OpenAPITools / OpenAPITools/openapi-generator

[REQ] Java client - Extra http parameters

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#3,904 2 comments 0 reactions 0 assignees View on GitHub

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Enhancement: Feature
Dominant language
Java
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Description

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

Some "swagger.json" of external api are incomplete (missing query parameter documentation for instance or http headers...).
The generated rest client has no extension point (to pass extra parameters).

Describe the solution you'd like

Ability to pass a lamba function to interract with localVarQueryParams, localVarHeaderParams... before they are used

Describe alternatives you've considered

Extend the the Api or write my own one.

Additional context

This is for the java client generator

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in the Java client generator and trace how localVarQueryParams and localVarHeaderParams are assembled and consumed in generated REST clients. Define an extension point for passing a lambda before those parameters are used, then verify that generated clients can add undocumented query parameters or headers without modifying the generated API manually.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, openapi
Domain
api, tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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