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o11y

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Opinionated utilities for working with OpenTelemetry in Elixir.

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o11y lib o11y attribute_processor.ex
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lib/o11y/attribute_processor.ex 

defmodule O11y.AttributeProcessor do

  @moduledoc """

  Functions for manipulating attribute names

  """



  def prefix(name, prefix) when is_nil(prefix) or prefix == "" do

    name |> to_string() |> trim_leading()

  end



  def prefix(name, prefix) do

    name = name |> to_string() |> trim_leading()

    prefix = prefix |> to_string() |> trim_leading()



    if String.starts_with?(name, prefix <> ".") do

      name

    else

      "#{trim_leading(prefix)}.#{trim_leading(name)}"

    end

  end



  def trim_leading(name) when is_atom(name) do

    name |> to_string() |> trim_leading()

  end



  def trim_leading("_" <> name), do: name

  def trim_leading(name), do: name

end