public function shouldTaskExecute(Engine_Db_Table_Row $task, $refresh = true, $isAutomatic = false)
{
// Refresh to check if run in separate thread
if ($refresh) {
$task->refresh();
}
// Don't run it if it's disabled
if (!$task->enabled || $task->type == 'disabled') {
return false;
}
// Don't start manual tasks in automatic mode when they're dormant
if (in_array($task->type, array('manual', 'semi-automatic')) && $task->state == 'dormant') {
return false;
}
// Don't start executing tasks again unless they have been executing for > 15 minutes
// We assume that 15 min means they have died and failed to cancel executing status
if ($task->executing || $task->state == 'active') {
if (time() > $task->started_last + $this->getTimeout()) {
// Update the task, assuming it has timed out
$newState = $task->type == 'semi-automatic' ? 'sleeping' : 'dormant';
$task->getTable()->update(array('state' => $newState, 'executing' => false, 'executing_id' => 0), array('task_id = ?' => $task->task_id, 'state = ?' => $task->state, 'executing = ?' => $task->executing, 'executing_id = ?' => $task->executing_id));
}
return false;
}
// Tasks is not ready to be executed again yet
if ($task->timeout > 0) {
if (time() < $task->started_last + $task->timeout) {
return false;
}
if (time() < $task->completed_last + $task->timeout) {
return false;
}
}
// Task is dormant
if ($task->state == 'dormant') {
// Automatic task is ready
if ($task->type == 'automatic') {
$task->getTable()->update(array('state' => 'ready'), array('task_id = ?' => $task->task_id, 'state = ?' => $task->state));
}
return false;
}
// Sanity check
if ($task->state != 'ready' && $task->state != 'sleeping') {
$this->getLog()->log('Weird task state: ' . $task->state, Zend_Log::WARN);
return false;
}
// Task is ready
return true;
}
