Add realtime gateway and simulator bridge

realtime-gateway/internal/gateway/auth.go

@@ -0,0 +1,24 @@
+package gateway
+
+import (
+	"slices"
+
+	"realtime-gateway/internal/config"
+	"realtime-gateway/internal/model"
+)
+
+func authorize(cfg config.AuthConfig, role model.Role, token string) bool {
+	switch role {
+	case model.RoleProducer:
+		return slices.Contains(cfg.ProducerTokens, token)
+	case model.RoleController:
+		return slices.Contains(cfg.ControllerTokens, token)
+	case model.RoleConsumer:
+		if cfg.AllowAnonymousConsumers && token == "" {
+			return true
+		}
+		return slices.Contains(cfg.ConsumerTokens, token)
+	default:
+		return false
+	}
+}