Trace (opentelemetry.Opentelemetry.Trace)

type span = Span.t

val make_resource_spans : 
  ?service_name:string ->
  ?attrs:
    (string * [< `Bool of bool | `Int of int | `None | `String of string ])
      list ->
  Proto.Trace.span list ->
  Proto.Trace.resource_spans

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

Sync emitter.

This instructs the collector to forward the spans to some backend at a later point.

NOTE be careful not to call this inside a Gc alarm, as it can cause deadlocks.

type scope = Scope.t = {

trace_id : Trace_id.t;

span_id : Span_id.t;

mutable events : Event.t list;

mutable attrs : Span.key_value list;

}

val add_event : Scope.t -> ( unit -> Event.t ) -> unit

val add_attrs : Scope.t -> ( unit -> key_value list ) -> unit

val with_ : 
  ?force_new_trace_id:bool ->
  ?trace_state:string ->
  ?service_name:string ->
  ?attrs:(string * value) list ->
  ?kind:Span.kind ->
  ?trace_id:Trace_id.t ->
  ?parent:Span.id ->
  ?scope:Scope.t ->
  ?links:Span_link.t list ->
  string ->
  ( Scope.t -> 'a ) ->
  'a

Sync span guard.

parameter force_new_trace_id
if true (default false), the span will not use a surrounding context, or scope, or trace_id, but will always create a fresh new trace ID.
NOTE be careful not to call this inside a Gc alarm, as it can cause deadlocks.