1 package org.eclipse.aether.internal.impl;
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22 import java.util.ArrayList;
23 import java.util.Collection;
24 import java.util.List;
25 import static java.util.Objects.requireNonNull;
26 import java.util.Set;
27
28 import javax.inject.Inject;
29 import javax.inject.Named;
30 import javax.inject.Singleton;
31
32 import org.eclipse.aether.RepositorySystemSession;
33 import org.eclipse.aether.repository.RemoteRepository;
34 import org.eclipse.aether.spi.connector.layout.RepositoryLayout;
35 import org.eclipse.aether.spi.connector.layout.RepositoryLayoutFactory;
36 import org.eclipse.aether.spi.connector.layout.RepositoryLayoutProvider;
37 import org.eclipse.aether.spi.locator.Service;
38 import org.eclipse.aether.spi.locator.ServiceLocator;
39 import org.eclipse.aether.transfer.NoRepositoryLayoutException;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
42
43
44
45 @Singleton
46 @Named
47 public final class DefaultRepositoryLayoutProvider
48 implements RepositoryLayoutProvider, Service
49 {
50
51 private static final Logger LOGGER = LoggerFactory.getLogger( DefaultRepositoryLayoutProvider.class );
52
53 private Collection<RepositoryLayoutFactory> factories = new ArrayList<>();
54
55 public DefaultRepositoryLayoutProvider()
56 {
57
58 }
59
60 @Inject
61 DefaultRepositoryLayoutProvider( Set<RepositoryLayoutFactory> layoutFactories )
62 {
63 setRepositoryLayoutFactories( layoutFactories );
64 }
65
66 public void initService( ServiceLocator locator )
67 {
68 setRepositoryLayoutFactories( locator.getServices( RepositoryLayoutFactory.class ) );
69 }
70
71 public DefaultRepositoryLayoutProvider addRepositoryLayoutFactory( RepositoryLayoutFactory factory )
72 {
73 factories.add( requireNonNull( factory, "layout factory cannot be null" ) );
74 return this;
75 }
76
77 public DefaultRepositoryLayoutProvider setRepositoryLayoutFactories( Collection<RepositoryLayoutFactory> factories )
78 {
79 if ( factories == null )
80 {
81 this.factories = new ArrayList<>();
82 }
83 else
84 {
85 this.factories = factories;
86 }
87 return this;
88 }
89
90 public RepositoryLayout newRepositoryLayout( RepositorySystemSession session, RemoteRepository repository )
91 throws NoRepositoryLayoutException
92 {
93 requireNonNull( repository, "remote repository cannot be null" );
94
95 PrioritizedComponents<RepositoryLayoutFactory> factories = new PrioritizedComponents<>( session );
96 for ( RepositoryLayoutFactory factory : this.factories )
97 {
98 factories.add( factory, factory.getPriority() );
99 }
100
101 List<NoRepositoryLayoutException> errors = new ArrayList<>();
102 for ( PrioritizedComponent<RepositoryLayoutFactory> factory : factories.getEnabled() )
103 {
104 try
105 {
106 return factory.getComponent().newInstance( session, repository );
107 }
108 catch ( NoRepositoryLayoutException e )
109 {
110
111 errors.add( e );
112 }
113 }
114 if ( LOGGER.isDebugEnabled() && errors.size() > 1 )
115 {
116 for ( Exception e : errors )
117 {
118 LOGGER.debug( "Could not obtain layout factory for {}", repository, e );
119 }
120 }
121
122 StringBuilder buffer = new StringBuilder( 256 );
123 if ( factories.isEmpty() )
124 {
125 buffer.append( "No layout factories registered" );
126 }
127 else
128 {
129 buffer.append( "Cannot access " ).append( repository.getUrl() );
130 buffer.append( " with type " ).append( repository.getContentType() );
131 buffer.append( " using the available layout factories: " );
132 factories.list( buffer );
133 }
134
135 throw new NoRepositoryLayoutException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 )
136 : null );
137 }
138
139 }