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
31 import org.eclipse.aether.RepositorySystemSession;
32 import org.eclipse.aether.repository.RemoteRepository;
33 import org.eclipse.aether.spi.connector.transport.Transporter;
34 import org.eclipse.aether.spi.connector.transport.TransporterFactory;
35 import org.eclipse.aether.spi.connector.transport.TransporterProvider;
36 import org.eclipse.aether.spi.locator.Service;
37 import org.eclipse.aether.spi.locator.ServiceLocator;
38 import org.eclipse.aether.spi.log.Logger;
39 import org.eclipse.aether.spi.log.LoggerFactory;
40 import org.eclipse.aether.spi.log.NullLoggerFactory;
41 import org.eclipse.aether.transfer.NoTransporterException;
42
43
44
45 @Named
46 public final class DefaultTransporterProvider
47 implements TransporterProvider, Service
48 {
49
50 private Logger logger = NullLoggerFactory.LOGGER;
51
52 private Collection<TransporterFactory> factories = new ArrayList<TransporterFactory>();
53
54 public DefaultTransporterProvider()
55 {
56
57 }
58
59 @Inject
60 DefaultTransporterProvider( Set<TransporterFactory> transporterFactories, LoggerFactory loggerFactory )
61 {
62 setLoggerFactory( loggerFactory );
63 setTransporterFactories( transporterFactories );
64 }
65
66 public void initService( ServiceLocator locator )
67 {
68 setLoggerFactory( locator.getService( LoggerFactory.class ) );
69 setTransporterFactories( locator.getServices( TransporterFactory.class ) );
70 }
71
72 public DefaultTransporterProvider setLoggerFactory( LoggerFactory loggerFactory )
73 {
74 this.logger = NullLoggerFactory.getSafeLogger( loggerFactory, getClass() );
75 return this;
76 }
77
78 public DefaultTransporterProvider addTransporterFactory( TransporterFactory factory )
79 {
80 factories.add( requireNonNull( factory, "transporter factory cannot be null" ) );
81 return this;
82 }
83
84 public DefaultTransporterProvider setTransporterFactories( Collection<TransporterFactory> factories )
85 {
86 if ( factories == null )
87 {
88 this.factories = new ArrayList<TransporterFactory>();
89 }
90 else
91 {
92 this.factories = factories;
93 }
94 return this;
95 }
96
97 public Transporter newTransporter( RepositorySystemSession session, RemoteRepository repository )
98 throws NoTransporterException
99 {
100 requireNonNull( repository, "remote repository cannot be null" );
101
102 PrioritizedComponents<TransporterFactory> factories = new PrioritizedComponents<TransporterFactory>( session );
103 for ( TransporterFactory factory : this.factories )
104 {
105 factories.add( factory, factory.getPriority() );
106 }
107
108 List<NoTransporterException> errors = new ArrayList<NoTransporterException>();
109 for ( PrioritizedComponent<TransporterFactory> factory : factories.getEnabled() )
110 {
111 try
112 {
113 Transporter transporter = factory.getComponent().newInstance( session, repository );
114
115 if ( logger.isDebugEnabled() )
116 {
117 StringBuilder buffer = new StringBuilder( 256 );
118 buffer.append( "Using transporter " ).append( transporter.getClass().getSimpleName() );
119 Utils.appendClassLoader( buffer, transporter );
120 buffer.append( " with priority " ).append( factory.getPriority() );
121 buffer.append( " for " ).append( repository.getUrl() );
122 logger.debug( buffer.toString() );
123 }
124
125 return transporter;
126 }
127 catch ( NoTransporterException e )
128 {
129
130 errors.add( e );
131 }
132 }
133 if ( logger.isDebugEnabled() && errors.size() > 1 )
134 {
135 String msg = "Could not obtain transporter factory for " + repository;
136 for ( Exception e : errors )
137 {
138 logger.debug( msg, e );
139 }
140 }
141
142 StringBuilder buffer = new StringBuilder( 256 );
143 if ( factories.isEmpty() )
144 {
145 buffer.append( "No transporter factories registered" );
146 }
147 else
148 {
149 buffer.append( "Cannot access " ).append( repository.getUrl() );
150 buffer.append( " using the registered transporter factories: " );
151 factories.list( buffer );
152 }
153
154 throw new NoTransporterException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 ) : null );
155 }
156
157 }