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0.1.0
Spawn Elixir SDK is the support library for the Spawn Actors System
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lib/system/supervisor.ex
defmodule SpawnSdk.System.Supervisor do
@moduledoc """
Documentation for `System.Supervisor`.
Start Supervisor tree like this:
defmodule MyApp.Application do
use Application
@impl true
def start(_type, _args) do
children = [
{
SpawnSdk.System.Supervisor,
system: "my-system", actors: [MyActor]
}
]
opts = [strategy: :one_for_one, name: MyApp.Supervisor]
Supervisor.start_link(children, opts)
end
"""
use Supervisor
import Spawn.Utils.Common, only: [supervisor_process_logger: 1]
alias Actors.Config.PersistentTermConfig, as: Config
@impl true
def init(opts) do
Config.load()
unless _system = opts[:system] do
raise ArgumentError, "expected :system option to be given"
end
unless _actors = opts[:actors] do
raise ArgumentError, "expected :actors option to be given"
end
system = Keyword.get(opts, :system)
actors = Keyword.get(opts, :actors)
extenal_subscribers = Keyword.get(opts, :extenal_subscribers, [])
if Config.get(:actor_system_name) != system do
raise ArgumentError,
"configured system (#{inspect(system)}) is different from env PROXY_ACTOR_SYSTEM_NAME (#{Config.get(:actor_system_name)})"
end
start_persisted_system(system)
children =
[
{Sidecar.Supervisor, []},
%{
id: :spawn_system_register_task,
start:
{Task, :start_link,
[
fn ->
Process.flag(:trap_exit, true)
SpawnSdk.System.SpawnSystem.register(system, actors)
receive do
{:EXIT, _pid, _reason} ->
:persistent_term.erase(system)
:ok
end
end
]}
}
] ++ extenal_subscribers
Supervisor.init(children, strategy: :one_for_one)
end
def start_link(state) do
Supervisor.start_link(
__MODULE__,
state,
shutdown: 120_000,
strategy: :one_for_one
)
end
defp start_persisted_system(system) do
if :persistent_term.get(system, false) do
raise "System already registered"
else
:persistent_term.put(system, true)
:ets.new(:"#{system}:actors", [:public, :named_table, read_concurrency: true])
end
end
end