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Treat your entire application as a lambda, where modular parts can be executed on short-lived infrastructure.

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flame lib flame terminator supervisor.ex
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lib/flame/terminator/supervisor.ex 

defmodule FLAME.Terminator.Supervisor do

  use Supervisor



  def start_link(opts) do

    sup_name = opts |> Keyword.fetch!(:name) |> Module.concat("Supervisor")

    Supervisor.start_link(__MODULE__, opts, name: sup_name)

  end



  def init(opts) do

    name = Keyword.fetch!(opts, :name)

    child_placement_sup = Module.concat(name, "ChildPlacementSup")

    terminator_opts = Keyword.merge(opts, child_placement_sup: child_placement_sup)



    children =

      [

        {DynamicSupervisor, name: child_placement_sup, strategy: :one_for_one},

        %{

          id: FLAME.Terminator,

          start: {FLAME.Terminator, :start_link, [terminator_opts]},

          type: :worker,

          shutdown: opts[:shutdown_timeout] || 30_000

        }

      ]



    Supervisor.init(children, strategy: :one_for_all)

  end

end