Configuring restricted APP_NAME pattern leads to 500 during runtime.

I configured a restricted pattern for the APP_NAME containing an * leading to a Server Error with following exception. This prevents a Django app from working properly when the APP_NAME is misconfigured.

Unable to process log entry: 'DjangoClient' object has no attribute 'filter_exception_types_dict'
Traceback (most recent call last):
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/django/utils/deprecation.py", line 138, in __call__
    response = self.process_request(request)
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/contrib/django/middleware/__init__.py", line 157, in process_request
    self.client.begin_transaction("request")
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/base.py", line 442, in begin_transaction
    self.instrumentation_store.begin_transaction(transaction_type)
AttributeError: 'DjangoClient' object has no attribute 'instrumentation_store'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/contrib/django/handlers.py", line 59, in actually_do_stuff
    client.capture('Exception', exc_info=exc_info, request=request)
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/contrib/django/client.py", line 200, in capture
    result = super(DjangoClient, self).capture(event_type, **kwargs)
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/base.py", line 279, in capture
    data = self.build_msg_for_logging(event_type, data, date, extra, stack, **kwargs)
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/base.py", line 178, in build_msg_for_logging
    if self._filter_exception_type(result):
  File "/Users/simitt/.pyenv/versions/django-test-3.6.2/lib/python3.6/site-packages/elasticapm/base.py", line 332, in _filter_exception_type
    if exc_type in self.filter_exception_types_dict:
AttributeError: 'DjangoClient' object has no attribute 'filter_exception_types_dict'

I am testing with Django-1.11.5 and python 3.6.2.

[beniwohli]

Sorry for the long wait on this @simitt!

[beniwohli]

The problem is, we’re a library, not an app. I really want to avoid taking down a user’s website because they forgot to set the ELASTIC_APM_APP_NAME environment variable in production.