Bringing the discussion from github to here to get more feedback. https://github.com/prometheus/prometheus/issues/8763
At present the format used by count_values isn't specified in documentation. (It ends up using %f formatting). There are times when it is useful for count_values resulting label to be compatible with the labels produced for histogram "le" labels. (one such case is documented here, https://medium.com/@tristan_96324/prometheus-apdex-alerting-d17a065e39d0) While in the provided example, it is possible to produce the "le" label for matching via other means), it would still be convenient to offer a method of controlling the format used by count_values. In the github issue referenced about, it has been suggested that count_values arguments could be used to control the value format. We've suggested allowing a fmt.Printf style (actually strconv.FormatFloat), specification to be appended to the label name, perhaps via a comma. e.g. count_values("le,g.2") In addition, to support the bucket labels produced for OpenMetrics histograms, we could use 'o' to facilitate OpenMetrics compatible formatting (this is %g with s potential additional .0 appended to exact integer values). 'o' is unused by FormatFloat. I'm willing to undertake the work, if people agree, but appreciate that the method of specifying a formatting here probably warrants wider discussion. -- Tristan Colgate-McFarlane ---- "You can get all your daily vitamins from 52 pints of guiness, and a glass of milk" -- You received this message because you are subscribed to the Google Groups "Prometheus Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-developers/CAPGZSGKCw0-0Tp83i26M%2BJ70OLEF4W2dmMoX44zXOo2EoWypiA%40mail.gmail.com.
