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spandex_phoenix

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Tools for integrating Phoenix with Spandex.

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spandex_phoenix lib spandex_phoenix plug add_context.ex
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lib/spandex_phoenix/plug/add_context.ex 

defmodule SpandexPhoenix.Plug.AddContext do

  @moduledoc false



  @behaviour Plug



  @default_opts [

    customize_metadata: &SpandexPhoenix.default_metadata/1,

    tracer: Application.get_env(:spandex_phoenix, :tracer)

  ]



  @impl Plug

  def init(opts), do: Keyword.merge(@default_opts, opts)



  @impl Plug

  def call(conn, opts) do

    tracer = opts[:tracer]



    if tracer.current_trace_id() do

      conn

      |> opts[:customize_metadata].()

      |> tracer.update_top_span()

    end



    conn

  end

end