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<?php |
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/* |
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* MikoPBX - free phone system for small business |
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* Copyright © 2017-2023 Alexey Portnov and Nikolay Beketov |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along with this program. |
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* If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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namespace MikoPBX\Core\System; |
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use InvalidArgumentException; |
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use MikoPBX\Core\Workers\Cron\WorkerSafeScriptsCore; |
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use Phalcon\Di\Di; |
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use RuntimeException; |
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use Throwable; |
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/** |
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* Class Processes |
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* |
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* Manages system and PHP processes with enhanced safety and reliability. |
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* |
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* @package MikoPBX\Core\System |
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*/ |
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class Processes |
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{ |
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/** |
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* Default timeout for background process execution in seconds |
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*/ |
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private const DEFAULT_BG_TIMEOUT = 4; |
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/** |
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* Default number of attempts for safe daemon start |
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*/ |
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private const DEFAULT_START_ATTEMPTS = 20; |
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/** |
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* Default timeout between attempts in microseconds |
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*/ |
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private const DEFAULT_ATTEMPT_TIMEOUT = 1000000; |
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/** |
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* Default output file for process logs |
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*/ |
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private const DEFAULT_OUTPUT_FILE = '/dev/null'; |
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/** |
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* Directory for temporary shell scripts |
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*/ |
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private const TEMP_SCRIPTS_DIR = '/tmp'; |
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/** |
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* Valid process actions |
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*/ |
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private const VALID_ACTIONS = ['start', 'stop', 'restart', 'status']; |
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/** |
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* Directory for process lock files |
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*/ |
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private const LOCK_FILE_DIR = '/var/run/php-workers'; |
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private const PID_FILE_SUFFIX = '.pid'; |
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/** |
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* Cleans up stale PID files in the workers directory |
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* |
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* @return void |
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*/ |
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private static function cleanupStalePidFiles(): void |
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{ |
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if (!is_dir(self::LOCK_FILE_DIR)) { |
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return; |
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} |
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$files = glob(self::LOCK_FILE_DIR . '/*' . self::PID_FILE_SUFFIX . '*'); |
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foreach ($files as $file) { |
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// Read PID from file |
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$pid = @file_get_contents($file); |
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if ($pid === false) { |
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@unlink($file); |
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continue; |
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} |
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// Check if process is still running |
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if (!self::isProcessRunning($pid)) { |
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@unlink($file); |
