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<?php
declare(strict_types=1);
/**
* @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Georg Ehrke <oc.list@georgehrke.com>
* @author Joas Schilling <coding@schilljs.com>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Calendar\Resource;
use OC\AppFramework\Bootstrap\Coordinator;
use OCP\Calendar\Resource\IBackend;
use OCP\Calendar\Resource\IManager;
use OCP\IServerContainer;
class Manager implements IManager {
private Coordinator $bootstrapCoordinator;
private IServerContainer $server;
private bool $bootstrapBackendsLoaded = false;
/**
* @var string[] holds all registered resource backends
* @psalm-var class-string<IBackend>[]
*/
private $backends = [];
/** @var IBackend[] holds all backends that have been initialized already */
private $initializedBackends = [];
public function __construct(Coordinator $bootstrapCoordinator,
IServerContainer $server) {
$this->bootstrapCoordinator = $bootstrapCoordinator;
$this->server = $server;
}
/**
* Registers a resource backend
*
* @param string $backendClass
* @return void
* @since 14.0.0
*/
public function registerBackend(string $backendClass) {
$this->backends[$backendClass] = $backendClass;
}
/**
* Unregisters a resource backend
*
* @param string $backendClass
* @return void
* @since 14.0.0
*/
public function unregisterBackend(string $backendClass) {
unset($this->backends[$backendClass], $this->initializedBackends[$backendClass]);
}
private function fetchBootstrapBackends(): void {
if ($this->bootstrapBackendsLoaded) {
return;
}
$context = $this->bootstrapCoordinator->getRegistrationContext();
if ($context === null) {
// Too soon
return;
}
foreach ($context->getCalendarResourceBackendRegistrations() as $registration) {
$this->backends[] = $registration->getService();
}
}
/**
* @return IBackend[]
* @throws \OCP\AppFramework\QueryException
* @since 14.0.0
*/
public function getBackends():array {
$this->fetchBootstrapBackends();
foreach ($this->backends as $backend) {
if (isset($this->initializedBackends[$backend])) {
continue;
}
$this->initializedBackends[$backend] = $this->server->query($backend);
}
return array_values($this->initializedBackends);
}
/**
* @param string $backendId
* @throws \OCP\AppFramework\QueryException
* @return IBackend|null
*/
public function getBackend($backendId) {
$backends = $this->getBackends();
foreach ($backends as $backend) {
if ($backend->getBackendIdentifier() === $backendId) {
return $backend;
}
}
return null;
}
/**
* removes all registered backend instances
* @return void
* @since 14.0.0
*/
public function clear() {
$this->backends = [];
$this->initializedBackends = [];
}
}
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