ironworker cacel task

function _cancelQueuedTasks(configs, tasks, callback){
  var worker = new ironworker.Client({token: config.IRON_WORKER_TOKEN, project_id: config.IRON_WORKER_PROJECT_ID});
  newerTasks = tasks.slice(2, tasks.length);
  log(newerTasks.length + " newerTasks are going to be deleted")
  async.eachSeries(newerTasks, function(task, cb){
    log("Canceling task: " + task.id + " [RMCaseJobScheduler]")
    worker.tasksCancel(task.id,function(error, results){
      log("=======Results======")
      log(JSON.stringify(results))
      log("======Errors========")
      log(JSON.stringify(error))
      if(error){
        cb(error);
      }
      else{
        log("Task " + task.id + "was " + results.msg)
        cb()
      }
      
    });
  }, function(error){
    callback(error);
  })
  callback()
}

function _getQueuedIronWorkerTasks(configs, callback){
  log("Getting Queued Tasks.....");
  if (!configs || !configs.max_queue_length) {
    callback(new Error('Invalid Configuration'));
  }
  else {
    maxQueueLength = configs.max_queue_length;
    var worker = new ironworker.Client({token: config.IRON_WORKER_TOKEN, project_id: config.IRON_WORKER_PROJECT_ID});
    worker.tasksList({queued: 1, code_name: "RMCaseJobScheduler"},function(error, tasks){
      log(tasks.length + " tasks were returned.")
      if (!error) {
        if(tasks instanceof Array && tasks.length > maxQueueLength){
          //The oldest task will be the first elements of the array
          tasks.sort(function(t1,t2){
            d1 = new Date(t1.created_at);
            d2 = new Date(t2.created_at);
            return d2 - d1;
          });
        }
      }
      callback(error, tasks);
    });
  }
}