feat(gl): scaffold general ledger grpc service

cmd/gl/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"gl/application/health"
+	"gl/infrastructure/config"
+	grpcadapter "gl/interface/grpc"
+)
+
+func main() {
+	configPath := flag.String("conf", "./gl.cfg.toml", "path to the TOML configuration file")
+	flag.Parse()
+
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		slog.Error("load configuration", "error", err)
+		os.Exit(1)
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	handler := grpcadapter.NewHealthHandler(health.NewService(nil))
+	slog.Info("starting GL gRPC service", "host", cfg.GRPC.Host, "port", cfg.GRPC.Port)
+	serverConfig := grpcadapter.ServerConfig{
+		Host:            cfg.GRPC.Host,
+		Port:            cfg.GRPC.Port,
+		ShutdownTimeout: cfg.GRPC.ShutdownTimeout,
+	}
+	if err := grpcadapter.Run(ctx, serverConfig, handler); err != nil {
+		slog.Error("GL service stopped", "error", err)
+		os.Exit(1)
+	}
+}