prom 0.3 · OCaml Package

module SMap : Stdlib.Map.S with type key := string

module FSet : Stdlib.Set.S with type elt := float

module FMap : Stdlib.Map.S with type key := float

module KLL : sig ... end

type 'a complex = {

}

type histogram = int FMap.t complex

type summary = (KLL.t * FSet.t) complex

val cumulate : int FMap.t -> int FMap.t

cumulate hist is the cumulative histogram of hist, suitable to ingestion by Prometheus.

val complex_cum_fmap : int -> float -> int FMap.t -> histogram

complex_cum count sum data is a complex value constructed from count, sum and data where data is a cumulated histogram or CDF.

val complex_cum : int -> float -> (float * int) list -> histogram

complex_cum count sum data is a complex value constructed from count, sum and data where data is a cumulated histogram or CDF.

val complex : int -> float -> (float * int) list -> histogram

complex count sum data is a complex value constructed from count, sum and data where data is a non-cumulated histogram.

module LabelsMap : Stdlib.Map.S with type key := string SMap.t

A kv map (label) uniquely identifying a time series.

type 'a metric = 'a series LabelsMap.t

Type of a metric. A metric associates a time series to a set of labels.

and 'a series = {

}

Type of a time series. Contains an optional timestamp.

val create_series : ?ts:Ptime.t -> 'a -> 'a series

type t

Type of a Prometheus metric. Contains a name, an optional help text, a type, and labels associated to a value.

val name : t -> string

val help : t -> string option

val add_labels : (string * string) list -> t -> t

add_labels labels t will add labels to all series in t.

val merge : t -> t -> t

val pp : t Fmt.t

val pp_list : t list Fmt.t

val counter : 
  ?help:string ->
  string ->
  ((string * string) list * float series) list ->
  t

val gauge : 
  ?help:string ->
  string ->
  ((string * string) list * float series) list ->
  t

val histogram : 
  ?help:string ->
  string ->
  ((string * string) list * histogram series) list ->
  t

val summary : 
  ?help:string ->
  string ->
  ((string * string) list * summary series) list ->
  t

package prom