/// <summary>
/// Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer.
/// There must be at least one Availability Zone registered with a load balancer at all times. After an Availability Zone is removed,
/// all instances registered with the load balancer that are in the removed Availability Zone go into the OutOfService state.
/// Then, the load balancer attempts to equally balance the traffic among its remaining Availability Zones.
/// </summary>
/// <param name="loadBalancer">The name associated with the load balancer.</param>
/// <param name="zones">The Availability Zones to remove from the load balancer.</param>
/// <param name="settings">The <see cref="LoadBalancingSettings"/> used during the request to AWS.</param>
/// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
public async Task <bool> DisableAvailabilityZones(string loadBalancer, IList <string> zones, LoadBalancingSettings settings, CancellationToken cancellationToken = default(CancellationToken))
{
if (String.IsNullOrEmpty(loadBalancer))
{
throw new ArgumentNullException("loadBalancer");
}
if ((zones == null) || (zones.Count == 0))
{
throw new ArgumentNullException("zones");
}
//Create Request
AmazonElasticLoadBalancingClient client = this.CreateClient(settings);
DisableAvailabilityZonesForLoadBalancerRequest request = new DisableAvailabilityZonesForLoadBalancerRequest();
request.LoadBalancerName = loadBalancer;
foreach (string zone in zones)
{
request.AvailabilityZones.Add(zone);
}
//Check Response
DisableAvailabilityZonesForLoadBalancerResponse response = await client.DisableAvailabilityZonesForLoadBalancerAsync(request, cancellationToken);
if (response.HttpStatusCode == HttpStatusCode.OK)
{
_Log.Verbose("Successfully disabled zones '{0}'", string.Join(",", zones));
return(true);
}
else
{
_Log.Error("Failed to disabled zones '{0}'", string.Join(",", zones));
return(false);
}
}