parse.js

parse.js

/*
** SIEGE 3.0.8
** Preparing 100 concurrent users for battle.
The server is now under siege...
Lifting the server siege...      done.

Transactions:           9700 hits
Availability:         100.00 %
Elapsed time:          19.19 secs
Data transferred:         0.16 MB
Response time:            0.20 secs
Transaction rate:       505.47 trans/sec
Throughput:           0.01 MB/sec
Concurrency:           99.47
Successful transactions:        9700
Failed transactions:             0
Longest transaction:          0.27
Shortest transaction:         0.10

FILE: /var/log/siege.log
You can disable this annoying message by editing
the .siegerc file in your home directory; change
the directive 'show-logfile' to false.
*/

'use strict'

const Bluebird = require('bluebird')
const readFile = Bluebird.promisify(require('fs').readFile)

const getIndexOf = (file, pattern) => file.indexOf(pattern)
const firthPatternDelemiter = 'done.'
const lastPatterDelemiter = 'FILE:'
const firthPatternToReplace = /done./g

const removeFisthParth = file =>
  file
    .substring(getIndexOf(file, firthPatternDelemiter))
    .replace(firthPatternToReplace, '')

const indexOfLastPart = file => getIndexOf(file, lastPatterDelemiter)

const replaceLastPart =  file =>
    file.substring(0, indexOfLastPart(file) != -1 ? indexOfLastPart(file) : file.length);

const trimAll = str => str.trim()

const mapToObject = file => file.split('\n').reduce((acc, line) => {
  const splitedLine = line.split(':');
  const key = splitedLine[0];
  const value = splitedLine[1].replace(/[a-zA-Z\/% ]/g, '');
  acc[`${key}`] = `${value}`;
  return acc;
}, {});


readFile('./log.log', 'utf8')
  .then(removeFisthParth)
  .then(replaceLastPart)
  .then(trimAll)
  .then(mapToObject)
  .then(console.log)

// result
/*
  { Transactions: '9700',
  Availability: '100.00',
  'Elapsed time': '19.19',
  'Data transferred': '0.16',
  'Response time': '0.20',
  'Transaction rate': '505.47',
  Throughput: '0.01',
  Concurrency: '99.47',
  'Successful transactions': '9700',
  'Failed transactions': '0',
  'Longest transaction': '0.27',
  'Shortest transaction': '0.10' }
*/