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} |
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} |
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} |
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/** |
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* Gets the path to the PID file for a given class name |
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* |
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* @param string $className The class name |
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* @param int $instanceNum The instance number (for workers with multiple instances) |
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* @return string Path to the PID file |
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*/ |
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public static function getPidFilePath(string $className, int $instanceNum = 1): string |
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{ |
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// Ensure PID directory exists |
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Util::mwMkdir(self::LOCK_FILE_DIR, true); |
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$name = str_replace('\\', '-', $className); |
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if ($instanceNum > 1) { |
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return self::LOCK_FILE_DIR . "/$name-$instanceNum" . self::PID_FILE_SUFFIX; |
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} |
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return self::LOCK_FILE_DIR . "/$name" . self::PID_FILE_SUFFIX; |
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} |
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/** |
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* Gets the path to the PID file for a forked process |
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* |
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* @param string $className The class name |
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* @param int $pid Process ID |
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* @param int $instanceNum The instance number |
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* @return string Path to the forked process PID file |
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*/ |
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public static function getForkedPidFilePath(string $className, int $pid, int $instanceNum = 1): string |
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{ |
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$basePidFile = self::getPidFilePath($className, $instanceNum); |
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return sprintf('%s.%d', $basePidFile, $pid); |
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} |
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/** |
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* Saves a PID to a file with proper locking |
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* |
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* @param string $pidFile Path to the PID file |
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* @param int $pid Process ID to save |
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* @throws RuntimeException If unable to write PID file |
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*/ |
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public static function savePidFile(string $pidFile, int $pid): void |
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{ |
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try { |
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$pidDir = dirname($pidFile); |
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// Ensure PID directory exists |
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if (!is_dir($pidDir) && !mkdir($pidDir, 0755, true)) { |
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throw new RuntimeException("Could not create PID directory: $pidDir"); |
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} |
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// Use exclusive file creation to avoid race conditions |
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$handle = fopen($pidFile, 'c+'); |
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if ($handle === false) { |
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throw new RuntimeException("Could not open PID file: $pidFile"); |
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} |
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if (!flock($handle, LOCK_EX | LOCK_NB)) { |
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fclose($handle); |
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throw new RuntimeException("Could not acquire lock on PID file: $pidFile"); |
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} |
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// Write PID to file |
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if (ftruncate($handle, 0) === false || fwrite($handle, (string)$pid) === false) { |
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flock($handle, LOCK_UN); |
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fclose($handle); |
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throw new RuntimeException("Could not write to PID file: $pidFile"); |
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} |
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flock($handle, LOCK_UN); |
