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( session, "session cannot be null" );
94 requireNonNull( repository, "remote repository cannot be null" );
95
96 PrioritizedComponents<RepositoryLayoutFactory> factories = new PrioritizedComponents<>( session );
97 for ( RepositoryLayoutFactory factory : this.factories )
98 {
99 factories.add( factory, factory.getPriority() );
100 }
101
102 List<NoRepositoryLayoutException> errors = new ArrayList<>();
103 for ( PrioritizedComponent<RepositoryLayoutFactory> factory : factories.getEnabled() )
104 {
105 try
106 {
107 return factory.getComponent().newInstance( session, repository );
108 }
109 catch ( NoRepositoryLayoutException e )
110 {
111
112 errors.add( e );
113 }
114 }
115 if ( LOGGER.isDebugEnabled() && errors.size() > 1 )
116 {
117 for ( Exception e : errors )
118 {
119 LOGGER.debug( "Could not obtain layout factory for {}", repository, e );
120 }
121 }
122
123 StringBuilder buffer = new StringBuilder( 256 );
124 if ( factories.isEmpty() )
125 {
126 buffer.append( "No layout factories registered" );
127 }
128 else
129 {
130 buffer.append( "Cannot access " ).append( repository.getUrl() );
131 buffer.append( " with type " ).append( repository.getContentType() );
132 buffer.append( " using the available layout factories: " );
133 factories.list( buffer );
134 }
135
136 throw new NoRepositoryLayoutException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 )
137 : null );
138 }
139
140 }