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CloudWatch: Update Period auto to take retention into account (#37424)

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* now to get it to build

* modified names, added the 455 day case, and added a comment

* removed wireguard override i used for my local

* updated the docs
This commit is contained in:
Kai Hayashi
2021-09-01 07:44:47 +00:00
committed by GitHub
parent f2c4346cc4
commit 6e0f18b13a
3 changed files with 42 additions and 2 deletions
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15
pkg/tsdb/cloudwatch/request_parser.go
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@@ -69,7 +69,7 @@ func parseRequestQuery(model *simplejson.Json, refId string, startTime time.Time
var period int
if strings.ToLower(p) == "auto" || p == "" {
deltaInSeconds := endTime.Sub(startTime).Seconds()
periods := []int{60, 300, 900, 3600, 21600, 86400}
periods := getRetainedPeriods(time.Since(startTime))
datapoints := int(math.Ceil(deltaInSeconds / 2000))
period = periods[len(periods)-1]
for _, value := range periods {
@@ -123,6 +123,19 @@ func parseRequestQuery(model *simplejson.Json, refId string, startTime time.Time
}, nil
}
func getRetainedPeriods(timeSince time.Duration) []int {
// See https://aws.amazon.com/about-aws/whats-new/2016/11/cloudwatch-extends-metrics-retention-and-new-user-interface/
if timeSince > time.Duration(455)*24*time.Hour {
return []int{21600, 86400}
} else if timeSince > time.Duration(63)*24*time.Hour {
return []int{3600, 21600, 86400}
} else if timeSince > time.Duration(15)*24*time.Hour {
return []int{300, 900, 3600, 21600, 86400}
} else {
return []int{60, 300, 900, 3600, 21600, 86400}
}
}
func parseStatistics(model *simplejson.Json) []string {
var statistics []string
for _, s := range model.Get("statistics").MustArray() {