51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
import datetime
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class Counter():
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_counters = {}
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def _getCounter(self, counterName):
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if counterName not in Counter._counters:
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Counter._counters[counterName] = {}
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return Counter._counters[counterName]
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def _cleanTicks(self, ticks, refDT):
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for tick in list(ticks):
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if tick and tick < refDT:
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ticks.remove(tick)
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def __init__(self, counter):
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self.counterName = counter
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def augment(self, counterKey, duration = None):
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counter = self._getCounter(self.counterName)
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if counterKey not in counter:
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counter[counterKey] = ([], None) # [countUntil,…], graceTermDate
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(ticks, grace) = counter[counterKey]
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now = datetime.datetime.utcnow()
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self._cleanTicks(ticks, now)
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if grace and grace < now:
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grace = None
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if not grace:
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ticks.append(now + duration if duration else None)
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counter[counterKey] = (ticks, grace)
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return len(ticks)
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def lower(self, counterKey):
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counter = self._getCounter(self.counterName)
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if counterKey not in counter:
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return 0
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(ticks, _void) = counter[counterKey]
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now = datetime.datetime.utcnow()
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self._cleanTicks(ticks, now)
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if len(ticks) > 0:
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ticks.pop()
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return len(ticks)
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def reset(self, counterKey, graceDuration = None):
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counter = self._getCounter(self.counterName)
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if graceDuration:
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now = datetime.datetime.utcnow()
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counter[counterKey] = ([], now + graceDuration)
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elif counterKey in counter:
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del(counter[counterKey])
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