Hi I d like to hand off the string value of a `StringOutput`

Question

Hi I d like to hand off the string value of a `StringOutput` as a `string` how can I do this conversion I don t see any straightforward method

broad-dog-22463 · Answer

< lemon agent 27707>

green-morning-1318 · Answer

Pasting an answer from Evan I got for roughly the same question wink these values are essentially futures promises you need to use `pulumi Apply` to execute a callback on the raw values Some docs on this here A common pattern we use if unit testing functionality is to pass the raw values back into channels There s an example of that here

kind-minister-39119 · Answer

ohhhhhh

kind-minister-39119 · Answer

thank you

green-morning-1318 · Answer

no problem slightly smiling face we re all here to help each other

lemon-agent-27707 · Answer

< kind minister 39119> happy to take a look at the code you re working on The general rule of thumb is that any manipulation of output types transforming string formatting etc needs to happen inside of an apply You can call apply on a string output and then pass the new output that is returned on to another resource

kind-minister-39119 · Answer

I m not trying to pass it along to any other Pulumi code I m writing a layer of abstraction over pulumi to allow our developers to use it without having to think about pulumi s idiosyncratic types I have a `EC2Instance` struct which contains an `ec2 Instance` from Pulumi I want to be able to populate the `EC2Instance` with data from the underlying pulumi resource

kind-minister-39119 · Answer

Does this `Apply` mechanism allow me to funnel these values out of Pulumi because right now it seems like there s an attempt to jail the data

kind-minister-39119 · Answer

In the example you give it seems like I would still end up with a `StringOutput` what I want is a `string`

lemon-agent-27707 · Answer

I think what you want here are stack outputs <https www pulumi com docs intro concepts programming model stack outputs>

lemon-agent-27707 · Answer

```ctx Export key outputValue ```

lemon-agent-27707 · Answer

Then via the CLI you can do ```$pulumi stack output key plain string value returned ```

kind-minister-39119 · Answer

But I m not allowed to take that data and just use it however I want The only thing I can do with it is show it to the user

lemon-agent-27707 · Answer

You can shell out to call that CLI command and get the value

kind-minister-39119 · Answer

oh boy

kind-minister-39119 · Answer

okay

lemon-agent-27707 · Answer

It sounds like what you want is a runtime API <https github com pulumi pulumi issues 3901>

lemon-agent-27707 · Answer

Feel free to put some thoughts on that issue definitely something we d like to look into

kind-minister-39119 · Answer

A runtime API would be great But at a minimum what would let me do what I want to do is a way to get the value of an output in code

kind-minister-39119 · Answer

I guess that s what you re referring to

kind-minister-39119 · Answer

nvm

lemon-agent-27707 · Answer

You can use the pulumi integration testing framework written in go <https www pulumi com docs guides testing integration pulumi s integration test framework>

lemon-agent-27707 · Answer

kind-minister-39119 · Answer

Okay This gives me the information I need Thank you slightly smiling face

lemon-agent-27707 · Answer

It gives you a programmatic way to create a stack and run some code that has access to the stack outputs at the end Perhaps not exactly what you re looking for but might be helpful in the meantime until a runtime API is available

kind-minister-39119 · Answer

Thanks Do any of the other languages have runtime API support

lemon-agent-27707 · Answer

Not today

kind-minister-39119 · Answer

thanks