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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.cloudstack.features;

import java.util.Map;
import java.util.Set;

import javax.inject.Named;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;

import org.jclouds.Fallbacks.EmptySetOnNotFoundOr404;
import org.jclouds.Fallbacks.NullOnNotFoundOr404;
import org.jclouds.cloudstack.domain.OSType;
import org.jclouds.cloudstack.filters.AuthenticationFilter;
import org.jclouds.cloudstack.functions.ParseIdToNameEntryFromHttpResponse;
import org.jclouds.cloudstack.functions.ParseIdToNameFromHttpResponse;
import org.jclouds.cloudstack.options.ListOSTypesOptions;
import org.jclouds.rest.annotations.Fallback;
import org.jclouds.rest.annotations.OnlyElement;
import org.jclouds.rest.annotations.QueryParams;
import org.jclouds.rest.annotations.RequestFilters;
import org.jclouds.rest.annotations.ResponseParser;
import org.jclouds.rest.annotations.SelectJson;

/**
 * Provides synchronous access to cloudstack via their REST API.
 * 
 * 
 * @see 
 */
@RequestFilters(AuthenticationFilter.class)
@QueryParams(keys = "response", values = "json")
public interface GuestOSApi {

   /**
    * Lists all supported OS types for this cloud.
    * 
    * @param options
    *           if present, how to constrain the list
    * @return os types matching query, or empty set, if no types are found
    */
   @Named("listOsTypes")
   @GET
   @QueryParams(keys = { "command", "listAll" }, values = { "listOsTypes", "true" })
   @SelectJson("ostype")
   @Consumes(MediaType.APPLICATION_JSON)
   @Fallback(EmptySetOnNotFoundOr404.class)
   Set listOSTypes(ListOSTypesOptions... options);

   /**
    * get a specific os type by id
    * 
    * @param id
    *           os type to get
    * @return os type or null if not found
    */
   @Named("listOsTypes")
   @GET
   @QueryParams(keys = { "command", "listAll" }, values = { "listOsTypes", "true" })
   @SelectJson("ostype")
   @OnlyElement
   @Consumes(MediaType.APPLICATION_JSON)
   @Fallback(NullOnNotFoundOr404.class)
   OSType getOSType(@QueryParam("id") String id);

   /**
    * Lists all supported OS categories for this cloud.
    * 
    * @return os categories matching query, or empty set, if no categories are
    *         found
    */
   @Named("listOsCategories")
   @GET
   @QueryParams(keys = { "command", "listAll" }, values = { "listOsCategories", "true" })
   @ResponseParser(ParseIdToNameFromHttpResponse.class)
   @Fallback(EmptySetOnNotFoundOr404.class)
   Map listOSCategories();

   /**
    * get a specific os category by id
    * 
    * @param id
    *           os category to get
    * @return os category or null if not found
    */
   @Named("listOsCategories")
   @GET
   @QueryParams(keys = { "command", "listAll" }, values = { "listOsCategories", "true" })
   @ResponseParser(ParseIdToNameEntryFromHttpResponse.class)
   @Fallback(NullOnNotFoundOr404.class)
   Map.Entry getOSCategory(@QueryParam("id") String id);

}