zone-koa

Each request as a zone session patch to Koa.

Installation

• Nodejs v7.6.0 above
• zone.js v0.8.5 above
• koa v2.4.1 above
• (optional) coffeescript v2.0

install npm package:

npm install zone.js koa zone-koa coffeescript

Usage

require('zone.js/dist/zone-node.js')
require('zone.js/dist/long-stack-trace-zone')
require('zone-koa')

Koa = require('koa')

app       = new Koa()
expect    = chai.expect

app.use (ctx, next)->
  req = ctx.req
  vSessionName = req.socket.remoteFamily + '|' + req.socket.remoteAddress + '|'+ req.socket.remotePort
  expect(Zone.current.name).to.be.equal vSessionName
  vSession = Zone.current.get 'session'
  expect(vSession).to.be.equal ctx
  start = new Date()
  await next()
  ms = new Date() - start
  console.log("#{ctx.method} #{ctx.url} - #{ms}ms")

app.use (ctx)->
  ctx.body = ctx.request.url

History

refs

• issue using async/await with target ES2017. with target ES2016 works good.
• async_hooks API on above Node@8.2.1
  • cls-hooked Continuation-Local Storage ( Hooked )
  • node-async-context(based on typescript) a continuation local storage / asynchronous execution context for node.js via async_hooks