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<?php
/**
* @author stev leibelt <artodeto@bazzline.net>
* @since 2014-07-23
*/
namespace Net\Bazzline\Component\ProcessForkManager;
/**
* Class TaskManager
* @package Net\Bazzline\Component\ProcessForkManager
*/
class TaskManager
{
/**
* @var array|AbstractTask[]
*/
private $abortedTasks;
/**
* @var bool
*/
private $areThereOpenTasksLeft;
/**
* @var array|AbstractTask[]
*/
private $finishedTasks;
/**
* @var array|AbstractTask[]
*/
private $openTasks;
/**
* @var array|AbstractTask[]
*/
private $runningTasks;
public function __construct()
{
$this->abortedTasks = array();
$this->areThereOpenTasksLeft = false;
$this->finishedTasks = array();
$this->openTasks = array();
$this->runningTasks = array();
}
/**
* @return bool
*/
public function areThereOpenTasksLeft()
{
return $this->areThereOpenTasksLeft;
}
/**
* @param AbstractTask $task
* @return $this
*/
public function addOpenTask(AbstractTask $task)
{
$this->openTasks[] = $task;
$this->areThereOpenTasksLeft = true;
return $this;
}
/**
* @return null|AbstractTask
*/
public function getOpenTask()
{
$task = array_shift($this->openTasks);
if (empty($this->openTasks)) {
$this->areThereOpenTasksLeft = false;
}
return $task;
}
/**
* @param AbstractTask $task
* @throws RuntimeException
*/
public function markRunningTaskAsAborted(AbstractTask $task)
{
$key = $this->getValidRunningTaskKey($task);
$this->abortedTasks[$key] = $this->runningTasks[$key];
$this->abortedTasks[$key]->markAsAborted();
unset($this->runningTasks[$key]);
}
/**
* @param AbstractTask $task
* @throws RuntimeException
*/
public function markRunningTaskAsFinished(AbstractTask $task)
{
$key = $this->getValidRunningTaskKey($task);
$this->finishedTasks[$key] = $this->runningTasks[$key];
$this->finishedTasks[$key]->markAsFinished();
unset($this->runningTasks[$key]);
}
/**
* @param AbstractTask $task
* @throws InvalidArgumentException
* @todo implement validation if task is not in open|finished|aborted|running array
*/
public function markOpenTaskAsRunning(AbstractTask $task)
{
$key = $this->getArrayIndexKey($task);
$task->markAsRunning();
$this->runningTasks[$key] = $task;
}
/**
* @param AbstractTask $task
* @return string
* @throws RuntimeException
*/
private function getValidRunningTaskKey(AbstractTask $task)
{
$key = $this->getArrayIndexKey($task);
if (!isset($this->runningTasks[$key])) {
throw new RuntimeException(
'provided task is not running'
);
}
return $key;
}
/**
* @param AbstractTask $task
* @return string
*/
private function getArrayIndexKey(AbstractTask $task)
{
return spl_object_hash($task);
}
}