XC_VM/src/cli/CronJobs/UsersCronJob.php

<?php

require_once __DIR__ . '/../CronTrait.php';

class UsersCronJob implements CommandInterface {
    use CronTrait;

    private $rPHPPIDs = array();
    private $rServers = array();

    public function getName(): string {
        return 'cron:users';
    }

    public function getDescription(): string {
        return 'Cron: manage user connections, Redis sync, divergence';
    }

    public function execute(array $rArgs): int {
        if (!$this->assertRunAsXcVm()) {
            return 1;
        }

        set_time_limit(0);
        ini_set('memory_limit', -1);

        $this->setProcessTitle('XC_VM[Users]');
        $this->acquireCronLock();

        global $db;

        $rSync = null;
        $this->rServers = ServerRepository::getAll();

        if (!empty($rArgs[0]) && $this->rServers[SERVER_ID]['is_main']) {
            RedisManager::ensureConnected();

            if (RedisManager::isConnected()) {
                $rSync = intval($rArgs[0]);

                if ($rSync == 1) {
                    $rDeSync = $rRedisUsers = $rRedisUpdate = $rRedisSet = array();
                    $db->query('SELECT * FROM `lines_live` WHERE `hls_end` = 0;');
                    $rRows = $db->get_rows();

                    if (count($rRows) > 0) {
                        $rStreamIDs = array();

                        foreach ($rRows as $rRow) {
                            $streamId = (int)$rRow['stream_id'];
                            if ($streamId > 0 && !in_array($streamId, $rStreamIDs)) {
                                $rStreamIDs[] = $streamId;
                            }
                        }

                        $rOnDemand = array();
                        if (count($rStreamIDs) > 0) {
                            $db->query('SELECT `stream_id`, `server_id`, `on_demand` FROM `streams_servers` WHERE `stream_id` IN (' . implode(',', $rStreamIDs) . ');');
                            foreach ($db->get_rows() as $rRow) {
                                $rOnDemand[$rRow['stream_id']][$rRow['server_id']] = intval($rRow['on_demand']);
                            }
                        }

                        $rRedis = RedisManager::instance()->multi();

                        foreach ($rRows as $rRow) {
                            echo 'Resynchronising UUID: ' . $rRow['uuid'] . "\n";

                            if (empty($rRow['hmac_id'])) {
                                $rRow['identity'] = $rRow['user_id'];
                            } else {
                                $rRow['identity'] = $rRow['hmac_id'] . '_' . $rRow['hmac_identifier'];
                            }

                            $rRow['on_demand'] = ($rOnDemand[$rRow['stream_id']][$rRow['server_id']] ?: 0);
                            $rRedis->zAdd('LINE#' . $rRow['identity'], $rRow['date_start'], $rRow['uuid']);
                            $rRedis->zAdd('LINE_ALL#' . $rRow['identity'], $rRow['date_start'], $rRow['uuid']);
                            $rRedis->zAdd('STREAM#' . $rRow['stream_id'], $rRow['date_start'], $rRow['uuid']);
                            $rRedis->zAdd('SERVER#' . $rRow['server_id'], $rRow['date_start'], $rRow['uuid']);

                            if ($rRow['user_id']) {
                                $rRedis->zAdd('SERVER_LINES#' . $rRow['server_id'], $rRow['user_id'], $rRow['uuid']);
                            }

                            if ($rRow['proxy_id']) {
                                $rRedis->zAdd('PROXY#' . $rRow['proxy_id'], $rRow['date_start'], $rRow['uuid']);
                            }

                            $rRedis->zAdd('CONNECTIONS', $rRow['date_start'], $rRow['uuid']);
                            $rRedis->zAdd('LIVE', $rRow['date_start'], $rRow['uuid']);
                            $rRedis->set($rRow['uuid'], igbinary_serialize($rRow));
                            $rDeSync[] = $rRow['uuid'];
                        }
                        $rRedis->exec();

