Spandex Asynchronous Tracing Example

spandex_async.ex

defmodule MyApp.Tracer do                                                                                                                                                                                                                                                
  @moduledoc "Spandex Tracer"
  use Spandex.Tracer, otp_app: :my_app

  def async(func) do
    case current_context() do
      {:ok, tracer_ctx} ->
        Task.async(fn ->
          continue_trace("async", tracer_ctx, resource: "Task.async", service: :my_app_async)

          try do
            func.()
          after
            finish_trace()
          end
        end)

      {:error, _reason} ->
        Task.async(fn -> func.() end)
    end
  end
end