diff options
Diffstat (limited to '_darcs/pristine/classes/Memcached_DataObject.php')
| -rw-r--r-- | _darcs/pristine/classes/Memcached_DataObject.php | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/_darcs/pristine/classes/Memcached_DataObject.php b/_darcs/pristine/classes/Memcached_DataObject.php new file mode 100644 index 000000000..7a33e158d --- /dev/null +++ b/_darcs/pristine/classes/Memcached_DataObject.php @@ -0,0 +1,194 @@ +<?php +/* + * Laconica - a distributed open-source microblogging tool + * Copyright (C) 2008, Controlez-Vous, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +if (!defined('LACONICA')) { exit(1); } + +require_once INSTALLDIR.'/classes/Memcached_DataObject.php'; + +class Memcached_DataObject extends DB_DataObject +{ + function &staticGet($cls, $k, $v=NULL) { + if (is_null($v)) { + $v = $k; + # XXX: HACK! + $i = new $cls; + $keys = $i->keys(); + $k = $keys[0]; + unset($i); + } + $i = Memcached_DataObject::getcached($cls, $k, $v); + if ($i) { + return $i; + } else { + $i = DB_DataObject::staticGet($cls, $k, $v); + if ($i) { + $i->encache(); + } + return $i; + } + } + + function &pkeyGet($cls, $kv) { + $i = Memcached_DataObject::multicache($cls, $kv); + if ($i) { + return $i; + } else { + $i = new $cls(); + foreach ($kv as $k => $v) { + $i->$k = $v; + } + if ($i->find(true)) { + $i->encache(); + } else { + $i = NULL; + } + return $i; + } + } + + function insert() { + $result = parent::insert(); + return $result; + } + + function update($orig=NULL) { + if (is_object($orig) && $orig instanceof Memcached_DataObject) { + $orig->decache(); # might be different keys + } + $result = parent::update($orig); + if ($result) { + $this->encache(); + } + return $result; + } + + function delete() { + $this->decache(); # while we still have the values! + return parent::delete(); + } + + static function memcache() { + return common_memcache(); + } + + static function cacheKey($cls, $k, $v) { + return common_cache_key(strtolower($cls).':'.$k.':'.$v); + } + + static function getcached($cls, $k, $v) { + $c = Memcached_DataObject::memcache(); + if (!$c) { + return false; + } else { + return $c->get(Memcached_DataObject::cacheKey($cls, $k, $v)); + } + } + + function keyTypes() { + global $_DB_DATAOBJECT; + if (!isset($_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"])) { + $this->databaseStructure(); + + } + return $_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"]; + } + + function encache() { + $c = $this->memcache(); + if (!$c) { + return false; + } else { + $pkey = array(); + $pval = array(); + $types = $this->keyTypes(); + ksort($types); + foreach ($types as $key => $type) { + if ($type == 'K') { + $pkey[] = $key; + $pval[] = $this->$key; + } else { + $c->set($this->cacheKey($this->tableName(), $key, $this->$key), $this); + } + } + # XXX: should work for both compound and scalar pkeys + $pvals = implode(',', $pval); + $pkeys = implode(',', $pkey); + $c->set($this->cacheKey($this->tableName(), $pkeys, $pvals), $this); + } + } + + function decache() { + $c = $this->memcache(); + if (!$c) { + return false; + } else { + $pkey = array(); + $pval = array(); + $types = $this->keyTypes(); + ksort($types); + foreach ($types as $key => $type) { + if ($type == 'K') { + $pkey[] = $key; + $pval[] = $this->$key; + } else { + $c->delete($this->cacheKey($this->tableName(), $key, $this->$key)); + } + } + # should work for both compound and scalar pkeys + # XXX: comma works for now but may not be safe separator for future keys + $pvals = implode(',', $pval); + $pkeys = implode(',', $pkey); + $c->delete($this->cacheKey($this->tableName(), $pkeys, $pvals)); + } + } + + function multicache($cls, $kv) { + ksort($kv); + $c = Memcached_DataObject::memcache(); + if (!$c) { + return false; + } else { + $pkeys = implode(',', array_keys($kv)); + $pvals = implode(',', array_values($kv)); + return $c->get(Memcached_DataObject::cacheKey($cls, $pkeys, $pvals)); + } + } + + function getSearchEngine($table) { + require_once INSTALLDIR.'/lib/search_engines.php'; + static $search_engine; + if (!isset($search_engine)) { + $connected = false; + if (common_config('sphinx', 'enabled')) { + $search_engine = new SphinxSearch($this, $table); + $connected = $search_engine->is_connected(); + } + + // unable to connect to sphinx' search daemon + if (!$connected) { + if ('mysql' === common_config('db', 'type')) { + $search_engine = new MySQLSearch($this, $table); + } else { + $search_engine = new PGSearch($this, $table); + } + } + } + return $search_engine; + } +} |