098}