I have a resource that has a string value that I want to ret

Question

I have a resource that has a string value that I want to return But I don t know it immediately How can I return it as a promise like output that pulumi recognizes

damp-painting-47843 · Answer

More importantly how do I define it so that before its assigned pulumi recognizes that it has to wait for a value

billowy-army-68599 · Answer

inside an `apply`

damp-painting-47843 · Answer

This is what I have in my resource ```export default class ValidCertificate extends pulumi ComponentResource private certificateArn pulumi Output lt string gt constructor name string args fqdn string zoneId pulumi Input lt string gt opts pulumi ComponentResourceOptions stuff certificateArn = certificate arn other stuff ``` Is that sufficient

damp-painting-47843 · Answer

I have a getter that returns the certificateArn

damp-painting-47843 · Answer

Wouldn t this be undefined until its assigned

billowy-army-68599 · Answer

i m sorry not really following the question sweat smile

damp-painting-47843 · Answer

I have a resource which I m returning an output that I m creating But that output is not immediately known It comes from a promise How do I create my own output this way

billowy-army-68599 · Answer

ah ```pulumi output myValue ```

billowy-army-68599 · Answer

You might have to resolve the promise first of course so you have a string

damp-painting-47843 · Answer

I m confused How does pulumi know that it s going to get an output

damp-painting-47843 · Answer

How does it know that myCertificateResource certificateArn has a value if initially it s undefined and only set in the constructor after the promise has been fulfilled

damp-painting-47843 · Answer

```export default class ValidCertificate extends pulumi ComponentResource private certificateArn pulumi Output lt string gt constructor name string args fqdn string zoneId pulumi Input lt string gt opts pulumi ComponentResourceOptions stuff mypromise then result = gt certificateArn = pulumi output certificateArn other stuff ```

damp-painting-47843 · Answer

Then later ```myValidCertificateResource certificateArn```

damp-painting-47843 · Answer

Should I just make it a regular promise

little-cartoon-10569 · Answer

If the certificate is being created by Pulumi then it s an output already just use it If you re using your own code to create retrieve it then put that code in an async function The value returned from the function is a Promise Pulumi understands Promises look at the definition of `Input lt gt ` and will do the right thing