                        if (count($rDeSync) > 0) {
                            $db->query("DELETE FROM `lines_live` WHERE `uuid` IN ('" . implode("','", $rDeSync) . "');");
                        }
                    }
                }
            } else {
                echo "Couldn't connect to Redis.\n";
                return 1;
            }
        }

        if (SettingsManager::getAll()['redis_handler'] && $this->rServers[SERVER_ID]['is_main']) {
            $this->rServers = ServerRepository::getAll(true);

            foreach ($this->rServers as $rServer) {
                $this->rPHPPIDs[$rServer['id']] = (array_map('intval', json_decode($rServer['php_pids'], true)) ?: array());
            }
        }

        $this->loadCron();

        return 0;
    }

    private function processDeletions($rDelete, $rDelStream = array()) {
        global $db;
        $rTime = time();

        if (SettingsManager::getAll()['redis_handler']) {
            if ($rDelete['count'] > 0) {
                $rRedis = RedisManager::instance()->multi();

                foreach ($rDelete['line'] as $rUserID => $rUUIDs) {
                    $rRedis->zRem('LINE#' . $rUserID, ...$rUUIDs);
                    $rRedis->zRem('LINE_ALL#' . $rUserID, ...$rUUIDs);
                }

                foreach ($rDelete['stream'] as $rStreamID => $rUUIDs) {
                    $rRedis->zRem('STREAM#' . $rStreamID, ...$rUUIDs);
                }

                foreach ($rDelete['server'] as $rServerID => $rUUIDs) {
                    $rRedis->zRem('SERVER#' . $rServerID, ...$rUUIDs);
                    $rRedis->zRem('SERVER_LINES#' . $rServerID, ...$rUUIDs);
                }

                foreach ($rDelete['proxy'] as $rProxyID => $rUUIDs) {
                    $rRedis->zRem('PROXY#' . $rProxyID, ...$rUUIDs);
                }

                if (count($rDelete['uuid']) > 0) {
                    $rRedis->zRem('CONNECTIONS', ...$rDelete['uuid']);
                    $rRedis->zRem('LIVE', ...$rDelete['uuid']);
                    $rRedis->sRem('ENDED', ...$rDelete['uuid']);
                    $rRedis->del(...$rDelete['uuid']);
                }

                $rRedis->exec();
            }
        } else {
            foreach ($rDelete as $rServerID => $rConnections) {
                if (count($rConnections) > 0) {
                    $db->query("DELETE FROM `lines_live` WHERE `uuid` IN ('" . implode("','", $rConnections) . "')");
                }
            }
        }

        foreach ((SettingsManager::getAll()['redis_handler'] ? $rDelete['server'] : $rDelete) as $rServerID => $rConnections) {
            if ($rServerID != SERVER_ID) {
                $rQuery = '';

                foreach ($rConnections as $rConnection) {
                    $rQuery .= '(' . $rServerID . ',1,' . $rTime . ',' . $db->escape(json_encode(array('type' => 'delete_con', 'uuid' => $rConnection))) . '),';
                }
                $rQuery = rtrim($rQuery, ',');

                if (!empty($rQuery)) {
                    $db->query('INSERT INTO `signals`(`server_id`, `cache`, `time`, `custom_data`) VALUES ' . $rQuery . ';');
                }
            }
        }

        foreach ($rDelStream as $rStreamID => $rConnections) {
            foreach ($rConnections as $rConnection) {
                @unlink(CONS_TMP_PATH . $rStreamID . '/' . $rConnection);
            }
        }

        if (SettingsManager::getAll()['redis_handler']) {
            return array('line' => array(), 'server' => array(), 'server_lines' => array(), 'proxy' => array(), 'stream' => array(), 'uuid' => array(), 'count' => 0);
        }

        return array();
    }

    private function loadCron(): void {
        global $db;

        $rServers = $this->rServers;
        $rPHPPIDs = $this->rPHPPIDs;

        if (SettingsManager::getAll()['redis_handler']) {
            RedisManager::ensureConnected();
        }

