/*
* 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.
*/
package org.jclouds.openstack.keystone.v1_1.functions;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.jclouds.location.Provider;
import org.jclouds.openstack.keystone.v1_1.domain.Endpoint;
import com.google.common.net.InternetDomainName;
@Singleton
public class RegionFirstPartOfDNSNameOrProvider implements EndpointToRegion {
private final String provider;
@Inject
RegionFirstPartOfDNSNameOrProvider(@Provider String provider) {
this.provider = provider;
}
@Override
public String apply(Endpoint input) {
if (input.getRegion() != null)
return input.getRegion();
String host = input.getPublicURL().getHost();
if (InternetDomainName.isValid(host)) {
InternetDomainName domain = InternetDomainName.from(host);
return domain.parts().get(0);
}
return provider;
}
}