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fclose($handle); |
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} catch (Throwable $e) { |
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SystemMessages::sysLogMsg( |
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__CLASS__, |
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"Failed to save PID file: " . $e->getMessage(), |
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LOG_WARNING |
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); |
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throw new RuntimeException('PID file operation failed', 0, $e); |
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} |
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} |
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/** |
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* Validates process action. |
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* |
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* @param string $action Action to validate |
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* @return bool |
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*/ |
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private static function isValidAction(string $action): bool |
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{ |
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return in_array($action, self::VALID_ACTIONS, true); |
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} |
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/** |
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* Checks if a process is running. |
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* |
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* @param string $processIdOrName Process ID or name |
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* @return bool |
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*/ |
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public static function isProcessRunning(string $processIdOrName): bool |
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{ |
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if (is_numeric($processIdOrName)) { |
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// Check by PID |
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return file_exists("/proc/$processIdOrName"); |
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} |
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// Check by process name |
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return self::getPidOfProcess($processIdOrName) !== ''; |
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} |
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/** |
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* Safely terminates a process with timeout. |
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* |
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* @param string $pid Process ID to terminate |
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* @param int $timeout Timeout in seconds |
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* @return bool Success status |
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*/ |
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private static function safeTerminateProcess(string $pid, int $timeout = 10): bool |
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{ |
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if (empty($pid)) { |
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return false; |
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} |
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$kill = Util::which('kill'); |
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// First try SIGTERM |
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self::mwExec("$kill -SIGTERM $pid"); |
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// Wait for process to terminate |
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$startTime = time(); |
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while (time() - $startTime < $timeout) { |
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if (!self::isProcessRunning($pid)) { |
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return true; |
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} |
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usleep(100000); // 100ms |
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} |
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// Force kill if still running |
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self::mwExec("$kill -9 $pid"); |
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return !self::isProcessRunning($pid); |
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} |
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/** |
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* Waits for a process to start. |
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* |
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* @param string $procName Process name |
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* @param string $excludeName Process name to exclude |
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* @param int $attempts Maximum number of attempts |
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* @param int $timeout Timeout between attempts |
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* @return string Process ID or empty string |
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*/ |
