refresh cache for upyun by nodejs

upyun-cache-refresh.js

/**
 * Created by liuxing on 16/6/23.
 */
var request = require('request');
var crypto = require('crypto');
var UPYUN_CACHE = 'http://purge.upyun.com/purge/';

function md5sum(data) {
  var md5 = crypto.createHash('md5');
  md5.update(data, 'utf8');
  return md5.digest('hex');
}

function makeSign(url, date, bucket, operator, password){
//  var uri = url.join('\n');
  var sign = url + '&' + bucket + '&' + date + '&' + md5sum(password);
  console.log(sign);
  return 'UpYun ' + bucket + ':' +operator + ':' + md5sum(sign);
}

function refresh(url, bucket, operator, password) {
  var urls = url.join('\n');
  var date = new Date().toGMTString();

  var sign = makeSign(urls, date, bucket, operator, password)
  console.log('heads sign: ', sign);
  console.log('url;', urls);
  var query = {
    url: UPYUN_CACHE,
    headers: {
      'Authorization': sign,
      'Date': date,
      'EXPECT': ''
    },
    form: {
      purge: urls
    }
  }

  request.post(query, function (err, res, body) {
    console.log(body);
  });
}

var _operator = 'wanclient';
var _password = 'xx';
var _bucket = 'wan-image';
var URL = ['http://huiyuan-wantest.bigertech.com/index?text=aaaa'];

refresh(URL, _bucket, _operator, _password);