OpenAPITools / OpenAPITools/openapi-generator

[BUG] OpenAPI code generator does not add the generated code comment for c# generated code

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Issue: Bug
Dominant language
Java
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Description

Description

It is convention that generated code, that will be regenerated and is discurraged to be edited manually have following comment at its start of file:

// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:2.0.50727.3053
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>

This allows 3rd party tools to disable refactoring and linting

openapi-generator version

OpenAPI Generator v5.0.1

Generation Details

Running with https://github.com/christianhelle/apiclientcodegen

Suggest a fix

Add the header whenever a file is generated

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 by reproducing the issue with OpenAPI Generator v5.0.1 and the linked apiclientcodegen setup, then inspect the C# generation path and its generated files. Done means every generated C# file begins with the requested auto-generated header, with behavior verified against the generator output.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, openapi
Domain
api, tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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