Fastapi/Sanic middleware does not support lack of SqlAlchemy package

[lvgitter]

Package Version

pybrake 1.6.0
Fastapi 0.78.0

Description

On usage with Fastapi, error is raised:

Process SpawnProcess-1:
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/multiprocessing/process.py", line 315, in _bootstrap
    self.run()
  File "/usr/local/lib/python3.8/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.8/site-packages/uvicorn/subprocess.py", line 76, in subprocess_started
    target(sockets=sockets)
  File "/usr/local/lib/python3.8/site-packages/uvicorn/server.py", line 60, in run
    return asyncio.run(self.serve(sockets=sockets))
  File "/usr/local/lib/python3.8/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "uvloop/loop.pyx", line 1501, in uvloop.loop.Loop.run_until_complete
  File "/usr/local/lib/python3.8/site-packages/uvicorn/server.py", line 67, in serve
    config.load()
  File "/usr/local/lib/python3.8/site-packages/uvicorn/config.py", line 458, in load
    self.loaded_app = import_from_string(self.app)
  File "/usr/local/lib/python3.8/site-packages/uvicorn/importer.py", line 21, in import_from_string
    module = importlib.import_module(module_str)
  File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 843, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/application/api/app/./main.py", line 2, in <module>
    from pybrake.middleware.fastapi import init_app
  File "/usr/local/lib/python3.8/site-packages/pybrake/middleware/fastapi.py", line 124, in <module>
    def init_app(app: FastAPI, sqlEngine: future.Engine = None) -> FastAPI:
NameError: name 'future' is not defined

We are not using Sqlalchemy with fastapi, and altough there's an initial check, later line 124 breaks.