nextcloud/lib/private/Command/QueueBus.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Julius Härtl <jus@bitgrid.net>
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* @author Robin Appelman <robin@icewind.nl>
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*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
*/
namespace OC\Command;
use OCP\Command\IBus;
use OCP\Command\ICommand;
class QueueBus implements IBus {
/**
* @var ICommand[]|callable[]
*/
private $queue = [];
/**
* Schedule a command to be fired
*
* @param \OCP\Command\ICommand | callable $command
*/
public function push($command) {
$this->queue[] = $command;
}
/**
* Require all commands using a trait to be run synchronous
*
* @param string $trait
*/
public function requireSync($trait) {
}
/**
* @param \OCP\Command\ICommand | callable $command
*/
private function runCommand($command) {
if ($command instanceof ICommand) {
// ensure the command can be serialized
$serialized = serialize($command);
if(strlen($serialized) > 4000) {
throw new \InvalidArgumentException('Trying to push a command which serialized form can not be stored in the database (>4000 character)');
}
$unserialized = unserialize($serialized);
$unserialized->handle();
} else {
$command();
}
}
public function run() {
while ($command = array_shift($this->queue)) {
$this->runCommand($command);
}
}
}