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private static function waitForProcessStart( |
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string $procName, |
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string $excludeName, |
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int $attempts, |
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int $timeout |
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): string { |
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$attempt = 1; |
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while ($attempt < $attempts) { |
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$pid = self::getPidOfProcess($procName, $excludeName); |
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if (!empty($pid)) { |
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return $pid; |
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} |
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usleep($timeout); |
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$attempt++; |
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} |
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return ''; |
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} |
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/** |
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* Kills a process/daemon by name. |
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* |
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* @param string $procName The name of the process/daemon to kill. |
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* @return int|null The return code of the execution. |
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*/ |
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public static function killByName(string $procName): ?int |
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{ |
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if (empty(trim($procName))) { |
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throw new InvalidArgumentException('Process name cannot be empty'); |
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} |
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$killallPath = Util::which('killall'); |
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return self::mwExec($killallPath . ' ' . escapeshellarg($procName)); |
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} |
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/** |
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* Executes a command using exec(). |
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* |
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* @param string $command The command to execute. |
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* @param array|null $outArr Reference to array for command output. |
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* @param int|null $retVal Reference for return value. |
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* @return int The return value of the execution. |
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* @throws RuntimeException If command is empty. |
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*/ |
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public static function mwExec(string $command, ?array &$outArr = null, ?int &$retVal = null): int |
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{ |
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if (empty(trim($command))) { |
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throw new RuntimeException('Empty command provided to mwExec'); |
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} |
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$retVal = 0; |
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$outArr = []; |
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$di = Di::getDefault(); |
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if ($di !== null && $di->getShared('config')->path('core.debugMode')) { |
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echo "mwExec(): $command\n"; |
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} else { |
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exec("$command 2>&1", $outArr, $retVal); |
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} |
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return $retVal; |
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} |
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/** |
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* Executes a command as a background process with timeout. |
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* |
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* @param string $command The command to execute. |
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* @param int $timeout The timeout value in seconds. |
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* @param string $logName The name of the log file. |
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*/ |
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public static function mwExecBgWithTimeout( |
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string $command, |
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int $timeout = self::DEFAULT_BG_TIMEOUT, |
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string $logName = self::DEFAULT_OUTPUT_FILE |
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): void { |
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$di = Di::getDefault(); |
