Possible alternative to configQueryExtraUnreserved option? about haskell

[jonschoning]

Before addressing the proposed solution, I just want to be clear about how the code generator works.

---

From the point of view of the generator api, technically -&- applies an "optional param" which is up to the operation to decide how that optional param is encoded. it could be a query param, but also be header or multiform data, etc.

The operation function only demands the required parameters as part of the function arguments (Name name) (Namespace namespace) and gives you the ability to supply optional parameters, hiding from you how they are included in the actual request.

Required parameters could also end up as query parameters for example

loginUser
  :: Accept accept -- ^ request accept ('MimeType')
  -> Username -- ^ "username" -  The user name for login
  -> Password -- ^ "password" -  The password for login in clear text
  -> OpenAPIPetstoreRequest LoginUser MimeNoContent Text accept
loginUser  _ (Username username) (Password password) =
  _mkRequest "GET" ["/user/login"]
    `addQuery` toQuery ("username", Just username)
    `addQuery` toQuery ("password", Just password)

---

So, we could introduce a change like you propose only for HasOptionalParam , (that is mostly what kubernetes uses), but that leaves any required query params unaddressed.

Alternatively we could come up with a method that works for required params too, however the required parameters are harder to change since they're tied to concrete types in the generated code.

Another option which would be to let the user modify the request object instead of the operation arguments, to tell it how those query params get plus+encoded, this would be a less-typed solution but more general.

A lot of this depends on how typed the fix needs to be. even for your example UnescapePlusSigns needs to have the appropriate instances to typecheck with the HasOptionalParam class.

I'll think about it and play around with some code to see the best way to provide a solution to this.

The only place i know of where plus-encoding is not allowed is in labels and selectors currently, but that seems like an important piece, so i'm not sure if its a better default to not plus-encode or default to plus-encode.

(if you're really stuck, you can always have more than one config object KubernetesClientConfig and use different configs or create a temporary modified config, depending on the request, but i realize that's not ideal.)

[thomasjm]

Thanks for the quick response!

FWIW, I have read that while there isn't good universal agreement about how plus signs in URLs should be treated, the W3C URI spec says the following:

Within the query string, the plus sign is reserved as shorthand notation for a space. Therefore, real plus signs must be encoded.

Other guidance I've seen for API designers is in line with this as well. Therefore, I'd suggest defaulting to plus-encode and treating the places where Kubernetes APIs violate this rule as the exceptional cases. Hopefully such cases are rare and limited to things like labels and selectors (I'm not aware of any others either).

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[jonschoning]

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[hughjfchen]

Is this related to #67 , which has been fixed by PR #92 ?

[thomasjm]

Yes @hughjfchen, I referenced the relevant commit (541fb76) in the initial post. I'd say "fixed" is a strong word :P

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[jonschoning]

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[thomasjm]

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