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Spawn is the core lib for Spawn Actors System
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lib/sidecar/grpc/generators/generator_accumulator.ex
defmodule Sidecar.GRPC.Generators.GeneratorAccumulator do
@moduledoc """
Module for generating a gRPC proxy endpoint module.
This module implements the `ProtobufGenerate.Plugin` behaviour to generate a gRPC proxy endpoint
module that includes specified gRPC services.
"""
@behaviour ProtobufGenerate.Plugin
alias Protobuf.Protoc.Generator.Util
require Logger
@impl true
def template do
""
end
@impl true
def generate(ctx, %Google.Protobuf.FileDescriptorProto{service: [_ | _] = svcs} = _desc) do
svcs =
Enum.filter(svcs, fn svc ->
Map.get(svc.options || %{}, :__pb_extensions__, %{})
|> Map.get({Spawn.Actors.PbExtension, :actor})
end)
current_services = :persistent_term.get(:grpc_services, [])
descriptors = (:persistent_term.get(:proto_file_descriptors, []) ++ svcs) |> Enum.uniq()
services = services_to_module(ctx, svcs, current_services)
:persistent_term.put(:grpc_services, services)
:persistent_term.put(:proto_file_descriptors, descriptors)
{"ProxyEndpoint", [render: true]}
end
def generate(_ctx, _opts), do: {"unknown", [render: false]}
defp services_to_module(_ctx, nil, current_services), do: current_services
defp services_to_module(_ctx, [], current_services), do: current_services
defp services_to_module(ctx, svcs, current_services) do
svcs
|> Enum.map(fn svc -> Util.mod_name(ctx, [Macro.camelize(svc.name)]) end)
|> Kernel.++(current_services)
end
end