pino-pretty/bin.js

#!/usr/bin/env node

const fs = require('fs')
const args = require('args')
const pump = require('pump')
const split = require('split2')
const { Transform } = require('readable-stream')
const prettyFactory = require('./')
const CONSTANTS = require('./lib/constants')

args
  .option(['c', 'colorize'], 'Force adding color sequences to the output')
  .option(['f', 'crlf'], 'Append CRLF instead of LF to formatted lines')
  .option(['e', 'errorProps'], 'Comma separated list of properties on error objects to show (`*` for all properties)', '')
  .option(['l', 'levelFirst'], 'Display the log level as the first output field')
  .option(['k', 'errorLikeObjectKeys'], 'Define which keys contain error objects (`-k err,error`)', 'err,error')
  .option(['m', 'messageKey'], 'Highlight the message under the specified key', CONSTANTS.MESSAGE_KEY)
  .option(['a', 'timestampKey'], 'Display the timestamp from the specified key', CONSTANTS.TIMESTAMP_KEY)
  .option(['t', 'translateTime'], 'Display epoch timestamps as UTC ISO format or according to an optional format string (default ISO 8601)')
  .option(['s', 'search'], 'Specify a search pattern according to jmespath')
  .option(['i', 'ignore'], 'Ignore one or several keys: (`-i time,hostname`)')

args
  .example('cat log | pino-pretty', 'To prettify logs, simply pipe a log file through')
  .example('cat log | pino-pretty -m fooMessage', 'To highlight a string at a key other than \'msg\', use')
  .example('cat log | pino-pretty -a fooTimestamp', 'To display timestamp from a key other than \'time\', use')
  .example('cat log | pino-pretty -t', 'To convert Epoch timestamps to ISO timestamps use the -t option')
  .example('cat log | pino-pretty -t "SYS:yyyy-mm-dd HH:MM:ss"', 'To convert Epoch timestamps to local timezone format use the -t option with "SYS:" prefixed format string')
  .example('cat log | pino-pretty -l', 'To flip level and time/date in standard output use the -l option')
  .example('cat log | pino-pretty -s "msg == \'hello world\'"', 'Only prints messages with msg equals to \'hello world\'')
  .example('cat log | pino-pretty -i pid,hostname', 'Prettify logs but don\'t print pid and hostname')

const opts = args.parse(process.argv)
const pretty = prettyFactory(opts)
const prettyTransport = new Transform({
  objectMode: true,
  transform (chunk, enc, cb) {
    const line = pretty(chunk.toString())
    if (line === undefined) return cb()
    cb(null, line)
  }
})

pump(process.stdin, split(), prettyTransport, process.stdout)

// https://github.com/pinojs/pino/pull/358
if (!process.stdin.isTTY && !fs.fstatSync(process.stdin.fd).isFile()) {
  process.once('SIGINT', function noOp () {})
}