135 lines
4.2 KiB
PHP
135 lines
4.2 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, Control Yourself, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('LACONICA')) { exit(1); }
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require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
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// We keep 5 pages of inbox notices in memcache, +1 for pagination check
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define('INBOX_CACHE_WINDOW', 101);
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class Notice_inbox extends Memcached_DataObject
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{
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###START_AUTOCODE
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/* the code below is auto generated do not remove the above tag */
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public $__table = 'notice_inbox'; // table name
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public $user_id; // int(4) primary_key not_null
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public $notice_id; // int(4) primary_key not_null
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public $created; // datetime() not_null
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public $source; // tinyint(1) default_1
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/* Static get */
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function staticGet($k,$v=null)
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{ return Memcached_DataObject::staticGet('Notice_inbox',$k,$v); }
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/* the code above is auto generated do not remove the tag below */
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###END_AUTOCODE
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function stream($user_id, $offset=0, $limit=20, $since_id=0, $before_id=0, $since=null)
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{
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$cache = common_memcache();
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if (empty($cache) ||
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$since_id != 0 || $before_id != 0 || !is_null($since) ||
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($offset + $limit) > INBOX_CACHE_WINDOW) {
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return Notice_inbox::_streamDirect($user_id, $offset, $limit, $since_id, $before_id, $since);
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}
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$idkey = common_cache_key('notice_inbox:by_user:'.$user_id);
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$idstr = $cache->get($idkey);
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if (!empty($idstr)) {
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// Cache hit! Woohoo!
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$window = explode(',', $idstr);
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$ids = array_slice($window, $offset, $limit);
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return $ids;
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}
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$laststr = common_cache_key($idkey.';last');
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if (!empty($laststr)) {
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$window = explode(',', $laststr);
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$last_id = $window[0];
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$new_ids = Notice_inbox::_streamDirect($user_id, 0, INBOX_CACHE_WINDOW,
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$last_id, null, null);
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$new_window = array_merge($new_ids, $window);
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$new_windowstr = implode(',', $new_window);
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$result = $cache->set($idkey, $new_windowstr);
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$result = $cache->set($idkey . ';last', $new_windowstr);
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$ids = array_slice($new_window, $offset, $limit);
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return $ids;
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}
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$window = Notice_inbox::_streamDirect($user_id, 0, INBOX_CACHE_WINDOW,
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null, null, null);
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$windowstr = implode(',', $new_window);
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$result = $cache->set($idkey, $windowstr);
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$result = $cache->set($idkey . ';last', $windowstr);
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$ids = array_slice($window, $offset, $limit);
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return $ids;
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}
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function _streamDirect($user_id, $offset, $limit, $since_id, $before_id, $since)
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{
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$inbox = new Notice_inbox();
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$inbox->user_id = $user_id;
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if ($since_id != 0) {
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$inbox->whereAdd('notice_id > ' . $since_id);
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}
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if ($before_id != 0) {
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$inbox->whereAdd('notice_id < ' . $before_id);
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}
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if (!is_null($since)) {
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$inbox->whereAdd('created > \'' . date('Y-m-d H:i:s', $since) . '\'');
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}
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$inbox->orderBy('notice_id DESC');
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if (!is_null($offset)) {
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$inbox->limit($offset, $limit);
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}
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$ids = array();
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if ($inbox->find()) {
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while ($inbox->fetch()) {
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$ids[] = $inbox->notice_id;
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}
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}
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return $ids;
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}
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}
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