feat: Challenge redislabs-training#2

Author: hhow09

redisolar/dao/redis/metric.py

@@ -120,6 +120,8 @@ def insert_metric(self, site_id: int, value: float, unit: MetricUnit,
         minute_of_day = self._get_day_minute(time) # pylint: disable=unused-variable
 
         # START Challenge #2
+        pipeline.zadd(metric_key, {f'{value}:{minute_of_day}': minute_of_day})
+        pipeline.expire(metric_key, METRIC_EXPIRATION_SECONDS)        
         # END Challenge #2
 
     def get_recent(self, site_id: int, unit: MetricUnit, time: datetime.datetime,

tests/dao/redis/test_metric.py

@@ -49,16 +49,13 @@ def _test_insert_and_retrieve(readings: List[MeterReading],
 
 
 # Challenge #2
-@pytest.mark.skip("Remove for challenge #2")
 def test_small(metric_dao, readings):
     _test_insert_and_retrieve(readings, metric_dao, 1)
 
 
-@pytest.mark.skip("Remove for challenge #2")
 def test_one_day(metric_dao, readings):
     _test_insert_and_retrieve(readings, metric_dao, 60 * 24)
 
 
-@pytest.mark.skip("Remove for challenge #2")
 def test_multiple_days(metric_dao, readings):
     _test_insert_and_retrieve(readings, metric_dao, 60 * 70)