{"id":31889,"date":"2023-03-18T10:02:06","date_gmt":"2023-08-14T09:49:03","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8bull%e7%ae%a1%e7%90%86%e7%9a%84nodejs%e5%88%86%e6%95%a3%e4%bd%9c%e4%b8%9a\/"},"modified":"2024-04-29T19:26:20","modified_gmt":"2024-04-29T11:26:20","slug":"%e4%bd%bf%e7%94%a8bull%e7%ae%a1%e7%90%86%e7%9a%84nodejs%e5%88%86%e6%95%a3%e4%bd%9c%e4%b8%9a","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8bull%e7%ae%a1%e7%90%86%e7%9a%84nodejs%e5%88%86%e6%95%a3%e4%bd%9c%e4%b8%9a\/","title":{"rendered":"\u4f7f\u7528Bull\u7ba1\u7406\u7684NodeJS\u5206\u6563\u4f5c\u4e1a"},"content":{"rendered":"<h1>bull \u4e00\u8bcd<\/h1>\n<p>\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u5904\u7406\u5206\u5e03\u5f0f\u4f5c\u4e1a\u548c\u6d88\u606f\u7684\u961f\u5217\u5305\uff0c\u53ef\u4ee5\u5728NodeJS\u4e0a\u8fd0\u884c\uff0c\u57fa\u4e8eredis\u3002\u8fd9\u662fkue\u7684\u7ee7\u4efb\u8005\u5e93\u3002<\/p>\n<h1>\u786e\u8ba4\u73af\u5883<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">node: v10.17.0<\/ul>\n<\/li>\n<\/ul>\n<p>redis ( for windows ): 3.0.504<\/p>\n<h1>\u4f7f\u7528express-generator\u521b\u5efa\u9879\u76ee\u3002<\/h1>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u5728\u4e00\u4e2a\u540d\u4e3aplay_node_bull\u7684\u9879\u76ee\u4e2d\u521b\u5efa\u3002<\/p>\n<pre class=\"post-pre\"><code>npx express-generator play_node_bull\r\ncd play_code_bull\r\nnpm install\r\n<\/code><\/pre>\n<h1>\u5b89\u88c5Bull<\/h1>\n<pre class=\"post-pre\"><code>npm install bull\r\n<\/code><\/pre>\n<h1>\u4fee\u6539app.js<\/h1>\n<p>\u5c06\u4ee5\u4e0b\u884c\u6dfb\u52a0\u81f3app.js\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">var createError = require('http-errors');\r\nvar express = require('express');\r\nvar path = require('path');\r\nvar cookieParser = require('cookie-parser');\r\nvar logger = require('morgan');\r\n<\/span>\r\nvar indexRouter = require('.\/routes\/index');\r\n<span class=\"p\">var usersRouter = require('.\/routes\/users');\r\n<\/span><span class=\"gi\">+ var jobsRouter = require('.\/routes\/jobs');  \r\n<\/span>\r\nvar app = express();\r\n\r\n\/\/ view engine setup\r\n<span class=\"p\">app.set('views', path.join(__dirname, 'views'));\r\napp.set('view engine', 'jade');\r\n<\/span>\r\napp.use(logger('dev'));\r\n<span class=\"p\">app.use(express.json());\r\napp.use(express.urlencoded({ extended: false }));\r\napp.use(cookieParser());\r\napp.use(express.static(path.join(__dirname, 'public')));\r\n<\/span>\r\napp.use('\/', indexRouter);\r\n<span class=\"p\">app.use('\/users', usersRouter);\r\n<\/span><span class=\"gi\">+ app.use('\/jobs', jobsRouter); \r\n<\/span>\r\n\/\/ catch 404 and forward to error handler\r\n<span class=\"p\">app.use(function(req, res, next) {\r\n<\/span>  next(createError(404));\r\n<span class=\"err\">});<\/span>\r\n\r\n<span class=\"err\">\/\/<\/span> error handler\r\n<span class=\"p\">app.use(function(err, req, res, next) {\r\n<\/span>  \/\/ set locals, only providing error in development\r\n  res.locals.message = err.message;\r\n  res.locals.error = req.app.get('env') === 'development' ? err : {};\r\n\r\n  \/\/ render the error page\r\n  res.status(err.status || 500);\r\n  res.render('error');\r\n<span class=\"err\">});<\/span>\r\n\r\n<span class=\"p\">module.exports = app;\r\n<\/span><\/code><\/pre>\n<h1>\u589e\u52a0jobs.js<\/h1>\n<h3>\u7b2c\u4e00\u5757\u533a\u57df<\/h3>\n<p>\u5728routes\u6587\u4ef6\u5939\u4e2d\u6dfb\u52a0jobs.js\u3002<br \/>\n\u51c6\u5907\u8def\u7531\u5668\u548cBull\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">express<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">router<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">express<\/span><span class=\"p\">.