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; 030 031import org.eclipse.aether.RepositorySystemSession; 032import org.eclipse.aether.impl.RepositoryConnectorProvider; 033import org.eclipse.aether.repository.Authentication; 034import org.eclipse.aether.repository.Proxy; 035import org.eclipse.aether.repository.RemoteRepository; 036import org.eclipse.aether.spi.connector.RepositoryConnector; 037import org.eclipse.aether.spi.connector.RepositoryConnectorFactory; 038import org.eclipse.aether.spi.locator.Service; 039import org.eclipse.aether.spi.locator.ServiceLocator; 040import org.eclipse.aether.transfer.NoRepositoryConnectorException; 041import org.slf4j.Logger; 042import org.slf4j.LoggerFactory; 043 044/** 045 */ 046@Named 047public class DefaultRepositoryConnectorProvider 048 implements RepositoryConnectorProvider, Service 049{ 050 051 private static final Logger LOGGER = LoggerFactory.getLogger( DefaultRepositoryConnectorProvider.class ); 052 053 private Collection<RepositoryConnectorFactory> connectorFactories = new ArrayList<>(); 054 055 public DefaultRepositoryConnectorProvider() 056 { 057 // enables default constructor 058 } 059 060 @Inject 061 DefaultRepositoryConnectorProvider( Set<RepositoryConnectorFactory> connectorFactories ) 062 { 063 setRepositoryConnectorFactories( connectorFactories ); 064 } 065 066 public void initService( ServiceLocator locator ) 067 { 068 connectorFactories = locator.getServices( RepositoryConnectorFactory.class ); 069 } 070 071 public DefaultRepositoryConnectorProvider addRepositoryConnectorFactory( RepositoryConnectorFactory factory ) 072 { 073 connectorFactories.add( requireNonNull( factory, "repository connector factory cannot be null" ) ); 074 return this; 075 } 076 077 public DefaultRepositoryConnectorProvider setRepositoryConnectorFactories( 078 Collection<RepositoryConnectorFactory> factories ) 079 { 080 if ( factories == null ) 081 { 082 this.connectorFactories = new ArrayList<>(); 083 } 084 else 085 { 086 this.connectorFactories = factories; 087 } 088 return this; 089 } 090 091 public RepositoryConnector newRepositoryConnector( RepositorySystemSession session, RemoteRepository repository ) 092 throws NoRepositoryConnectorException 093 { 094 requireNonNull( repository, "remote repository cannot be null" ); 095 096 PrioritizedComponents<RepositoryConnectorFactory> factories = new PrioritizedComponents<>( session ); 097 for ( RepositoryConnectorFactory factory : this.connectorFactories ) 098 { 099 factories.add( factory, factory.getPriority() ); 100 } 101 102 List<NoRepositoryConnectorException> errors = new ArrayList<>(); 103 for ( PrioritizedComponent<RepositoryConnectorFactory> factory : factories.getEnabled() ) 104 { 105 try 106 { 107 RepositoryConnector connector = factory.getComponent().newInstance( session, repository ); 108 109 if ( LOGGER.isDebugEnabled() ) 110 { 111 StringBuilder buffer = new StringBuilder( 256 ); 112 buffer.append( "Using connector " ).append( connector.getClass().getSimpleName() ); 113 Utils.appendClassLoader( buffer, connector ); 114 buffer.append( " with priority " ).append( factory.getPriority() ); 115 buffer.append( " for " ).append( repository.getUrl() ); 116 117 Authentication auth = repository.getAuthentication(); 118 if ( auth != null ) 119 { 120 buffer.append( " with " ).append( auth ); 121 } 122 123 Proxy proxy = repository.getProxy(); 124 if ( proxy != null ) 125 { 126 buffer.append( " via " ).append( proxy.getHost() ).append( ':' ).append( proxy.getPort() ); 127 128 auth = proxy.getAuthentication(); 129 if ( auth != null ) 130 { 131 buffer.append( " with " ).append( auth ); 132 } 133 } 134 135 LOGGER.debug( buffer.toString() ); 136 } 137 138 return connector; 139 } 140 catch ( NoRepositoryConnectorException e ) 141 { 142 // continue and try next factory 143 errors.add( e ); 144 } 145 } 146 if ( LOGGER.isDebugEnabled() && errors.size() > 1 ) 147 { 148 String msg = "Could not obtain connector factory for " + repository; 149 for ( Exception e : errors ) 150 { 151 LOGGER.debug( msg, e ); 152 } 153 } 154 155 StringBuilder buffer = new StringBuilder( 256 ); 156 if ( factories.isEmpty() ) 157 { 158 buffer.append( "No connector factories available" ); 159 } 160 else 161 { 162 buffer.append( "Cannot access " ).append( repository.getUrl() ); 163 buffer.append( " with type " ).append( repository.getContentType() ); 164 buffer.append( " using the available connector factories: " ); 165 factories.list( buffer ); 166 } 167 168 throw new NoRepositoryConnectorException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 ) 169 : null ); 170 } 171 172}