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if ($di !== null && $di->getShared('config')->path('core.debugMode')) { |
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echo "mwExecBg(): $command\n"; |
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return; |
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} |
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|
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$nohup = Util::which('nohup'); |
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$timeout = Util::which('timeout'); |
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exec("$nohup $timeout $timeout $command > $logName 2>&1 &"); |
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} |
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|
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/** |
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* Executes multiple commands sequentially. |
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* |
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* @param array $arrCmds The array of commands to execute. |
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* @param array|null $out Reference to array for output. |
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* @param string $logname The log file name. |
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*/ |
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public static function mwExecCommands(array $arrCmds, ?array &$out = [], string $logname = ''): void |
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{ |
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$out = []; |
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foreach ($arrCmds as $cmd) { |
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$out[] = "$cmd;"; |
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$outCmd = []; |
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self::mwExec($cmd, $outCmd); |
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$out = array_merge($out, $outCmd); |
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} |
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if ($logname !== '') { |
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$result = implode("\n", $out); |
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file_put_contents( |
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self::TEMP_SCRIPTS_DIR . "/{$logname}_commands.log", |
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$result |
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); |
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} |
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} |
361
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|
362
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/** |
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|
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* Restarts all workers in a separate process with improved pipeline. |
364
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|
* |
365
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|
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* The restart process: |
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* 1. Starts WorkerSafeScriptsCore with restart parameter |
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* 2. WorkerSafeScriptsCore collects all workers and their forks |
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* 3. Starts new instances of each worker |
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* 4. Gracefully shuts down old workers |
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* |
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*/ |
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public static function restartAllWorkers(): void |
373
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{ |
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$workerSafeScriptsPath = Util::getFilePathByClassName(WorkerSafeScriptsCore::class); |
375
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$php = Util::which('php'); |
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|
377
|
|
|
// First restart WorkerSafeScriptsCore itself |
378
|
|
|
// This will trigger the full restart pipeline |
379
|
|
|
$workerSafeScripts = "$php -f $workerSafeScriptsPath restart > /dev/null 2> /dev/null"; |
380
|
|
|
self::mwExec($workerSafeScripts); |
381
|
|
|
} |
382
|
|
|
|
383
|
|
|
/** |
384
|
|
|
* Manages a PHP worker process. |
385
|
|
|
* |
386
|
|
|
* @param string $className The class name of the PHP worker. |
387
|
|
|
* @param string $paramForPHPWorker The parameter for the PHP worker. |
388
|
|
|
* @param string $action The action to perform. |
389
|
|
|
*/ |
390
|
|
|
public static function processPHPWorker( |
391
|
|
|
string $className, |
392
|
|
|
string $paramForPHPWorker = 'start', |
393
|
|
|
string $action = 'restart' |
394
|
|
|
): void { |
395
|
|
|
// Clean up stale PID files before managing workers |
396
|
|
|
self::cleanupStalePidFiles(); |
397
|
|
|
|
398
|
|
|
if (!self::isValidAction($action)) { |
399
|
|
|
throw new InvalidArgumentException("Invalid action: $action"); |
400
|
|
|
} |
401
|
|
|
|
402
|
|
|
SystemMessages::sysLogMsg( |
403
|
|
|
__METHOD__, |
404
|
|
|
"processPHPWorker $className action-$action", |
405
|
|
|
LOG_DEBUG |
406
|
|
|
); |
407
|
|
|
|
408
|
|
|
$workerPath = Util::getFilePathByClassName($className); |
409
|
|
|
if (empty($workerPath) || !class_exists($className)) { |
410
|
|
|
return; |
411
|
|
|
} |
412
|
|
|
|
413
|
|
|
