/**
* CPU adapter factory return adapter depending on operating system
*
* @return phpRack_Adapters_Cpu_Abstract
* @throws Exception If OS is not supported
* @see For MacOS I think we should use system_profiler shell command.
* After that we can parse it output in similar way like we do it for
* Windows or Linux
* @todo #17 How about Mac OS? There is no /proc directory in Mac OS
*/
public static function factory()
{
/**
* @see phpRack_Adapters_Os
*/
require_once PHPRACK_PATH . '/Adapters/Os.php';
$os = phpRack_Adapters_Os::get();
$classFile = PHPRACK_PATH . '/Adapters/Cpu/' . ucfirst($os) . '.php';
if (!file_exists($classFile)) {
throw new Exception("OS '{$os}' is not supported yet");
}
eval('require_once $classFile;');
// for ZCA validation
$className = 'phpRack_Adapters_Cpu_' . ucfirst($os);
return new $className();
}
/**
* Get env which should be passed to proc_open()
*
* @return array|null
* @see run()
*/
protected function _getEnv()
{
/**
* @see phpRack_Adapters_Os
*/
require_once PHPRACK_PATH . '/Adapters/Os.php';
$os = phpRack_Adapters_Os::get();
// we must modify env only on Linux, so we should return default env in other cases
if ($os != phpRack_Adapters_Os::LINUX || !isset($_ENV)) {
return null;
}
// we must remove PATH to avoid script forking problem on some servers
return array_diff_key($_ENV, array('PATH' => ''));
}
