Man i m starting to lose my mind on this whole Output lt T g

Question

Man i m starting to lose my mind on this whole Output lt T gt stuff smile I m trying to use an Output inside an object that is a parameter to a resource hem chart values to be precise No matter what I do every permutation of apply and interpolate and everything in between it always fails Anyone have a surefire way of converting an Output string to an actual string prior to resource execution

red-match-15116 · Answer

Could you share some code for what you re trying

better-shampoo-48884 · Answer

of course silly of me Here s my latest attempt ```let akv2k8sValues = yaml load fs readFileSync components chart values akv2k8s production yml as any let tlsCrt = tlsCert crt certPem apply tlsCrt = gt let curObj = akv2k8sValues akv2k8sValues env injector certificate = useCertManager false custom enabled true server tls crt tlsCert crt certPem apply x = gt x key toBeFilled ca crt toBeFilled return akv2k8sValues let tlsKey = pulumi all tlsCrt tlsCert key privateKeyPem apply objValue key = gt objValue env injector certificate custom server tls key = key return objValue let finalAkv2k8sValues = pulumi all tlsKey tlsCert caCert certPem apply objValue cert = gt objValue env injector certificate custom ca crt = cert return objValue const SPVakv2k8s = new k8s helm v3 Chart akv2k8s chart akv2k8s version 2 0 10 namespace akv2k8sNamespace metadata name fetchOpts repo helmRepos spv url values finalAkv2k8sValues apply x = gt x provider cluster dependsOn tlsCert crt tlsCert key tlsCert caCert ``` With the following resulting output ```Error invocation of kubernetes helm template returned an error failed to generate YAML for specified Helm chart failed to create chart from template YAML parse error on akv2k8s templates env injector apiservice yaml error converting YAML to JSON yaml line 15 could not find expected ``` Tried with `up f` in the event that `preview` couldn t materialize sufficient output and tried multiple other permutations of apply and interpolate

bored-oyster-3147 · Answer

Your first tlsCert apply is incorrect You are doing an apply again inside the provided delegate when you should be passing tlsCert input from the original delegate

bored-oyster-3147 · Answer

You need to think of the apply functions as a transmutation of the asynchronous value of the output It is like a then function or a continuewith function You are dealing with a type of promise You cannot get the value out of it at compile time but you can transform the eventual output so that when it is asynchronously resolved at runtime your transformation is applied Have you used promises before You know how you can keep calling then on the promise All you re doing there is modifying the TResult component of Promise lt TResult gt It is the same functionality here Only here you never await the promise because Output lt T gt can be cast to Input lt T gt and Input lt T gt is smart enough to recognize that the value is asynchronous and to await it You just need to make sure that the T component is what Input lt T gt expects by the time you pass it But you cannot get T from Output lt T gt without awaiting it

bored-oyster-3147 · Answer

Doing Output lt T gt apply x = gt x is a no op You are telling Output lt T gt that you want it to be Output lt T gt

bored-oyster-3147 · Answer

to be specific this ```let tlsCrt = tlsCert crt certPem apply tlsCrt = gt let curObj = akv2k8sValues akv2k8sValues env injector certificate = useCertManager false custom enabled true server tls crt tlsCert crt certPem apply x = gt x key toBeFilled ca crt toBeFilled return akv2k8sValues ``` should be this ```let tlsCrt = tlsCert crt certPem apply tlsCrt = gt let curObj = akv2k8sValues akv2k8sValues env injector certificate = useCertManager false custom enabled true server tls crt tlsCrt key toBeFilled ca crt toBeFilled return akv2k8sValues ``` and this ```const SPVakv2k8s = new k8s helm v3 Chart akv2k8s chart akv2k8s version 2 0 10 namespace akv2k8sNamespace metadata name fetchOpts repo helmRepos spv url values finalAkv2k8sValues apply x = gt x provider cluster dependsOn tlsCert crt tlsCert key tlsCert caCert ``` is equivalent to this ```const SPVakv2k8s = new k8s helm v3 Chart akv2k8s chart akv2k8s version 2 0 10 namespace akv2k8sNamespace metadata name fetchOpts repo helmRepos spv url values finalAkv2k8sValues provider cluster dependsOn tlsCert crt tlsCert key tlsCert caCert ```