        $rStartTime = time();

        if (!SettingsManager::getAll()['redis_handler'] || $rServers[SERVER_ID]['is_main']) {
            $rAutoKick = SettingsManager::getAll()['user_auto_kick_hours'] * 3600;
            $rLiveKeys = $rDelete = $rDeleteStream = array();

            if (SettingsManager::getAll()['redis_handler']) {
                $rRedisDelete = array('line' => array(), 'server' => array(), 'server_lines' => array(), 'proxy' => array(), 'stream' => array(), 'uuid' => array(), 'count' => 0);
                $rUsers = array();
                list($rKeys, $rConnections) = ConnectionTracker::getConnections();
                $i = 0;

                for ($rSize = count($rConnections); $i < $rSize; $i++) {
                    $rConnection = $rConnections[$i];

                    if (is_array($rConnection)) {
                        $rUsers[$rConnection['identity']][] = $rConnection;
                        $rLiveKeys[] = $rConnection['uuid'];
                    } else {
                        $rRedisDelete['count']++;
                        $rRedisDelete['uuid'][] = $rKeys[$i];
                    }
                }
                unset($rConnections);
            } else {
                $rUsers = ConnectionTracker::getConnections(($rServers[SERVER_ID]['is_main'] ? null : SERVER_ID));
            }

            $rRestreamerArray = $rMaxConnectionsArray = array();
            $rUserIDs = InputValidator::confirmIDs(array_keys($rUsers));

            if (count($rUserIDs) > 0) {
                $db->query('SELECT `id`, `max_connections`, `is_restreamer` FROM `lines` WHERE `id` IN (' . implode(',', $rUserIDs) . ');');

                foreach ($db->get_rows() as $rRow) {
                    $rMaxConnectionsArray[$rRow['id']] = $rRow['max_connections'];
                    $rRestreamerArray[$rRow['id']] = $rRow['is_restreamer'];
                }
            }

            if (SettingsManager::getAll()['redis_handler'] && $rServers[SERVER_ID]['is_main']) {
                foreach (ConnectionTracker::getEnded() as $rConnection) {
                    if (is_array($rConnection)) {
                        if (!in_array($rConnection['container'], array('ts', 'hls', 'rtmp')) && time() - $rConnection['hls_last_read'] < 300) {
                            $rClose = false;
                        } else {
                            $rClose = true;
                        }

                        if ($rClose) {
                            echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                            ConnectionTracker::closeConnection($rConnection, false, false);
                            $rRedisDelete['count']++;
                            $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                            $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                            $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                            $rRedisDelete['uuid'][] = $rConnection['uuid'];

                            if ($rConnection['proxy_id']) {
                                $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                            }
                        }
                    }
                }

                if ($rRedisDelete['count'] >= 1000) {
                    $rRedisDelete = $this->processDeletions($rRedisDelete, $rRedisDelete['stream']);
                }
            }

            foreach ($rUsers as $rUserID => $rConnections) {
                $rActiveCount = 0;
                $rMaxConnections = $rMaxConnectionsArray[$rUserID];
                $rIsRestreamer = ($rRestreamerArray[$rUserID] ?: false);

                foreach ($rConnections as $rKey => $rConnection) {
                    if ($rConnection['server_id'] == SERVER_ID || SettingsManager::getAll()['redis_handler']) {
                        if (is_null($rConnection['exp_date']) || $rConnection['exp_date'] >= $rStartTime) {
                            $rTotalTime = $rStartTime - $rConnection['date_start'];

                            if (!($rAutoKick != 0 && $rAutoKick <= $rTotalTime) || $rIsRestreamer) {
                                if ($rConnection['container'] == 'hls') {
                                    if (30 <= $rStartTime - $rConnection['hls_last_read'] || $rConnection['hls_end'] == 1) {
                                        echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                                        ConnectionTracker::closeConnection($rConnection, false, false);

