loopback-datasource-juggler/test/helpers/hook-monitor.js

37 lines
1021 B
JavaScript

// Copyright IBM Corp. 2016,2019. All Rights Reserved.
// Node module: loopback-datasource-juggler
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
'use strict';
module.exports = HookMonitor;
function HookMonitor(opts) {
if (!(this instanceof HookMonitor)) {
return new HookMonitor();
}
this.options = opts || {};
this.names = [];
}
HookMonitor.prototype.install = function(ObservedModel, hookNames) {
const monitor = this;
this.names = [];
ObservedModel._notify = ObservedModel.notifyObserversOf;
ObservedModel.notifyObserversOf = function(operation, context, callback) {
if (!Array.isArray(hookNames) || hookNames.indexOf(operation) !== -1) {
const item = monitor.options.includeModelName ?
ObservedModel.modelName + ':' + operation :
operation;
monitor.names.push(item);
}
this._notify.apply(this, arguments);
};
};
HookMonitor.prototype.resetNames = function() {
this.names = [];
};