rotador.js

var exec = require('child_process').exec;

var hash = {
  'A': {els: [1,2], result: 0},
  'B': {els: [1,2,3,4,5], result: 0},
  'C': {els: [1,2,3,4,5], result: 0},
  'D': {els: [1,4,5], result: 0},
}

var COMANDOS = [
  {
    'name': 'imapsync',
    'command': "a=$(( ( RANDOM % 5 ) + 1)); sleep $a; echo \"imapsync-$a-"
  },
  {
    'name': 'moveBlobs',
    'command': "a=$(( ( RANDOM % 5 ) + 1)); sleep $a; echo \"moveBlobs-$a-"
  },
  {
    'name': 'backup',
    'command': "a=$(( ( RANDOM % 5 ) + 1)); sleep $a; echo \"backup-$a-"
  }
]

var runCommand = function(server, mailboxIndex, commandIndex) {
  command = COMANDOS[commandIndex];
  if (!command) {
    mailboxIndex++;
    return runCommand(server, mailboxIndex, 0);
  }
  if (!hash[server].els[mailboxIndex]) {
    console.log('NADA + para ' + server + '. Envio Email');
    return true;
  }
  var line = server + '-' + mailboxIndex + "\"";
  var comandoFull = command.command + line;
  exec(comandoFull, (e, stdout, stderr) => {
    printLog(stdout);
    commandIndex++;
    runCommand(server, mailboxIndex, commandIndex);
    printLine();
  })
}

var printLog = function(stdout) {
  var comandos = {'imapsync': 0, 'moveBlobs': 1, 'backup': 2}
  var time = Math.floor(Date.now() / 1000);
  var command = stdout.trim().split('-')[0];
  var sleep = stdout.trim().split('-')[1];
  var server = stdout.trim().split('-')[2];
  var mailboxIndex = stdout.trim().split('-')[3];
  var commandIndex = comandos[command];
  hash[server].result++;
  var log = `${command}-${server}-${mailboxIndex}-${time}`;
  console.log(log);
}

var letras = ['A', 'B', 'C', 'D'];
letras.forEach((l) => {
  runCommand(l, 0)
})

var printLine = function() {
  var total = 0;
  Object.keys(hash).forEach((k) => {
    total += hash[k].result
  });
  if (total === 0) return true;
  if ((total % 4 === 0)) console.log('-----------');
}