Files
nextcloud-spreed/lib/Service/SessionService.php

139 lines
3.9 KiB
PHP

<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Talk\Service;
use OCA\Talk\Model\Attendee;
use OCA\Talk\Model\Session;
use OCA\Talk\Model\SessionMapper;
use OCA\Talk\Participant;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\DB\Exception;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\Security\ISecureRandom;
class SessionService {
public function __construct(
protected SessionMapper $sessionMapper,
protected IDBConnection $connection,
protected ISecureRandom $secureRandom,
protected ITimeFactory $timeFactory,
) {
}
/**
* Update last ping for multiple sessions
*
* Since this function is called by the HPB with potentially hundreds of
* sessions, we do not use the SessionMapper to get the entities first, as
* that would just not scale good enough.
*
* @param string[] $sessionIds
* @param int $lastPing
*/
public function updateMultipleLastPings(array $sessionIds, int $lastPing): void {
$update = $this->connection->getQueryBuilder();
$update->update('talk_sessions')
->set('last_ping', $update->createNamedParameter($lastPing, IQueryBuilder::PARAM_INT))
->where($update->expr()->in('session_id', $update->createNamedParameter($sessionIds, IQueryBuilder::PARAM_STR_ARRAY)));
$update->executeStatement();
}
public function updateLastPing(Session $session, int $lastPing): void {
$session->setLastPing($lastPing);
$this->sessionMapper->update($session);
}
/**
* @throws \InvalidArgumentException
*/
public function updateSessionState(Session $session, int $state): void {
if (!in_array($state, [Session::STATE_INACTIVE, Session::STATE_ACTIVE], true)) {
throw new \InvalidArgumentException('state');
}
$session->setState($state);
$this->sessionMapper->update($session);
}
/**
* @param int[] $ids
*/
public function deleteSessionsById(array $ids): void {
$this->sessionMapper->deleteByIds($ids);
}
/**
* @param Attendee $attendee
* @return Session[]
*/
public function getAllSessionsForAttendee(Attendee $attendee): array {
return $this->sessionMapper->findByAttendeeId($attendee->getId());
}
/**
* @param Attendee $attendee
* @param string $forceSessionId
* @return Session
* @throws Exception
*/
public function createSessionForAttendee(Attendee $attendee, string $forceSessionId = ''): Session {
$session = new Session();
$session->setAttendeeId($attendee->getId());
$session->setInCall(Participant::FLAG_DISCONNECTED);
$session->setLastPing($this->timeFactory->getTime());
if ($forceSessionId !== '') {
$session->setSessionId($forceSessionId);
$this->sessionMapper->insert($session);
} else {
while (true) {
$sessionId = $this->secureRandom->generate(255);
if (!empty($attendee->getInvitedCloudId())) {
$sessionId = $this->extendSessionIdWithCloudId($sessionId, $attendee->getInvitedCloudId());
}
$session->setSessionId($sessionId);
try {
$this->sessionMapper->insert($session);
break;
} catch (Exception $e) {
// 255 chars are not unique? Try again...
if ($e->getReason() !== Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
throw $e;
}
}
}
}
return $session;
}
/**
* Adds the given cloud id to the given session id.
*
* The session id and the cloud id are separated by '#'.
*
* If the resulting session id is longer than the column length it is
* trimmed at the end as needed.
*
* @param string $sessionId
* @param string $invitedCloudId
* @return string
*/
public function extendSessionIdWithCloudId(string $sessionId, string $invitedCloudId): string {
// Session id column length is 512, while generated session ids are 255
// characters.
$invitedCloudId = substr($invitedCloudId, 0, 256);
return $sessionId . '#' . $invitedCloudId;
}
}