spiff-arena/spiffworkflow-backend/wsgi.py

import os

from spiffworkflow_backend import create_app
from spiffworkflow_backend.services.acceptance_test_fixtures import load_acceptance_test_fixtures

app = create_app()

num_proxies = 0

# this is the first configuration spiffworkflow-backend supported.
# you should use SPIFFWORKFLOW_BACKEND_PROXY_COUNT_FOR_PROXY_FIX instead, since it is more precise.
if app.config["SPIFFWORKFLOW_BACKEND_USE_WERKZEUG_MIDDLEWARE_PROXY_FIX"]:
    num_proxies = 1

if app.config["SPIFFWORKFLOW_BACKEND_PROXY_COUNT_FOR_PROXY_FIX"]:
    num_proxies = int(app.config["SPIFFWORKFLOW_BACKEND_PROXY_COUNT_FOR_PROXY_FIX"])

if num_proxies > 0:
    from werkzeug.middleware.proxy_fix import ProxyFix

    # https://flask.palletsprojects.com/en/2.2.x/deploying/proxy_fix/
    app.wsgi_app = ProxyFix(app.wsgi_app, x_for=num_proxies, x_proto=num_proxies, x_host=num_proxies, x_prefix=num_proxies)

# this is in here because when we put it in the create_app function,
# it also loaded when we were running migrations, which resulted in a chicken/egg thing.
if os.environ.get("SPIFFWORKFLOW_BACKEND_LOAD_FIXTURE_DATA") == "true":
    with app.app_context():
        load_acceptance_test_fixtures()