'CustomKeyCheck' object has no attribute 'arg_count'

Support
1

Hi all!
I’m trying to write a python plugin that replaces the key verification done by Tyk with a custom one (essentially pass the token below the chain if there is one).

Following this example, I wrote it, but I always get

“Hook ‘MyAuthMiddleware’ returned an error: ‘CustomKeyCheck’ object has no attribute ‘arg_count’”

when an API is called.
The manifest.json is simply:

{
  "file_list": [
"middleware.py"
  ],
  "custom_middleware": {
"auth_check": {
  "name": "MyAuthMiddleware"
},
"driver": "python"
  }
}

If, instead, I use the @Hook decorator then I don’t have this issue, but the key verification fails.
Finally, I’ve this issue also with the @Pre decorator.

2

Hi, this is an old sample. It should follow this convention.

Could you share your middleware code to see why the verification fails?

3

Hi,
in the end seemed like the metadata['token'] was mandatory: ‘CustomKeyCheck’ object has no attribute ‘arg_count’ · Issue #2416 · TykTechnologies/tyk · GitHub
What is ugly is that a new API key is generated from such token passed in the metadata, so if I use as token something like “some-random-string” (just to make the validation pass), then I can actually use “some-random-string” as API key.

Is it like that by design? To me, this seems more a bug…