Traceparent (octez-libs.Octez_telemetry.Traceparent)

type t

A traceparent describes the position of the incoming request in its trace graph in a portable, fixed-length format.

See https://www.w3.org/TR/trace-context/#design-overview

type 'a instrumented = {

origin : t option;
data : 'a;

}

A piece of data with an attached origin from distributed trace graph.

val encoding : t Tezos_base.TzPervasives.Data_encoding.encoding

val to_string : t -> string

val from_string : string -> (t, string) Stdlib.result

val from_scope : Opentelemetry.Scope.t -> t

from_scope scope constructs a traceparent that can be used to link a new span to scope.

val instrument : ?origin:Opentelemetry.Scope.t -> 'a -> 'a instrumented

instrument ?origin x attach a traceparent to provided origin. If origin is omitted, the current scope from the ambient context is used.

val current : unit -> t option

current () returns the traceparent identifiying the current scope from the ambient context.

val propagate : 
  ?service_name:string ->
  ?attrs:('a -> (string * Opentelemetry.value) Tezos_base.TzPervasives.trace) ->
  ?kind:Opentelemetry_proto.Trace.span_span_kind ->
  ?links:Opentelemetry_proto.Trace.span_link Tezos_base.TzPervasives.trace ->
  span_name:('a -> string) ->
  'a instrumented ->
  (Opentelemetry.Scope.t -> 'a -> 'b Lwt.t) ->
  'b Lwt.t

propagate span_name x k creates a span for the execution of k x.data.