                                        if (SettingsManager::getAll()['redis_handler']) {
                                            $rRedisDelete['count']++;
                                            $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                                            $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                                            $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                                            $rRedisDelete['uuid'][] = $rConnection['uuid'];

                                            if ($rConnection['user_id']) {
                                                $rRedisDelete['server_lines'][$rConnection['server_id']][] = $rConnection['uuid'];
                                            }

                                            if ($rConnection['proxy_id']) {
                                                $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                                            }
                                        } else {
                                            $rDelete[$rConnection['server_id']][] = $rConnection['uuid'];
                                            $rDeleteStream[$rConnection['stream_id']] = $rDelete[$rConnection['server_id']];
                                        }
                                    }
                                } else {
                                    if ($rConnection['container'] != 'rtmp') {
                                        if ($rConnection['server_id'] == SERVER_ID) {
                                            $rIsRunning = ProcessManager::isRunning($rConnection['pid'], 'php-fpm');
                                        } else {
                                            if ($rConnection['date_start'] <= $rServers[$rConnection['server_id']]['last_check_ago'] - 1 && 0 < count($rPHPPIDs[$rConnection['server_id']])) {
                                                $rIsRunning = in_array(intval($rConnection['pid']), $rPHPPIDs[$rConnection['server_id']]);
                                            } else {
                                                $rIsRunning = true;
                                            }
                                        }

                                        if (($rConnection['hls_end'] == 1 && ($rStartTime - $rConnection['hls_last_read']) >= 300) || !$rIsRunning) {
                                            echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                                            ConnectionTracker::closeConnection($rConnection, false, false);

                                            if (SettingsManager::getAll()['redis_handler']) {
                                                $rRedisDelete['count']++;
                                                $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                                                $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                                                $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                                                $rRedisDelete['uuid'][] = $rConnection['uuid'];

                                                if ($rConnection['user_id']) {
                                                    $rRedisDelete['server_lines'][$rConnection['server_id']][] = $rConnection['uuid'];
                                                }

                                                if ($rConnection['proxy_id']) {
                                                    $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                                                }
                                            } else {
                                                $rDelete[$rConnection['server_id']][] = $rConnection['uuid'];
                                                $rDeleteStream[$rConnection['stream_id']] = $rDelete[$rConnection['server_id']];
                                            }
                                        }
                                    }
                                }
                            } else {
                                echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                                ConnectionTracker::closeConnection($rConnection, false, false);

                                if (SettingsManager::getAll()['redis_handler']) {
                                    $rRedisDelete['count']++;
                                    $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                                    $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                                    $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                                    $rRedisDelete['uuid'][] = $rConnection['uuid'];

                                    if ($rConnection['user_id']) {
                                        $rRedisDelete['server_lines'][$rConnection['server_id']][] = $rConnection['uuid'];
                                    }

                                    if ($rConnection['proxy_id']) {
                                        $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                                    }
                                } else {
                                    $rDelete[$rConnection['server_id']][] = $rConnection['uuid'];
                                    $rDeleteStream[$rConnection['stream_id']] = $rDelete[$rConnection['server_id']];
                                }
                            }
                        } else {
                            echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                            ConnectionTracker::closeConnection($rConnection, false, false);

                            if (SettingsManager::getAll()['redis_handler']) {
                                $rRedisDelete['count']++;
                                $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                                $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                                $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                                $rRedisDelete['uuid'][] = $rConnection['uuid'];

                                if ($rConnection['user_id']) {
                                    $rRedisDelete['server_lines'][$rConnection['server_id']][] = $rConnection['uuid'];
                                }

                                if ($rConnection['proxy_id']) {
                                    $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                                }
                            } else {
                                $rDelete[$rConnection['server_id']][] = $rConnection['uuid'];
                                $rDeleteStream[$rConnection['stream_id']] = $rDelete[$rConnection['server_id']];
                            }
                        }
                    }

                    if (!$rConnection['hls_end']) {
                        $rActiveCount++;
                    }
                }

                if ($rServers[SERVER_ID]['is_main'] && 0 < $rMaxConnections && $rMaxConnections < $rActiveCount) {
                    foreach ($rConnections as $rConnection) {
                        if (!$rConnection['hls_end']) {
                            echo 'Close connection: ' . $rConnection['uuid'] . "\n";
                            ConnectionTracker::closeConnection($rConnection, false, false);

