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/**
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* Express router of api/
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*/
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import express from 'express';
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import common from './common.mjs';
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import HeroUnion from './heroUnion.mjs';
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//初始化爬虫联盟
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const heroUnion = new HeroUnion();
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heroUnion.init();
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const router = express.Router();
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//获取联盟公开接口列表
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router.get('/', async (req, res) => {
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const apiList = {
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"/api/": "查看所有API",
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"/api/stats/": "查看联盟状态",
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"/api/heros/": "获取联盟中的爬虫数据",
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"/api/newtask/": "向联盟提交新的爬虫任务",
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"/api/querytask/": "根据任务ID查询任务数据",
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"/api/onboard/": "爬虫状态上报到联盟",
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"/api/gettask/": "爬虫从联盟获取待处理任务",
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"/api/savetask/": "爬虫完成任务后保存结果到联盟",
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};
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const data = {
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name: heroUnion.config.name,
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version: heroUnion.config.version,
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apis: apiList
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};
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return res.status(200).json(data);
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});
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/**
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* 联盟成员向联盟提交数据抓取任务
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*
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* 参数:
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* uuid: 用户ID
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* url: 目标网址
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* platform: 目标网址所属平台,可选值:[douyin, kuaishou, xigua, bilibili]
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* contract: 需要抓取的数据合约,凡是支持此合约的爬虫将根据合约内容抓取数据(具体参考爬虫所支持的合约)
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* data_mode: 返回数据格式,可选值:[json, html]
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* country: 国家代码
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* lang: 语言代码
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* notify_url: 通知回调网址
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* sign: 参数签名,签名方法见README.md“接口参数签名方法”
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**/
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router.post('/newtask/', async (req, res) => {
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let uuid = req.body.uuid,
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url = req.body.url,
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platform = req.body.platform,
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contract = req.body.contract,
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data_mode = req.body.data_mode,
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country = req.body.country,
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lang = req.body.lang,
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notify_url = req.body.notify_url,
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sign = req.body.sign;
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let data = {code: 0, message: ''};
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//参数格式检查
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if (!uuid || !url || !platform || !contract || !sign) {
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data.message = '必选参数uuid、url、platform、contract、sign不能为空';
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}else if (common.isUuidOk(uuid) == false) {
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data.message = '参数uuid应为6-32位的英文字符串,请联系管理员获得';
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}else if (common.isUrlOk(url) == false) {
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data.message = '参数url必须是一个网址';
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}else if (common.isNormalName(platform, 5) == false) {
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data.message = '平台名platform应为5-32位的英文字符串';
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}else if (common.isNormalName(contract, 5) == false) {
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data.message = '合约contract应为5-32位的英文字符串';
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}else if (data_mode && data_mode != 'json' && data_mode != 'html') {
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data.message = '数据格式data_mode可选值:json, html';
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}else if (country && common.isIosCountryCode(country) == false) {
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data.message = '国家代码country请传小写的两位字母,参考两位ISO CODES:https://countrycode.org/';
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}else if (lang && common.isIosLangCode(lang) == false) {
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data.message = '语言代码lang请传小写的两位字母,参考ISO 639-1 Code:https://www.loc.gov/standards/iso639-2/php/code_list.php';
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}else if (notify_url && common.isUrlOk(notify_url) == false) {
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data.message = '参数notify_url必须是一个网址';
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}else if (common.isNormalName(sign, 32, 32) == false) {
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data.message = '签名sign应为32位的英文字符串';
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}
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//签名检查
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let userToken = await heroUnion.getUserToken(uuid);
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if (!userToken) {
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data.message = `用户 ${uuid} 不存在,请检查参数uuid并确认大小写完整正确`;
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}else {
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let paramsCheck = {};
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for (const key in req.body) {
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if (key != 'sign') {
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paramsCheck[key] = req.body[key];
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}
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}
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let mySign = common.sign(paramsCheck, userToken);
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if (mySign.toLowerCase() != sign.toLowerCase()) {
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data.message = `签名 ${sign} 不匹配,请确保token正确及签名方法跟文档一致`;
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}
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}
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if (!data.message) {
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data.task = heroUnion.createTask(uuid, url, platform, contract, data_mode, notify_url, country, lang);
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data.code = 1;
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data.message = '新爬虫任务提交完成';
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}
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return res.status(200).json(data);
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});
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/**
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* 联盟成员向联盟查询某个任务的数据
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*
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* 参数:
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* uuid: 用户ID
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* task_id: 任务ID
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* sign: 参数签名,签名方法见README.md“接口参数签名方法”
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**/
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router.get('/querytask/', async (req, res) => {
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let uuid = req.query.uuid,
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task_id = req.query.task_id,
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sign = req.query.sign;
