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37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
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import collections
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class Ratelimiter(object):
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def __init__(self):
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self.message_counts = collections.OrderedDict()
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def prune_message_counts(self, time_now):
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for user_id in self.message_counts.keys():
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message_count, time_start, msg_rate_hz = (
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self.message_counts[user_id]
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)
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time_delta = time_now - time_start
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if message_count - time_delta * msg_rate_hz > 0:
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break
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else:
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del self.message_counts[user_id]
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def send_message(self, user_id, time_now, msg_rate_hz, burst_count):
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self.prune_message_counts(time_now)
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message_count, time_start, _ignored = self.message_counts.pop(
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user_id, (0., time_now, None),
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)
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time_delta = time_now - time_start
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if message_count - time_delta * msg_rate_hz < 0:
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a
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if message_count - (time_now - time_start) * msg_rate_hz > burst_count:
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allowed = False
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else:
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allowed = True
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message_count += 1
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self.message_counts[user_id] = (
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message_count, time_start, msg_rate_hz
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)
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return allowed
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