def test_time_sorted_strategy_min_lag(self):
settings = {
'MIN_TIMESTAMP_LAG': 5,
}
settings_patch = patch.dict('carbon.conf.settings', settings)
settings_patch.start()
now = time.time()
self.metric_cache.store('old', (now - 10, 1.0))
self.metric_cache.store('new', (now, 2.0))
time_sorted_strategy = TimeSortedStrategy(self.metric_cache)
self.assertEqual('old', time_sorted_strategy.choose_item())
self.metric_cache.pop('old')
self.assertEqual(None, time_sorted_strategy.choose_item())
def test_time_sorted_strategy(self):
self.metric_cache.store('foo', (123456, 1.0))
self.metric_cache.store('foo', (123457, 2.0))
self.metric_cache.store('foo', (123458, 3.0))
self.metric_cache.store('bar', (123459, 4.0))
self.metric_cache.store('bar', (123460, 5.0))
self.metric_cache.store('baz', (123461, 6.0))
time_sorted_strategy = TimeSortedStrategy(self.metric_cache)
# In order: foo, bar, baz
self.assertEqual('foo', time_sorted_strategy.choose_item())
# 'baz' gets older points.
self.metric_cache.store('baz', (123450, 6.0))
self.metric_cache.store('baz', (123451, 6.0))
# But 'bar' is popped anyway, because sort has already happened
self.assertEqual('bar', time_sorted_strategy.choose_item())
self.assertEqual('baz', time_sorted_strategy.choose_item())
# Sort happens again
self.assertEqual('baz', time_sorted_strategy.choose_item())
self.assertEqual('foo', time_sorted_strategy.choose_item())
self.assertEqual('bar', time_sorted_strategy.choose_item())