3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2008, 2009, StatusNet, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
22 require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
24 class Memcached_DataObject extends DB_DataObject
26 function &staticGet($cls, $k, $v=null)
36 $i = Memcached_DataObject::getcached($cls, $k, $v);
40 $i = DB_DataObject::factory($cls);
44 $result = $i->get($k, $v);
54 function &pkeyGet($cls, $kv)
56 $i = Memcached_DataObject::multicache($cls, $kv);
61 foreach ($kv as $k => $v) {
75 $result = parent::insert();
79 function update($orig=null)
81 if (is_object($orig) && $orig instanceof Memcached_DataObject) {
82 $orig->decache(); # might be different keys
84 $result = parent::update($orig);
93 $this->decache(); # while we still have the values!
94 return parent::delete();
97 static function memcache() {
98 return common_memcache();
101 static function cacheKey($cls, $k, $v) {
102 if (is_object($cls) || is_object($k) || is_object($v)) {
103 $e = new Exception();
104 common_log(LOG_ERR, __METHOD__ . ' object in param: ' .
105 str_replace("\n", " ", $e->getTraceAsString()));
107 return common_cache_key(strtolower($cls).':'.$k.':'.$v);
110 static function getcached($cls, $k, $v) {
111 $c = Memcached_DataObject::memcache();
115 return $c->get(Memcached_DataObject::cacheKey($cls, $k, $v));
121 global $_DB_DATAOBJECT;
122 if (!isset($_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"])) {
123 $this->databaseStructure();
126 return $_DB_DATAOBJECT['INI'][$this->_database][$this->__table."__keys"];
131 $c = $this->memcache();
137 $types = $this->keyTypes();
139 foreach ($types as $key => $type) {
142 $pval[] = $this->$key;
144 $c->set($this->cacheKey($this->tableName(), $key, $this->$key), $this);
147 # XXX: should work for both compound and scalar pkeys
148 $pvals = implode(',', $pval);
149 $pkeys = implode(',', $pkey);
150 $c->set($this->cacheKey($this->tableName(), $pkeys, $pvals), $this);
156 $c = $this->memcache();
162 $types = $this->keyTypes();
164 foreach ($types as $key => $type) {
167 $pval[] = $this->$key;
169 $c->delete($this->cacheKey($this->tableName(), $key, $this->$key));
172 # should work for both compound and scalar pkeys
173 # XXX: comma works for now but may not be safe separator for future keys
174 $pvals = implode(',', $pval);
175 $pkeys = implode(',', $pkey);
176 $c->delete($this->cacheKey($this->tableName(), $pkeys, $pvals));
180 function multicache($cls, $kv)
183 $c = Memcached_DataObject::memcache();
187 $pkeys = implode(',', array_keys($kv));
188 $pvals = implode(',', array_values($kv));
189 return $c->get(Memcached_DataObject::cacheKey($cls, $pkeys, $pvals));
193 function getSearchEngine($table)
195 require_once INSTALLDIR.'/lib/search_engines.php';
196 static $search_engine;
197 if (!isset($search_engine)) {
198 if (Event::handle('GetSearchEngine', array($this, $table, &$search_engine))) {
199 if ('mysql' === common_config('db', 'type')) {
200 $type = common_config('search', 'type');
201 if ($type == 'like') {
202 $search_engine = new MySQLLikeSearch($this, $table);
203 } else if ($type == 'fulltext') {
204 $search_engine = new MySQLSearch($this, $table);
206 throw new ServerException('Unknown search type: ' . $type);
209 $search_engine = new PGSearch($this, $table);
213 return $search_engine;
216 static function cachedQuery($cls, $qry, $expiry=3600)
218 $c = Memcached_DataObject::memcache();
224 $key_part = common_keyize($cls).':'.md5($qry);
225 $ckey = common_cache_key($key_part);
226 $stored = $c->get($ckey);
228 return new ArrayWrapper($stored);
234 while ($inst->fetch()) {
235 $cached[] = clone($inst);
238 $c->set($ckey, $cached, MEMCACHE_COMPRESSED, $expiry);
239 return new ArrayWrapper($cached);
242 // We overload so that 'SET NAMES "utf8"' is called for
247 global $_DB_DATAOBJECT;
249 $sum = $this->_getDbDsnMD5();
251 if (!empty($_DB_DATAOBJECT['CONNECTIONS'][$sum]) &&
252 !PEAR::isError($_DB_DATAOBJECT['CONNECTIONS'][$sum])) {
258 $result = parent::_connect();
260 if ($result && !$exists) {
261 $DB = &$_DB_DATAOBJECT['CONNECTIONS'][$this->_database_dsn_md5];
262 if (common_config('db', 'type') == 'mysql' &&
263 common_config('db', 'utf8')) {
264 $conn = $DB->connection;
266 if ($DB instanceof DB_mysqli) {
267 mysqli_set_charset($conn, 'utf8');
268 } else if ($DB instanceof DB_mysql) {
269 mysql_set_charset('utf8', $conn);
278 // XXX: largely cadged from DB_DataObject
280 function _getDbDsnMD5()
282 if ($this->_database_dsn_md5) {
283 return $this->_database_dsn_md5;
286 $dsn = $this->_getDbDsn();
288 if (is_string($dsn)) {
291 /// support array based dsn's
292 $sum = md5(serialize($dsn));
300 global $_DB_DATAOBJECT;
302 if (empty($_DB_DATAOBJECT['CONFIG'])) {
303 DB_DataObject::_loadConfig();
306 $options = &$_DB_DATAOBJECT['CONFIG'];
308 // if the databse dsn dis defined in the object..
310 $dsn = isset($this->_database_dsn) ? $this->_database_dsn : null;
314 if (!$this->_database) {
315 $this->_database = isset($options["table_{$this->__table}"]) ? $options["table_{$this->__table}"] : null;
318 if ($this->_database && !empty($options["database_{$this->_database}"])) {
319 $dsn = $options["database_{$this->_database}"];
320 } else if (!empty($options['database'])) {
321 $dsn = $options['database'];
326 throw new Exception("No database name / dsn found anywhere");