mirror of https://github.com/friendica/friendica
119 lines
3.3 KiB
PHP
119 lines
3.3 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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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 Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Core\Worker\Repository;
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use Friendica\BaseRepository;
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use Friendica\Core\Worker\Exception\ProcessPersistenceException;
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use Friendica\Database\Database;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Core\Worker\Factory;
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use Friendica\Core\Worker\Entity;
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use Psr\Log\LoggerInterface;
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/**
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* functions for interacting with a process
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*/
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class Process extends BaseRepository
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{
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protected static $table_name = 'process';
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/** @var Factory\Process */
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protected $factory;
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public function __construct(Database $database, LoggerInterface $logger, Factory\Process $factory)
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{
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parent::__construct($database, $logger, $factory);
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}
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/**
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* Starts and Returns the process for a given PID
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*
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* @param int $pid
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*
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* @return Entity\Process
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*/
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public function create(int $pid): Entity\Process
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{
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// Cleanup inactive process
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$this->deleteInactive();
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try {
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$this->db->transaction();
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$newProcess = $this->factory->create($pid);
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if (!$this->db->exists('process', ['pid' => $pid])) {
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if (!$this->db->insert(static::$table_name, [
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'pid' => $newProcess->pid,
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'command' => $newProcess->command,
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'created' => $newProcess->created->format(DateTimeFormat::MYSQL)
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])) {
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throw new ProcessPersistenceException(sprintf('The process with PID %s already exists.', $pid));
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}
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}
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$result = $this->_selectOne(['pid' => $pid]);
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$this->db->commit();
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return $result;
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} catch (\Exception $exception) {
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throw new ProcessPersistenceException(sprintf('Cannot save process with PID %s.', $pid), $exception);
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}
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}
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public function delete(Entity\Process $process)
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{
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try {
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if (!$this->db->delete(static::$table_name, [
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'pid' => $process->pid
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])) {
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throw new ProcessPersistenceException(sprintf('The process with PID %s doesn\'t exists.', $process->pi));
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}
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} catch (\Exception $exception) {
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throw new ProcessPersistenceException(sprintf('Cannot delete process with PID %s.', $process->pid), $exception);
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}
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}
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/**
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* Clean the process table of inactive physical processes
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*/
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private function deleteInactive()
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{
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$this->db->transaction();
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try {
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$processes = $this->db->select('process', ['pid']);
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while ($process = $this->db->fetch($processes)) {
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if (!posix_kill($process['pid'], 0)) {
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$this->db->delete('process', ['pid' => $process['pid']]);
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}
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}
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$this->db->close($processes);
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} catch (\Exception $exception) {
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throw new ProcessPersistenceException('Cannot delete inactive process', $exception);
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} finally {
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$this->db->commit();
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}
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}
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}
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