/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds 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;
}
}