| package org.eclipse.aether.internal.impl; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import static java.util.Objects.requireNonNull; |
| import java.util.Set; |
| |
| import javax.inject.Inject; |
| import javax.inject.Named; |
| |
| import org.eclipse.aether.RepositorySystemSession; |
| import org.eclipse.aether.repository.RemoteRepository; |
| import org.eclipse.aether.spi.connector.transport.Transporter; |
| import org.eclipse.aether.spi.connector.transport.TransporterFactory; |
| import org.eclipse.aether.spi.connector.transport.TransporterProvider; |
| import org.eclipse.aether.spi.locator.Service; |
| import org.eclipse.aether.spi.locator.ServiceLocator; |
| import org.eclipse.aether.transfer.NoTransporterException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| */ |
| @Named |
| public final class DefaultTransporterProvider |
| implements TransporterProvider, Service |
| { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger( DefaultTransporterProvider.class ); |
| |
| private Collection<TransporterFactory> factories = new ArrayList<>(); |
| |
| public DefaultTransporterProvider() |
| { |
| // enables default constructor |
| } |
| |
| @Inject |
| DefaultTransporterProvider( Set<TransporterFactory> transporterFactories ) |
| { |
| setTransporterFactories( transporterFactories ); |
| } |
| |
| public void initService( ServiceLocator locator ) |
| { |
| setTransporterFactories( locator.getServices( TransporterFactory.class ) ); |
| } |
| |
| public DefaultTransporterProvider addTransporterFactory( TransporterFactory factory ) |
| { |
| factories.add( requireNonNull( factory, "transporter factory cannot be null" ) ); |
| return this; |
| } |
| |
| public DefaultTransporterProvider setTransporterFactories( Collection<TransporterFactory> factories ) |
| { |
| if ( factories == null ) |
| { |
| this.factories = new ArrayList<>(); |
| } |
| else |
| { |
| this.factories = factories; |
| } |
| return this; |
| } |
| |
| public Transporter newTransporter( RepositorySystemSession session, RemoteRepository repository ) |
| throws NoTransporterException |
| { |
| requireNonNull( repository, "remote repository cannot be null" ); |
| |
| PrioritizedComponents<TransporterFactory> factories = new PrioritizedComponents<>( session ); |
| for ( TransporterFactory factory : this.factories ) |
| { |
| factories.add( factory, factory.getPriority() ); |
| } |
| |
| List<NoTransporterException> errors = new ArrayList<>(); |
| for ( PrioritizedComponent<TransporterFactory> factory : factories.getEnabled() ) |
| { |
| try |
| { |
| Transporter transporter = factory.getComponent().newInstance( session, repository ); |
| |
| if ( LOGGER.isDebugEnabled() ) |
| { |
| StringBuilder buffer = new StringBuilder( 256 ); |
| buffer.append( "Using transporter " ).append( transporter.getClass().getSimpleName() ); |
| Utils.appendClassLoader( buffer, transporter ); |
| buffer.append( " with priority " ).append( factory.getPriority() ); |
| buffer.append( " for " ).append( repository.getUrl() ); |
| LOGGER.debug( buffer.toString() ); |
| } |
| |
| return transporter; |
| } |
| catch ( NoTransporterException e ) |
| { |
| // continue and try next factory |
| errors.add( e ); |
| } |
| } |
| if ( LOGGER.isDebugEnabled() && errors.size() > 1 ) |
| { |
| String msg = "Could not obtain transporter factory for " + repository; |
| for ( Exception e : errors ) |
| { |
| LOGGER.debug( msg, e ); |
| } |
| } |
| |
| StringBuilder buffer = new StringBuilder( 256 ); |
| if ( factories.isEmpty() ) |
| { |
| buffer.append( "No transporter factories registered" ); |
| } |
| else |
| { |
| buffer.append( "Cannot access " ).append( repository.getUrl() ); |
| buffer.append( " using the registered transporter factories: " ); |
| factories.list( buffer ); |
| } |
| |
| throw new NoTransporterException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 ) : null ); |
| } |
| |
| } |