metric logging for performance benchmarking

lib/dao-factory.js

@@ -171,10 +171,12 @@ module.exports = (function() {
     return this.QueryInterface.rawSelect(this.tableName, options, 'min')
   }
 
+  var tk = require('timekit');
   DAOFactory.prototype.build = function(values, options) {
+    var start = tk.time();
     var instance = new DAO(values, Utils._.extend(this.options, this.attributes, { hasPrimaryKeys: this.hasPrimaryKeys }))
       , self     = this
-
+    this.daoFactoryManager.sequelize._metric('Model.build -> new DAO', tk.time() - start);
     options = options || {}
     instance.__factory = this
 

lib/sequelize.js

@@ -88,6 +88,16 @@ module.exports = (function() {
     return this.migrator
   }
 
+  Sequelize.prototype._metric = function(label, time, reset) {
+    if (reset === undefined) reset = false;
+    if (!this._metrics) this._metrics = {};
+    if (!time && this._metrics[label]) return this._metrics[label];
+    if (!time && label) return label+' wasn\'t logged';
+    if (!time && !label) return this._metrics;
+    if (!this._metrics[label] || reset) this._metrics[label] = [];
+    this._metrics[label].push(time);
+  }
+
   Sequelize.prototype.define = function(daoName, attributes, options) {
     options = options || {}
     if(this.options.define) {