App fails with error "Passing keyword arguments to inject is no longer supported"

[evndean]

I'm getting the following error when trying to run docker-compose up:

Attaching to pythonflaskmicroservice_elasticsearch_1, pythonflaskmicroservice_rabbitmq_1, pythonflaskmicroservice_our-app_1
our-app_1        | Failed to add operation for POST /1.0/room/
our-app_1        | Traceback (most recent call last):
our-app_1        |   File "/code/app.py", line 31, in <module>
our-app_1        |     app.add_api('indexer.yaml', resolver=RestyResolver('api'))
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apps/flask_app.py", line 54, in add_api
our-app_1        |     api = super(FlaskApp, self).add_api(specification, **kwargs)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apps/abstract.py", line 159, in add_api
our-app_1        |     options=api_options.as_dict())
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apis/abstract.py", line 131, in __init__
our-app_1        |     self.add_paths()
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apis/abstract.py", line 252, in add_paths
our-app_1        |     self._handle_add_operation_error(path, method, sys.exc_info())
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apis/abstract.py", line 263, in _handle_add_operation_error
our-app_1        |     six.reraise(*exc_info)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
our-app_1        |     raise value
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apis/abstract.py", line 242, in add_paths
our-app_1        |     self.add_operation(method, path, endpoint, path_parameters)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/apis/abstract.py", line 195, in add_operation
our-app_1        |     pythonic_params=self.pythonic_params)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/operation.py", line 215, in __init__
our-app_1        |     resolution = resolver.resolve(self)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/resolver.py", line 40, in resolve
our-app_1        |     return Resolution(self.resolve_function_from_operation_id(operation_id), operation_id)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/resolver.py", line 62, in resolve_function_from_operation_id
our-app_1        |     return self.function_resolver(operation_id)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/connexion/utils.py", line 34, in get_function_from_name
our-app_1        |     module = importlib.import_module(module_name)
our-app_1        |   File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
our-app_1        |     return _bootstrap._gcd_import(name[level:], package, level)
our-app_1        |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
our-app_1        |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
our-app_1        |   File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
our-app_1        |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
our-app_1        |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
our-app_1        |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
our-app_1        |   File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
our-app_1        |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
our-app_1        |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
our-app_1        |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
our-app_1        |   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
our-app_1        |   File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
our-app_1        |   File "<frozen importlib._bootstrap_external>", line 678, in exec_module
our-app_1        |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
our-app_1        |   File "/code/api/__init__.py", line 1, in <module>
our-app_1        |     from api.room import Room
our-app_1        |   File "/code/api/room.py", line 8, in <module>
our-app_1        |     class Room(object):
our-app_1        |   File "/code/api/room.py", line 9, in Room
our-app_1        |     @inject(indexer=ElasticSearchIndex)
our-app_1        |   File "/usr/local/lib/python3.6/site-packages/injector.py", line 1015, in inject
our-app_1        |     'Passing keyword arguments to inject is no longer supported. '
our-app_1        | AssertionError: Passing keyword arguments to inject is no longer supported. Use inject in combination with parameter annotations to declare dependencies. See documentation for details
pythonflaskmicroservice_our-app_1 exited with code 1

[evndean]

This is an issue with version Injector, which removed support for passing keyword arguments to @Inject in version 0.13.0 (changelog).

Injector seems to be a dependency of Flask-Injector:

Collecting injector>=0.10.0 (from Flask-Injector->-r requirements.txt (line 3))
  Downloading injector-0.13.1-py2.py3-none-any.whl

I've tried specifying different versions of Flask-Injector in requirements.txt, but the most recent version of Injector always gets installed.

[evndean]

I was able to resolve this by specifying injector==0.12.0 in requirements.txt.

Attaching to pythonflaskmicroservice_rabbitmq_1, pythonflaskmicroservice_elasticsearch_1, pythonflaskmicroservice_our-app_1
our-app_1        |  * Running on http://0.0.0.0:9090/ (Press CTRL+C to quit)

However, because of #2, I can't verify that any of the routes work.

$ curl http://localhost:9091
{
  "detail": "The requested URL was not found on the server.  If you entered the URL manually please check your spelling and try again.",
  "status": 404,
  "title": "Not Found",
  "type": "about:blank"
}
$ curl http://localhost:9091/ui
{
  "detail": "The requested URL was not found on the server.  If you entered the URL manually please check your spelling and try again.",
  "status": 404,
  "title": "Not Found",
  "type": "about:blank"
}
$ curl http://localhost:9091/room
{
  "detail": "The requested URL was not found on the server.  If you entered the URL manually please check your spelling and try again.",
  "status": 404,
  "title": "Not Found",
  "type": "about:blank"
}

[ssola]

Sorry for the delay and thanks for the issue, I will fix it right away!

[JonnyDaenen]

PR #4 should fix the inject error