Redis watcher adapter for pycasbin
Project description
pycasbin redis watcher
Casbin role watcher to be used for monitoring updates to casbin policies
Installation
pip install pycasbin-redis-watcher
Basic Usage
Example used along with https://github.com/ScienceLogic/pycasbin/flask-authz
from flask_authz import CasbinEnforcer
from casbin_redis_watcher import RedisWatcher
casbin_enforcer = CasbinEnforcer(app, adapter)
watcher=RedisWatcher(redis_hostname, redis_port)
watcher.set_update_callback(casbin_enforcer.e.load_policy)
casbin_enforcer.set_watcher(watcher)
Using alongside UWSGI
This redis-watcher module starts separate processes which subscribe to a redis channel, and listens for updates to the casbin policy on that channel. When running within WSGI contexts (like uwsgi) you may want to start these processes as a postfork action. As is depicted below:
try:
from uwsgidecorators import postfork
print("Running in uwsgi context")
except ModuleNotFoundError:
print("Not running in uwsgi context")
postfork = None
if postfork:
@postfork
def load_watcher():
global casbin_enforcer
watcher = RedisWatcher(redis_info.hostname, redis_info.port)
watcher.set_update_callback(casbin_enforcer.e.load_policy)
casbin_enforcer.set_watcher(watcher)
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