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;
}
protected function _executeTask(Engine_Db_Table_Row $task)
{
// Log
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Task Execution Check [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
}
// Task execution semaphore
$affected = $this->update(array('started_last' => time(), 'started_count' => new Zend_Db_Expr('started_count + 1'), 'semaphore' => new Zend_Db_Expr('semaphore + 1')), array('task_id = ?' => $task->task_id, 'semaphore < ?' => new Zend_Db_Expr('processes')));
if (1 !== $affected) {
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Task Execution Failed Semaphore [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
}
return false;
}
// Update process identifier
$affected = $this->getAdapter()->update('engine4_core_processes', array('name' => $task->plugin), array('pid = ?' => $this->_pid));
if (1 !== $affected) {
// Wth?
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Execution Failed Process Update [%d] : %s', $this->_pid, $task->plugin), Zend_Log::DEBUG);
}
}
// Debug: sleeppre
$slept = 0;
if ($this->getParam('sleeppre', 0) > 0) {
$slept += $this->getParam('sleeppre');
sleep($this->getParam('sleeppre'));
}
// Refresh
$task->refresh();
// Log
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Task Execution Pass [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
}
// ----- MAIN -----
// Set executing task
$this->_executingTask = $task;
// Invoke plugin
$status = false;
$isComplete = true;
$wasIdle = false;
try {
// Get plugin object
$plugin = $this->getTaskPlugin($task);
// Execute
$plugin->execute();
// Check was idle
$wasIdle = $plugin->wasIdle();
// Ok
$status = true;
} catch (Exception $e) {
// Log exception
$this->getLog()->log($e->__toString(), Zend_Log::ERR);
$status = false;
}
// ----- MAIN -----
// Debug: sleeppost
if ($this->getParam('sleeppost', 0) > 0) {
$slept += $this->getParam('sleeppost');
sleep($this->getParam('sleeppost'));
}
if (!isset($this->slept)) {
$this->slept = 0;
}
$this->slept += $slept;
// Update process identifier
$affected = $this->getAdapter()->update('engine4_core_processes', array('name' => ''), array('pid = ?' => $this->_pid));
if (1 !== $affected) {
// Wth?
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Execution Failed Process Update (post) [%d] : %s', $this->_pid, $task->plugin), Zend_Log::DEBUG);
}
}
// Update task and release semaphore
$statusKey = $status ? 'success' : 'failure';
$affected = $this->update(array('semaphore' => new Zend_Db_Expr('semaphore - 1'), 'completed_last' => time(), 'completed_count' => new Zend_Db_Expr('completed_count + 1'), $statusKey . '_last' => time(), $statusKey . '_count' => new Zend_Db_Expr($statusKey . '_count + 1')), array('task_id = ?' => $task->task_id, 'semaphore > ?' => 0));
if (1 !== $affected) {
if (APPLICATION_ENV == 'development') {
$this->getLog()->log(sprintf('Task Execution Failed Semaphore Release [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
}
return false;
}
// Update count
if (!$wasIdle) {
$this->_runCount++;
}
// Remove executing task
$this->_executingTask = null;
// Log
if (APPLICATION_ENV == 'development') {
if ($status) {
$this->getLog()->log(sprintf('Task Execution Complete [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
} else {
$this->getLog()->log(sprintf('Task Execution Complete with errors [%d] : %s', $this->_pid, $task->title), Zend_Log::DEBUG);
}
}
return $this;
}
