https://pulumi.com
Join Slack
This message was deleted.
# typescript
s
This message was deleted.
m
I think that I can answer this, though the answer for the 
endpoint
bit isn’t particularly satisfying.
The constructor for the 
pulumi.Resource
superclass needs to see all potential properties in the 
props
bag, not just input properties. If the names of the output properties are not present in that bag, the 
Resource
machinery can’t determine which output properties to expect.
So I think that if you change your code to this, things should work as you expect:
Copy code
class Cluster extends pulumi.dynamic.Resource {
    public readonly endpoint!: pulumi.Output<string>;

    constructor(
        name: string,
        props: IClusterInputs,
        opts?: pulumi.CustomResourceOptions,
    ) {
        super(new ClusterProvider(), name, { endpoint: undefined, ...props }, opts);
    }
}
The reason 
pulumi.output(cluster.endpoint)
changed things is that it turned an 
undefined
value into a resolved (but defined!) 
pulumi.Output
value whose inner value is 
undefined
.
w.r.t. `id`: you didn’t have to do anything special there because 
id
is always defined by the SDK.
r
Oh, yeah I think you're right. Why do we have to "initialize" 
endpoint
like that in the dynamic resource constructor?
m
I think that it’s because without that initialization, it’s not possible for the constructor to know what the set of output properties is for the resource. IIRC there are problems with attempting to iterate over the properties defined on 
this
(e.g. properties that are present on every object shouldn’t be considered output properties), but my JS/TS expertise may be failing me here (cc @microscopic-pilot-97530).
r
Got it, that makes sense. Thanks.
5 Views
Open in Slack
PreviousNext
Powered by

Pulumi Community

No matter how you like to participate in developer communities, Pulumi wants to meet you there. If you want to meet other Pulumi users to share use-cases and best practices, contribute code or documentation, see us at an event, or just tell a story about something cool you did with Pulumi, you are part of our community.

Powered by