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.offline;
020
021import java.util.Collection;
022
023import org.eclipse.aether.RepositorySystemSession;
024import org.eclipse.aether.impl.OfflineController;
025import org.eclipse.aether.internal.impl.Utils;
026import org.eclipse.aether.repository.RemoteRepository;
027import org.eclipse.aether.spi.connector.ArtifactDownload;
028import org.eclipse.aether.spi.connector.ArtifactUpload;
029import org.eclipse.aether.spi.connector.MetadataDownload;
030import org.eclipse.aether.spi.connector.MetadataUpload;
031import org.eclipse.aether.spi.connector.RepositoryConnector;
032import org.eclipse.aether.transfer.ArtifactTransferException;
033import org.eclipse.aether.transfer.MetadataTransferException;
034import org.eclipse.aether.transfer.RepositoryOfflineException;
035
036import static java.util.Objects.requireNonNull;
037
038/**
039 * Offline connector, that prevents ANY remote access in case session is offline.
040 *
041 * @since 2.0.8
042 */
043public final class OfflineRepositoryConnector implements RepositoryConnector {
044    private final RepositorySystemSession session;
045    private final RemoteRepository remoteRepository;
046    private final OfflineController offlineController;
047    private final RepositoryConnector delegate;
048
049    public OfflineRepositoryConnector(
050            RepositorySystemSession session,
051            RemoteRepository remoteRepository,
052            OfflineController offlineController,
053            RepositoryConnector delegate) {
054        this.session = requireNonNull(session);
055        this.remoteRepository = requireNonNull(remoteRepository);
056        this.offlineController = requireNonNull(offlineController);
057        this.delegate = requireNonNull(delegate);
058    }
059
060    @Override
061    public void close() {
062        delegate.close();
063    }
064
065    @Override
066    public void get(
067            Collection<? extends ArtifactDownload> artifactDownloads,
068            Collection<? extends MetadataDownload> metadataDownloads) {
069        try {
070            Utils.checkOffline(session, offlineController, remoteRepository);
071        } catch (RepositoryOfflineException e) {
072            if (artifactDownloads != null && !artifactDownloads.isEmpty()) {
073                artifactDownloads.forEach(
074                        d -> d.setException(new ArtifactTransferException(d.getArtifact(), remoteRepository, e)));
075            }
076            if (metadataDownloads != null && !metadataDownloads.isEmpty()) {
077                metadataDownloads.forEach(
078                        d -> d.setException(new MetadataTransferException(d.getMetadata(), remoteRepository, e)));
079            }
080            return;
081        }
082        delegate.get(artifactDownloads, metadataDownloads);
083    }
084
085    @Override
086    public void put(
087            Collection<? extends ArtifactUpload> artifactUploads,
088            Collection<? extends MetadataUpload> metadataUploads) {
089        try {
090            Utils.checkOffline(session, offlineController, remoteRepository);
091        } catch (RepositoryOfflineException e) {
092            if (artifactUploads != null && !artifactUploads.isEmpty()) {
093                artifactUploads.forEach(
094                        d -> d.setException(new ArtifactTransferException(d.getArtifact(), remoteRepository, e)));
095            }
096            if (metadataUploads != null && !metadataUploads.isEmpty()) {
097                metadataUploads.forEach(
098                        d -> d.setException(new MetadataTransferException(d.getMetadata(), remoteRepository, e)));
099            }
100            return;
101        }
102        delegate.put(artifactUploads, metadataUploads);
103    }
104
105    @Override
106    public String toString() {
107        return OfflinePipelineRepositoryConnectorFactory.NAME + "( " + delegate.toString() + " )";
108    }
109}