[node.js] IIS Log 월별로 압축하기

C:\inetpub\logs\LogFiles\W3SVC4

u_ex151103.log
u_ex151104.log
.
.

var fs = require('fs')
var glob = require('glob')
var path = require('path')
var archiver = require('archiver')

var settingraw = fs.readFileSync(__dirname + '/setting.json', 'utf8')
var setting = JSON.parse(settingraw)

var src_dir = setting.src_dir
var dst_dir = setting.dst_dir

var now = new Date()
// YYYYMMDD today
var today = [now.getFullYear(), now.getMonth() + 1, now.getDate()]
today = today
  .map(function (item) {
    return item < 10 ? '0' + item : '' + item
  })
  .join('')

function get_start_date(callback) {
  glob(path.join(src_dir, '*.log'), function (er, files) {
    var name = path.basename(files[0], '.log')
    callback(name.substring(name.length - 6), name.substring(0, name.length - 6))
  })
}

function start_app() {
  get_start_date(function (date, prefix) {
    console.log('today = ' + today)

    if (date.length != 6) {
      console.log('error')
      return
    }
    if (!date.match(/[0-9]+/)) {
      console.log('error')
      return
    }
    var month = date.substring(0, 4)

    if (month == today.substring(2, 6)) {
      console.log(month + ' = today')
      console.log('no more')
      return
    }

    console.log('>>' + month)
    console.log('>>' + prefix)

    // zip 압축
    console.log('zipping..')

    var output = fs.createWriteStream(prefix + month + '.zip')
    var archive = archiver('zip')

    output.on('close', function () {
      console.log(archive.pointer() + ' total bytes')
      console.log('archiver has been finalized and the output file descriptor has closed.')

      // zip 파일 복사
      fs.rename(prefix + month + '.zip', path.join(dst_dir, prefix + month + '.zip'))

      // 로그삭제
      console.log('log delete..')

      glob(path.join(src_dir, prefix + month + '*.log'), function (er, files) {
        files.forEach(function (file, index) {
          fs.unlink(file, function (err) {
            console.log(file + ' deleted')
          })
        })
      })

      // 재시작
      setTimeout(function () {
        console.log('3 second wait...')
        start_app()
      }, 3000)
    })

    archive.on('error', function (err) {
      throw err
    })

    archive.pipe(output)
    archive.bulk([{ expand: true, cwd: src_dir, src: [prefix + month + '*.*'] }])
    archive.finalize()
  })
}

start_app()

{
  "src_dir": "C:\\inetpub\\logs\\LogFiles\\W3SVC2",
  "dst_dir": "D:\\IIS_LOG\\W3SVC2"
}