001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance 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, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.kernel.impl.services;
019
020import org.fcrepo.kernel.api.exception.UnsupportedAlgorithmException;
021import org.fcrepo.kernel.api.models.Binary;
022import org.fcrepo.kernel.api.services.FixityService;
023import org.fcrepo.kernel.api.utils.ContentDigest.DIGEST_ALGORITHM;
024import org.fcrepo.persistence.common.MultiDigestInputStreamWrapper;
025import org.springframework.stereotype.Component;
026
027import java.net.URI;
028import java.util.Collection;
029import java.util.stream.Collectors;
030
031/**
032 * Implementation of {@link org.fcrepo.kernel.api.services.FixityService}
033 *
034 * @author dbernstein
035 */
036@Component
037public class FixityServiceImpl extends AbstractService implements FixityService {
038    @Override
039    public Collection<URI> getFixity(final Binary binary, final Collection<String> algorithms)
040            throws UnsupportedAlgorithmException {
041        final var digestAlgs = algorithms.stream()
042                .map(DIGEST_ALGORITHM::fromAlgorithm)
043                .collect(Collectors.toList());
044
045        final MultiDigestInputStreamWrapper digestWrapper = new MultiDigestInputStreamWrapper(
046                binary.getContent(), null, digestAlgs);
047
048        return digestWrapper.getDigests();
049    }
050
051    @Override
052    public Collection<URI> checkFixity(final Binary binary, final Collection<String> algorithms)
053            throws UnsupportedAlgorithmException {
054        return null;
055    }
056}