here can someone help answer s questio

Question

here can someone help answer < jolly camera 35709> s question I have the same issue I cannot seem to get the actual string value from a StackReference output

brave-planet-10645 · Answer

That s because it s not a true string it s an Output <https www pulumi com docs intro concepts programming model outputs|https www pulumi com docs intro concepts programming model outputs>

witty-candle-66007 · Answer

To add to this basically you need to use a pulumi mechanism to print out the value For example this code works ```import pulumi from pulumi import StackReference other = StackReference f goo foo dev other output = other get output bucket name Export the name of the bucket pulumi export other bucket name other output``` in that it outputs the output from stack `goo foo dev` to the terminal

witty-candle-66007 · Answer

And here s a hacky hacky version that also does a print of the value I can t just do `print other output ` because it s not a string out there in the main body of the code But in the apply block it is a string and so I can treat it as such ```import pulumi from pulumi import StackReference other = StackReference f goo foo dev other output = other get output bucket name Export the name of the bucket pulumi export other bucket name other output def printval arg print printing output print arg other output apply lambda other output printval other output ```

agreeable-notebook-88887 · Answer

Thanks for the help How would you persist that str value so that you can do some logic based on it

agreeable-notebook-88887 · Answer

Outside of passing this into another pulumi resource is it just impossible to perform logic on a stackreference output within your main py

witty-candle-66007 · Answer

Yes but what s the use case exactly If you are looking to make decisions about stacks based on outputs from other stacks then the automation api may be the better answer It would allow you to orchestrate actions across multiple stacks

agreeable-notebook-88887 · Answer

Admittedly I may have a contrived use case as I m simply exploring pulumi to get a feel for it But in my little demo I wanted to throw a simple hello world webserver that displayed the dns for a different pulumi stack webserver I am generating the user data for the ec2 instance and passing that to the pulumi ec2 resource

agreeable-notebook-88887 · Answer

The other stack dns is just empty bc I get None when I use interpolation on the user data string with the output

agreeable-notebook-88887 · Answer

Given that this is a stack reference it seems counterintuitive that pulumi doesn t know the value until main exits and kicks to pulumi

witty-candle-66007 · Answer

I think you would be able to use interpolation to create the user data containing the dns name and set the user data for the vm with that concatenated value See `Output concat ` example here <https www pulumi com docs intro concepts programming model outputs and strings>