QOS-Handler(window param ver)
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.org/scripts/430297/1128326/QOS-Handler.js
// ==UserScript==
// @name QOS-Handler
// @namespace http://greasyfork.org/
// @version 0.2
// @description QOS-Handler(window param ver)
// @author Cosil.C
// @grant unsafeWindow
// @license GPL
// ==/UserScript==
/* jshint esversion: 6 */
/**
* @description 流控相关
*/
unsafeWindow.qos = {
/**
* @description 记录这次的访问时间戳，并返回是否超出限制
* @param sec 时间限制
* @param timesLimit 次数限制
* @returns sec秒内访问了超过timesLimit次 ? true : false
*/
record: (sec, timesLimit) => {
sec = sec || 5;
timesLimit = timesLimit || 10;
console.log(`start qos recording...\nsec:${sec},timesLimit:${timesLimit}`);
let timestamp = new Date().getTime(), historyArr = document.defaultView.qos.getRecord();
historyArr.push(timestamp);
if (historyArr.length > timesLimit) {
let shift;
do {
shift = parseInt(historyArr.shift());
} while (historyArr.length > timesLimit);
//
if (timestamp - shift <= sec * 1000) {
let format = function (target) {
return new Date(target).toTimeString().substr(0, 8);
};
console.log(`current:${format(timestamp)}, shift:${format(shift)}, interval(sec):${(timestamp - shift) / 1000}`);
return true;
}
}
localStorage.setItem('historyArr', JSON.stringify(historyArr));
console.log('qos recorded');
return false;
},
/**
* @description 清除缓存中的记录
*/
clearRecord: () => {
localStorage.removeItem('historyArr');
},
/**
* @description 获取记录的历史
* @returns 历史记录数组
*/
getRecord: () => {
let historyArr;
try {
historyArr = JSON.parse(localStorage.getItem('historyArr') || '[]');
} catch (e) {
console.error(e);
console.error(`cause:${localStorage.getItem('historyArr')}`);
document.defaultView.qos.clearRecord();
historyArr = [];
}
return historyArr;
}
};