		'use strict'

		var pino = require('pino')
		var maxInt = 2147483647

		function pinoLogger (opts, stream) {
		if (opts && opts._writableState) {
		stream = opts
		opts = null
		}

		opts = opts \|\| {}
		opts.serializers = opts.serializers \|\| {}
		opts.serializers.req = opts.serializers.req \|\| asReqValue
		opts.serializers.res = opts.serializers.res \|\| pino.stdSerializers.res

		var logger = pino(opts, stream)

		loggingMiddleware.logger = logger

		var nextId = 0

		stream = logger.stream

		return loggingMiddleware

		function onResFinished (err) {
		this.removeListener('finish', onResFinished)
		this.removeListener('error', onResFinished)

		var end = process.hrtime(this.startTime)
		var log = this.log
		var responseTime = Math.round(end[0] * 1e3 + end[1] / 1e6)

		if (err) {
		log.error({
		res: this,
		err: err,
		responseTime: this.responseTime
		}, 'request errored')
		return
		}

		log.info({
		res: this,
		responseTime: responseTime
		}, 'request completed')
		}

		function loggingMiddleware (req, res, next) {
		var startTime = process.hrtime()
		req.id = ++nextId
		nextId = nextId % maxInt

		var child = logger.child({ req: req })

		req.log = child
		res.log = child
		res.startTime = startTime

		res.on('finish', onResFinished)
		res.on('error', onResFinished)

		if (next) {
		next()
		}
		}
		}

		function asReqValue (req) {
		return {
		id: req.id,
		method: req.method,
		url: req.url,
		headers: req.headers,
		remoteAddress: req.connection.remoteAddress,
		remotePort: req.connection.remotePort
		}
		}

		module.exports = pinoLogger
		module.exports = require('pino-http')

package.json

		{
		"name": "express-pino-logger",
		"version": "0.2.3",
		"version": "1.0.0",
		"description": "An express middleware to log with pino",
		@@ -29,3 +29,3 @@ "main": "logger.js",
		"dependencies": {
		"pino": "^2.1.0"
		"pino-http": "^1.0.5"
		},
		@@ -37,2 +37,3 @@ "devDependencies": {
		"morgan": "^1.7.0",
		"pino": "^2.1.6",
		"pre-commit": "^1.1.2",
		@@ -39,0 +40,0 @@ "split2": "^2.0.1",

README.md

		@@ -22,12 +22,13 @@ # express-pino-logger  [![Build Status](https://travis-ci.org/mcollina/express-pino-logger.svg)](https://travis-ci.org/mcollina/express-pino-logger)
		[autocannon](https://github.com/mcollina/autocannon) with 100
		connections and 10 pipelined requests.
		connections and 10 pipelined requests (`autocannon -c 100 -p 10 http://localhost:3000`).

		* `express-bunyan-logger`: 1950 req/sec
		* `express-winston`: 4739 req/sec
		* `morgan`: 5812 req/sec
		* `express-pino-logger`: 6108 req/sec
		* `express-pino-logger` (extreme): 6594 req/sec
		* `express-pino-logger` (without express and extreme): 11988 req/sec
		* `express-bunyan-logger`: 2702 req/sec
		* `express-winston`: 5953 req/sec
		* `morgan`: 8570 req/sec
		* `express-pino-logger`: 9807 req/sec
		* `express-pino-logger` (extreme): 10407 req/sec
		* `express-pino-logger` (without express): 22240.73 req/seq
		* `express-pino-logger` (without express and extreme): 25536 req/sec

		All benchmarks where taken on a Macbook Pro 2014 (i7, 16GB of RAM).
		All benchmarks where taken on a Macbook Pro 2013 (2.6GHZ i7, 16GB of RAM).

		@@ -34,0 +35,0 @@ Whilst we're comparing `express-pino-logger` against [morgan](http://npm.im/morgan), this isn't really a fair contest.

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