A basic one line format

[TommyDew42]

closes fastify/fastify#4027

How does the log look like

YYYY-MM-dd HH:mm:ss.SSSTZ - <level> - <method> <route path> - <message>

The logs look like this:

Unit tests

The following unit tests are included:

• fastify log
  • log of server being started
  • log of incoming request and response
  • user custom log
• main function messageFormat
  • a basic logDescriptor without the req object
  • a basic logDescriptor with the req object

---

I believe without doing anything, we have already allowed the following usage:

fastify({
  logger: {
    transport: 'one-line-logger'
  }
})

It's because pino uses require.resolve('one-line-logger') to look for the path to main file of this package.

Checklist

• run npm run test
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[mcollina]

Good work! I've left some notes.

One question: should we add some color to each line?

[mcollina]

Suggested change

	transport: "one-line-logger",
	transport: "@fastify/one-line-logger",

[mcollina]

Suggested change

	const pretty = require('pino-pretty')
	'use strict'
	const pretty = require('pino-pretty')

[mcollina]

Suggested change

	const { serverFactory, EPOCH, TIME } = require('./helpers')
	'use strict'
	const { serverFactory, EPOCH, TIME } = require('./helpers')

[mcollina]

Suggested change

	const { EPOCH, TIME, MESSAGE_KEY } = require('./helpers')
	'use strict'
	const { EPOCH, TIME, MESSAGE_KEY } = require('./helpers')

[Eomm]

I think the timezone could be useful here

[TommyDew42]

What about changing it to this then?

Z YYYY-MM-dd HH:mm:ss.SSS - <level> - <method> <route path> - <message>

It will be like this

GMT+0800 2017-02-14 20:51:48.000 - info - request completed

[Eomm]

Sorry, I mean the timezone offset:

2017-02-14 20:51:48.000+08:00 - info - request completed

This format should be compliant to the ISO 8601
https://www.w3.org/TR/NOTE-datetime

[TommyDew42]

I noticed colorizerFactory is exported in the pino-pretty js file but not in the ts definition file.

Do we not want to expose the messageFormatFactory, Request & LogDescriptor too? But only export target.

[mcollina]

I noticed colorizerFactory is exported in the pino-pretty js file but not in the ts definition file.

PR to pino-pretty?

[TommyDew42]

Also updated the PR description for the timezone and color!

[Eomm]

last two comment, then LGTM

Nice work!

[mcollina]

lgtm

[TommyDew42]

@mcollina ops sorry pushed a commit about readme. 😓 can you help run check again?