Designing Elixir Systems with OTP/

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Writing the Proctor Boundary Server

Writing the Proctor Boundary Server

Let’s start implementing a GenServer in our newly created Proctor module.

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We’ll create a new Proctor module in the Boundary namespace to implement a GenServer to schedule quizzes. It’s a single API, Proctor.schedule_quiz, but a complex one. Let’s walk through it step by step.

Establishing our GenServer

Create a new file /lib/mastery/boundary/proctor.ex so we can establish our GenServer:

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defmodule Mastery.Boundary.Proctor do
  use GenServer
  require Logger
  alias Mastery.Boundary.{QuizManager, QuizSession}
end

We create the usual ceremonial module definition and a few aliases. We’ll need access to ...

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