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leanengine-apm

v0.5.0

Published

LeanEngine application performance monitoring

Downloads

14

Readme

LeanEngine APM

这个包将会取代 leanengine-sniper 来为 云引擎 上的 Node.js 应用提供应用级别的性能统计分析。

先安装这个包:

npm install --save leanengine-apm

然后访问 apm.leanapp.cn,通过 LeanCloud 登录,为你的应用获取一个 Token,然后在你的 server.js 中添加(确保添加到加载 leanengine 之前):

var apm = require('leanengine-apm');
apm.init('c4f7ddfebc2d107fa6b7097506ea4c3742e76044'); // 你的 Token

如果遇到问题请到我们的 技术支持论坛 反馈,更新历史见 Releases 页面。

路由统计

然后在 app.js 中添加下面这行代码即可开启路由统计:

app.use(require('leanengine-apm').express());

任务统计

你还可以使用 wrapTask 来统计特定的函数,例如你有一个 sendMail 的函数:

var sendMail = function(template, address) {
  // ...
};

那么你可以用 wrapTask 包装一下这个函数:

var apm = require('leanengine-apm');
var sendMail = apm.wrapTask('sendMail', function(template, address) {
  // ...
});

wrapTask 用于包装返回 Promise 的函数,此外还有一个 wrapCallbackTask 用于包装回调风格的函数。你还可以使用 runTask 来为统计添加更多筛选标签:

var sendMail = function(template, address) {
  return apm.runTask('sendMail', {template: template}, function() {
    // ...
  });
};

建议取值数量有限的字段作为标签才有筛选和分组的意义,请勿使用每次执行值都不同的字段作为标签。