Api to interact with livebook cells?

restlessronin · May 6, 2023, 5:28am

is there a livebook api to read the content of cells, create new cells, etc. from code within the running notebook?

w0rd-driven · May 7, 2023, 2:47pm

I keep coming back to this example as a way of automating Livebook. It’s 9 months old so it could easily be broken now but it shows how to load notebooks and evaluate cells.

github.com

podium/elixir-secure-coding/blob/grader/grader.exs

# Usage: mix run grader.exs

defmodule Grader.Client do
  use GenServer

  alias Livebook.{Session, LiveMarkdown}

  def run_and_save(notebook_path) do
    {:ok, pid} = GenServer.start(__MODULE__, {notebook_path})

    ref = Process.monitor(pid)

    receive do
      {:DOWN, ^ref, :process, _pid, _reason} -> :ok
    end
  end

  @impl true
  def init({notebook_path}) do
    IO.puts("Evaluating: #{notebook_path}")

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This is outside of Livebook to my knowledge but there isn’t much in the way of how that is supposed to execute. I don’t believe notebooks have access to the Livebook namespace to automate actions but I haven’t really been keeping track intimately. I’d love to know if you find something more useful or get the above working. I haven’t had a need for it so I hadn’t invested any time in trying to understand how it executes.