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support proxy count for proxy fix (#2106)

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Co-authored-by: burnettk <burnettk@users.noreply.github.com>
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Kevin Burnett 2024-10-10 14:51:22 +00:00 committed by GitHub
parent 3d35ba7ee9
commit 336c42b689
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2 changed files with 15 additions and 1 deletions
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3
spiffworkflow-backend/src/spiffworkflow_backend/config/default.py
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@ -249,6 +249,9 @@ config_from_env("SPIFFWORKFLOW_BACKEND_DEBUG_TASK_CONSISTENCY", default=False)
# to make SpiffWorkflow aware that it should return https for the server urls etc rather than http.
config_from_env("SPIFFWORKFLOW_BACKEND_USE_WERKZEUG_MIDDLEWARE_PROXY_FIX", default=False)
# how many proxies are in front of this flask server (for use with ProxyFix)
config_from_env("SPIFFWORKFLOW_BACKEND_PROXY_COUNT_FOR_PROXY_FIX", default=0)
# only for DEBUGGING - turn off threaded task execution.
config_from_env("SPIFFWORKFLOW_BACKEND_USE_THREADS_FOR_TASK_EXECUTION", default=True)

13
spiffworkflow-backend/wsgi.py
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@ -5,10 +5,21 @@ from spiffworkflow_backend.services.acceptance_test_fixtures import load_accepta
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
app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1)
# 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.