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node-loggly-express

v1.0.3

Published

log app parameters to loggly

Downloads

1

Readme

node-loggly-express

send application parameters from express to loggly

Sample code

const logglyExpress = require('node-loggly-express').default;

app.use(logglyExpress({
  token: process.env.logglyToken,
  subdomain: 'example',
  tags: process.env.logglyTags.split(','),
}));

Features

Extra properties

  • response time
  • content length
  • gitHead (git tag and last commit)
  • appVersion (from package.json)
  • useragent parsed

Custom params

req.expressLoggly.params is an object created by this package. Use this object to load custom application parameters that you like to track. This object is passed on loggly as json.params. Loggly indexes individual parameters which makes it easier to track. You can add things like username or location to track in loggly.

Example 1. Track username

app.use('/login', handleLogin);
function handleLogin(req, res) {
  // login
  req.expressLoggly.params.username = req.user.username;
}

Example 2. External API performance

function routeHandler(req, res) {
  let initTime = (new Date()).getTime();
  setTimeout(() => {
    req.expressLoggly.params.asyncTime = (new Date()).getTime() - initTime;
    res.json({message: 'DONE'});
  }, 1000);
}

Ignore useragent

config.ignoreUserAgent

It is better to ignore requests from user agents such as spiders or uptime monitors. This can also be useful to ignore during testing.

Example: Ignore requests from curl and apex ping

let config = {
  ...expressLogglyConfig,
  ignoreUserAgent: /^(apex|curl)/,
}

8 Handy Tips to Consider When Logging in JSON

License

MIT

Loggly is registered trademark of Loggly Inc.