private room but socketio not ready

backend/service-privateroom/mongodb-message.js

@@ -0,0 +1,37 @@
+const config = require('./config');
+const mongoose = require( 'mongoose' );
+const url = config.mongodbHost+config.mongodbDatabase;
+
+mongoose.connect(url,({useNewUrlParser: true, useUnifiedTopology: true})).then( function(){
+    console.log('mongodb-message connected '+mongoose.connection.readyState);
+}).catch(function(err){
+    console.log('error : '+err);
+});
+
+const schemaMessage = mongoose.Schema({
+    username:{
+        type: String,
+        required: true
+    },
+    date:{
+        type: Date,
+        required: true
+    },
+    channel:{
+        type: String,
+        required: true
+    },
+    message:{
+        type: String,
+        required: true
+    }
+},{ versionKey: false });
+
+const messages = mongoose.model(config.mongodbMessages, schemaMessage);
+
+// messages.find({},(err, messages) => {
+//     if(err) throw  err;
+//     console.log(messages);
+// });
+
+module.exports = messages;