mirror of
https://github.com/EGroupware/egroupware.git
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132 lines
3.6 KiB
PHP
132 lines
3.6 KiB
PHP
<?php
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/**
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* Notifications: push via notification polling
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage ajax
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* @author Ralf Becker <rb@stylite.de>
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* @version $Id$
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*/
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use EGroupware\Api;
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use EGroupware\Api\Json;
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/**
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* Class to push via notification polling and other json requests from client-side
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*/
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class notifications_push implements Json\PushBackend
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{
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const APP = 'notifications';
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/**
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* Notification table in SQL database
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*/
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const TABLE = 'egw_notificationpopup';
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/**
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* Notification type
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*/
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const TYPE = 'push';
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/**
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* Reference to global DB object
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*
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* @var Api\Db
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*/
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public static $db;
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public static function get()
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{
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$already_send =& Api\Cache::getSession(__CLASS__, 'already_send');
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$max_id = Api\Cache::getInstance(__CLASS__, 'max_id');
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if (!isset($already_send))
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{
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self::cleanup_push_msgs();
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if (!isset($max_id))
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{
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$max_id = (int)self::$db->select(self::TABLE, 'MAX(notify_id)', false, __LINE__, __FILE__, false, '', self::APP)->fetchColumn();
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Api\Cache::setInstance(__CLASS__, 'max_id', $max_id);
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}
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$already_send = $max_id;
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}
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elseif (isset($max_id) && $max_id > $already_send)
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{
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$response = Json\Response::get();
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foreach(self::$db->select(self::TABLE, '*', array(
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'account_id' => array(0, $GLOBALS['egw_info']['user']['account_id']),
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'notify_type' => self::TYPE,
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'notify_id > '.(int)$already_send,
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), __LINE__, __FILE__, false, 'ORDER BY notify_id ASC', self::APP) as $row)
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{
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$message = json_decode($row['notify_message'], true);
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//error_log(__METHOD__."() already_send=$already_send, message=".array2string($message));
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if (is_array($message) && method_exists($response, $message['method']))
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{
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call_user_func_array(array($response, $message['method']), (array)$message['data']);
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}
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$already_send = $row['notify_id'];
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}
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}
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//error_log(__METHOD__."() max_id=$max_id, already_sent=$already_send");
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}
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/**
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* Adds any type of data to the message
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*
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* @param int|null $account_id account_id to push message too, 0 for broadcast
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* or null for curent session (we can only send to current user)
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* @param string $key
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* @param mixed $data
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*
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* This function doesn't throw exception regarding if user availability anymore,
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* if you need to check if user is online or not please use this function
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* Api\Session::notifications_active($account_id) in a clause.
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*/
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public function addGeneric($account_id, $key, $data)
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{
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if (!isset($account_id)) $account_id = $GLOBALS['egw_info']['user']['account_id'];
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self::$db->insert(self::TABLE, array(
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'account_id' => $account_id,
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'notify_type' => self::TYPE,
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'notify_message' => json_encode(array(
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'method' => $key,
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'data' => $data,
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)),
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), false, __LINE__, __FILE__, self::APP);
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// cache highest id, to not poll database
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Api\Cache::setInstance(__CLASS__, 'max_id', self::$db->get_last_insert_id(self::TABLE, 'notify_id'));
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self::cleanup_push_msgs();
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}
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/**
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* Delete push messges older then our heartbeat-limit (poll frequency of notifications)
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*/
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protected static function cleanup_push_msgs()
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{
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if (($ts = self::$db->from_unixtime(Api\Session::heartbeat_limit())))
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{
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self::$db->delete(self::TABLE, array(
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'notify_type' => self::TYPE,
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'notify_created < '.$ts,
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), __LINE__, __FILE__, self::APP);
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}
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}
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/**
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* Init our static variables eg. database object
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*/
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public static function init_static()
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{
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self::$db =& $GLOBALS['egw']->db;
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}
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}
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notifications_push::init_static();
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