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<?php |
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/* |
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* Copyright © MIKO LLC - All Rights Reserved |
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* Unauthorized copying of this file, via any medium is strictly prohibited |
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* Proprietary and confidential |
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* Written by Alexey Portnov, 9 2020 |
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*/ |
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namespace MikoPBX\Core\Workers; |
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use MikoPBX\Core\Asterisk\AsteriskManager; |
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use MikoPBX\Core\System\BeanstalkClient; |
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use MikoPBX\Core\System\Util; |
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use MikoPBX\Core\System\Processes; |
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use Phalcon\Di; |
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use Phalcon\Text; |
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abstract class WorkerBase extends Di\Injectable implements WorkerInterface |
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{ |
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public int $currentProcId = 1; |
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protected AsteriskManager $am; |
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protected int $maxProc = 1; |
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protected bool $needRestart = false; |
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/** |
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* Workers shared constructor |
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*/ |
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public function __construct() |
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{ |
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pcntl_async_signals(true); |
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pcntl_signal( |
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SIGUSR1, |
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[$this, 'signalHandler'] |
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); |
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$this->checkCountProcesses(); |
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$this->savePidFile(); |
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} |
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/** |
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* Calculates how many processes have started already and kill excess or old processes |
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*/ |
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private function checkCountProcesses(): void |
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{ |
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$activeAnotherProcesses = Processes::getPidOfProcess(static::class, getmypid()); |
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$processes = explode(' ', $activeAnotherProcesses); |
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if (empty($processes[0])) { |
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array_shift($processes); |
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} |
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$countProc = count($processes) + 1; |
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$killApp = Util::which('kill'); |
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if ($this->maxProc === 1 && $countProc > 1) { |
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// Kill old processes with timeout, maybe it is soft restart and worker die without any help |
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Processes::mwExec("{$killApp} SIGUSR1 {$activeAnotherProcesses}"); |
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} elseif ($this->maxProc > $countProc) { |
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// Start additional processes |
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while ($countProc < $this->maxProc) { |
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sleep(3); |
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Processes::processPHPWorker(static::class, 'start', 'multiStart'); |
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$countProc++; |
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} |
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} elseif ($this->maxProc < $countProc) { |
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// Получим количество лишних процессов. |
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$countProc4Kill = $countProc - $this->maxProc; |
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// Завершим лишние |
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while ($countProc4Kill >= 0) { |
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if ( ! isset($processes[$countProc4Kill])) { |
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break; |
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} |
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// Kill old processes with timeout, maybe it is soft restart and worker die without any help |
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Processes::mwExec("{$killApp} SIGUSR1 {$processes[$countProc4Kill]}"); |
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$countProc4Kill--; |
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} |
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} |
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} |
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/** |
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* Saves pid to pidfile |
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*/ |
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private function savePidFile(): void |
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{ |
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$activeProcesses = Processes::getPidOfProcess(static::class); |
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$processes = explode(' ', $activeProcesses); |
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if (count($processes) === 1) { |
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file_put_contents($this->getPidFile(), $activeProcesses); |
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} else { |
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$pidFilesDir = dirname($this->getPidFile()); |
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$pidFile = $pidFilesDir . '/' . pathinfo($this->getPidFile(), PATHINFO_BASENAME); |
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// Delete old PID files |
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$rm = Util::which('rm'); |
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Processes::mwExec("{$rm} -rf {$pidFile}*"); |
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$i = 1; |
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foreach ($processes as $process) { |
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file_put_contents("{$pidFile}-{$i}.pid", $process); |
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$i++; |
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} |
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} |
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} |
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/** |
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* Create PID file for worker |
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*/ |
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public function getPidFile(): string |
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{ |
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$name = str_replace("\\", '-', static::class); |
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return "/var/run/{$name}.pid"; |
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} |
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/** |
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* Process async system signal |
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* |
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*/ |
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public function signalHandler(): void |
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{ |
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$this->needRestart = true; |
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} |
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/** |
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* Ping callback for keep alive check |
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* |
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* @param BeanstalkClient $message |
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*/ |
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public function pingCallBack(BeanstalkClient $message): void |
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{ |
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$message->reply(json_encode($message->getBody() . ':pong')); |
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} |
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/** |
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* If it was Ping request to check worker, we answer Pong and return True |
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* |
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* @param $parameters |
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* |
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* @return bool |
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*/ |
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public function replyOnPingRequest($parameters): bool |
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{ |
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$pingTube = $this->makePingTubeName(static::class); |
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if ($pingTube === $parameters['UserEvent']) { |
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$this->am->UserEvent("{$pingTube}Pong", []); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Makes ping tube from classname and ping word |
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* |
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* @param string $workerClassName |
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* |
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* @return string |
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*/ |
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public function makePingTubeName(string $workerClassName): string |
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{ |
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return Text::camelize("ping_{$workerClassName}", '\\'); |
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} |
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/** |
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* Deletes old PID files |
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*/ |
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public function __destruct() |
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{ |
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$pidFilesDir = dirname($this->getPidFile()); |
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$pidFile = $pidFilesDir . '/' . pathinfo($this->getPidFile(), PATHINFO_BASENAME); |
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// Delete old PID files |
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$rm = Util::which('rm'); |
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Processes::mwExec("{$rm} -rf {$pidFile}*"); |
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} |
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} |
mikopbx /
Core
