Add morgan logging for db_server

db_server/app.js

@@ -1,4 +1,5 @@
 var express = require('express');
+var logger = require('morgan');
 const cors = require('cors');
 
 var app = express();
@@ -8,6 +9,7 @@ var mq = require('./mq/rmq');
 var statRouter = require('./routes/stats');
 
 app.use(express.json());
+app.use(logger('dev'));
 
 // set CORS options
 const corsOptions = {