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grains

0.3.2
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A framework to implement process data flows using declarative flow graphs.

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grains lib grains support subscriber.ex
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lib/grains/support/subscriber.ex 

defmodule Grains.Support.Subscriber do

  @moduledoc """

  A grain to pull message and forward pushed messages to a subscribing process.



  This grain is meant for testing purposes, where the incoming messages

  should be forwarded to the test process.

  """



  use Grains.GenGrain



  @impl true

  def init(args) do

    subscriber = Keyword.fetch!(args, :subscriber)

    {:ok, subscriber}

  end



  def handle_push(msg, _from, subscriber) do

    send(subscriber, msg)

    {:noreply, subscriber}

  end



  @impl true

  def handle_cast(:pull, subscriber) do

    pull()

    {:noreply, subscriber}

  end

end