def _getMetricStatisticsTimeSlice(cls, period):
""" Determine metric statistics collection time range for the maximum range
appropriate for aggregation of the statistic values of an Autostack
:param period: Metric period in seconds; must be multiple of 60
:type period: integer
:returns: time range for collecting metric statistics adjusted for integral
number of metric periods.
:rtype: htm-it.app.runtime.aggregator_utils.TimeRange
"""
startTime, endTime = cloudwatch_utils.getMetricCollectionTimeRange(
startTime=None,
endTime=None,
period=period)
return TimeRange(start=startTime, end=endTime)
def _getMetricCollectionTimeSlice(cls, startTime, period):
""" Determine metric data collection time range.
:param startTime: UTC start time of planned metric data collection; may be
None when called for the first time, in which case a start
time will be calculated and returned in the result (even
if there is not enough time for at least one period of
metric data collection)
:type startTime: datetime.datetime
:param period: Metric period in seconds; must be multiple of 60
:type period: integer
:returns: time range for collecting metrics adjusted for integral number of
periods. If there is not enough time for at least one period,
then end-time will be set equal to start-time
:rtype: htm-it.app.runtime.aggregator_utils.TimeRange
"""
startTime, endTime = cloudwatch_utils.getMetricCollectionTimeRange(
startTime=startTime,
endTime=None,
period=period)
return TimeRange(start=startTime, end=endTime)