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open_telemetry_decorator

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A function decorator for OpenTelemetry traces

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open_telemetry_decorator lib validator.ex
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lib/validator.ex 

defmodule Validator do

  @moduledoc false



  def validate_args(span_name, attr_keys) do

    if not (is_binary(span_name) and span_name != ""),

      do: raise(ArgumentError, "span_name must be a non-empty string")



    if not (is_list(attr_keys) and atoms_or_lists_of_atoms_only?(attr_keys)),

      do:

        raise(ArgumentError, "attr_keys must be a list of atoms, including nested lists of atoms")

  end



  defp atoms_or_lists_of_atoms_only?(list) when is_list(list) do

    Enum.all?(list, fn item ->

      (is_list(item) && atoms_or_lists_of_atoms_only?(item)) or is_atom(item)

    end)

  end



  defp atoms_or_lists_of_atoms_only?(item) when is_atom(item) do

    true

  end

end