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200 lines
5.1 KiB
200 lines
5.1 KiB
/** |
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* Hero管理、调度 |
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* --使用流程-- |
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* 1. 本地启动machete_hero爬虫,它会主动连接本联盟,并加入到爬虫队列等待处理任务(爬虫会定时上报自己的状态给联盟); |
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* 2. 联盟收到新任务时,存入待处理队列,等待在线的爬虫来获取; |
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* 3. 爬虫获取到新任务处理完成后,将结果回传给联盟; |
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* 4. 联盟收到爬虫处理结果触发回调通知并将数据结果发送给任务提交者; |
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* 5. 任务提交者可自行根据任务编号来联盟查询任务结果; |
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* |
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* --并发处理规则-- |
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* 同一个任务可以被分配给多个爬虫 |
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* 同一个任务可以接收不同爬虫回传的数据,并完成回调 |
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* |
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* --数据缓存规则-- |
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* 任务结果数据最大不超过1M,超过的当任务处理失败处理 |
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* 任务数据保存最长 1 天 |
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*/ |
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import fs from 'node:fs'; |
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import { readdir, readFile } from 'node:fs/promises'; |
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import path from 'node:path'; |
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import cron from 'node-cron'; |
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class HeroUnion { |
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//构造函数,设置默认配置 |
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constructor() { |
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this.stats = {}; |
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this.tasks = []; |
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this.taskStatus = { |
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'total': 0, |
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'waiting': 0, |
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'running': 0, |
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'done': 0, |
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'failed': 0 |
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}; |
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this.statusCode = { |
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'waiting': '待处理', |
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'running': '处理中', |
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'done': '完成', |
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'failed': '失败' |
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}; |
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this.supportedPlatforms = { |
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'douyin': true, |
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'kuaishou': true, |
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'xigua': true, |
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'bilibili': true |
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}; |
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} |
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//公用方法 |
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getTimestamp() { |
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return Math.floor(Date.now()); |
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} |
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getTimestampInSeconds() { |
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return Math.floor(Date.now() / 1000); |
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} |
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//--任务相关功能-- |
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//根据任务提交者ID和时间戳生成任务ID编号 |
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generateTaskId(uuid) { |
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let timestamp = this.getTimestamp(); |
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return `${uuid}_${timestamp}`; |
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} |
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isSupportedPlatform(platform) { |
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return typeof(this.supportedPlatforms[platform]) != 'undefined' && this.supportedPlatforms[platform]; |
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} |
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//提交新任务 |
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/** |
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* { |
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* id: '', |
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* status: '', |
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* uuid: '', |
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* country: '', |
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* lang: '', |
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* url: '', |
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* platform: '', |
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* data_mode: '', |
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* notify_url: '', |
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* } |
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**/ |
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createTask(uuid, url, platform, data_mode, notify_url, country, lang) { |
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let task = { |
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id: this.generateTaskId(uuid), |
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status: 'waiting', |
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//必选 |
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uuid: uuid, |
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url: url, |
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platform: platform, |
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//可选 |
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data_mode: 'default', |
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country: 'china', |
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lang: 'zh-CN', |
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notify_url: '' |
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}; |
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if (typeof(data_mode) != 'undefined' && data_mode) { |
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task.data_mode = data_mode; |
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} |
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if (typeof(notify_url) != 'undefined' && notify_url) { |
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task.notify_url = notify_url; |
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} |
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if (typeof(country) != 'undefined' && country) { |
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task.country = country; |
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} |
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if (typeof(lang) != 'undefined' && lang) { |
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task.lang = lang; |
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} |
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this.tasks.push(task); |
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this.taskStatus.total ++; |
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this.taskStatus.waiting ++; |
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return task; |
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} |
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//参数均可选,获取 1 个待处理的任务 |
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getWaitingTask(platform, country, lang, data_mode) { |
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let searchResult = null; |
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for (const task of this.tasks) { |
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if (task.status == 'waiting') { |
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if (typeof(platform) != 'undefined' && platform) { |
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if (platform == task.platform) { |
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searchResult = task; |
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}else { |
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continue; |
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} |
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} |
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if (typeof(country) != 'undefined' && country) { |
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if (country == task.country) { |
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searchResult = task; |
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}else { |
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continue; |
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} |
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} |
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if (typeof(lang) != 'undefined' && lang) { |
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if (lang == task.lang) { |
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searchResult = task; |
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}else { |
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continue; |
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} |
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} |
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if (typeof(data_mode) != 'undefined' && data_mode) { |
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if (data_mode == task.data_mode) { |
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searchResult = task; |
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}else { |
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continue; |
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} |
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} |
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} |
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} |
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return searchResult; |
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} |
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//保存任务处理结果 |
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async saveTaskById() { |
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} |
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//查询某个任务的状态及其数据 |
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getTaskById() { |
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} |
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//任务完成触发回调通知 |
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async handleTaskDone() { |
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//当任务完成回传回来的时候调用此方法触发回调通知 |
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} |
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//--爬虫相关功能-- |
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//接收爬虫状态上报 |
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heroOnboard() { |
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} |
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//获取联盟状态 |
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stats() { |
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return this.stats; |
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} |
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} |
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export default HeroUnion;
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