bored-oyster-3147 · Answer

Also I believe this `dependsOn tlsCert crt tlsCert key tlsCert caCert ` may be completely redundant You are already providing inputs to the helm chart that are built from outputs that came from `tlsCert` so pulumi is smart enough to recognize that the helm chart depends on `tlsCert` by inference

bored-oyster-3147 · Answer

can you link the reference for `tlsCert` I can t figure out what type it is so I can t find it but I suspect your code to build `finalAkv2k8sValues` could be much simpler

red-match-15116 · Answer

Following on from everything < bored oyster 3147> mentioned I think you could rewrite your code as ```let akv2k8sValues = yaml load fs readFileSync components chart values akv2k8s production yml as any const finalAkv2k8sValues = pulumi all akv2k8sValues tlsCert crt certPem tlSCert key privateKeyPem tlsCert caCert certPem apply akv2k8sValues crtCertPem privateKeyPem caCertCertPem = gt const k8sValues = akv2k8sValues Copy to a new object to avoid mutating akv2k8sValues k8sValues env injector certificate = useCertManager false custom enabled true server tls crt crtCertPem key privateKeyPem ca crt caCertCertPem return k8sValues const SPVakv2k8s = new k8s helm v3 Chart akv2k8s chart akv2k8s version 2 0 10 namespace akv2k8sNamespace metadata name fetchOpts repo helmRepos spv url values finalAkv2k8sValues provider cluster ```

red-match-15116 · Answer

Or possibly even ```let akv2k8sValues = yaml load fs readFileSync components chart values akv2k8s production yml as any const finalAkv2k8sValues = pulumi all akv2k8sValues tlsCert apply akv2k8sValues tlsCert = gt const k8sValues = akv2k8sValues Copy to a new object to avoid mutating akv2k8sValues k8sValues env injector certificate = useCertManager false custom enabled true server tls crt tlsCert crt CertPem key tlsCert key privateKeyPem ca crt tlsCert caCert CertPem return k8sValues const SPVakv2k8s = new k8s helm v3 Chart akv2k8s chart akv2k8s version 2 0 10 namespace akv2k8sNamespace metadata name fetchOpts repo helmRepos spv url values finalAkv2k8sValues provider cluster ```

better-shampoo-48884 · Answer

Thanks all and yes I added several layers of absurd redundancy in my attempts to get this to work And thanks for noticing my blunder in the first double apply of course I should have been using the already applied value Regardless the approach does not work my guess it s due to how the helm resource functions and how preview functions though that means it should work when I do `up f` but I get the same error there

bored-oyster-3147 · Answer

I d wager there is still an output usage issue in there somewhere if you want to share the full sample

red-match-15116 · Answer

Agreed there should be no difference in preview vs up with regards to output functionality

red-match-15116 · Answer

It looks like your error is unrelated to the code however it seems to be pointing to your yaml template and an inability to parse it

better-shampoo-48884 · Answer

I thought it might fail on preview due to this ```During some program executions apply doesn t run For example it won t run during a preview when resource output values may be unknown Therefore you should avoid side effects within the callbacks For this reason you should not allocate new resources inside of your callbacks either as it could lead to pulumi preview being wrong ``` from <https www pulumi com docs intro concepts inputs outputs >

better-shampoo-48884 · Answer

because for helm to preview it needs to run and generate yaml and that requires my apply d config slightly smiling face

bored-oyster-3147 · Answer

Your use case doesn t really fall under side effects The preview knows that it accepts an Input lt string gt and it knows that you are providing an Input lt string gt and that s it That blurb that mentions side effects is mostly talking about external stateful actions Like you wouldn t want your apply delegate to be reaching out to an external API and making changes And you don t want to declare pulumi resources in it because it isn t resolved during preview Like I said I m betting there is another bug in your code that we haven t caught yet