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Spawn is the core lib for Spawn Actors System
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lib/actors/actor/entity/supervisor.ex
defmodule Actors.Actor.Entity.Supervisor do
use DynamicSupervisor
alias Eigr.Functions.Protocol.Actors.{Actor, ActorSystem}
alias Actors.Actor.Entity.EntityState
def child_spec() do
{
PartitionSupervisor,
child_spec: DynamicSupervisor, name: __MODULE__
}
end
def start_link(_) do
DynamicSupervisor.start_link(
__MODULE__,
[
shutdown: 120_000,
strategy: :one_for_one
],
name: __MODULE__
)
end
@impl true
def init(args), do: DynamicSupervisor.init(args)
@doc """
Adds a Actor to the dynamic supervisor.
"""
@spec lookup_or_create_actor(ActorSystem.t(), Actor.t(), any()) :: {:ok, any}
def lookup_or_create_actor(system, actor, opts \\ [])
def lookup_or_create_actor(system, %Actor{} = actor, opts) when is_nil(system) do
entity_state = %EntityState{system: nil, actor: actor, opts: opts}
child_spec = %{
id: Actors.Actor.Entity,
start: {Actors.Actor.Entity, :start_link, [entity_state]},
restart: :transient
}
case DynamicSupervisor.start_child(via(), child_spec) do
{:error, {:already_started, pid}} -> {:ok, pid}
{:ok, pid} -> {:ok, pid}
end
end
def lookup_or_create_actor(
%ActorSystem{name: actor_system} = _system,
%Actor{} = actor,
opts
) do
entity_state = %EntityState{system: actor_system, actor: actor, opts: opts}
child_spec = %{
id: Actors.Actor.Entity,
start: {Actors.Actor.Entity, :start_link, [entity_state]},
restart: :transient
}
case DynamicSupervisor.start_child(via(), child_spec) do
{:error, {:already_started, pid}} -> {:ok, pid}
{:ok, pid} -> {:ok, pid}
end
end
defp via(), do: {:via, PartitionSupervisor, {__MODULE__, self()}}
end