$php = Util::which('php'); |
414
|
|
|
$command = "$php -f $workerPath"; |
415
|
|
|
$kill = Util::which('kill'); |
416
|
|
|
|
417
|
|
|
$activeProcesses = self::getPidOfProcess($className); |
418
|
|
|
$processes = array_filter(explode(' ', $activeProcesses)); |
419
|
|
|
$currentProcCount = count($processes); |
420
|
|
|
|
421
|
|
|
// Определяем количество нужных экземпляров из maxProc класса |
422
|
|
|
$neededProcCount = 1; // По умолчанию 1 процесс |
423
|
|
|
|
424
|
|
|
if (class_exists($className)) { |
425
|
|
|
// Получаем значение maxProc из класса |
426
|
|
|
$reflectionClass = new \ReflectionClass($className); |
427
|
|
|
if ($reflectionClass->hasProperty('maxProc')) { |
428
|
|
|
$defaultProperties = $reflectionClass->getDefaultProperties(); |
429
|
|
|
if (isset($defaultProperties['maxProc'])) { |
430
|
|
|
$neededProcCount = (int)$defaultProperties['maxProc']; |
431
|
|
|
} |
432
|
|
|
} |
433
|
|
|
} |
434
|
|
|
|
435
|
|
|
self::handleWorkerAction( |
436
|
|
|
$action, |
437
|
|
|
$activeProcesses, |
438
|
|
|
$command, |
439
|
|
|
$paramForPHPWorker, |
440
|
|
|
$kill, |
441
|
|
|
$currentProcCount, |
442
|
|
|
$neededProcCount, |
443
|
|
|
$processes, |
444
|
|
|
$className |
445
|
|
|
); |
446
|
|
|
} |
447
|
|
|
|
448
|
|
|
/** |
449
|
|
|
* Handles worker process actions. |
450
|
|
|
* |
451
|
|
|
* @param string $action Action to perform |
452
|
|
|
* @param string $activeProcesses Active process IDs |
453
|
|
|
* @param string $command Command to execute |
454
|
|
|
* @param string $paramForPHPWorker Worker parameters |
455
|
|
|
* @param string $kill Kill command path |
456
|
|
|
* @param int $currentProcCount Current process count |
457
|
|
|
* @param int $neededProcCount Needed process count |
458
|
|
|
* @param array $processes Process IDs array |
459
|
|
|
* @param string $className Worker class name |
460
|
|
|
*/ |
461
|
|
|
private static function handleWorkerAction( |
462
|
|
|
string $action, |
463
|
|
|
string $activeProcesses, |
464
|
|
|
string $command, |
465
|
|
|
string $paramForPHPWorker, |
466
|
|
|
string $kill, |
467
|
|
|
int $currentProcCount, |
468
|
|
|
int $neededProcCount, |
469
|
|
|
array $processes, |
470
|
|
|
string $className = '' |
471
|
|
|
): void { |
472
|
|
|
switch ($action) { |
473
|
|
|
case 'restart': |
474
|
|
|
self::handleRestartAction( |
475
|
|
|
$activeProcesses, |
476
|
|
|
$kill, |
477
|
|
|
$command, |
478
|
|
|
$paramForPHPWorker, |
479
|
|
|
$className, |
480
|
|
|
$neededProcCount |
481
|
|
|
); |
482
|
|
|
break; |
483
|
|
|
case 'stop': |
484
|
|
|
self::handleStopAction($activeProcesses, $kill); |
485
|
|
|
break; |
486
|
|
|
case 'start': |
487
|
|
|
self::handleStartAction( |
488
|
|
|
$currentProcCount, |
489
|
|
|
$neededProcCount, |
490
|
|
|
$command, |
491
|
|
|
$paramForPHPWorker, |
492
|
|
|
$processes, |
493
|
|
|
$kill |
494
|
|
|
); |
495
|
|
|
break; |
496
|
|
|
} |
497
|
|
|
} |
498
|
|
|
|
499
|
|
|
/** |
500
|
|
|
* Handles the restart action for a worker. |
501
|
|
|
* |
502
|
|
|
* @param string $activeProcesses Active process IDs |
503
|
|
|
* @param string $kill Kill command path |
504
|
|
|
* @param string $command Command to execute |
505
|
|
|
* @param string $paramForPHPWorker Worker parameters |
506
|
|
|
* @param string $workerClass Worker class name |
507
|
|
|
* @param int $neededProcCount Number of instances needed |
508
|
|
|
*/ |
509
|
|
|
private static function handleRestartAction( |
510
|
|
|
string $activeProcesses, |
511
|
|
|
string $kill, |
512
|
|
|
string $command, |
513
|
|
|
string $paramForPHPWorker, |
514
|
|
|
string $workerClass = '', |
515
|
|
|
int $neededProcCount = 1 |
516
|
|
|
): void { |
517
|
|
|
// Отладочное логирование |
518
|
|
|
SystemMessages::sysLogMsg( |
519
|
|
|
__METHOD__, |
520
|
|
|
sprintf( |
521
|
|
|
"Restarting worker: %s, neededProcCount=%d, activeProcesses=%s", |
522
|
|
|
$workerClass, |
523
|
|
|
$neededProcCount, |
524
|
|
|
$activeProcesses |
525
|
|
|
), |
526
|
|
|
LOG_NOTICE |
527
|
|
|
); |
528
|
|
|
|
529
|
|
|
if ($activeProcesses !== '') { |
530
|
|
|
SystemMessages::sysLogMsg( |
531
|
|
|
__METHOD__, |
532
|
|
|
sprintf("SEND signal: %s", "SIGUSR1 $activeProcesses"), |
533
|
|
|
LOG_WARNING |
534
|
|
|
); |
535
|
|
|
|
536
|
|
|
// Send SIGUSR1 first to initiate graceful shutdown |
537
|
|
|
self::mwExec("$kill -SIGUSR1 $activeProcesses > /dev/null 2>&1"); |
538
|
|
|
|
539
|
|
|
// Wait for 2 seconds to allow worker to handle SIGUSR1 |
540
|
|
|
sleep(2); |
541
|
|
|
|
542
|
|
|
SystemMessages::sysLogMsg( |
543
|
|
|
__METHOD__, |
544
|
|
|
sprintf("SEND signal: %s", "SIGTERM $activeProcesses"), |
545
|
|
|
LOG_WARNING |
546
|
|
|
); |
547
|
|
|
|
548
|
|
|
// Then send SIGTERM |
549
|
|
|
self::mwExecBg("$kill -SIGTERM $activeProcesses"); |
550
|
|
|
} |
551
|
|
|
|
552
|
|
|
// Запуск воркеров с поддержкой пула |
553
|
|
|
if ($neededProcCount > 1) { |
554
|
|
|
SystemMessages::sysLogMsg( |
555
|
|
|
__METHOD__, |
556
|
|
|
sprintf("Starting worker pool with %d instances for %s", $neededProcCount, $workerClass), |
557
|
|
|
LOG_NOTICE |
558
|
|
|
); |
559
|
|
|
|
560
|
|
|
// Запускаем необходимое количество экземпляров |
561
|
|
|
for ($i = 1; $i <= $neededProcCount; $i++) { |
562
|
|
|
$instanceParam = " --instance-id={$i}"; |
563
|
|
|
|
564
|
|
|
SystemMessages::sysLogMsg( |
565
|
|
|
__METHOD__, |
566
|
|
|
sprintf("Starting worker instance %d/%d: %s", $i, $neededProcCount, $command . " " . $paramForPHPWorker . $instanceParam), |
567
|
|
|
LOG_DEBUG |
568
|
|
|
); |
569
|
|
|
|
570
|
|
|
self::mwExecBg("{$command} {$paramForPHPWorker}{$instanceParam}"); |