                            if (SettingsManager::getAll()['redis_handler']) {
                                $rRedisDelete['count']++;
                                $rRedisDelete['line'][$rConnection['identity']][] = $rConnection['uuid'];
                                $rRedisDelete['stream'][$rConnection['stream_id']][] = $rConnection['uuid'];
                                $rRedisDelete['server'][$rConnection['server_id']][] = $rConnection['uuid'];
                                $rRedisDelete['uuid'][] = $rConnection['uuid'];

                                if ($rConnection['user_id']) {
                                    $rRedisDelete['server_lines'][$rConnection['server_id']][] = $rConnection['uuid'];
                                }

                                if ($rConnection['proxy_id']) {
                                    $rRedisDelete['proxy'][$rConnection['proxy_id']][] = $rConnection['uuid'];
                                }
                            } else {
                                $rDelete[$rConnection['server_id']][] = $rConnection['uuid'];
                                $rDeleteStream[$rConnection['stream_id']] = $rDelete[$rConnection['server_id']];
                            }

                            $rActiveCount--;
                        }

                        if ($rActiveCount >= $rMaxConnections) {
                            break;
                        }
                    }
                }

                if (SettingsManager::getAll()['redis_handler'] && 1000 <= $rRedisDelete['count']) {
                    $rRedisDelete = $this->processDeletions($rRedisDelete, $rRedisDelete['stream']);
                } else {
                    if (!SettingsManager::getAll()['redis_handler'] && count($rDelete) >= 1000) {
                        $rDelete = $this->processDeletions($rDelete, $rDeleteStream);
                    }
                }
            }

            if (SettingsManager::getAll()['redis_handler'] && 0 < $rRedisDelete['count']) {
                $this->processDeletions($rRedisDelete, $rRedisDelete['stream']);
            } else {
                if (!SettingsManager::getAll()['redis_handler'] && count($rDelete) > 0) {
                    $this->processDeletions($rDelete, $rDeleteStream);
                }
            }
        }

        $rConnectionSpeeds = glob(DIVERGENCE_TMP_PATH . '*');

        if (count($rConnectionSpeeds) > 0) {
            $rBitrates = [];

            if (SettingsManager::getAll()['redis_handler']) {
                $rStreamMap = [];

                $db->query('SELECT `stream_id`, `bitrate` FROM `streams_servers` WHERE `server_id` = ? AND `bitrate` IS NOT NULL;', SERVER_ID);
                foreach ($db->get_rows() as $rRow) {
                    $bitrate = intval($rRow['bitrate']);
                    if ($bitrate > 0) {
                        $rStreamMap[intval($rRow['stream_id'])] = intval($bitrate / 8 * 0.92);
                    }
                }

                $rUUIDs = [];
                foreach ($rConnectionSpeeds as $rConnectionSpeed) {
                    if (!empty($rConnectionSpeed)) {
                        $rUUIDs[] = basename($rConnectionSpeed);
                    }
                }

                if (count($rUUIDs) > 0) {
                    $rConnections = array_map(
                        static fn($v) => ($v !== false) ? igbinary_unserialize($v) : null,
                        RedisManager::instance()->mGet($rUUIDs)
                    );

                    foreach ($rConnections as $rConnection) {
                        if (!is_array($rConnection)) {
                            continue;
                        }

                        $uuid = $rConnection['uuid'];
                        $streamId = intval($rConnection['stream_id']);

                        if (!isset($rStreamMap[$streamId])) {
                            continue;
                        }

