package opentelemetry

  1. Overview
  2. Docs
Core library for instrumentation and serialization for https://opentelemetry.io

Install 

dune-project
 Dependency

github.com Readme Changelog Edit opam file Versions (17)

Authors

  1. O
    ocaml-tracing
  2. E
    ELLIOTTCABLE <opam@ell.io>
  3. T
    the imandra team

Maintainers

  1. O
    ocaml-tracing

Sources

opentelemetry-0.90.tbz
sha256=c3989bb678f57e5276209d3c60afb29cdca33122288de55e591fbbe2e50a662c
sha512=ba8339256c9b2d8c99c8304991a3047f280a01e492add4cf82bf1d43dfa51e790366c09c6901c0501b8b8e1f810c6e128e33dd33542d785013407f642ade4eea

doc/opentelemetry.core/Opentelemetry_core/Instrument/index.html

Module Opentelemetry_core.InstrumentSource

Global registry of metric instruments.

Instruments are stateful accumulators (counters, gauges, histograms, …). update is called at any time to record a value; emit is called at collection time by a Meter.t, which supplies the clock.

All instruments register themselves into a global list on creation via register, so any meter can collect the full set in one pass. Make sure to only create instruments at the toplevel so that the list doesn't grow forever.

Sourcetype 'a t = {
  1. kind : string;
    (*

    "counter", "gauge", "histogram", …

    *)
  2. name : string;
  3. emit : clock:Clock.t -> unit -> Metrics.t list;
    (*

    Snapshot current accumulated state into metrics.

    *)
  4. update : 'a -> unit;
    (*

    Record a new value.

    *)
}
Sourceval register : 'a t -> unit

Add an instrument's emit to all. Called automatically by the standard instrument-creation functions.

Sourcemodule type CUSTOM_IMPL = sig ... end

Implementation details for a custom stateful instrument. Pass to Make to obtain a create function.

Sourcemodule Make (I : CUSTOM_IMPL) : sig ... end

Build a custom instrument type from a CUSTOM_IMPL. The returned create registers the instrument into all automatically.

Sourcemodule Int_counter : sig ... end
Sourcemodule Float_counter : sig ... end
Sourcemodule Int_gauge : sig ... end
Sourcemodule Float_gauge : sig ... end
Sourcemodule Histogram : sig ... end
Sourcemodule Internal : sig ... end