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Spawn is the core lib for Spawn Actors System
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lib/sidecar/grpc/supervisor.ex
defmodule Sidecar.GRPC.Supervisor do
@moduledoc false
use Supervisor
require Logger
alias Actors.Config.PersistentTermConfig, as: Config
alias Sidecar.GRPC.CodeGenerator, as: Generator
def init(opts) do
Logger.debug("Parser and compiling Protocol Buffers...")
children =
with {:compiling_protos, :ok} <-
{:compiling_protos, Generator.compile_protos()},
{:load_modules, {:ok, modules}} <- {:load_modules, Generator.load_modules(opts)},
{:compiling_modules, :ok} <- {:compiling_modules, Generator.compile_modules(modules)},
{:after_compile_hook, :ok} <- {:after_compile_hook, Generator.after_compile_hook()} do
[]
|> maybe_start_reflection(Config.get(:grpc_reflection_enabled))
|> maybe_start_grpc_server(Config.get(:grpc_server_enabled))
else
{:compiling_protos, {:ok, :nothing_to_compile}} ->
[]
{:compiling_protos, error} ->
raise ArgumentError,
"Failed during compilation of ActorHost Protobufs files. Details: #{inspect(error)}"
{:load_modules, error} ->
raise ArgumentError,
"Failed on load of ActorHost Protobufs modules. Details: #{inspect(error)}"
{:compiling_modules, error} ->
raise ArgumentError,
"Failed during compilation of ActorHost protobufs modules. Details: #{inspect(error)}"
error ->
raise ArgumentError,
"Failed to load ActorHost Protobufs modules. Details: #{inspect(error)}"
end
Supervisor.init(children, strategy: :one_for_one)
end
defp maybe_start_reflection(children, false), do: children
defp maybe_start_reflection(children, true) do
Logger.info("Starting gRPC Reflection...")
(children ++ [{GrpcReflection, []}]) |> List.flatten()
end
defp maybe_start_grpc_server(children, false), do: children
defp maybe_start_grpc_server(children, true) do
port = Config.get(:grpc_port)
Logger.debug("Starting gRPC Server on port #{inspect(port)}...")
(children ++
[
{GRPC.Server.Supervisor,
endpoint: Sidecar.GRPC.ProxyEndpoint, port: port, start_server: true}
])
|> List.flatten()
end
def start_link(opts) do
Supervisor.start_link(
__MODULE__,
opts,
name: __MODULE__,
strategy: :one_for_one
)
end
end