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opentelemetry

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Implementation of stable OpenTelemetry signals

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opentelemetry src otel_utils.erl
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src/otel_utils.erl 

-module(otel_utils).



-export([instrumentation_library/2]).



-include("otel_span.hrl").



instrumentation_library(Name, Vsn) ->

    #instrumentation_library{name=name_to_binary(Name),

                             version=vsn_to_binary(Vsn)}.



%% Vsn can't be an atom or anything but a list or binary

%% so return `undefined' if it isn't a list or binary.

vsn_to_binary(Vsn) when is_list(Vsn) ->

    list_to_binary(Vsn);

vsn_to_binary(Vsn) when is_binary(Vsn) ->

    Vsn;

vsn_to_binary(_) ->

    undefined.



%% name can be atom, list or binary. But atom `undefined'

%% must stay as `undefined' atom.

name_to_binary(undefined)->

    undefined;

name_to_binary(T) when is_atom(T) ->

    atom_to_binary(T, utf8);

name_to_binary(T) when is_list(T) ->

    list_to_binary(T);

name_to_binary(T) when is_binary(T) ->

    T.