001package org.eclipse.aether.internal.impl; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import java.util.ArrayList; 023import java.util.Collection; 024import java.util.List; 025import static java.util.Objects.requireNonNull; 026import java.util.Set; 027 028import javax.inject.Inject; 029import javax.inject.Named; 030import javax.inject.Singleton; 031 032import org.eclipse.aether.RepositorySystemSession; 033import org.eclipse.aether.impl.RepositoryConnectorProvider; 034import org.eclipse.aether.repository.Authentication; 035import org.eclipse.aether.repository.Proxy; 036import org.eclipse.aether.repository.RemoteRepository; 037import org.eclipse.aether.spi.connector.RepositoryConnector; 038import org.eclipse.aether.spi.connector.RepositoryConnectorFactory; 039import org.eclipse.aether.spi.locator.Service; 040import org.eclipse.aether.spi.locator.ServiceLocator; 041import org.eclipse.aether.transfer.NoRepositoryConnectorException; 042import org.slf4j.Logger; 043import org.slf4j.LoggerFactory; 044 045/** 046 */ 047@Singleton 048@Named 049public class DefaultRepositoryConnectorProvider 050 implements RepositoryConnectorProvider, Service 051{ 052 053 private static final Logger LOGGER = LoggerFactory.getLogger( DefaultRepositoryConnectorProvider.class ); 054 055 private Collection<RepositoryConnectorFactory> connectorFactories = new ArrayList<>(); 056 057 public DefaultRepositoryConnectorProvider() 058 { 059 // enables default constructor 060 } 061 062 @Inject 063 DefaultRepositoryConnectorProvider( Set<RepositoryConnectorFactory> connectorFactories ) 064 { 065 setRepositoryConnectorFactories( connectorFactories ); 066 } 067 068 public void initService( ServiceLocator locator ) 069 { 070 connectorFactories = locator.getServices( RepositoryConnectorFactory.class ); 071 } 072 073 public DefaultRepositoryConnectorProvider addRepositoryConnectorFactory( RepositoryConnectorFactory factory ) 074 { 075 connectorFactories.add( requireNonNull( factory, "repository connector factory cannot be null" ) ); 076 return this; 077 } 078 079 public DefaultRepositoryConnectorProvider setRepositoryConnectorFactories( 080 Collection<RepositoryConnectorFactory> factories ) 081 { 082 if ( factories == null ) 083 { 084 this.connectorFactories = new ArrayList<>(); 085 } 086 else 087 { 088 this.connectorFactories = factories; 089 } 090 return this; 091 } 092 093 public RepositoryConnector newRepositoryConnector( RepositorySystemSession session, RemoteRepository repository ) 094 throws NoRepositoryConnectorException 095 { 096 requireNonNull( repository, "remote repository cannot be null" ); 097 098 PrioritizedComponents<RepositoryConnectorFactory> factories = new PrioritizedComponents<>( session ); 099 for ( RepositoryConnectorFactory factory : this.connectorFactories ) 100 { 101 factories.add( factory, factory.getPriority() ); 102 } 103 104 List<NoRepositoryConnectorException> errors = new ArrayList<>(); 105 for ( PrioritizedComponent<RepositoryConnectorFactory> factory : factories.getEnabled() ) 106 { 107 try 108 { 109 RepositoryConnector connector = factory.getComponent().newInstance( session, repository ); 110 111 if ( LOGGER.isDebugEnabled() ) 112 { 113 StringBuilder buffer = new StringBuilder( 256 ); 114 buffer.append( "Using connector " ).append( connector.getClass().getSimpleName() ); 115 Utils.appendClassLoader( buffer, connector ); 116 buffer.append( " with priority " ).append( factory.getPriority() ); 117 buffer.append( " for " ).append( repository.getUrl() ); 118 119 Authentication auth = repository.getAuthentication(); 120 if ( auth != null ) 121 { 122 buffer.append( " with " ).append( auth ); 123 } 124 125 Proxy proxy = repository.getProxy(); 126 if ( proxy != null ) 127 { 128 buffer.append( " via " ).append( proxy.getHost() ).append( ':' ).append( proxy.getPort() ); 129 130 auth = proxy.getAuthentication(); 131 if ( auth != null ) 132 { 133 buffer.append( " with " ).append( auth ); 134 } 135 } 136 137 LOGGER.debug( buffer.toString() ); 138 } 139 140 return connector; 141 } 142 catch ( NoRepositoryConnectorException e ) 143 { 144 // continue and try next factory 145 errors.add( e ); 146 } 147 } 148 if ( LOGGER.isDebugEnabled() && errors.size() > 1 ) 149 { 150 for ( Exception e : errors ) 151 { 152 LOGGER.debug( "Could not obtain connector factory for {}", repository, e ); 153 } 154 } 155 156 StringBuilder buffer = new StringBuilder( 256 ); 157 if ( factories.isEmpty() ) 158 { 159 buffer.append( "No connector factories available" ); 160 } 161 else 162 { 163 buffer.append( "Cannot access " ).append( repository.getUrl() ); 164 buffer.append( " with type " ).append( repository.getContentType() ); 165 buffer.append( " using the available connector factories: " ); 166 factories.list( buffer ); 167 } 168 169 throw new NoRepositoryConnectorException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 ) 170 : null ); 171 } 172 173}