com.huawei.openstack4j.openstack.identity.internal.AbstractEndpointURLResolver Maven / Gradle / Ivy

 /*******************************************************************************
 * 	Copyright 2018 Huawei Technologies Co.,Ltd.                                         
 * 	                                                                                 
 * 	Licensed 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 com.huawei.openstack4j.openstack.identity.internal;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.huawei.openstack4j.api.identity.EndpointURLResolver;
import com.huawei.openstack4j.api.types.Facing;
import com.huawei.openstack4j.api.types.ServiceType;

/**
 * Resolves an Endpoint URL based on the Service Type and Facing perspective
 *
 * @author Jeremy Unruh
 */
public abstract class AbstractEndpointURLResolver implements EndpointURLResolver {

	protected static final Map CACHE = new ConcurrentHashMap();


	public static final class Key {
		
		private final String uid;
		private final ServiceType type;
		private final Facing perspective;

		private Key(String uid, ServiceType type, Facing perspective) {
			this.type = type;
			this.perspective = perspective;
			this.uid = uid;
		}

		static Key of(String uid, ServiceType type, Facing perspective, String region) {
			return new Key((region == null) ? uid : uid + region, type, perspective);
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + ((perspective == null) ? 0 : perspective.hashCode());
			result = prime * result + ((type == null) ? 0 : type.hashCode());
			result = prime * result + ((uid == null) ? 0 : uid.hashCode());
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Key other = (Key) obj;
			if (perspective != other.perspective)
				return false;
			if (type != other.type)
				return false;
			if (uid == null) {
				if (other.uid != null)
					return false;
			} else if (!uid.equals(other.uid))
				return false;
			return true;
		}
	}

}