castle-python - AttributeError: 'NoneType' object has no attribute 'get' on client.filter

[aleksf]

I got a test Flask app and I am trying to follow https://docs.castle.io/v1/getting-started/prevent-fake-accounts/

Token and context are populated at the backend:

Context:

{'client_id': '', 'active': True, 'headers': {'Remote-Addr': 'xxx.xxx.xxx.xxx', 'Host': 'xxx.xxx.xxx.xxx:5000', 'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:88.0) Gecko/20100101 Firefox/88.0', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Content-Length': '442', 'Origin': 'http://xxx.xxx.xxx.xxx:5000', 'Connection': 'keep-alive', 'Referer': 'http://xxx.xxx.xxx.xxx:5000/signup', 'Cookie': True, 'Upgrade-Insecure-Requests': '1', 'Pragma': 'no-cache', 'Cache-Control': 'no-cache'}, 'ip': 'xxx.xxx.xxx.xxx', 'library': {'name': 'castle-python', 'version': '6.0.0'}, 'locale': 'en-US,en;q=0.5', 'user_agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:88.0) Gecko/20100101 Firefox/88.0'}

The code is a copy:

    res = client.filter({
        'event': '$registration',
        'user': {
            "email": email,
        },
        'request_token': token,
        'context': {
            'ip': context['ip'],
            'headers': context['headers']
        }
    })

Exception is caused by client.filter and I got no idea where to dig:

Traceback (most recent call last):
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 2088, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 2073, in wsgi_app
    response = self.handle_exception(e)
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 2070, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 1515, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 1513, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/flask/app.py", line 1499, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "/home/sysadmin/git-repos/flask_auth_scotch/project/auth.py", line 57, in signup_post
    res = client.filter({
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/castle/client.py", line 66, in filter
    command = CommandsFilter(self.context).call(options)
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/castle/commands/filter.py", line 14, in call
    context = ContextMerge.call(self.context, options.get('context'))
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/castle/context/merge.py", line 10, in call
    UtilsMerge.call(source_copy, request_context)
  File "/home/sysadmin/.local/share/virtualenvs/flask_auth_scotch-Fonrmw-6/lib/python3.8/site-packages/castle/utils/merge.py", line 20, in call
    elif isinstance(base.get(key), dict) and isinstance(value, dict):
AttributeError: 'NoneType' object has no attribute 'get'

Please assist.

[bartes]

thanks for reporting the issue. It has been resolved in version 6.1