package opentelemetry-lwt

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in-package search v0.2.0

opentelemetry-lwt
- Opentelemetry_lwt
  - Logs
  - Metrics
  - Trace

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include module type of struct include Opentelemetry.Trace end

Traces.

See the spec

type span = Opentelemetry.Span.t

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

val emit : 
  ?service_name:string ->
  ?attrs:
    (string
     * [< `Bool of bool
       | `Float of float
       | `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 = Opentelemetry.Scope.t = {

trace_id : Opentelemetry.Trace_id.t;
span_id : Opentelemetry.Span_id.t;
mutable events : Opentelemetry.Event.t list;
mutable attrs : Opentelemetry.Span.key_value list;

}

deprecated use Scope.t

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

deprecated use Scope.add_event

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

deprecated use Scope.add_attrs

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

Sync span guard.

Notably, this includes implicit scope-tracking: if called without a ~scope argument (or ~parent/~trace_id), it will check in the Ambient_context for a surrounding environment, and use that as the scope. Similarly, it uses Scope.with_ambient_scope to set a new scope in the ambient context, so that any logically-nested calls to with_ will use this span as their parent.

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

parameter force_new_trace_id
if true (default false), the span will not use a ambient scope, the ~scope argument, nor ~trace_id, but will instead always create fresh identifiers for this span

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

Sync span guard