<\/span><span class=\"nx\">Router<\/span><span class=\"p\">();<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Bull<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">bull<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h3>\u7b2c\u4e8c\u4e2a\u8857\u533a<\/h3>\n<p>\u6211\u4f1a\u51c6\u5907\u4e00\u4e2a\u91cd\u8d1f\u5904\u7406\u7684\u6869\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u91cd\u3044\u51e6\u7406\u306e\u30b9\u30bf\u30d6<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">heavyJob<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nb\">Promise<\/span><span class=\"p\">((<\/span><span class=\"nx\">resolve<\/span><span class=\"p\">)<\/span><span class=\"o\">=&gt;<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"nx\">setInterval<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">();<\/span>\r\n     <span class=\"p\">},<\/span> <span class=\"mi\">10000<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">})<\/span>  \r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u7b2c\u4e09\u4e2a\u8857\u533a<\/h3>\n<p>\u5b9a\u4e49bull\u5bf9\u8c61\u548c\u5904\u7406\u540d\u3002<br \/>\n\u5904\u7406\u540d\u662f\u5c06\u53d1\u9001\u548c\u63a5\u6536\u961f\u5217\u7ed1\u5b9a\u8d77\u6765\u7684\u5173\u952e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">queue<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">Bull<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">bulltest<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span> <span class=\"na\">redis<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">port<\/span><span class=\"p\">:<\/span> <span class=\"mi\">6379<\/span><span class=\"p\">,<\/span> <span class=\"na\">host<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">127.0.0.1<\/span><span class=\"dl\">'<\/span> <span class=\"p\">}<\/span> <span class=\"p\">});<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">processor<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">processor_name<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u51e6\u7406\u540d<\/span>\r\n<\/code><\/pre>\n<h3>\u7b2c\u56db\u4e2a\u533a\u5757<\/h3>\n<p>\u5728\u4ee3\u7801\u4e2d\u5b9a\u4e49\u8981\u5165\u961f\u7684\u7ec8\u70b9\u3002<br \/>\n\u8981\u5c06\u6570\u636e\u5bf9\u8c61\u52a0\u5165\u961f\u5217\uff0c\u5219\u4f7f\u7528queue.add()\u51fd\u6570\u5e76\u6307\u5b9a\u5904\u7406\u540d\u79f0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">router<\/span><span class=\"p\">.<\/span><span class=\"nx\">post<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">\/<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">(<\/span><span class=\"nx\">req<\/span><span class=\"p\">,<\/span> <span class=\"nx\">res<\/span><span class=\"p\">,<\/span> <span class=\"nx\">next<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">data<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span> <span class=\"na\">greetingTime<\/span><span class=\"p\">:<\/span> <span class=\"p\">(<\/span><span class=\"k\">new<\/span> <span class=\"nb\">Date<\/span><span class=\"p\">()).<\/span><span class=\"nx\">toString<\/span><span class=\"p\">()<\/span> <span class=\"p\">}<\/span>     <span class=\"c1\">\/\/ job\u306e\u30c7\u30fc\u30bf(object)<\/span>\r\n  <span class=\"nx\">queue<\/span><span class=\"p\">.