Struggling with a stack export, and a hosted zone ID. It works simply from the top level class, but not from a component, if I pull that property to the top level file. Example working:

hosted_zone = aws.route53.Zone(
    "myHostedZone",
    name="testzone.testing",  # replace with your domain name
)

pulumi.export("zone_id", hosted_zone.id)

Example, not working:

# a component class with this function, called from the constructor. 

    def create_private_zone(
        self: pulumi.ComponentResource,
        args: Route53ZoneArgs,
        opts: pulumi.ResourceOptions,
    ):
        zone = aws.route53.Zone(
            f"{args.domain_name}",
            name=args.domain_name,
            comment=args.comment,
            vpcs=[
                aws.route53.ZoneVpcArgs(vpc_id=args.vpc_id, vpc_region=args.vpc_region)
            ],
            force_destroy=args.force_destroy,
            tags=args.tags,
            opts=opts,
        )

        self.zone

and the usage:

publicAwsDomain = Route53Zone(
        "public-zone",
        Route53ZoneArgs(
            domain_name="aws.test.com",
        ),
    )

    pulumi.export(
        Outputs.PUBLIC_ZONE_ID, publicAwsDomain.zone.zone_id
    )

Gives me this error:

File "/Users/bswift/src/client/xxx/datacenter_migration/account/venv/lib/python3.11/site-packages/pulumi/runtime/stack.py", line 242, in <dictcomp>
        key: massage(attr[key], seen) for key in attr if not key.startswith("_")
                                                             ^^^^^^^^^^^^^^
    AttributeError: 'Outputs' object has no attribute 'startswith'

Could args.domain_name be an output? You can't use an output as a resource name. The name has to be known at runtime.

yes, singleVar can of course. That above was left from taking a clients name out of the front for the example 🙂 The domain name is not an output but just a string passed in. This one was rather dumb, but the output Enum I had overridden the string method - which works in most cases but not with pulumi outputs I guess.

class Outputs(Enum):
...

  def __str__(self):
      return str(self.value).

The error didn't really give me any stack trace on my line of code that would make sense.

You shouldn't need to wrap the entire thing in an apply. You can put the apply on the line where it's needed, inside the Record constructor args.

Trying to not complain too much, but it's a little odd. I have used CDK a lot more than Pulumi, and with CDK these "Tokens" as they're known are all handled seamlessly, and we don't end up with this type of situation of having to put things into async "ish" blocks. Just takes a bit more to wrap your head around I guess.

You shouldn't need that either.

i dunno, it was puking errors.

That usually happens when you're interpolating, or when you're passing the output into a function/method that casts the parameter to a string.

ok.

+ aws:route53/record:Record: (create)
        [urn=urn:pulumi:bswift::LB::aws:route53/record:Record::cnameRecord]
        [provider=urn:pulumi:bswift::LB::pulumi:providers:aws::default_6_10_0::d5cf0383-2cb0-435f-b791-5a48e913f244]
        name      : "bswift.Calling __str__ on an Output[T] is not supported.\n\nTo get the value of an Output[T] as an Output[str] consider:\n1. o.apply(lambda v: f\"prefix{v}suffix\")\n\nSee <https://www.pulumi.com/docs/concepts/inputs-outputs> for more details.\nThis function may throw in a future version of Pulumi."
        records   : [
            [0]: "<http://bswift-load-balancer-lb-4f6f446-1324424032.us-west-2.elb.amazonaws.com|bswift-load-balancer-lb-4f6f446-1324424032.us-west-2.elb.amazonaws.com>"
        ]
        ttl       : 300
        type      : "CNAME"

Yes, that's the expected error

yea that was the error. I thought I was just passing the output around and not changing it. but apparently not

But is domain_name a string in that custom type?

yes

That's your problem.

got it

Actually I meant zone_name. But hopefully you get the gist: don't auto-cast anything to a string: if it starts off as an output, the cast will create one of those Pulumi exception messages as a string, and that'll be the value you're using.

yea, the difficulty is that it's an implicit cast so hard to catch.

I don't know, I've never use Python. Typescript would catch this if you had strongly-typed everything (which I do), but the idiom in Typescript is to not strongly-type unless you need to.. so it wouldn't catch it.

Well thanks again. I will be able to teach my team something from this, as we are still pretty new to Pulumi.