package opentelemetry-lwt

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include module type of struct include Opentelemetry.Metrics end

Metrics.

See the spec

type t

A single metric, measuring some time-varying quantity or statistical distribution. It is composed of one or more data points that have precise values and time stamps. Each distinct metric should have a distinct name.

val float : ?start_time_unix_nano:Opentelemetry.Timestamp_ns.t -> ?now:Opentelemetry.Timestamp_ns.t -> ?attrs: (string * [< `Bool of bool | `Int of int | `None | `String of string ]) list -> float -> Opentelemetry__.Metrics_types.number_data_point

Number data point, as a float

val int : ?start_time_unix_nano:Opentelemetry.Timestamp_ns.t -> ?now:Opentelemetry.Timestamp_ns.t -> ?attrs: (string * [< `Bool of bool | `Int of int | `None | `String of string ]) list -> int -> Opentelemetry__.Metrics_types.number_data_point

Number data point, as an int

val gauge : name:string -> ?description:string -> ?unit_:string -> Opentelemetry__.Metrics_types.number_data_point list -> t

Aggregation of a scalar metric, always with the current value

type aggregation_temporality =
  1. | Aggregation_temporality_unspecified
  2. | Aggregation_temporality_delta
  3. | Aggregation_temporality_cumulative
val sum : name:string -> ?description:string -> ?unit_:string -> ?aggregation_temporality:aggregation_temporality -> ?is_monotonic:bool -> Opentelemetry__.Metrics_types.number_data_point list -> t

Sum of all reported measurements over a time interval

val histogram_data_point : ?start_time_unix_nano:Opentelemetry.Timestamp_ns.t -> ?now:Opentelemetry.Timestamp_ns.t -> ?attrs: (string * [< `Bool of bool | `Int of int | `None | `String of string ]) list -> ?exemplars:Opentelemetry__.Metrics_types.exemplar list -> ?explicit_bounds:float list -> ?sum:float -> bucket_counts:int64 list -> count:int64 -> unit -> Opentelemetry__.Metrics_types.histogram_data_point

Histogram data

  • parameter count

    number of values in population (non negative)

  • parameter sum

    sum of values in population (0 if count is 0)

  • parameter bucket_counts

    count value of histogram for each bucket. Sum of the counts must be equal to count. length must be 1+length explicit_bounds

  • parameter explicit_bounds

    strictly increasing list of bounds for the buckets

val histogram : name:string -> ?description:string -> ?unit_:string -> ?aggregation_temporality: Opentelemetry__.Metrics_types.aggregation_temporality -> Opentelemetry__.Metrics_types.histogram_data_point list -> t
val make_resource_metrics : ?service_name:string -> ?attrs: (string * [< `Bool of bool | `Int of int | `None | `String of string ]) list -> t list -> Opentelemetry__.Metrics_types.resource_metrics

Aggregate metrics into a Proto.Metrics.resource_metrics

val emit : ?attrs: (string * [< `Bool of bool | `Int of int | `None | `String of string ]) list -> t list -> unit

Emit some metrics to the collector (sync). This blocks until the backend has pushed the metrics into some internal queue, or discarded them.

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