2008-09-26 17:09:41 +01:00
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<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, 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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2008-09-26 17:18:24 +01:00
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require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
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2008-09-26 17:09:41 +01:00
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2009-01-22 18:13:26 +00:00
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class Memcached_DataObject extends DB_DataObject
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2008-09-26 17:09:41 +01:00
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{
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2008-12-23 19:33:23 +00:00
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function &staticGet($cls, $k, $v=null)
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{
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2008-12-23 19:19:07 +00:00
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if (is_null($v)) {
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$v = $k;
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# XXX: HACK!
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$i = new $cls;
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$keys = $i->keys();
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$k = $keys[0];
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unset($i);
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}
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$i = Memcached_DataObject::getcached($cls, $k, $v);
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if ($i) {
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return $i;
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} else {
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$i = DB_DataObject::staticGet($cls, $k, $v);
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if ($i) {
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$i->encache();
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}
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return $i;
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}
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}
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2008-10-02 15:47:15 +01:00
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2008-12-23 19:33:23 +00:00
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function &pkeyGet($cls, $kv)
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{
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2008-12-23 19:19:07 +00:00
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$i = Memcached_DataObject::multicache($cls, $kv);
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if ($i) {
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return $i;
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} else {
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$i = new $cls();
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foreach ($kv as $k => $v) {
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$i->$k = $v;
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}
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if ($i->find(true)) {
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$i->encache();
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} else {
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2008-12-23 19:21:29 +00:00
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$i = null;
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2008-12-23 19:19:07 +00:00
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}
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2008-12-10 23:35:03 +00:00
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return $i;
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2008-12-23 19:19:07 +00:00
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}
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}
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2008-10-02 15:47:15 +01:00
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2008-12-23 19:33:23 +00:00
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function insert()
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{
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2008-12-23 19:19:07 +00:00
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$result = parent::insert();
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return $result;
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:33:23 +00:00
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function update($orig=null)
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{
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2008-12-23 19:19:07 +00:00
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if (is_object($orig) && $orig instanceof Memcached_DataObject) {
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$orig->decache(); # might be different keys
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}
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$result = parent::update($orig);
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if ($result) {
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$this->encache();
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}
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return $result;
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:33:23 +00:00
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function delete()
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{
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2008-12-23 19:19:07 +00:00
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$this->decache(); # while we still have the values!
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return parent::delete();
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:19:07 +00:00
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static function memcache() {
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return common_memcache();
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:19:07 +00:00
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static function cacheKey($cls, $k, $v) {
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return common_cache_key(strtolower($cls).':'.$k.':'.$v);
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:19:07 +00:00
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static function getcached($cls, $k, $v) {
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$c = Memcached_DataObject::memcache();
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if (!$c) {
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return false;
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} else {
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return $c->get(Memcached_DataObject::cacheKey($cls, $k, $v));
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}
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}
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2008-09-26 17:09:41 +01:00
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2008-12-23 19:33:23 +00:00
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function keyTypes()
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{
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2008-12-23 19:19:07 +00:00
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global $_DB_DATAOBJECT;
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2008-09-26 17:09:41 +01:00
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if (!isset($_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"])) {
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2008-12-23 19:19:07 +00:00
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$this->databaseStructure();
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2008-09-26 17:09:41 +01:00
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}
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2008-12-23 19:19:07 +00:00
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return $_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"];
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:33:23 +00:00
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function encache()
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{
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2008-12-23 19:19:07 +00:00
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$c = $this->memcache();
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if (!$c) {
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return false;
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} else {
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$pkey = array();
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2009-01-22 18:13:26 +00:00
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$pval = array();
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2008-12-23 19:19:07 +00:00
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$types = $this->keyTypes();
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ksort($types);
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foreach ($types as $key => $type) {
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if ($type == 'K') {
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$pkey[] = $key;
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$pval[] = $this->$key;
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} else {
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$c->set($this->cacheKey($this->tableName(), $key, $this->$key), $this);
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}
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}
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# XXX: should work for both compound and scalar pkeys
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$pvals = implode(',', $pval);
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$pkeys = implode(',', $pkey);
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$c->set($this->cacheKey($this->tableName(), $pkeys, $pvals), $this);
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}
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}
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2009-01-22 18:13:26 +00:00
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2008-12-23 19:33:23 +00:00
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function decache()
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{
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2008-12-23 19:19:07 +00:00
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$c = $this->memcache();
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if (!$c) {
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return false;
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} else {
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$pkey = array();
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2009-01-22 18:13:26 +00:00
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$pval = array();
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2008-12-23 19:19:07 +00:00
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$types = $this->keyTypes();
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ksort($types);
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foreach ($types as $key => $type) {
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if ($type == 'K') {
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$pkey[] = $key;
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$pval[] = $this->$key;
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} else {
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$c->delete($this->cacheKey($this->tableName(), $key, $this->$key));
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}
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}
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# should work for both compound and scalar pkeys
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# XXX: comma works for now but may not be safe separator for future keys
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$pvals = implode(',', $pval);
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$pkeys = implode(',', $pkey);
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$c->delete($this->cacheKey($this->tableName(), $pkeys, $pvals));
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}
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}
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2008-10-02 15:47:15 +01:00
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2008-12-23 19:33:23 +00:00
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function multicache($cls, $kv)
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{
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2008-12-23 19:19:07 +00:00
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ksort($kv);
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$c = Memcached_DataObject::memcache();
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if (!$c) {
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return false;
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} else {
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$pkeys = implode(',', array_keys($kv));
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$pvals = implode(',', array_values($kv));
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return $c->get(Memcached_DataObject::cacheKey($cls, $pkeys, $pvals));
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}
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}
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2008-11-20 21:50:41 +00:00
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2008-12-23 19:33:23 +00:00
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function getSearchEngine($table)
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{
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2008-11-23 20:16:16 +00:00
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require_once INSTALLDIR.'/lib/search_engines.php';
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2008-11-20 21:50:41 +00:00
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static $search_engine;
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if (!isset($search_engine)) {
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2008-11-23 20:16:16 +00:00
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$connected = false;
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2008-11-20 21:50:41 +00:00
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if (common_config('sphinx', 'enabled')) {
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$search_engine = new SphinxSearch($this, $table);
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2008-11-23 20:16:16 +00:00
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$connected = $search_engine->is_connected();
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}
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// unable to connect to sphinx' search daemon
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if (!$connected) {
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if ('mysql' === common_config('db', 'type')) {
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$search_engine = new MySQLSearch($this, $table);
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} else {
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$search_engine = new PGSearch($this, $table);
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}
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2008-11-20 21:50:41 +00:00
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}
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}
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return $search_engine;
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}
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2009-01-22 18:13:26 +00:00
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static function cachedQuery($cls, $qry, $expiry=3600)
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{
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$c = Memcached_DataObject::memcache();
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if (!$c) {
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$inst = new $cls();
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$inst->query($qry);
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return $cls;
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}
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$key_part = common_keyize($cls).':'.md5($qry);
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$ckey = common_cache_key($key_part);
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$stored = $c->get($ckey);
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if ($stored) {
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return new ArrayWrapper($stored);
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}
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$inst = new $cls();
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$result = $inst->query($qry);
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if (!$result) {
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return $inst;
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}
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$cached = array();
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while ($inst->fetch()) {
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$cached[] = clone($inst);
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}
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$inst->free();
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$c->set($ckey, $cached, MEMCACHE_COMPRESSED, $expiry);
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return ArrayWrapper($cached);
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}
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2008-09-26 17:09:41 +01:00
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}
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