Opentelemetry.GlobalsSourceProcess-wide metadata, environment variables, etc.
Global attributes, initially set via OTEL_RESOURCE_ATTRIBUTES and modifiable by the user code. They will be attached to each outgoing metrics/traces.
Default span kind in Span.create. This will be used in all spans that do not specify ~kind explicitly. It can be convenient to set "client" or "server" uniformly in here.
val mk_attributes :
?service_name:string ->
?attrs:
(string * [< `Bool of bool | `Int of int | `None | `String of string ])
list ->
unit ->
Proto.Common.key_value list