public function OnStartForking()
{
// start cron, which runs scripts by it's schedule queue
try {
$db = \Scalr::getDb();
// set status to "finished" for active tasks, which ended or executed once
$db->Execute("UPDATE scheduler SET `status` = ? WHERE\n `status` = ? AND (\n CONVERT_TZ(`end_time`,'SYSTEM',`timezone`) < CONVERT_TZ(NOW(),'SYSTEM',`timezone`) OR\n (CONVERT_TZ(`last_start_time`,'SYSTEM',`timezone`) < CONVERT_TZ(NOW(),'SYSTEM',`timezone`) AND `restart_every` = 0)\n )", array(Scalr_SchedulerTask::STATUS_FINISHED, Scalr_SchedulerTask::STATUS_ACTIVE));
// get active tasks: first run (condition and last_start_time is null), others (condition and last_start_time + interval * 0.9 < now())
$taskList = $db->GetAll("SELECT *\n FROM scheduler\n WHERE\n `status` = ? AND\n (`end_time` IS NULL OR CONVERT_TZ(`end_time`,'SYSTEM',`timezone`) > CONVERT_TZ(NOW(),'SYSTEM',`timezone`)) AND\n (`start_time` IS NULL OR CONVERT_TZ(`start_time`,'SYSTEM',`timezone`) <= CONVERT_TZ(NOW(),'SYSTEM',`timezone`)) AND\n (\n `last_start_time` IS NULL OR\n `last_start_time` IS NOT NULL AND `start_time` IS NULL AND (CONVERT_TZ(last_start_time + INTERVAL restart_every MINUTE, 'SYSTEM', `timezone`) < CONVERT_TZ(NOW(),'SYSTEM',`timezone`)) OR\n `last_start_time` IS NOT NULL AND `start_time` IS NOT NULL AND (CONVERT_TZ(last_start_time + INTERVAL (restart_every * 0.9) MINUTE, 'SYSTEM', `timezone`) < CONVERT_TZ(NOW(),'SYSTEM',`timezone`))\n )\n ORDER BY IF (last_start_time, last_start_time, start_time), order_index ASC\n ", array(Scalr_SchedulerTask::STATUS_ACTIVE));
if (!$taskList) {
$this->Logger->info(_("There is no tasks to execute in scheduler table"));
exit;
}
foreach ($taskList as $task) {
// check account status (active or inactive)
try {
if (Scalr_Account::init()->loadById($task['account_id'])->status != Scalr_Account::STATUS_ACTIVE) {
continue;
}
} catch (Exception $e) {
$this->Logger->info("Invalid scheduler task #{$task['id']}: {$e->getMessage()}");
}
if ($task['last_start_time'] && $task['start_time']) {
// try to auto-align time to start time
$startTime = new DateTime($task['start_time']);
$startTime->setTimezone(new DateTimeZone($task['timezone']));
$currentTime = new DateTime('now', new DateTimeZone($task['timezone']));
$offset = $startTime->getOffset() - $currentTime->getOffset();
$num = ($currentTime->getTimestamp() - $startTime->getTimestamp() - $offset) / ($task['restart_every'] * 60);
// num should be less than 0.5
if (floor($num) != round($num, 0, PHP_ROUND_HALF_UP)) {
continue;
}
}
$taskObj = new Scalr_SchedulerTask();
$taskObj->loadById($task['id']);
if ($taskObj->execute()) {
// convert_tz
$taskObj->updateLastStartTime();
$this->Logger->info(sprintf("Task {$taskObj->id} successfully sent"));
}
}
} catch (Exception $e) {
$this->Logger->warn(sprintf("Can't execute task {$task['id']}. Error message: %s", $e->getMessage()));
}
}
