HP HPE VAN SDN Controller 2.7 Administrator's Manual page 148

start
The earliest time to query for time-series data. The date and time in must be in the format
yyyy-mm-dd+hh:mm. If you specify an end but do not specify a start, the value used for
start is the time of the oldest instance of the metric that is within the configured age-out
time.
end
The most recent time to query for time-series data. The date and time in must be in the format
yyyy-mm-dd+hh:mm. If you specify a start but do not specify an end, the value used for
end is the time you enter the command.
interval
The interval each returned data point is to represent. This parameter is required if you specify
the start or the end parameter. The interval you specify must be equal to or greater than
the interval at which the metric's time-series data is persisted. Choose one of the following
values: 1, 5, 15, 30, 60, day, and all, where the numeric values represent the number of
minutes, day represents a 24-hour period, and all represents the summarized values over
the lifetime of the metric data collection.
If you do not specify parameters, only the last persisted time-series value for the metric is returned.
Specifying an interval summarizes the data, and enables you to quickly look for anomalous data.
For example, instead of viewing 1440 discrete minute-by-minute values for a specific metric over
the course of a day, you can request that each returned value represent 60 minutes so that the
number of returned values is more manageable and can be more easily inspected.
Summarizing the returned data for a period typically results in larger values for the metrics
themselves and larger values for the milliseconds spanned. The computation of the values
returned over longer intervals depends upon the type of metric. For example, gauge values are
averaged over the data points encompassed in the summary, but counter values are summed
over the summary interval.
Command example
curl --noproxy 10.1.1.9 -X GET \
--header "X-Auth-Token:3d61f0d3e61349359e6dbd82ec02c113" --fail -ksSfL \
--url
"https://10.1.1.9:8443/sdn/v2.0/metrics/431b746e-e62e-4874-a801-b1438eaac635?start=2014-09-23+18:00&interval=5"
Command output
{
"metric_values":{
"uid":"431b746e-e62e-4874-a801-b1438eaac635",
"type":"GAUGE",
"datapoint_count":6,
"datapoints":[
{
},
{
},
{
},
148 Metrics
"update_time":"Tue Sep 23 18:03:55 PDT 2014",
"milliseconds_span":300000,
"last":3.274097568E8
"update_time":"Tue Sep 23 18:08:55 PDT 2014",
"milliseconds_span":300000,
"last":3.133927072E8
"update_time":"Tue Sep 23 18:13:55 PDT 2014",
"milliseconds_span":300000,
"last":2.154562624E8