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.LocalRepositoryProvider; 034import org.eclipse.aether.repository.LocalRepository; 035import org.eclipse.aether.repository.LocalRepositoryManager; 036import org.eclipse.aether.repository.NoLocalRepositoryManagerException; 037import org.eclipse.aether.spi.localrepo.LocalRepositoryManagerFactory; 038import org.eclipse.aether.spi.locator.Service; 039import org.eclipse.aether.spi.locator.ServiceLocator; 040import org.slf4j.Logger; 041import org.slf4j.LoggerFactory; 042 043/** 044 */ 045@Singleton 046@Named 047public class DefaultLocalRepositoryProvider 048 implements LocalRepositoryProvider, Service 049{ 050 051 private static final Logger LOGGER = LoggerFactory.getLogger( DefaultLocalRepositoryProvider.class ); 052 053 private Collection<LocalRepositoryManagerFactory> managerFactories = new ArrayList<>(); 054 055 public DefaultLocalRepositoryProvider() 056 { 057 // enables default constructor 058 } 059 060 @Inject 061 DefaultLocalRepositoryProvider( Set<LocalRepositoryManagerFactory> factories ) 062 { 063 setLocalRepositoryManagerFactories( factories ); 064 } 065 066 public void initService( ServiceLocator locator ) 067 { 068 setLocalRepositoryManagerFactories( locator.getServices( LocalRepositoryManagerFactory.class ) ); 069 } 070 071 public DefaultLocalRepositoryProvider addLocalRepositoryManagerFactory( LocalRepositoryManagerFactory factory ) 072 { 073 managerFactories.add( requireNonNull( factory, "local repository manager factory cannot be null" ) ); 074 return this; 075 } 076 077 public DefaultLocalRepositoryProvider setLocalRepositoryManagerFactories( 078 Collection<LocalRepositoryManagerFactory> factories ) 079 { 080 if ( factories == null ) 081 { 082 managerFactories = new ArrayList<>( 2 ); 083 } 084 else 085 { 086 managerFactories = factories; 087 } 088 return this; 089 } 090 091 public LocalRepositoryManager newLocalRepositoryManager( RepositorySystemSession session, 092 LocalRepository repository ) 093 throws NoLocalRepositoryManagerException 094 { 095 requireNonNull( session, "session cannot be null" ); 096 requireNonNull( repository, "repository cannot be null" ); 097 PrioritizedComponents<LocalRepositoryManagerFactory> factories = new PrioritizedComponents<>( session ); 098 for ( LocalRepositoryManagerFactory factory : this.managerFactories ) 099 { 100 factories.add( factory, factory.getPriority() ); 101 } 102 103 List<NoLocalRepositoryManagerException> errors = new ArrayList<>(); 104 for ( PrioritizedComponent<LocalRepositoryManagerFactory> factory : factories.getEnabled() ) 105 { 106 try 107 { 108 LocalRepositoryManager manager = factory.getComponent().newInstance( session, repository ); 109 110 if ( LOGGER.isDebugEnabled() ) 111 { 112 StringBuilder buffer = new StringBuilder( 256 ); 113 buffer.append( "Using manager " ).append( manager.getClass().getSimpleName() ); 114 Utils.appendClassLoader( buffer, manager ); 115 buffer.append( " with priority " ).append( factory.getPriority() ); 116 buffer.append( " for " ).append( repository.getBasedir() ); 117 118 LOGGER.debug( buffer.toString() ); 119 } 120 121 return manager; 122 } 123 catch ( NoLocalRepositoryManagerException e ) 124 { 125 // continue and try next factory 126 errors.add( e ); 127 } 128 } 129 if ( LOGGER.isDebugEnabled() && errors.size() > 1 ) 130 { 131 for ( Exception e : errors ) 132 { 133 LOGGER.debug( "Could not obtain local repository manager for {}", repository, e ); 134 } 135 } 136 137 StringBuilder buffer = new StringBuilder( 256 ); 138 if ( factories.isEmpty() ) 139 { 140 buffer.append( "No local repository managers registered" ); 141 } 142 else 143 { 144 buffer.append( "Cannot access " ).append( repository.getBasedir() ); 145 buffer.append( " with type " ).append( repository.getContentType() ); 146 buffer.append( " using the available factories " ); 147 factories.list( buffer ); 148 } 149 150 throw new NoLocalRepositoryManagerException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 ) 151 : null ); 152 } 153 154}