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Core components to access jclouds services
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/*
 * 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.providers;

import java.net.URI;
import java.util.Properties;
import java.util.Set;

import org.jclouds.apis.ApiMetadata;
import org.jclouds.javax.annotation.Nullable;

import com.google.common.base.Optional;

/**
 * The ProviderMetadata interface allows jclouds to provide a plugin framework
 * for gathering cloud provider metadata.
 */
public interface ProviderMetadata {
  
   /**
    * 
    * @since 1.5
    */
   public interface Builder {
      /**
       * @see ProviderMetadata#getId()
       */
      Builder id(String id);

      /**
       * @see ProviderMetadata#getName()
       */
      Builder name(String name);

      /**
       * @see ProviderMetadata#getApiMetadata()
       */
      Builder apiMetadata(ApiMetadata api);

      /**
       * @see ProviderMetadata#getEndpoint()
       */
      Builder endpoint(String endpoint);

      /**
       * @see ProviderMetadata#getDefaultProperties()
       */
      Builder defaultProperties(Properties defaultProperties);

      /**
       * @see ProviderMetadata#getConsole()
       */
      Builder console(@Nullable URI console);

      /**
       * @see ProviderMetadata#getHomepage()
       */
      Builder homepage(@Nullable URI homepage);

      /**
       * @see ProviderMetadata#getLinkedServices()
       */
      Builder linkedServices(Iterable linkedServices);

      /**
       * @see ProviderMetadata#getLinkedServices()
       */
      Builder linkedServices(String... linkedServices);

      /**
       * @see ProviderMetadata#getLinkedServices()
       */
      Builder linkedService(String linkedService);

      /**
       * @see ProviderMetadata#getIso3166Code()
       */
      Builder iso3166Codes(Iterable iso3166Codes);

      /**
       * @see ProviderMetadata#getIso3166Code()
       */
      Builder iso3166Codes(String... iso3166Codes);

      /**
       * @see ProviderMetadata#getIso3166Code()
       */
      Builder iso3166Code(String iso3166Code);

      ProviderMetadata build();

      Builder fromProviderMetadata(ProviderMetadata in);

   }

   /**
    * @see Builder
    * @since 1.5
    */
   Builder toBuilder();

   /**
    * 
    * @return the provider's unique identifier (ex. aws-ec2, rackspace-cloudservers-us)
    */
   String getId();

   /**
    * 
    * @return the name (display name) of the provider (ex. GoGrid)
    */
   String getName();

   /**
    * 
    * @return the provider's api
    * @since 1.5
    */
   ApiMetadata getApiMetadata();

   /**
    * @see ApiMetadata#getEndpoint
    * @return the url for the provider's api
    */
   String getEndpoint();

   /**
    * Configuration Properties used when creating connections to this provider.
    * For example, location information, or default networking configuration.
    * 
    * @return properties used to create connections to this provider
    * @see ApiMetadata#getDefaultProperties
    */
   Properties getDefaultProperties();

   /**
    * 
    * @return the url for the provider's console, or absent if one doesn't exist
    */
   Optional getConsole();

   /**
    * 
    * @return the url for the provider's homepage, or absent if unknown
    */
   Optional getHomepage();

   /**
    * 
    * @return ids of all known {@link ProviderMetadata providers} which have the
    *         same account as this.
    */
   Set getLinkedServices();

   /**
    * iso 3166 codes; ex. US-CA,US
    * 
    * @return all known region/location ISO 3166 codes
    */
   Set getIso3166Codes();
}