| from __future__ import absolute_import | |
| class Quota(object): | |
| """An upper or lower bound for metrics""" | |
| def __init__(self, bound, is_upper): | |
| self._bound = bound | |
| self._upper = is_upper | |
| def upper_bound(upper_bound): | |
| return Quota(upper_bound, True) | |
| def lower_bound(lower_bound): | |
| return Quota(lower_bound, False) | |
| def is_upper_bound(self): | |
| return self._upper | |
| def bound(self): | |
| return self._bound | |
| def is_acceptable(self, value): | |
| return ((self.is_upper_bound() and value <= self.bound) or | |
| (not self.is_upper_bound() and value >= self.bound)) | |
| def __hash__(self): | |
| prime = 31 | |
| result = prime + self.bound | |
| return prime * result + self.is_upper_bound() | |
| def __eq__(self, other): | |
| if self is other: | |
| return True | |
| return (type(self) == type(other) and | |
| self.bound == other.bound and | |
| self.is_upper_bound() == other.is_upper_bound()) | |
| def __ne__(self, other): | |
| return not self.__eq__(other) | |