1 package org.apache.maven.plugin.coreit;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.maven.artifact.manager.WagonManager;
23 import org.apache.maven.plugin.AbstractMojo;
24 import org.apache.maven.plugin.MojoExecutionException;
25 import org.apache.maven.plugin.MojoFailureException;
26 import org.apache.maven.wagon.Wagon;
27 import org.apache.maven.wagon.repository.Repository;
28
29 import java.io.File;
30 import java.io.FileOutputStream;
31 import java.io.IOException;
32 import java.io.OutputStream;
33 import java.util.Properties;
34
35 /**
36 * Loads resources from a class loader used to load a wagon provider. The wagon is merely used to access the extension
37 * class loader it came from which is otherwise not accessible to a plugin.
38 *
39 * @goal lookup-wagon
40 * @phase validate
41 *
42 * @author Benjamin Bentmann
43 *
44 */
45 public class LookupWagonMojo
46 extends AbstractMojo
47 {
48
49 /**
50 * The Wagon manager used to retrieve wagon providers.
51 *
52 * @component
53 */
54 private WagonManager wagonManager;
55
56 /**
57 * The path to the properties file used to track the results of the wagon lookups.
58 *
59 * @parameter property="wagon.outputFile"
60 */
61 private File outputFile;
62
63 /**
64 * The URLs for which to look up wagons.
65 *
66 * @parameter
67 */
68 private String[] urls;
69
70 /**
71 * Runs this mojo.
72 *
73 * @throws MojoFailureException If the attached file has not been set.
74 */
75 public void execute()
76 throws MojoExecutionException, MojoFailureException
77 {
78 Properties loaderProperties = new Properties();
79
80 if ( urls != null )
81 {
82 for ( int i = 0; i < urls.length; i++ )
83 {
84 String url = urls[i];
85 getLog().info( "[MAVEN-CORE-IT-LOG] Looking up wagon for URL " + url );
86
87 try
88 {
89 Repository repo = new Repository( "repo-" + i, url );
90 Wagon wagon = wagonManager.getWagon( repo );
91 getLog().info( "[MAVEN-CORE-IT-LOG] " + wagon );
92
93 loaderProperties.setProperty( url + ".hash", Integer.toString( System.identityHashCode( wagon ) ) );
94 loaderProperties.setProperty( url + ".class", wagon.getClass().getName() );
95 }
96 catch ( Exception e )
97 {
98 getLog().warn( "[MAVEN-CORE-IT-LOG] Failed to lookp up wagon for URL " + url, e );
99 }
100 }
101 }
102
103 getLog().info( "[MAVEN-CORE-IT-LOG] Creating output file " + outputFile );
104
105 OutputStream out = null;
106 try
107 {
108 outputFile.getParentFile().mkdirs();
109 out = new FileOutputStream( outputFile );
110 loaderProperties.store( out, "MAVEN-CORE-IT-LOG" );
111 }
112 catch ( IOException e )
113 {
114 throw new MojoExecutionException( "Output file could not be created: " + outputFile, e );
115 }
116 finally
117 {
118 if ( out != null )
119 {
120 try
121 {
122 out.close();
123 }
124 catch ( IOException e )
125 {
126 // just ignore
127 }
128 }
129 }
130
131 getLog().info( "[MAVEN-CORE-IT-LOG] Created output file " + outputFile );
132 }
133
134 }