处理library使用问题

 'use strict';
 
 const mRoot = '../models';
-const library = '../../../library';
 
 const couponModel = require(`${mRoot}/coupon`); // 领取优惠券 model
-const log = require(`${library}/logger`);
 
 exports.index = (req, res, next) => {
     var renderData = {

-var API = require('../../../library/api').API;
-var api = new API();
+var api = global.yoho.API;
 
 /**
  * 分享页面基础参数

@@ -8,8 +8,8 @@
 const request = require('request-promise');
 const Promise = require('bluebird');
 const crypto = require('crypto');
-const logger = require('../../../library/logger');
-const cache = require('../../../library/cache');
+const logger = global.yoho.logger;
+const cache = global.yoho.cache;
 
 // 此处请勿使用有货公众号的 appId, 此处使用的是 女生志 的appId
 const appId = 'wxb52ec6a352f0b090';

@@ -3,7 +3,7 @@
  * @return {[type]}
  */
 const headerModel = require('../models/header');
-const logger = require('../../library/logger');
+const logger = global.yoho.logger;
 
 exports.notFound = () => {
     return (req, res) => {