Hooks on Sequelize()

hooks9

hooks10

lib/hooks.js

@@ -55,7 +55,9 @@ var hookTypes = {
   beforeFindAfterOptions: {params: 1},
   afterFind: {params: 2},
   beforeDefine: {params: 2, sync: true},
-  afterDefine: {params: 1, sync: true}
+  afterDefine: {params: 1, sync: true},
+  beforeInstantiate: {params: 2, sync: true},
+  afterInstantiate: {params: 1, sync: true}
 };
 var hookAliases = {
   beforeDelete: 'beforeDestroy',
@@ -362,3 +364,21 @@ Hooks.beforeDefine = function(name, fn) {
 Hooks.afterDefine = function(name, fn) {
   return Hooks.addHook.call(this, 'afterDefine', name, fn);
 };
+
+/**
+ * A hook that is run before Sequelize() call
+ * @param {String}   name
+ * @param {Function} fn   A callback function that is called with config, options, callback(err)
+ */
+Hooks.beforeInstantiate = function(name, fn) {
+  return Hooks.addHook.call(this, 'beforeInstantiate', name, fn);
+};
+
+/**
+ * A hook that is run after Sequelize() call
+ * @param {String}   name
+ * @param {Function} fn   A callback function that is called with sequelize, callback(err)
+ */
+Hooks.afterInstantiate = function(name, fn) {
+  return Hooks.addHook.call(this, 'afterInstantiate', name, fn);
+};

lib/sequelize.js

@@ -122,6 +122,12 @@ module.exports = (function() {
       }
     }
 
+    var config = {database: database, username: username, password: password};
+    Sequelize.runHooks('beforeInstantiate', config, options);
+    database = config.database;
+    username = config.username;
+    password = config.password;
+
     this.options = Utils._.extend({
       dialect: 'mysql',
       dialectModulePath: null,
@@ -189,6 +195,8 @@ module.exports = (function() {
     this.connectionManager = this.dialect.connectionManager;
 
     this.importCache = {};
+
+    Sequelize.runHooks('afterInstantiate', this);
   };
 
   Sequelize.options = {hooks: {}};