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Worker threads WSGI Middleware Configurable #2052

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a29b0c8
Worker threads WSGI Middleware Configurable
EyalMK May 7, 2025
3936f16
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] May 7, 2025
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11 changes: 8 additions & 3 deletions connexion/apps/flask.py
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Original file line number Diff line number Diff line change
Expand Up @@ -127,7 +127,7 @@ def add_url_rule(


class FlaskASGIApp(SpecMiddleware):
def __init__(self, import_name, server_args: dict, **kwargs):
def __init__(self, import_name, server_args: dict, worker_threads, **kwargs):
self.app = flask.Flask(import_name, **server_args)
self.app.json = flask_utils.FlaskJSONProvider(self.app)
self.app.url_map.converters["float"] = flask_utils.NumberConverter
Expand All @@ -138,7 +138,7 @@ def __init__(self, import_name, server_args: dict, **kwargs):
self.app.config["TRAP_BAD_REQUEST_ERRORS"] = True
self.app.config["TRAP_HTTP_EXCEPTIONS"] = True

self.asgi_app = WSGIMiddleware(self.app.wsgi_app)
self.asgi_app = WSGIMiddleware(self.app.wsgi_app, workers=worker_threads)

def add_api(self, specification, *, name: t.Optional[str] = None, **kwargs):
api = FlaskApi(specification, **kwargs)
Expand Down Expand Up @@ -175,6 +175,7 @@ def __init__(
lifespan: t.Optional[Lifespan] = None,
middlewares: t.Optional[list] = None,
server_args: t.Optional[dict] = None,
worker_threads: t.Optional[int] = 10,
specification_dir: t.Union[pathlib.Path, str] = "",
arguments: t.Optional[dict] = None,
auth_all_paths: t.Optional[bool] = None,
Expand Down Expand Up @@ -223,8 +224,12 @@ def __init__(
:obj:`validators.VALIDATOR_MAP`.
:param security_map: A dictionary of security handlers to use. Defaults to
:obj:`security.SECURITY_HANDLERS`
:param worker_threads: Number of worker threads for WSGI middleware wrapping FlaskApp; for handling FlaskApp requests.
Defaults to 10.
"""
self._middleware_app = FlaskASGIApp(import_name, server_args or {})
self._middleware_app = FlaskASGIApp(
import_name, server_args or {}, worker_threads=worker_threads
)

super().__init__(
import_name,
Expand Down