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Mailu/core/admin/mailu/limiter.py
kaiyou 8e88f1b8c3 Refactor the rate limiting code
Rate limiting was already redesigned to use Python limits. This
introduced some unexpected behavior, including the fact that only
one criteria is supported per limiter. Docs and setup utility are
updated with this in mind.

Also, the code was made more generic, so limiters can be delivered
for something else than authentication. Authentication-specific
code was moved directly to the authentication routine.
2020-02-09 17:38:18 +01:00

34 lines
1.0 KiB
Python

import limits
import limits.storage
import limits.strategies
class LimitWrapper(object):
""" Wraps a limit by providing the storage, item and identifiers
"""
def __init__(self, limiter, limit, *identifiers):
self.limiter = limiter
self.limit = limit
self.base_identifiers = identifiers
def test(self, *args):
return self.limiter.test(self.limit, *(self.base_identifiers + args))
def hit(self, *args):
return self.limiter.hit(self.limit, *(self.base_identifiers + args))
def get_window_stats(self, *args):
return self.limiter.get_window_stats(self.limit, *(self.base_identifiers + args))
class LimitWraperFactory(object):
""" Global limiter, to be used as a factory
"""
def init_app(self, app):
self.storage = limits.storage.storage_from_string(app.config["RATELIMIT_STORAGE_URL"])
self.limiter = limits.strategies.MovingWindowRateLimiter(self.storage)
def get_limiter(self, limit, *args):
return LimitWrapper(self.limiter, limits.parse(limit), *args)