完善设置

hydro/service/bus.js

@@ -1,7 +1,8 @@
 const { EventEmitter } = require('events');
 
 const bus = new EventEmitter();
-module.exports = {
+
+global.Hydro.service.bus = module.exports = {
     subscribe(events, handler) {
         for (const event of events) bus.on(event, handler);
     },

hydro/service/gridfs.js

@@ -2,4 +2,5 @@ const { GridFSBucket } = require('mongodb');
 const db = require('./db');
 
 if (!db.s) db.s = {};
-module.exports = new GridFSBucket(db);
+
+global.Hydro.service.gridfs = module.exports = new GridFSBucket(db);