peppino

preset of pino

Purpose

Ready-to-use rich tool for dev and debug while relay on pino great performace in production.

Key features:

• namespaces and filter logs by namespaces

Installing

npm i peppino

Quick start

singleton

const log = require('peppino')
log.init({ pretty: true })

log.info({ message: 'order received', payload: { order: { id: '1123abc', items: ['pizza','beer','rum'] } } })
log.error({ message: 'oh no!', error: new Error('SOMETHING_WRONG') })

output

multiple instances

const log = require('peppino')
const _logger1 = log.init({ singleton: false, pretty: true, level: 'info' })
const _logger2 = log.init({ singleton: false, level: 'silent' })

_logger1.info({ message: 'info' })
_logger2.info({ message: 'none' })

output

Settings

Default settings:

{
  level: 'warn',
  pretty: false,
  version: '',
  name: '',
  namespaces: {
    filter: null
  },
  singleton: true,
  original: null
}

• level set logger level
• pretty pretty output
• version append version on each log entry
• name append instance name (usually service name) on each log entry
• namespaces use namespaces and apply filter on pretty
• singleton use the singleton or create a new indipendent instance with different settings
• formatters customize formatters, see [#formatters](formatter section).
• original append original pino options

Methods

.init

init logger with settings, everything is optional

.set

update settings for the singleton or existing instance

.printing

says if level is enabled or not

const log = require('peppino')
log.init({ level: 'warn' })
log.printing('info')
// > false

log.printing('error')
// > true

.timer

utility for measure time

const log = require('peppino')
log.init()

log.timer('db-query')
// db.query ...
log.info({ message: 'query execution', time: log.timer('db-query') })

{"level":"INFO","time":1591218836285,"message":"query execution","timer":"123 ms"}

NOTE: max timer duration in 10 minutes, if timer is not called the second time with the same tag, it is automatically cleaned after 10 mins.

.pino

you may need the pino original instance with current settings, i.e. to pass to fastify

const log = require('peppino')
log.init()

const pino = log.pino()

---

Namespaces

Use namespaces and apply filter; filter can be: string or string[] or RegExp.
Only for pretty print

const log = require('peppino')
log.init({
  pretty: true,
  level: 'info',
  name: 'auth-service',
  namespaces: { filter: ['db'] }
})

// will be printed
log.success({ ns: 'db', message: 'connected' })

// will be skipped
log.error({
  ns: 'socket',
  message: 'connection timeout',
  socket: { address: '192.168.100.123', port: 9909 }
})

---

Levels

panic, success and fail are added to the original levels.

Full ordered set is:

• panic
• fatal
• error
• warn
• success
• fail
• info
• debug
• trace

or

silent

---

Formatters

Specify how to format entries adding the formatter to keys

log.error({
  ns: 'socket',
  message: 'connection timeout',
  timestamp: Date.now(),
  'now:epoch': Date.now()
})

output

Available formatters are:

• epoch: format epoch time to ISO
• filesize: format bytes to human readable

Formatters can be customized or extended as follow

log.init({
  formatters: {
    // override default "epoch" formatter
    epoch: value => new Date(value).toLocaleString(),
    // add formatter for file name to print only the filename
    filename: value => path.basename(value)
  }
})

---

TODO

• [ ] test coverage
  • [ ] formatters
  • [ ] printing
• [ ] full trace by stack-trace
• [ ] custom serializers

---

License

The MIT License (MIT)

Copyright (c) 2020 Simone Sanfratello

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.