1 package org.eclipse.aether.internal.impl;
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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.impl.LocalRepositoryProvider;
34 import org.eclipse.aether.repository.LocalRepository;
35 import org.eclipse.aether.repository.LocalRepositoryManager;
36 import org.eclipse.aether.repository.NoLocalRepositoryManagerException;
37 import org.eclipse.aether.spi.localrepo.LocalRepositoryManagerFactory;
38 import org.eclipse.aether.spi.locator.Service;
39 import org.eclipse.aether.spi.locator.ServiceLocator;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
42
43
44
45 @Singleton
46 @Named
47 public class DefaultLocalRepositoryProvider
48 implements LocalRepositoryProvider, Service
49 {
50
51 private static final Logger LOGGER = LoggerFactory.getLogger( DefaultLocalRepositoryProvider.class );
52
53 private Collection<LocalRepositoryManagerFactory> managerFactories = new ArrayList<>();
54
55 public DefaultLocalRepositoryProvider()
56 {
57
58 }
59
60 @Inject
61 DefaultLocalRepositoryProvider( Set<LocalRepositoryManagerFactory> factories )
62 {
63 setLocalRepositoryManagerFactories( factories );
64 }
65
66 public void initService( ServiceLocator locator )
67 {
68 setLocalRepositoryManagerFactories( locator.getServices( LocalRepositoryManagerFactory.class ) );
69 }
70
71 public DefaultLocalRepositoryProvider addLocalRepositoryManagerFactory( LocalRepositoryManagerFactory factory )
72 {
73 managerFactories.add( requireNonNull( factory, "local repository manager factory cannot be null" ) );
74 return this;
75 }
76
77 public DefaultLocalRepositoryProvider setLocalRepositoryManagerFactories(
78 Collection<LocalRepositoryManagerFactory> factories )
79 {
80 if ( factories == null )
81 {
82 managerFactories = new ArrayList<>( 2 );
83 }
84 else
85 {
86 managerFactories = factories;
87 }
88 return this;
89 }
90
91 public LocalRepositoryManager newLocalRepositoryManager( RepositorySystemSession session,
92 LocalRepository repository )
93 throws NoLocalRepositoryManagerException
94 {
95 PrioritizedComponents<LocalRepositoryManagerFactory> factories = new PrioritizedComponents<>( session );
96 for ( LocalRepositoryManagerFactory factory : this.managerFactories )
97 {
98 factories.add( factory, factory.getPriority() );
99 }
100
101 List<NoLocalRepositoryManagerException> errors = new ArrayList<>();
102 for ( PrioritizedComponent<LocalRepositoryManagerFactory> factory : factories.getEnabled() )
103 {
104 try
105 {
106 LocalRepositoryManager manager = factory.getComponent().newInstance( session, repository );
107
108 if ( LOGGER.isDebugEnabled() )
109 {
110 StringBuilder buffer = new StringBuilder( 256 );
111 buffer.append( "Using manager " ).append( manager.getClass().getSimpleName() );
112 Utils.appendClassLoader( buffer, manager );
113 buffer.append( " with priority " ).append( factory.getPriority() );
114 buffer.append( " for " ).append( repository.getBasedir() );
115
116 LOGGER.debug( buffer.toString() );
117 }
118
119 return manager;
120 }
121 catch ( NoLocalRepositoryManagerException e )
122 {
123
124 errors.add( e );
125 }
126 }
127 if ( LOGGER.isDebugEnabled() && errors.size() > 1 )
128 {
129 for ( Exception e : errors )
130 {
131 LOGGER.debug( "Could not obtain local repository manager for {}", repository, e );
132 }
133 }
134
135 StringBuilder buffer = new StringBuilder( 256 );
136 if ( factories.isEmpty() )
137 {
138 buffer.append( "No local repository managers registered" );
139 }
140 else
141 {
142 buffer.append( "Cannot access " ).append( repository.getBasedir() );
143 buffer.append( " with type " ).append( repository.getContentType() );
144 buffer.append( " using the available factories " );
145 factories.list( buffer );
146 }
147
148 throw new NoLocalRepositoryManagerException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 )
149 : null );
150 }
151
152 }