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Simple building blocks for building elixir web apps

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piazza_core lib ecto uuid.ex
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lib/ecto/uuid.ex 

defmodule Piazza.Ecto.UUID do

  def generate_monotonic() do

    timestamp = :os.system_time(:millisecond)

    random = :crypto.strong_rand_bytes(10)

    <<u0::48, _::4, u1::12, _::2, u2::62>> = <<timestamp::48, random::binary>>

    {:ok, res} = Ecto.UUID.load(<<u0::48, 4::4, u1::12, 2::2, u2::62>>)

    res

  end



  def decode(<<timestamp::48, rand::binary>>) do

    {:ok, {timestamp, rand}}

  end

  def decode(_), do: :error

end