mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-10-01 08:25:44 -04:00
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
import collections
|
|
|
|
|
|
class Ratelimiter(object):
|
|
|
|
def __init__(self):
|
|
self.message_counts = collections.OrderedDict()
|
|
|
|
def prune_message_counts(self, time_now):
|
|
for user_id in self.message_counts.keys():
|
|
message_count, time_start, msg_rate_hz = (
|
|
self.message_counts[user_id]
|
|
)
|
|
time_delta = time_now - time_start
|
|
if message_count - time_delta * msg_rate_hz > 0:
|
|
break
|
|
else:
|
|
del self.message_counts[user_id]
|
|
|
|
def send_message(self, user_id, time_now, msg_rate_hz, burst_count):
|
|
self.prune_message_counts(time_now)
|
|
message_count, time_start, _ignored = self.message_counts.pop(
|
|
user_id, (0., time_now, None),
|
|
)
|
|
time_delta = time_now - time_start
|
|
if message_count - time_delta * msg_rate_hz < 0:
|
|
a
|
|
if message_count - (time_now - time_start) * msg_rate_hz > burst_count:
|
|
allowed = False
|
|
else:
|
|
allowed = True
|
|
message_count += 1
|
|
self.message_counts[user_id] = (
|
|
message_count, time_start, msg_rate_hz
|
|
)
|
|
return allowed
|