tracing fixes

catalogue/server.js

@@ -4,11 +4,6 @@ const mongoObjectID = require('mongodb').ObjectID;
 const bodyParser = require('body-parser');
 const express = require('express');
 
-// MongoDB
-var db;
-var collection;
-var mongoConnected = false;
-
 // init tracing
 instana({
     tracing: {
@@ -16,6 +11,10 @@ instana({
     }
 });
 
+// MongoDB
+var db;
+var collection;
+var mongoConnected = false;
 
 const app = express();