should_retry_stop does not play nice with tenacity

[tommyjcarpenter]

we hit this stacktrace today:

  File "/home/ubuntu/dev/python/merq/util/opsgenie.py", line 37, in create_alert
    create_response = get_alert_api().create_alert(create_alert_payload=body)
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/opsgenie_sdk/api/alert/__init__.py", line 1136, in create_alert
    (data) = self.create_alert_with_http_info(create_alert_payload, **kwargs)  # noqa: E501
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/opsgenie_sdk/api/alert/__init__.py", line 1211, in create_alert_with_http_info
    collection_formats=collection_formats)
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/opsgenie_sdk/api_client.py", line 429, in call_api
    _preload_content, _request_timeout, _host)
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/opsgenie_sdk/api_client.py", line 219, in __call_api
    raise exception
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/opsgenie_sdk/api_client.py", line 203, in __call_api
    _request_timeout=_request_timeout)
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/tenacity/__init__.py", line 330, in call
    start_time=start_time)
  File "/home/ubuntu/dev/python/venv_3.7/lib/python3.7/site-packages/tenacity/__init__.py", line 292, in iter
    delay_since_first_attempt):
TypeError: should_retry_stop() takes 2 positional arguments but 3 were given
Command exited with non-zero status 1
1.62user 0.51system 5:52.42elapsed 0%CPU (0avgtext+0avgdata 106140maxresident)k
0inputs+8424outputs (0major+29116minor)pagefaults 0swaps

I tried to dig into the code the best I can. I traced it to probably: https://github.com/opsgenie/opsgenie-python-sdk/pull/29/files

The old function there was

 self.retrying = tenacity.Retrying(stop=tenacity.stop_after_attempt(configuration.retry_count),

This stop function is provided by tenacity and is an instance of their abstract base class: https://github.com/jd/tenacity/blob/master/tenacity/stop.py#L24

This Opsgenie PR above replaces it with

def should_retry_stop(self, retry_state):
        if self.configuration.retry_enabled and retry_state.attempt_number <= self.configuration.retry_count and retry_state.seconds_since_start <= self.configuration.retry_max_delay:
            return False

        return True

however self here refers to the OpsGenie API object; it is probably not an instance of the tenacity base class: https://github.com/jd/tenacity/blob/master/tenacity/stop.py#L78

it seems like their base class requires __call__ and thats it?

I tried digging into what parameters are exactly passed to the stop function; I think its around here: https://github.com/jd/tenacity/blob/master/tenacity/init.py#L373

however I got lost in the rabbithole

my only guess is if self_retry_stop was not a class method but just a method, it might work?