package org.eclipse.aether.internal.impl;
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.layout.RepositoryLayout;
import org.eclipse.aether.spi.connector.layout.RepositoryLayoutFactory;
import org.eclipse.aether.spi.connector.layout.RepositoryLayoutProvider;
import org.eclipse.aether.spi.locator.Service;
import org.eclipse.aether.spi.locator.ServiceLocator;
import org.eclipse.aether.transfer.NoRepositoryLayoutException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Named
public final class DefaultRepositoryLayoutProvider
implements RepositoryLayoutProvider, Service
{
private static final Logger LOGGER = LoggerFactory.getLogger( DefaultRepositoryLayoutProvider.class );
private Collection<RepositoryLayoutFactory> factories = new ArrayList<>();
public DefaultRepositoryLayoutProvider()
{
}
@Inject
DefaultRepositoryLayoutProvider( Set<RepositoryLayoutFactory> layoutFactories )
{
setRepositoryLayoutFactories( layoutFactories );
}
public void initService( ServiceLocator locator )
{
setRepositoryLayoutFactories( locator.getServices( RepositoryLayoutFactory.class ) );
}
public DefaultRepositoryLayoutProvider addRepositoryLayoutFactory( RepositoryLayoutFactory factory )
{
factories.add( requireNonNull( factory, "layout factory cannot be null" ) );
return this;
}
public DefaultRepositoryLayoutProvider setRepositoryLayoutFactories( Collection<RepositoryLayoutFactory> factories )
{
if ( factories == null )
{
this.factories = new ArrayList<>();
}
else
{
this.factories = factories;
}
return this;
}
public RepositoryLayout newRepositoryLayout( RepositorySystemSession session, RemoteRepository repository )
throws NoRepositoryLayoutException
{
requireNonNull( repository, "remote repository cannot be null" );
PrioritizedComponents<RepositoryLayoutFactory> factories = new PrioritizedComponents<>( session );
for ( RepositoryLayoutFactory factory : this.factories )
{
factories.add( factory, factory.getPriority() );
}
List<NoRepositoryLayoutException> errors = new ArrayList<>();
for ( PrioritizedComponent<RepositoryLayoutFactory> factory : factories.getEnabled() )
{
try
{
return factory.getComponent().newInstance( session, repository );
}
catch ( NoRepositoryLayoutException e )
{
errors.add( e );
}
}
if ( LOGGER.isDebugEnabled() && errors.size() > 1 )
{
for ( Exception e : errors )
{
LOGGER.debug( "Could not obtain layout factory for {}", repository, e );
}
}
StringBuilder buffer = new StringBuilder( 256 );
if ( factories.isEmpty() )
{
buffer.append( "No layout factories registered" );
}
else
{
buffer.append( "Cannot access " ).append( repository.getUrl() );
buffer.append( " with type " ).append( repository.getContentType() );
buffer.append( " using the available layout factories: " );
factories.list( buffer );
}
throw new NoRepositoryLayoutException( repository, buffer.toString(), errors.size() == 1 ? errors.get( 0 )
: null );
}
}