/*************************************************************************
* (c) Copyright 2016 Hewlett Packard Enterprise Development Company LP
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
************************************************************************/
package com.eucalyptus.portal.provider;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import com.eucalyptus.auth.principal.User;
import com.eucalyptus.portal.common.provider.TagProvider;
import com.google.common.collect.Maps;
/**
*
*/
public class TagProviders {
private static final Map<String,TagProvider> providers = Maps.newConcurrentMap( );
static boolean register( final TagProvider provider ) {
return providers.putIfAbsent( provider.getVendor( ), provider ) == null;
}
public static Set<String> getTagKeys( final User user ) {
return providers.values( ).stream( )
.flatMap( provider -> provider.getTagKeys( user ).stream( ) )
.collect( Collectors.toSet( ) );
}
}