<\/span><span class=\"nx\">add<\/span><span class=\"p\">(<\/span><span class=\"nx\">processor<\/span><span class=\"p\">,<\/span> <span class=\"nx\">data<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"nx\">res<\/span><span class=\"p\">.<\/span><span class=\"nx\">send<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">ok<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">});<\/span>\r\n\r\n<span class=\"nx\">module<\/span><span class=\"p\">.<\/span><span class=\"nx\">exports<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">router<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u7b2c\u4e94\u4e2a\u8857\u533a<\/h3>\n<p>\u5728\u8fd9\u91cc\u7f16\u5199\u5904\u7406\u7a0b\u5e8f\u3002<br \/>\n\u60a8\u53ef\u4ee5\u4f7f\u7528queue.process()\u6765\u6307\u5b9a\u5904\u7406\u540d\u79f0\u3001\u5e76\u53d1\u5904\u7406\u6570\u548c\u5904\u7406\u7a0b\u5e8f\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">concurrency<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>  <span class=\"c1\">\/\/ \u4e26\u884c\u51e6\u7406\u6570<\/span>\r\n\r\n<span class=\"nx\">queue<\/span><span class=\"p\">.<\/span><span class=\"nx\">process<\/span><span class=\"p\">(<\/span><span class=\"nx\">processor<\/span><span class=\"p\">,<\/span> <span class=\"nx\">concurrency<\/span><span class=\"p\">,<\/span> <span class=\"k\">async<\/span> <span class=\"p\">(<\/span><span class=\"nx\">job<\/span><span class=\"p\">,<\/span> <span class=\"nx\">done<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">try<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">await<\/span> <span class=\"nx\">heavyJob<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"nx\">done<\/span><span class=\"p\">();<\/span>\r\n  <span class=\"p\">}<\/span> <span class=\"k\">catch<\/span> <span class=\"p\">(<\/span><span class=\"nx\">e<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">done<\/span><span class=\"p\">(<\/span><span class=\"nx\">e<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<h1>\u6267\u884c<\/h1>\n<p>\u6267\u884c\u5e94\u7528\u7a0b\u5e8f\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5c06\u57283000\u53f7\u7aef\u53e3\u4e0a\u7b49\u5f85\u3002<\/p>\n<pre class=\"post-pre\"><code>npm start\r\n<\/code><\/pre>\n<h1>\u8c03\u7528API<\/h1>\n<p>\u7528curl\u547d\u4ee4\u8c03\u7528\u521b\u5efa\u7684jobsAPI\u3002<\/p>\n<pre class=\"post-pre\"><code>curl -X POST 'http:\/\/127.0.0.1:3000\/jobs'\r\n<\/code><\/pre>\n<h1>\u5de5\u4f5c\u7684\u9009\u9879 de<\/h1>\n<pre class=\"post-pre\"><code><span class=\"kr\">interface<\/span> <span class=\"nx\">JobOpts<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">priority<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u512a\u5148\u5ea6\u30021\uff08\u6700\u9ad8\u306e\u512a\u5148\u5ea6\uff09\uff5eMAX_INT\uff08\u6700\u4f4e\u306e\u512a\u5148\u5ea6\uff09\u3092\u6307\u5b9a\u3059\u308b\u3002\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u308f\u305a\u304b\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u305f\u3081\u3001\u5fc5\u8981\u3067\u306a\u3044\u9650\u308a\u4f7f\u7528\u3057\u306a\u3044\u3002<\/span>\r\n  <span class=\"nx\">delay<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u3053\u306e\u30b8\u30e7\u30d6\u3092\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u5f85\u6a5f\u3059\u308b\u30df\u30ea\u79d2\u6570\u3002\u6b63\u78ba\u306b\u9045\u5ef6\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u6642\u523b\u3092\u540c\u671f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/span>\r\n  <span class=\"nx\">attempts<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/\u3000\u30b8\u30e7\u30d6\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u306e\u30ea\u30c8\u30e9\u30a4\u56de\u6570<\/span>\r\n  <span class=\"nx\">repeat<\/span><span class=\"p\">:<\/span> <span class=\"nx\">RepeatOpts<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ cron\u4ed5\u69d8\u306b\u5f93\u3063\u3066\u30b8\u30e7\u30d6\u3092\u7e70\u308a\u8fd4\u3059\u3002<\/span>\r\n  <span class=\"nx\">backoff<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span> <span class=\"o\">|<\/span> <span class=\"nx\">BackoffOpts<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u30b8\u30e7\u30d6\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306e\u81ea\u52d5\u518d\u8a66\u884c\u8a2d\u5b9a\u3002\u9045\u5ef6\u6642\u9593\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u3001{type: 'fixed' or 'exponential')\u3092\u6307\u5b9a\u3002<\/span>\r\n  <span class=\"nx\">lifo<\/span><span class=\"p\">:<\/span> <span class=\"nx\">boolean<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u5f8c\u5165\u308c\u5148\u51fa\u3057\u306b\u3059\u308b (default false)<\/span>\r\n  <span class=\"nx\">timeout<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u30a8\u30e9\u30fc\u3067\u30b8\u30e7\u30d6\u304c\u5931\u6557\u3059\u308b\u307e\u3067\u306e\u30df\u30ea\u79d2\u6570<\/span>\r\n  <span class=\"nx\">jobId<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span> <span class=\"o\">|<\/span> <span class=\"nx\">string<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u30b8\u30e7\u30d6ID\u3092\u4e0a\u66f8\u304d\u3059\u308b\u3002\u65e2\u306b\u5b58\u5728\u3059\u308bID\u3092\u6301\u3064\u30b8\u30e7\u30d6\u3092\u8ffd\u52a0\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u8ffd\u52a0\u3055\u308c\u306a\u3044\u3002<\/span>\r\n  <span class=\"nx\">removeOnComplete<\/span><span class=\"p\">:<\/span> <span class=\"nx\">boolean<\/span> <span class=\"o\">|<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ true\u306e\u5834\u5408\u3001\u6b63\u5e38\u306b\u5b8c\u4e86\u3057\u305f\u3068\u304d\u306b\u30b8\u30e7\u30d6\u3092\u524a\u9664\u3057\u307e\u3059\u3002false\u306e\u5834\u5408\u306f`completed`\u30bb\u30c3\u30c8\u306b\u4fdd\u6301\u3055\u308c\u308b\u3002<\/span>\r\n  <span class=\"nx\">removeOnFail<\/span><span class=\"p\">:<\/span> <span class=\"nx\">boolean<\/span> <span class=\"o\">|<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ true\u306e\u5834\u5408\u3001\u51e6\u7406\u306b\u5931\u6557\u3057\u305f\u3068\u304d\u306b\u30b8\u30e7\u30d6\u3092\u524a\u9664\u3057\u307e\u3059\u3002false\u306e\u5834\u5408\u306f`faild`\u30bb\u30c3\u30c8\u306b\u4fdd\u6301\u3055\u308c\u308b\u3002<\/span>\r\n  <span class=\"nx\">stackTraceLimit<\/span><span class=\"p\">:<\/span> <span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ \u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u306b\u8a18\u9332\u3055\u308c\u308b\u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u884c\u306e\u91cf\u3092\u5236\u9650\u3002<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>bull \u4e00\u8bcd \u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u5904\u7406\u5206\u5e03\u5f0f\u4f5c\u4e1a\u548c\u6d88\u606f\u7684\u961f\u5217\u5305\uff0c\u53ef\u4ee5\u5728NodeJS\u4e0a\u8fd0\u884c\uff0c\u57fa\u4e8eredis\u3002\u8fd9\u662fkue 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