helpers

Documentation

Index

• func AdjustStep(start, stop, maxPointsPerQuery, minStep int64) int64
• func AlignValues(startTime, stopTime, step int64, promValues []types.Value) []float64
• func ConvertGraphiteTargetToPromQL(query string) string
• func PromMetricToGraphite(metric map[string]string) string
• func PromethizeTagValue(tagValue string) (string, types.Tag)
• func SeriesByTagToPromQL(step, target string) (string, string)
• func SplitTagValues(query string) map[string]types.Tag

Functions

func AdjustStep

func AdjustStep(start, stop, maxPointsPerQuery, minStep int64) int64

AdjustStep adjusts step keeping in mind default/configurable limit of maximum points per query Steps sequence is aligned with Grafana. Step progresses in the following order: minimal configured step if not default => 20 => 30 => 60 => 120 => 300 => 600 => 900 => 1200 => 1800 => 3600 => 7200 => 10800 => 21600 => 43200 => 86400

func AlignValues

func AlignValues(startTime, stopTime, step int64, promValues []types.Value) []float64

AlignValues inserts math.NaN() in place of gaps in data from Prometheus

func ConvertGraphiteTargetToPromQL

func ConvertGraphiteTargetToPromQL(query string) string

ConvertGraphiteTargetToPromQL - converts graphite target string to PromQL friendly format

func PromMetricToGraphite

func PromMetricToGraphite(metric map[string]string) string

PromMetricToGraphite converts prometheus metric name to a format expected by graphite

func PromethizeTagValue

func PromethizeTagValue(tagValue string) (string, types.Tag)

PromethizeTagValue - accept 'Tag=value' or 'Tag=~value' string and return sanitized version of it

func SeriesByTagToPromQL

func SeriesByTagToPromQL(step, target string) (string, string)

SeriesByTagToPromQL converts graphite SeriesByTag to PromQL will return step if __step__ is passed

func SplitTagValues

func SplitTagValues(query string) map[string]types.Tag

SplitTagValues - For given tag-value list converts it to more usable map[string]Tag, where string is TagName