fix: throw error if subscriber cannot get info (#19)

Author: goFrendiAsgard

lib/service_sub_rabbit.js

@@ -59,7 +59,16 @@ class ServiceSubRabbit extends ServiceSub {
             this._subscriptions[i] = {};
 
             let info = yield this.getServiceInfo(i);
-            let rabbitAvailable = info ? Object.keys(info.modules).some(key => key == "pub-rabbit") : false;
+            let rabbitAvailable = false;
+            try {
+                rabbitAvailable = info ? Object.keys(info.modules).some(key => key == "pub-rabbit") : false;
+            } catch (err) {
+                this.logger.warn("Cannot load info.modules:", error);
+            }
+            // We don't want to use fallback, throw error instead
+            if (!rabbitAvailable) {
+                throw new Error("Rabbitmq is not available, error subscribing");
+            }
 
             for (let event in desc[i]) {
                 let channel = yield this._connection.createChannel();