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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.archetype.downloader;
20  
21  import javax.inject.Inject;
22  import javax.inject.Named;
23  import javax.inject.Singleton;
24  
25  import java.io.File;
26  import java.util.List;
27  
28  import org.eclipse.aether.RepositorySystem;
29  import org.eclipse.aether.RepositorySystemSession;
30  import org.eclipse.aether.artifact.DefaultArtifact;
31  import org.eclipse.aether.repository.RemoteRepository;
32  import org.eclipse.aether.resolution.ArtifactRequest;
33  import org.eclipse.aether.resolution.ArtifactResolutionException;
34  import org.eclipse.aether.resolution.ArtifactResult;
35  
36  /**
37   * @author Jason van Zyl
38   */
39  @Named
40  @Singleton
41  public class DefaultDownloader implements Downloader {
42  
43      @Inject
44      private RepositorySystem repositorySystem;
45  
46      @Override
47      public File download(
48              String groupId,
49              String artifactId,
50              String version,
51              List<RemoteRepository> remoteRepositories,
52              RepositorySystemSession repositorySystemSession)
53              throws DownloadException {
54  
55          DefaultArtifact artifact = new DefaultArtifact(groupId, artifactId, "", "jar", version);
56  
57          ArtifactRequest request = new ArtifactRequest(artifact, remoteRepositories, "archetype");
58          try {
59              ArtifactResult result = repositorySystem.resolveArtifact(repositorySystemSession, request);
60              return result.getArtifact().getFile();
61          } catch (ArtifactResolutionException e) {
62              throw new DownloadException("Could not resolve artifact " + artifactId, e);
63          }
64      }
65  }