                        $rBitrates[$uuid] = $rStreamMap[$streamId];
                    }
                }

                unset($rStreamMap);
            } else {
                $db->query('SELECT `lines_live`.`uuid`, `streams_servers`.`bitrate` FROM `lines_live` LEFT JOIN `streams_servers` ON `lines_live`.`stream_id` = `streams_servers`.`stream_id` AND `lines_live`.`server_id` = `streams_servers`.`server_id` WHERE `lines_live`.`server_id` = ?;', SERVER_ID);

                foreach ($db->get_rows() as $rRow) {
                    $bitrate = intval($rRow['bitrate']);
                    if ($bitrate > 0) {
                        $rBitrates[$rRow['uuid']] = intval($bitrate / 8 * 0.92);
                    }
                }
            }

            if (!SettingsManager::getAll()['redis_handler']) {
                $rUUIDMap = array();
                $db->query('SELECT `uuid`, `activity_id` FROM `lines_live`;');
                foreach ($db->get_rows() as $rRow) {
                    $rUUIDMap[$rRow['uuid']] = $rRow['activity_id'];
                }
            }

            $rLiveQuery = $rDivergenceUpdate = [];

            foreach ($rConnectionSpeeds as $rConnectionSpeed) {
                if (empty($rConnectionSpeed)) {
                    continue;
                }

                $rUUID = basename($rConnectionSpeed);
                $rAverageSpeed = intval(file_get_contents($rConnectionSpeed));

                if (!isset($rBitrates[$rUUID]) || $rBitrates[$rUUID] <= 0) {
                    $rDivergenceUpdate[] = "('" . $rUUID . "', 0)";

                    if (!SettingsManager::getAll()['redis_handler'] && isset($rUUIDMap[$rUUID])) {
                        $rLiveQuery[] = '(' . $rUUIDMap[$rUUID] . ', 0)';
                    }

                    continue;
                }

                $realBitrate = $rBitrates[$rUUID];
                $rDivergence = intval(($rAverageSpeed - $realBitrate) / $realBitrate * 100);

                if ($rDivergence > 0) {
                    $rDivergence = 0;
                }

                $rDivergenceUpdate[] = "('" . $rUUID . "', " . abs($rDivergence) . ')';

                if (!SettingsManager::getAll()['redis_handler'] && isset($rUUIDMap[$rUUID])) {
                    $rLiveQuery[] = '(' . $rUUIDMap[$rUUID] . ', ' . abs($rDivergence) . ')';
                }
            }

            if (count($rDivergenceUpdate) > 0) {
                $rUpdateQuery = implode(',', $rDivergenceUpdate);
                $db->query('INSERT INTO `lines_divergence`(`uuid`,`divergence`) VALUES ' . $rUpdateQuery . ' ON DUPLICATE KEY UPDATE `divergence`=VALUES(`divergence`);');
            }

            if (!SettingsManager::getAll()['redis_handler'] && count($rLiveQuery) > 0) {
                $rLiveQueryStr = implode(',', $rLiveQuery);
                $db->query('INSERT INTO `lines_live`(`activity_id`,`divergence`) VALUES ' . $rLiveQueryStr . ' ON DUPLICATE KEY UPDATE `divergence`=VALUES(`divergence`);');
            }

            shell_exec('rm -f ' . DIVERGENCE_TMP_PATH . '*');
        }

        if ($rServers[SERVER_ID]['is_main']) {
            if (SettingsManager::getAll()['redis_handler']) {
                $rDeleteQuery = "DELETE FROM `lines_divergence` WHERE `uuid` NOT IN ('" . implode("','", $rLiveKeys) . "');";
                for ($rRetry = 0; $rRetry < 3; $rRetry++) {
                    if ($db->query($rDeleteQuery)) {
                        break;
                    }
                    usleep(200000);
                }
            } else {
                $db->query('DELETE FROM `lines_divergence` WHERE `uuid` NOT IN (SELECT `uuid` FROM `lines_live`);');
            }
        }

        if ($rServers[SERVER_ID]['is_main']) {
            $db->query('DELETE FROM `lines_live` WHERE `uuid` IS NULL;');
        }
    }
}