URL data source settings screen crashes the front-end

Issue Summary

The URL data source is deprecated but many of them still exist in the wild. If you visit settings for the data source, the front-end crashes.

Steps to Reproduce

1. Create a new type: url data source via the API:

curl --request POST \
  --url https://app.redash.io/default/api/data_sources \
  --header 'authorization: Key <your api key>' \
  --header 'content-type: application/json' \
  --data '{
  "name": "Bug Proof",
  "type": "url",
  "syntax": "sql",
  "paused": 0,
  "pause_reason": null,
  "options": {
    "password": "pass",
    "url": "example.com",
    "username": "user"
  },
  "queue_name": "queries",
  "scheduled_queue_name": "scheduled_queries"
}'

1. Try to view the data source in settings. The front-end crashes and the console fills with dynamicForm errors

Technical details:

• Redash Version: v9 alpha
• Browser/OS: FF & Chrome
• How did you install Redash: SaaS

[gabrieldutra]

Does the URL data source have a configuration schema? I don’t see one in url.py.

Yes, it’s totally based on BaseHTTPQueryRunner

[gabrieldutra]

One option is to have the API return the configuration schemas for all data source types, but mark the deprecated ones so they are excluded from the create UI.

Oh, I see, I thought the deprecated ones had their code deleted 😅. That’s feasible, basically move the filtering logic from #3972 to the frontend, I’ll push a PR with that 👍.