Feature request: Allow non-JSON schemas in Feature flags

[whardier]

Is your feature request related to a problem? Please describe.

Allow for callable transforms to be used (as well as the str "shortcuts").

Describe the solution you'd like

Pass something like yaml.loads or load_my_really_cool_serialized_data callable as transform argument toward parameter store fetches.

Describe alternatives you've considered

Due to how feature flags works.. we are unable to use yaml or any other loader before processing happens and this needs patched. Other approaches for parameters is to not pass a transform and then transform after the fact.

Additional context

PR already written up.

[michaelbrewer]

@whardier - shouldn't this about be resolved for feature flags?

[whardier]

Referring to #804?

No this issue relates to the payload coming from appconfig rather than subobjects.

[heitorlessa]

Update: Now that feature flags is stable (one incoming change for Time-based feature), I'd love to see a RFC on this for a Loader interface so to allow any input (YAML, TOML, canonical, etc.).

[leandrodamascena]

Hi @whardier! Hope things are going well over there.

It's been a long time since we've had updates on this issue, and we'd like to know if you can work on an RFC to implement this in Powertools. As @heitorlessa mentioned, the Feature Flags is stable and we have support to TimeBased - #1554 and Module Range - #2003, it can be awesome to add support for input other than JSON only.

Thank you.

[heitorlessa]

We're closing feature requests older than a year that haven't received enough customers +1 or that we were unable to prioritize. For newer customers interested in, please feel free to comment and we can reopen it.

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