How can I use the ouput of a custom resource as a string in

Question

How can I use the ouput of a custom resource as a string in a policy CustomResource outputs endpoint Need to use that output as such `url= $ customResource endpoint `

white-balloon-205 · Answer

In general the answer is use `apply` For example ``` policy cutomResource endpoint apply endpoint = gt JSON stringify endpoint ``` Depending on exactly what you are doing there may be easier options

salmon-beard-79336 · Answer

I just want the output which is a url so I can pass it on to another policy

salmon-beard-79336 · Answer

Context ``` const exampleApiOperationPolicy = new azure apimanagement ApiOperationPolicy test policy apiManagementName homePageOperation apiManagementName apiName homePageOperation apiName operationId homePageOperation operationId resourceGroupName homePageOperation resourceGroupName xmlContent ` lt policies gt lt inbound gt lt set backend service base url= $ staticWebsiteUrl gt lt inbound gt lt backend gt lt forward request timeout= 30 follow redirects= true gt lt backend gt lt policies gt ` ```

high-translator-22614 · Answer

there s also `pulumi interpolate`

high-translator-22614 · Answer

but yeah in general you should assume that resource properties are asyncronous `Output`s and not actual values

salmon-beard-79336 · Answer

got a link or some demo on how to use that neat `interpolate` function

white-balloon-205 · Answer

Yes in the case above `pulumi interpolate` should do what you want <https www pulumi com docs reference programming model outputs and strings>

salmon-beard-79336 · Answer

Same error ``` const staticWebsiteUrl = pulumi interpolate `$ staticWebsite endpoint ` xmlContent ` lt policies gt lt inbound gt lt set backend service base url= $ staticWebsiteUrl gt ```

salmon-beard-79336 · Answer

``` Calling toString on an Output lt T gt is not supported n nTo get the value of an Output lt T gt as an Output lt string gt consider either n1 o apply v = gt `pref ```

salmon-beard-79336 · Answer

have tried apply too

white-balloon-205 · Answer

The interpolate should go on ``` xmlContent pulumi interpolate` ` ```

salmon-beard-79336 · Answer

aaahhh

salmon-beard-79336 · Answer

wow much neat many thanks

white-balloon-205 · Answer

Definitely encourage reading the rest of <https www pulumi com docs reference programming model outputs> for details on `Output` more generally

salmon-beard-79336 · Answer

thank you will go through it