1 package org.apache.maven.extension.internal;
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22 import com.google.common.collect.ImmutableSet;
23 import org.apache.maven.project.ExtensionDescriptor;
24 import org.apache.maven.project.ExtensionDescriptorBuilder;
25 import org.codehaus.plexus.classworlds.realm.ClassRealm;
26
27 import java.io.File;
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.net.URL;
31 import java.util.Collection;
32 import java.util.Enumeration;
33 import java.util.LinkedHashSet;
34 import java.util.Set;
35
36
37
38
39
40
41
42 public class CoreExtensionEntry
43 {
44 private final ClassRealm realm;
45
46 private final Set<String> artifacts;
47
48 private final Set<String> packages;
49
50 public CoreExtensionEntry( ClassRealm realm, Collection<String> artifacts, Collection<String> packages )
51 {
52 this.realm = realm;
53 this.artifacts = ImmutableSet.copyOf( artifacts );
54 this.packages = ImmutableSet.copyOf( packages );
55 }
56
57
58
59
60 public ClassRealm getClassRealm()
61 {
62 return realm;
63 }
64
65
66
67
68 public Set<String> getExportedArtifacts()
69 {
70 return artifacts;
71 }
72
73
74
75
76 public Set<String> getExportedPackages()
77 {
78 return packages;
79 }
80
81 private static final ExtensionDescriptorBuilder builder = new ExtensionDescriptorBuilder();
82
83 public static CoreExtensionEntry discoverFrom( ClassRealm loader )
84 {
85 Set<String> artifacts = new LinkedHashSet<>();
86 Set<String> packages = new LinkedHashSet<>();
87
88 try
89 {
90 Enumeration<URL> urls = loader.getResources( builder.getExtensionDescriptorLocation() );
91 while ( urls.hasMoreElements() )
92 {
93
94 try ( InputStream is = urls.nextElement().openStream() )
95 {
96 ExtensionDescriptor descriptor = builder.build( is );
97 artifacts.addAll( descriptor.getExportedArtifacts() );
98 packages.addAll( descriptor.getExportedPackages() );
99 }
100 }
101 }
102 catch ( IOException ignored )
103 {
104
105 }
106
107 return new CoreExtensionEntry( loader, artifacts, packages );
108 }
109
110 public static CoreExtensionEntry discoverFrom( ClassRealm loader, Collection<File> classpath )
111 {
112 Set<String> artifacts = new LinkedHashSet<>();
113 Set<String> packages = new LinkedHashSet<>();
114
115 try
116 {
117 for ( File entry : classpath )
118 {
119 ExtensionDescriptor descriptor = builder.build( entry );
120 if ( descriptor != null )
121 {
122 artifacts.addAll( descriptor.getExportedArtifacts() );
123 packages.addAll( descriptor.getExportedPackages() );
124 }
125 }
126 }
127 catch ( IOException ignored )
128 {
129
130 }
131
132 return new CoreExtensionEntry( loader, artifacts, packages );
133 }
134
135 }