public async Task StopAsync(HostInfo host, TimeSpan cooldown)
{
Validate.NotNull(host, nameof(host));
if (host.ClusterId > 0)
{
var cluster = await clusterService.GetAsync(host.ClusterId);
await clusterManager.DeregisterHostAsync(cluster, host);
await Task.Delay(cooldown); // wait to allow the connections to drain from the load balancer
}
await ec2.StopInstancesAsync(new StopInstancesRequest(host.ResourceId));
await TransitionStateAsync(host, HostStatus.Stopped);
}