571
|
|
|
|
572
|
|
|
// Небольшая задержка между запусками экземпляров для предотвращения конфликтов |
573
|
|
|
usleep(250000); // 250ms |
574
|
|
|
} |
575
|
|
|
} else { |
576
|
|
|
// Start new instance (for non-pool workers) |
577
|
|
|
self::mwExecBg("$command $paramForPHPWorker"); |
578
|
|
|
} |
579
|
|
|
} |
580
|
|
|
|
581
|
|
|
/** |
582
|
|
|
* Handles the stop action for a worker. |
583
|
|
|
* |
584
|
|
|
* @param string $activeProcesses Active process IDs |
585
|
|
|
* @param string $kill Kill command path |
586
|
|
|
*/ |
587
|
|
|
private static function handleStopAction(string $activeProcesses, string $kill): void |
588
|
|
|
{ |
589
|
|
|
if ($activeProcesses !== '') { |
590
|
|
|
self::mwExec("$kill -SIGUSR2 $activeProcesses > /dev/null 2>&1 &"); |
591
|
|
|
self::mwExecBg("$kill -SIGTERM $activeProcesses"); |
592
|
|
|
} |
593
|
|
|
} |
594
|
|
|
|
595
|
|
|
/** |
596
|
|
|
* Handles the start action for a worker. |
597
|
|
|
* |
598
|
|
|
* @param int $currentProcCount Current process count |
599
|
|
|
* @param int $neededProcCount Needed process count |
600
|
|
|
* @param string $command Command to execute |
601
|
|
|
* @param string $paramForPHPWorker Worker parameters |
602
|
|
|
* @param array $processes Process IDs array |
603
|
|
|
* @param string $kill Kill command path |
604
|
|
|
*/ |
605
|
|
|
private static function handleStartAction( |
606
|
|
|
int $currentProcCount, |
607
|
|
|
int $neededProcCount, |
608
|
|
|
string $command, |
609
|
|
|
string $paramForPHPWorker, |
610
|
|
|
array $processes, |
611
|
|
|
string $kill |
612
|
|
|
): void { |
613
|
|
|
if ($currentProcCount === $neededProcCount) { |
614
|
|
|
return; |
615
|
|
|
} |
616
|
|
|
|
617
|
|
|
// Добавляем отладочное логирование |
618
|
|
|
SystemMessages::sysLogMsg( |
619
|
|
|
__METHOD__, |
620
|
|
|
sprintf( |
621
|
|
|
"Starting worker pool: currentCount=%d, neededCount=%d, command=%s", |
622
|
|
|
$currentProcCount, |
623
|
|
|
$neededProcCount, |
624
|
|
|
$command |
625
|
|
|
), |
626
|
|
|
LOG_DEBUG |
627
|
|
|
); |
628
|
|
|
|
629
|
|
|
if ($neededProcCount > $currentProcCount) { |
630
|
|
|
// Запускаем новые экземпляры с указанием instance ID |
631
|
|
|
for ($i = 0; $i < $neededProcCount; $i++) { |
632
|
|
|
$instanceParam = ''; |
633
|
|
|
// Если мы запускаем больше одного экземпляра, добавляем параметр instanceId |
634
|
|
|
if ($neededProcCount > 1) { |
635
|
|
|
$instanceId = $i + 1; // Нумеруем с 1 |
636
|
|
|
$instanceParam = " --instance-id={$instanceId}"; |
637
|
|
|
} |
638
|
|
|
|
639
|
|
|
// Отладочное логирование |
640
|
|
|
SystemMessages::sysLogMsg( |
641
|
|
|
__METHOD__, |
642
|
|
|
sprintf( |
643
|
|
|
"Launching instance #%d with command: %s %s%s", |
644
|
|
|
($i+1), |
645
|
|
|
$command, |
646
|
|
|
$paramForPHPWorker, |
647
|
|
|
$instanceParam |
648
|
|
|
), |
649
|
|
|
LOG_DEBUG |
650
|
|
|
); |
651
|
|
|
|
652
|
|
|
self::mwExecBg("{$command} {$paramForPHPWorker}{$instanceParam}"); |
653
|
|
|
} |
654
|
|
|
} elseif ($currentProcCount > $neededProcCount) { |
655
|
|
|
$countProc4Kill = $currentProcCount - $neededProcCount; |
656
|
|
|
for ($i = 0; $i < $countProc4Kill; $i++) { |
657
|
|
|
if (!isset($processes[$i])) { |
658
|
|
|
break; |
659
|
|
|
} |
660
|
|
|
self::mwExec("$kill -SIGUSR1 {$processes[$i]} > /dev/null 2>&1 &"); |
661
|
|
|
self::mwExecBg("$kill -SIGTERM {$processes[$i]}"); |
662
|
|
|
} |
663
|
|
|
} |
664
|
|
|
} |
665
|
|
|
|
666
|
|
|
/** |
667
|
|
|
* Retrieves the PID of a process by its name. |
668
|
|
|
* |
669
|
|
|
* @param string $name Process name |
670
|
|
|
* @param string $exclude Process name to exclude |
671
|
|
|
* @return string Process IDs |
672
|
|
|
*/ |
673
|
|
|
public static function getPidOfProcess(string $name, string $exclude = ''): string |
674
|
|
|
{ |
675
|
|
|
$ps = Util::which('ps'); |
676
|
|
|
$grep = Util::which('grep'); |
677
|
|
|
$awk = Util::which('awk'); |
678
|
|
|
|
679
|
|
|
$name = addslashes($name); |
680
|
|
|
$filterCmd = ''; |
681
|
|
|
if (!empty($exclude)) { |
682
|
|
|
$filterCmd = "| $grep -v " . escapeshellarg($exclude); |
683
|
|
|
} |
684
|
|
|
|
685
|
|
|
$out = []; |
686
|
|
|
self::mwExec( |
687
|
|
|
"$ps -A -o 'pid,args' $filterCmd | $grep '$name' | $grep -v grep | $awk '{print $1}'", |
688
|
|
|
$out |
689
|
|
|
); |
690
|
|
|
|
691
|
|
|
return trim(implode(' ', $out)); |
|
|
|
|
692
|
|
|
} |
693
|
|
|
|
694
|
|
|
/** |
695
|
|
|
* Executes a command as a background process. |
696
|
|
|
* |
697
|
|
|
* @param string $command Command to execute |
698
|
|
|
* @param string $outFile Output file path |
699
|
|
|
* @param int $sleepTime Sleep time in seconds |
700
|
|
|
*/ |
701
|
|
|
public static function mwExecBg( |
702
|
|
|
string $command, |
703
|
|
|
string $outFile = self::DEFAULT_OUTPUT_FILE, |
704
|
|
|
int $sleepTime = 0 |
705
|
|
|
): void { |
706
|
|
|
$nohup = Util::which('nohup'); |
707
|
|
|
$sh = Util::which('sh'); |
708
|
|
|
$rm = Util::which('rm'); |
709
|
|
|
$sleep = Util::which('sleep'); |
710
|
|
|
|
711
|
|
|
if ($sleepTime > 0) { |
712
|
|
|
$filename = self::TEMP_SCRIPTS_DIR . '/' . time() . '_noop.sh'; |
713
|
|
|
file_put_contents( |
714
|
|
|
$filename, |
715
|
|
|
"$sleep $sleepTime; $command; $rm -rf $filename" |
716
|
|
|
); |
717
|
|
|
$noopCommand = "$nohup $sh $filename > $outFile 2>&1 &"; |
718
|
|
|
} else { |
719
|
|
|
$noopCommand = "$nohup $command > $outFile 2>&1 &"; |
720
|
|
|
} |
721
|
|
|
exec($noopCommand); |
722
|
|
|
} |
723
|
|
|
|
724
|
|
|
/** |
725
|
|
|
* Manages a daemon/worker process. |
726
|
|
|
* |
727
|
|
|
