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0.1.0
Spawn is the core lib for Spawn Actors System
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lib/sidecar/grpc/generators/reflection_server_generator.ex
defmodule Sidecar.Grpc.Generators.ReflectionServerGenerator do
@moduledoc """
Module for generating a gRPC reflection server module.
This module implements the `ProtobufGenerate.Plugin` behaviour to generate a gRPC reflection server
module that includes specified gRPC services for reflection purposes.
"""
@behaviour ProtobufGenerate.Plugin
alias Protobuf.Protoc.Generator.Util
@impl true
def template do
"""
defmodule Sidecar.GRPC.Reflection.Server do
defmodule V1 do
use GrpcReflection.Server, version: :v1, services: [
<%= for service_name <- @services do %>
<%= service_name %>.Service,
<% end %>
]
end
defmodule V1Alpha do
use GrpcReflection.Server, version: :v1alpha, services: [
<%= for service_name <- @services do %>
<%= service_name %>.Service,
<% end %>
]
end
end
"""
end
@impl true
def generate(ctx, %Google.Protobuf.FileDescriptorProto{name: name, service: svcs} = _desc) do
current_services = :persistent_term.get(:grpc_reflection_services, [])
{_name,
[
services: services
]} = result = do_generate(ctx, name, svcs, current_services)
:persistent_term.put(:grpc_reflection_services, services)
result
end
defp do_generate(_ctx, name, nil, current_services) do
{name,
[
services: current_services
]}
end
defp do_generate(_ctx, name, [], current_services) do
{name,
[
services: current_services
]}
end
defp do_generate(ctx, _name, svcs, current_services) do
services =
svcs
|> Enum.map(fn svc -> Util.mod_name(ctx, [Macro.camelize(svc.name)]) end)
|> Kernel.++(current_services)
{List.first(services),
[
services: services
]}
end
end