private Amazon.ElasticLoadBalancingV2.Model.DescribeTargetHealthResponse CallAWSServiceOperation(IAmazonElasticLoadBalancingV2 client, Amazon.ElasticLoadBalancingV2.Model.DescribeTargetHealthRequest request)
{
Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Elastic Load Balancing V2", "DescribeTargetHealth");
try
{
#if DESKTOP
return(client.DescribeTargetHealth(request));
#elif CORECLR
return(client.DescribeTargetHealthAsync(request).GetAwaiter().GetResult());
#else
#error "Unknown build edition"
#endif
}
catch (AmazonServiceException exc)
{
var webException = exc.InnerException as System.Net.WebException;
if (webException != null)
{
throw new Exception(Utils.Common.FormatNameResolutionFailureMessage(client.Config, webException.Message), webException);
}
throw;
}
}
public async Task <Response> Handle(SNSEvent snsRequest, CancellationToken cancellationToken = default)
{
var request = requestFactory.CreateFromSnsEvent(snsRequest);
logger.LogInformation($"Received transformed request: {JsonSerializer.Serialize(request)}");
var addresses = dnsResolver.Resolve(request.TargetDnsName).AddressList ?? new IPAddress[] { };
var targetHealthRequest = new DescribeTargetHealthRequest {
TargetGroupArn = request.TargetGroupArn
};
var targetHealthResponse = await elbClient.DescribeTargetHealthAsync(targetHealthRequest);
logger.LogInformation($"Got target health response: {JsonSerializer.Serialize(targetHealthResponse)}");
var targetHealthDescriptions = targetHealthResponse.TargetHealthDescriptions;
var healthyTargets = from target in targetHealthDescriptions where target.TargetHealth.State != TargetHealthStateEnum.Unhealthy select target.Target;
var unhealthyTargets = from target in targetHealthDescriptions where target.TargetHealth.State == TargetHealthStateEnum.Unhealthy select target.Target;
var newTargets = from address in addresses
where healthyTargets.All(target => !IPAddress.Parse(target.Id).Equals(address))
select new TargetDescription
{
Id = address.ToString(),
AvailabilityZone = "all",
Port = 80
};
await Task.WhenAll(new Task[]
{
DeregisterTargets(request.TargetGroupArn, unhealthyTargets),
RegisterTargets(request.TargetGroupArn, newTargets),
});
return(new Response
{
Success = true
});
}
