/**
* Append the given notice to the given user's inbox.
* Caching updates are managed for the inbox itself.
*
* If the notice is already in this inbox, the second
* add will be silently dropped.
*
* @param int @user_id
* @param int $notice_id
* @return boolean success
*/
static function insertNotice($user_id, $notice_id)
{
// Going straight to the DB rather than trusting our caching
// during an update. Note: not using DB_DataObject::staticGet,
// which is unsafe to use directly (in-process caching causes
// memory leaks, which accumulate in queue processes).
$inbox = new Inbox();
if (!$inbox->get('user_id', $user_id)) {
$inbox = Inbox::initialize($user_id);
}
if (empty($inbox)) {
return false;
}
$ids = $inbox->unpack();
if (in_array(intval($notice_id), $ids)) {
// Already in there, we probably re-ran some inbox adds
// due to an error. Skip the dupe silently.
return true;
}
$result = $inbox->query(sprintf('UPDATE inbox ' . 'set notice_ids = concat(cast(0x%08x as binary(4)), ' . 'substr(notice_ids, 1, %d)) ' . 'WHERE user_id = %d', $notice_id, 4 * (self::MAX_NOTICES - 1), $user_id));
if ($result) {
self::blow('inbox:user_id:%d', $user_id);
}
return $result;
}