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.List;
028import java.util.Map;
029
030import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactory;
031import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
032
033import static java.util.Objects.requireNonNull;
034import static java.util.stream.Collectors.toList;
035
036/**
037 * Default implementation.
038 *
039 * @since 1.8.0
040 */
041@Singleton
042@Named
043public class DefaultChecksumAlgorithmFactorySelector implements ChecksumAlgorithmFactorySelector {
044    private final Map<String, ChecksumAlgorithmFactory> factories;
045
046    @Inject
047    public DefaultChecksumAlgorithmFactorySelector(Map<String, ChecksumAlgorithmFactory> factories) {
048        this.factories = requireNonNull(factories);
049    }
050
051    @Override
052    public ChecksumAlgorithmFactory select(String algorithmName) {
053        requireNonNull(algorithmName, "algorithmMame must not be null");
054        ChecksumAlgorithmFactory factory = factories.get(algorithmName);
055        if (factory == null) {
056            throw new IllegalArgumentException(String.format(
057                    "Unsupported checksum algorithm %s, supported ones are %s",
058                    algorithmName,
059                    getChecksumAlgorithmFactories().stream()
060                            .map(ChecksumAlgorithmFactory::getName)
061                            .collect(toList())));
062        }
063        return factory;
064    }
065
066    @Override
067    public List<ChecksumAlgorithmFactory> selectList(Collection<String> algorithmNames) {
068        return algorithmNames.stream().map(this::select).collect(toList());
069    }
070
071    @Override
072    public Collection<ChecksumAlgorithmFactory> getChecksumAlgorithmFactories() {
073        return Collections.unmodifiableCollection(factories.values());
074    }
075
076    @Override
077    public boolean isChecksumExtension(String extension) {
078        requireNonNull(extension);
079        if (extension.contains(".")) {
080            return factories.values().stream().anyMatch(a -> extension.endsWith("." + a.getFileExtension()));
081        } else {
082            return factories.values().stream().anyMatch(a -> extension.equals(a.getFileExtension()));
083        }
084    }
085}