zordon/index.js

straightforward distributed logging tool

var net = require('net')
var fs = require('fs')
var spawn = require('child_process').spawn
var combine = require('stream-combiner')

exports = module.exports

exports.server = function(port, cb) {

  if (!port) return cb(new Error('must define port'))

  var clients = []

  net.createServer(function(con) {
    addCon(con)
    con.on('close', subCon)
    handle(con)
  }).listen(port)

  function addCon(con) {
    clients.push(con.remoteAddress)
    console.log(clients)
  }

  function subCon() {
    clients.splice(clients.indexOf(this.remoteAddress), 1)
    console.log(clients)
  }

  function handle(con) {
    con.pipe(process.stdout)
  }

}

exports.client = function(logfile, url) {

  if (!url || !logfile) throw new Error('must supply file and url')

  var parts = url.split(':')
  var host = parts[0]
  var port = parseInt(parts[1])

  net.connect(port, 'localhost')
    .on('error', function(err) {
      console.log(err.code)
    })
    .on('connect', function() {
      tail(logfile).pipe(this)
    })

}

function tail(logfile) {
  var child = spawn('tail', ['-f', logfile])
  child.stderr.pipe(process.stdout)
  return child.stdout
}