Distributed Elixir in Amazon ECS

Questions & Help Questions
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11

We use a custom Peerage.Provider implementation like

defmodule AwsServiceDiscovery do
  @behaviour Peerage.Provider

  @impl true
  def poll do
    dns_name = Application.fetch_env!(:peerage, :dns_name)
    app_name = Application.fetch_env!(:peerage, :app_name)

    :inet_res.lookup(String.to_charlist(dns_name), :in, :srv)
    |> Enum.flat_map(fn {_priority, _weight, _port, srv_dns_name} ->
      :inet_res.lookup(srv_dns_name, :in, :a)
      |> Enum.map(fn ip ->
        :"#{app_name}@#{:inet.ntoa(ip) |> to_string}"
      end)
    end)
  end
end