koa2-newrelic

Forked from koa-newrelic.

Update middleware to work with koa2 and koa-router@7.x

koa-router@7.x change _matchedRoute function to ctx.url.

npm install koa2-newrelic

---

Koa middleware to allow Newrelic monitor Koa applications like Express. Supported features:

• Name transactions according to router (Only support koa-router)
• Group and name transactions for static resources according to file extensions
• Traces for Koa middlewares

Installation

npm install koa-newrelic

API

var newrelic = require('newrelic');
var koaNewrelic = require('koa-newrelic')(newrelic, opts);
 
var app = require('koa')();
var router = require('koa-router')();
 
router.get('/', function *(next) {...});
 
app
  .use(koaNewrelic);
  .use(router.routes());

To record traces of middlewares, please initialize koa-newrelic before adding any middlewares to app or router

Options

• middlewareTrace Boolean for if need traces for each middleware. Defaults to false
• groupStaticResources Boolean for if need to group transactions by file extension. Defaults to false
• staticExtensions Array of file extensions will be grouped if groupStaticResources is true. Defaults to ['svg','png','jpg','gif','css','js','html']
• customTransactionName Function to customize transaction metrics name by method and route path. Defaults to (method, path) => 'Koajs/' + (path[0] === '/' ? path.slice(1) : path) + '#' + method

Examples

var koaNewrelic = require('koa-newrelic')(newrelic, {
  middlewareTrace: true,
  groupStaticResources: true,
  staticExtensions: ['js', 'css'],
  customTransactionName: (method, path) => `Koajs/${path.slice(1)}#${method}`
});
 
router.get('/index', function* ctrA(next) {...});
router.post('/login', function* ctrB(next) {...});
 
app.use(koaNewrelic)
  .use(serve('/public'));
  .use(router.routes());
 
/*
  In Newrelic, you will find following transactions
 
    /index#GET
      Middleware serve
      Middleware dispatch
      Middleware ctrA
 
    /login#POST
      Middleware serve
      Middleware dispatch
      Middleware ctrB
 
    /*.js#GET
      Middleware serve
 
    /*.css#GET
      Middleware serve
*/

Test

npm test

Known Issues

License

Copyright (c) 2016 AfterShip

Licensed under the MIT license.