Improving Application file in Phoenix project

Questions / Help
1

I want to improve my application file according to the latest elixir version, But it seems like we are far far away from the oldest few version as well for chilspec and Supervisor,

defmodule EvercamMedia do
  use Application
  require Logger
  import EvercamMedia.Util, only: [load_storage_servers: 1]

  # See http://elixir-lang.org/docs/stable/elixir/Application.html
  # for more information on OTP Applications
  def start(_type, _args) do
    import Supervisor.Spec, warn: false

    children = [
      {ConCache,[ttl_check_interval: :timer.seconds(0.1), global_ttl: :timer.seconds(2.5), name: :cache]},
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(0.1), global_ttl: :timer.seconds(1.5), name: :snapshot_schedule]}, id: :snapshot_schedule),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(0.1), global_ttl: :timer.minutes(1), name: :camera_lock]}, id: :camera_lock),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(1), global_ttl: :timer.hours(1), name: :users]}, id: :users),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(1), global_ttl: :timer.hours(1), name: :camera]}, id: :camera),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(1), global_ttl: :timer.hours(1), name: :cameras]}, id: :cameras),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(1), global_ttl: :timer.hours(1), name: :camera_full]}, id: :camera_full),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(1), global_ttl: :timer.hours(24), name: :snapshot_error]}, id: :snapshot_error),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(2), global_ttl: :timer.hours(24), name: :camera_thumbnail]}, id: :camera_thumbnail),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(2), global_ttl: :timer.hours(24), name: :current_camera_status]}, id: :current_camera_status),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(2), global_ttl: :timer.hours(6), name: :camera_response_times]}, id: :camera_response_times),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.seconds(1), global_ttl: :timer.hours(1), name: :do_camera_request]}, id: :do_camera_request),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(2), global_ttl: :timer.hours(24), name: :camera_recording_days]}, id: :camera_recording_days),
      Supervisor.child_spec({ConCache, [ttl_check_interval: :timer.hours(1), global_ttl: :timer.hours(1), name: :zoho_auth_token]}, id: :zoho_auth_token),
      worker(EvercamMedia.Scheduler, []),
      worker(EvercamMedia.Janitor, []),
      worker(EvercamMedia.StorageJson, []),
      supervisor(EvercamMediaWeb.Endpoint, []),
      supervisor(EvercamMedia.Snapshot.StreamerSupervisor, []),
      supervisor(EvercamMedia.Snapshot.WorkerSupervisor, []),
      supervisor(EvercamMedia.Snapmail.SnapmailerSupervisor, []),
      supervisor(EvercamMedia.SnapshotExtractor.ExtractorSupervisor, []),
      supervisor(EvercamMedia.EvercamBot.TelegramSupervisor, []),
      :hackney_pool.child_spec(:snapshot_pool, [timeout: 5000, max_connections: 1000]),
      :hackney_pool.child_spec(:seaweedfs_upload_pool, [timeout: 5000, max_connections: 1000]),
      :hackney_pool.child_spec(:seaweedfs_download_pool, [timeout: 5000, max_connections: 1000]),
    ]

    :ets.new(:storage_servers, [:set, :public, :named_table])
    # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
    # for other strategies and supported options
    load_storage_servers([])
    opts = [strategy: :one_for_one, name: EvercamMedia.Supervisor]
    Supervisor.start_link(children, opts)
  end

  # Tell Phoenix to update the endpoint configuration
  # whenever the application is updated.
  def config_change(changed, _new, removed) do
    EvercamMediaWeb.Endpoint.config_change(changed, removed)
    :ok
  end
end

This is my evercam_media.ex file, from what I have been reading/hearing, this file works perfectly fine but its all old syntax?

I want to remove, Supervisor and make it DynamicSupervisor compatible, any guidance will be wonderfull.

2

Yes the code is old…

This should not be neccessary

In my supervision tree, I only have this…

# Dynamic supervisor
Ilox.Scheduler.WorkerSup,

I put the child spec in the dynamic supervisor…


  def start_worker(id, args \\ %{}) do
    spec = %{
      id: Worker,
      start: {Worker, :start_link, [id, args]},
      restart: :transient,
      type: :worker
    }
    DynamicSupervisor.start_child(__MODULE__, spec)
  end

and I use Registry to set the name of the worker with via_tuple

  def start_link(name, record \\ %{}) do
    GenServer.start_link(__MODULE__, record, name: via_tuple(name))
  end
  ...
  defp via_tuple(name), do: {:via, Registry, {RegSchedulers, name}}

It’s a bit long to make the changes, I did it first on a test project, and try to get my first dyn server working before changing older projects.