* @param string $cmd Command to execute |
728
|
|
|
* @param string $param Command parameters |
729
|
|
|
* @param string $procName Process name |
730
|
|
|
* @param string $action Action to perform |
731
|
|
|
* @param string $outFile Output file path |
732
|
|
|
* |
733
|
|
|
* @return array|bool Process status or operation result |
734
|
|
|
* @throws InvalidArgumentException If action is invalid |
735
|
|
|
*/ |
736
|
|
|
public static function processWorker( |
737
|
|
|
string $cmd, |
738
|
|
|
string $param, |
739
|
|
|
string $procName, |
740
|
|
|
string $action, |
741
|
|
|
string $outFile = self::DEFAULT_OUTPUT_FILE |
742
|
|
|
): bool|array { |
743
|
|
|
if (!self::isValidAction($action)) { |
744
|
|
|
throw new InvalidArgumentException("Invalid action: $action"); |
745
|
|
|
} |
746
|
|
|
|
747
|
|
|
$kill = Util::which('kill'); |
748
|
|
|
$nohup = Util::which('nohup'); |
749
|
|
|
$workerPID = self::getPidOfProcess($procName); |
750
|
|
|
|
751
|
|
|
return match ($action) { |
752
|
|
|
'status' => [ |
753
|
|
|
'status' => ($workerPID !== '') ? 'Started' : 'Stopped', |
754
|
|
|
'app' => $procName, |
755
|
|
|
'PID' => $workerPID |
756
|
|
|
], |
757
|
|
|
'restart' => self::handleWorkerRestart($kill, $workerPID, $nohup, $cmd, $param, $outFile), |
758
|
|
|
'stop' => self::handleWorkerStop($kill, $workerPID), |
759
|
|
|
'start' => self::handleWorkerStart($workerPID, $nohup, $cmd, $param, $outFile), |
760
|
|
|
default => throw new InvalidArgumentException("Unsupported action: $action"), |
761
|
|
|
}; |
762
|
|
|
} |
763
|
|
|
|
764
|
|
|
/** |
765
|
|
|
* Handles worker restart operation. |
766
|
|
|
* |
767
|
|
|
* @param string $kill Kill command path |
768
|
|
|
* @param string $workerPID Worker process ID |
769
|
|
|
* @param string $nohup Nohup command path |
770
|
|
|
* @param string $cmd Command to execute |
771
|
|
|
* @param string $param Command parameters |
772
|
|
|
* @param string $outFile Output file path |
773
|
|
|
* @return bool |
774
|
|
|
*/ |
775
|
|
|
private static function handleWorkerRestart( |
776
|
|
|
string $kill, |
|
|
|
|
777
|
|
|
string $workerPID, |
778
|
|
|
string $nohup, |
779
|
|
|
string $cmd, |
780
|
|
|
string $param, |
781
|
|
|
string $outFile |
782
|
|
|
): bool { |
783
|
|
|
if ($workerPID !== '') { |
784
|
|
|
self::safeTerminateProcess($workerPID); |
785
|
|
|
} |
786
|
|
|
self::mwExec("$nohup $cmd $param > $outFile 2>&1 &"); |
787
|
|
|
return true; |
788
|
|
|
} |
789
|
|
|
|
790
|
|
|
/** |
791
|
|
|
* Handles worker stop operation. |
792
|
|
|
* |
793
|
|
|
* @param string $kill Kill command path |
794
|
|
|
* @param string $workerPID Worker process ID |
795
|
|
|
* @return bool |
796
|
|
|
*/ |
797
|
|
|
private static function handleWorkerStop(string $kill, string $workerPID): bool |
|
|
|
|
798
|
|
|
{ |
799
|
|
|
if ($workerPID !== '') { |
800
|
|
|
self::safeTerminateProcess($workerPID); |
801
|
|
|
} |
802
|
|
|
return true; |
803
|
|
|
} |
804
|
|
|
|
805
|
|
|
/** |
806
|
|
|
* Handles worker start operation. |
807
|
|
|
* |
808
|
|
|
* @param string $workerPID Worker process ID |
809
|
|
|
* @param string $nohup Nohup command path |
810
|
|
|
* @param string $cmd Command to execute |
811
|
|
|
* @param string $param Command parameters |
812
|
|
|
* @param string $outFile Output file path |
813
|
|
|
* @return bool |
814
|
|
|
*/ |
815
|
|
|
private static function handleWorkerStart( |
816
|
|
|
string $workerPID, |
817
|
|
|
string $nohup, |
818
|
|
|
string $cmd, |
819
|
|
|
string $param, |
820
|
|
|
string $outFile |
821
|
|
|
): bool { |
822
|
|
|
if ($workerPID === '') { |
823
|
|
|
self::mwExec("$nohup $cmd $param > $outFile 2>&1 &"); |
824
|
|
|
} |
825
|
|
|
return true; |
826
|
|
|
} |
827
|
|
|
|
828
|
|
|
/** |
829
|
|
|
* Starts a daemon process with failure control. |
830
|
|
|
* |
831
|
|
|
* @param string $procName Process name |
832
|
|
|
* @param string $args Process arguments |
833
|
|
|
* @param int $attemptsCount Number of attempts to start |
834
|
|
|
* @param int $timeout Timeout between attempts in microseconds |
835
|
|
|
* @param string $outFile Output file path |
836
|
|
|
* @return bool Success status |
837
|
|
|
*/ |
838
|
|
|
public static function safeStartDaemon( |
839
|
|
|
string $procName, |
840
|
|
|
string $args, |
841
|
|
|
int $attemptsCount = self::DEFAULT_START_ATTEMPTS, |
842
|
|
|
int $timeout = self::DEFAULT_ATTEMPT_TIMEOUT, |
843
|
|
|
string $outFile = self::DEFAULT_OUTPUT_FILE |
844
|
|
|
): bool { |
845
|
|
|
$result = true; |
846
|
|
|
$baseName = "safe-$procName"; |
847
|
|
|
$safeLink = "/sbin/$baseName"; |
848
|
|
|
|
849
|
|
|
try { |
850
|
|
|
Util::createUpdateSymlink('/etc/rc/worker_reload', $safeLink); |
851
|
|
|
self::killByName($baseName); |
852
|
|
|
self::killByName($procName); |
853
|
|
|
|
854
|
|
|
// Start the process in the background |
855
|
|
|
self::mwExecBg("$safeLink $args", $outFile); |
856
|
|
|
|
857
|
|
|
// Wait for the process to start with timeout |
858
|
|
|
$pid = self::waitForProcessStart($procName, $baseName, $attemptsCount, $timeout); |
859
|
|
|
|
860
|
|
|
if (empty($pid)) { |
861
|
|
|
SystemMessages::echoWithSyslog(" - Wait for start '$procName' fail" . PHP_EOL); |
862
|
|
|
$result = false; |
863
|
|
|
} |
864
|
|
|
} catch (Throwable $e) { |
865
|
|
|
SystemMessages::echoWithSyslog("Error starting daemon '$procName': " . $e->getMessage()); |
866
|
|
|
$result = false; |
867
|
|
|
} |
868
|
|
|
|
869
|
|
|
return $result; |
870
|
|
|
} |
871
|
|
|
|
872
|
|
|
} |
873
|
|
|
|
If you suppress an error, we recommend checking for the error condition explicitly: