How to make tokenUrl configurable - openapi

Question

Is there anyway to make the token url in OpenAPI spec configurable.
For instance the I want to make the realm {{REALM_NAME_HERE}} below configurable from swagger UI.
securitySchemes:
oauth:
type: oauth2
description: This API uses OAuth 2
flows:
clientCredentials:
tokenUrl: http://localhost:32777/auth/realms/{{REALM_NAME}}/protocol/openid-connect/token
scopes: {}

Answer 1

tokenUrl does not support variables. There's a corresponding feature request in the OpenAPI Specification repository:
https://github.com/OAI/OpenAPI-Specification/issues/551
However, if the parameterized part of the tokenUrl (in your example - http://localhost:32777/auth/realms/{{REALM_NAME}}) also happens to be the API server URL, you can define tokenUrl relative to the server URL:
openapi: 3.0.0
servers:
- url: 'http://localhost:32777/auth/realms/{REALM_NAME}'
variables:
REALM_NAME:
default: some_default_realm # default value is required
paths:
...
components:
securitySchemes:
oauth:
type: oauth2
description: This API uses OAuth 2
flows:
clientCredentials:
tokenUrl: './protocol/openid-connect/token'
scopes: {}