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let data = {code: 0, message: ''};
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//参数检查
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if (!uuid || !task_id || !sign) {
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data.message = '必选参数uuid、task_id、sign不能为空';
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}else if (common.isUuidOk(uuid) == false) {
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data.message = '参数uuid应为6-32位的英文字符串,请联系管理员获得';
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}else if (common.isTaskIdOk(task_id) == false) {
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data.message = '任务编号task_id格式错误,请使用接口/api/newtask/返回数据里的任务id属性值';
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}else if (common.isNormalName(sign, 32, 32) == false) {
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data.message = '签名sign应为32位的英文字符串';
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}
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//签名检查
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let userToken = await heroUnion.getUserToken(uuid);
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if (!userToken) {
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data.message = `用户 ${uuid} 不存在,请检查参数uuid并确认大小写完整正确`;
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}else {
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let paramsCheck = {
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uuid: uuid,
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task_id: task_id
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};
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let mySign = common.sign(paramsCheck, userToken);
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if (mySign.toLowerCase() != sign.toLowerCase()) {
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data.message = `签名 ${sign} 不匹配,请确保token正确及签名方法跟文档一致`;
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}
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}
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if (!data.message) {
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data.task = heroUnion.getTaskById(task_id);
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if (data.task) {
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data.code = 1;
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data.message = '获取任务数据完成';
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}else {
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data.message = `找不到编号为${task_id}相关的任务数据`;
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}
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}
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return res.status(200).json(data);
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});
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/**
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* hero爬虫从联盟获取等待中的数据抓取任务
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*
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* 参数:
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* platforms: 爬虫支持的平台
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* contracts: 爬虫支持的合约
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* country: 爬虫所在国家
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* lang: 爬虫支持的语言
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* data_mode: 爬虫支持的返回数据格式
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**/
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router.get('/gettask/', async (req, res) => {
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let platforms = req.query.platforms,
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contracts = req.query.contracts,
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country = req.query.country ? req.query.country : 'cn',
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lang = req.query.lang ? req.query.lang : 'zh',
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data_mode = req.query.data_mode ? req.query.data_mode : 'json';
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let data = {code: 0, message: ''};
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//参数检查
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if (!platforms || !contracts) {
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data.message = '必选参数platforms、contracts不能为空';
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}else if (common.isPlatformsOk(platforms) == false) {
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data.message = '支持的平台platforms应为英文逗号间隔的3 - 100个英文字符串';
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}else if (common.isContractsOk(contracts) == false) {
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data.message = '支持的合约contracts应为英文逗号间隔的3 - 100个英文字符串';
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}else if (country && common.isIosCountryCode(country) == false) {
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data.message = '国家代码country请传小写的两位字母,参考两位ISO CODES:https://countrycode.org/';
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}else if (lang && common.isIosLangCode(lang) == false) {
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data.message = '语言代码lang请传小写的两位字母,参考ISO 639-1 Code:https://www.loc.gov/standards/iso639-2/php/code_list.php';
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}else if (data_mode && data_mode != 'json' && data_mode != 'html') {
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data.message = '数据格式data_mode可选值:json, html';
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}
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//获取等待中的任务
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if (!data.message) {
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data.task = heroUnion.getWaitingTask(platforms, contracts, country, lang, data_mode);
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if (data.task) {
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data.code = 1;
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data.message = '获取待处理任务完成';
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}else {
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data.message = '暂时没有跟你支持的平台、合约匹配的待处理任务';
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}
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}
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return res.status(200).json(data);
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});
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/**
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* hero爬虫向联盟提交某个任务的抓取结果
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*
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* 参数:
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* name: 爬虫名字
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* task_id: 任务ID
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* task_result: 抓取结果数据
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* sign: 参数签名
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**/
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router.post('/savetask/', async (req, res) => {
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let name = req.body.name,
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task_id = req.body.task_id,
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task_result = req.body.task_result,
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sign = req.body.sign;
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let data = {code: 0, message: ''};
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//参数检查
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if (!name || !task_id || !task_result || !sign) {
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data.message = '必选参数不能为空';
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}else if (common.isBotNameOk(name) == false) {
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data.message = '爬虫名字必须是6 - 32位英文字母、下划线的组合';
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}else if (common.isTaskIdOk(task_id) == false) {
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data.message = '任务编号task_id格式错误,请使用接口/api/gettask/返回数据里的任务id属性值';
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}
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//检查爬虫是否存在及其状态
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if (!data.message) {
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let heroBot = heroUnion.getHeroByName(name);
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if (!heroBot || heroBot.status == 'offline') {
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data.message = `爬虫${name}不存在或已下线`;
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}
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}
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//签名检查,如果通过则保存任务数据
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if (!data.message) {
