Support Service discovery in ECS

[kraigor]

Hi,
it seems like there's no way to relate Discovery Service to Ec2Service. Are there any plans on implementing this?
Thanks

[rix0rrr]

You're right that we don't have support for this yet. It will come eventually but I cannot give you a date on it just yet.

cc @SoManyHs

[kraigor]

@rix0rrr thanks for the information.
I found a workaround, here's an example (I hope it may be useful to somebody):

var ns = new dis.CfnPrivateDnsNamespace(...
var discovery = new dis.CfnService(...
var service = new ecs.Ec2Service(...

var hook = ((<any>service).resource as ecs.CfnService);
hook.propertyOverrides.serviceRegistries = [{
    registryArn: discovery.serviceArn
}];

[nacitar]

An example workaround with the cfn escape hatch in c#:

// Assumes service and discoveryService are both defined.

// ABRITRARY BLOCK; ServiceRegistries isn't exposed in the cdk constructs
// https://github.com/aws/aws-cdk/issues/1554
{
    ECS.CfnService cfnService = service.Node.DefaultChild as ECS.CfnService
        ?? throw new Exception("If you see this, ECS.Ec2Service no longer wraps ECS.CfnService.");
    cfnService.ServiceRegistries = new[] {
        new ECS.CfnService.ServiceRegistryProperty {
            Port = 12345,
            RegistryArn = discoveryService.ServiceArn
        }
    };
}

The arbitrary block keeps the workaround from polluting the enclosing namespace.