apis/ec2/src/main/java/org/jclouds/ec2/services/AvailabilityZoneAndRegionAsyncClient.java

/**
 * 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.ec2.services;

import static org.jclouds.aws.reference.FormParameters.ACTION;
import static org.jclouds.aws.reference.FormParameters.VERSION;

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

import javax.ws.rs.POST;
import javax.ws.rs.Path;

import org.jclouds.aws.filters.FormSigner;
import org.jclouds.ec2.EC2AsyncClient;
import org.jclouds.ec2.domain.AvailabilityZoneInfo;
import org.jclouds.ec2.options.DescribeAvailabilityZonesOptions;
import org.jclouds.ec2.options.DescribeRegionsOptions;
import org.jclouds.ec2.xml.DescribeAvailabilityZonesResponseHandler;
import org.jclouds.ec2.xml.DescribeRegionsResponseHandler;
import org.jclouds.javax.annotation.Nullable;
import org.jclouds.location.functions.RegionToEndpointOrProviderIfNull;
import org.jclouds.rest.annotations.EndpointParam;
import org.jclouds.rest.annotations.ExceptionParser;
import org.jclouds.rest.annotations.FormParams;
import org.jclouds.rest.annotations.RequestFilters;
import org.jclouds.rest.annotations.VirtualHost;
import org.jclouds.rest.annotations.XMLResponseParser;
import org.jclouds.rest.functions.ReturnEmptySetOnNotFoundOr404;

import com.google.common.util.concurrent.ListenableFuture;

/**
 * Provides access to EC2 Availability Zones and Regions via their REST API.
 * <p/>
 * 
 * @author Adrian Cole
 */
@RequestFilters(FormSigner.class)
@FormParams(keys = VERSION, values = EC2AsyncClient.VERSION)
@VirtualHost
public interface AvailabilityZoneAndRegionAsyncClient {

   /**
    * @see AvailabilityZoneAndRegionClient#describeAvailabilityZonesInRegion
    */
   @POST
   @Path("/")
   @FormParams(keys = ACTION, values = "DescribeAvailabilityZones")
   @XMLResponseParser(DescribeAvailabilityZonesResponseHandler.class)
   @ExceptionParser(ReturnEmptySetOnNotFoundOr404.class)
   ListenableFuture<? extends Set<AvailabilityZoneInfo>> describeAvailabilityZonesInRegion(
            @EndpointParam(parser = RegionToEndpointOrProviderIfNull.class) @Nullable String region,
            DescribeAvailabilityZonesOptions... options);

   /**
    * @see AvailabilityZoneAndRegionClient#describeRegions
    */
   @POST
   @Path("/")
   @FormParams(keys = ACTION, values = "DescribeRegions")
   @XMLResponseParser(DescribeRegionsResponseHandler.class)
   ListenableFuture<? extends Map<String, URI>> describeRegions(DescribeRegionsOptions... options);

}