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let task = heroUnion.getTaskById(task_id);
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if (task) {
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let paramsCheck = {
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name: name,
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task_id: task_id,
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task_result: task_result
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};
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let mySign = common.sign(paramsCheck, task.token);
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if (mySign.toLowerCase() != sign.toLowerCase()) {
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data.message = `签名 ${sign} 不匹配,请确保token正确及签名方法跟文档一致`;
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}else {
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let saved = heroUnion.saveTaskById(name, task_id, task_result);
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if (saved) {
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data.code = 1;
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data.message = '保存任务数据完成';
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}else {
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data.message = `任务${task_id}已经完成,请勿重复提交数据`;
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}
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}
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}else {
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data.message = `任务${task_id}不存在`;
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}
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}
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return res.status(200).json(data);
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});
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/**
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* 爬虫向联盟上报自己的状态,以保持在线
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*
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* 参数列表
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* name
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* description
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* status: [idle, busy]
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* platforms: '', //支持的平台,可由爬虫定义
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* contracts: '', //支持的数据抓取合约,具体内容由爬虫定义
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* timestamp
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* country
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* lang
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* contact //爬虫提供方的联系方式
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*/
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router.post('/onboard/', async (req, res) => {
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let bot_name = req.body.name,
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bot_desc = req.body.description,
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status = req.body.status,
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platforms = req.body.platforms, //多个则用英文逗号间隔
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contracts = req.body.contracts, //多个则用英文逗号间隔
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timestamp = req.body.timestamp,
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country = req.body.country,
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lang = req.body.lang,
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contact = req.body.contact;
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let data = {
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"code": 0,
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"message": ""
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};
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//参数格式检查
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if (!bot_name || !bot_desc || !status || !timestamp || !platforms || !contracts) {
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data.message = '必填参数name、description、status、platforms、contracts、timestamp不能为空';
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}else if (common.isBotNameOk(bot_name) == false) {
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data.message = '爬虫名字必须是6 - 32位英文字母、下划线的组合';
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}else if (typeof(bot_desc) != 'string' || bot_desc.length > 100) {
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data.message = '爬虫简介必须是100个字符以内的字符串';
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}else if (common.isBotStatus(status) == false) {
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data.message = '爬虫状态status传参错误,其可选值:idle、busy';
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}else if (common.isTimestampInSeconds(timestamp) == false) {
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data.message = '时间戳timestamp请传秒数';
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}else if (common.isPlatformsOk(platforms) == false) {
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data.message = '支持的平台platforms应为英文逗号间隔的3 - 100个英文字符串';
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}else if (common.isContractsOk(contracts) == false) {
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data.message = '支持的合约contracts应为英文逗号间隔的3 - 100个英文字符串';
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}else if (country && common.isIosCountryCode(country) == false) {
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data.message = '国家代码country请传小写的两位字母,参考两位ISO CODES:https://countrycode.org/';
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}else if (lang && common.isIosLangCode(lang) == false) {
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data.message = '语言代码lang请传小写的两位字母,参考ISO 639-1 Code:https://www.loc.gov/standards/iso639-2/php/code_list.php';
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}else if (contact && common.isContactOk(contact) == false) {
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data.message = '联系方式contact应为6 - 50个字符';
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}
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if (!data.message) {
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let bot = {
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name: bot_name.toLowerCase(),
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description: bot_desc,
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status: status,
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timestamp: timestamp,
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platforms: platforms.split(','),
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contracts: contracts.split(','),
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contact: contact,
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//如果没传则填充默认值
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country: country ? country.toLowerCase() : 'cn',
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lang: lang ? lang.toLowerCase() : 'zh'
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};
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heroUnion.heroOnboard(bot);
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data.code = 1;
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data.message = '欢迎上船,因为有你,联盟将更健壮!';
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}
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return res.status(200).json(data);
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});
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//获取联盟的hero爬虫列表
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router.get('/heros/', async (req, res) => {
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let page = req.query.page,
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limit = req.query.limit;
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if (!page || typeof(page) != 'number') {
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page = 1;
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}
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if (!limit || typeof(limit) != 'number') {
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limit = 20;
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}
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return res.status(200).json(heroUnion.getHeros(page, limit));
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});
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//获取联盟状态
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router.get('/stats/', async (req, res) => {
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return res.status(200).json(heroUnion.getStats());
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});
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export default router;
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