Add realtime gateway and simulator bridge

realtime-gateway/cmd/gateway/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"realtime-gateway/internal/config"
+	"realtime-gateway/internal/gateway"
+	"realtime-gateway/internal/logging"
+)
+
+func main() {
+	configPath := flag.String("config", "./config/dev.json", "path to config file")
+	flag.Parse()
+
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		panic(err)
+	}
+
+	logger := logging.New()
+	app, err := gateway.NewServer(cfg, logger)
+	if err != nil {
+		logger.Error("failed to create server", "error", err)
+		os.Exit(1)
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	errCh := make(chan error, 1)
+	go func() {
+		errCh <- app.Run(ctx)
+	}()
+
+	select {
+	case <-ctx.Done():
+		logger.Info("shutdown signal received")
+	case err := <-errCh:
+		if err != nil {
+			logger.Error("server stopped with error", "error", err)
+			os.Exit(1)
+		}
+	}
+}