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Caching implementation for objects

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git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@8745 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
dragan-dan 2011-08-10 17:47:59 +00:00
parent 1b47a294d3
commit 70a69ff4fe
18 changed files with 709 additions and 322 deletions
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12
modules/session/queries/getExpiredSessions.xml Normal file
View file

@ -0,0 +1,12 @@
<query id="getExpiredSession" action="select">
<tables>
<table name="session" />
</tables>
<columns>
<column name="session_key" />
</columns>
<conditions>
<condition operation="less" column="expired" default="curdate()" notnull="notnull" />
</conditions>
</query>

74
modules/session/session.controller.php
View file

@ -23,11 +23,21 @@
function write($session_key, $val) {
if(!$session_key || !$this->session_started) return;
$oCacheHandler = &CacheHandler::getInstance('object');
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$cache_vars = $oCacheHandler->get($cache_key);
}
$args->session_key = $session_key;
$output = executeQuery('session.getSession', $args);
$session_info = $output->data;
if($cache_vars) $session_info = $cache_vars;
else {
$output = executeQuery('session.getSession', $args);
$session_info = $output->data;
}
//if ip has changed delete the session from cache and db
if($session_info->session_key == $session_key && $session_info->ipaddress != $_SERVER['REMOTE_ADDR']) {
if($oCacheHandler->isSupport()) $oCacheHandler->delete($cache_key);
executeQuery('session.deleteSession', $args);
return true;
}
@ -46,16 +56,53 @@
} else {
$args->member_srl = 0;
}
if($session_info->session_key) $output = executeQuery('session.updateSession', $args);
else $output = executeQuery('session.insertSession', $args);
$args->ipaddress = $_SERVER['REMOTE_ADDR'];
$args->last_update = date("YmdHis", time());
$diff = $args->last_update - $cache_vars->last_update;
//verify if session values have changed
if($val == $cache_vars->val){
// if more than 5 minutes passed than modify the db session also
if($diff > 300){
//put session into cache
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$oCacheHandler->put($cache_key,$args);
}
//put session into db
if($session_info->session_key) $output = executeQuery('session.updateSession', $args);
}
else {
//put session into cache
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$oCacheHandler->put($cache_key,$args);
}
}
}
else {
//put session into cache
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$oCacheHandler->put($cache_key,$args);
}
//put session into db
if($session_info->session_key) $output = executeQuery('session.updateSession', $args);
else $output = executeQuery('session.insertSession', $args);
}
return true;
}
function destroy($session_key) {
if(!$session_key || !$this->session_started) return;
//remove session from cache
$oCacheHandler = &CacheHandler::getInstance('object');
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$oCacheHandler->delete($cache_key);
}
//remove session from db
$args->session_key = $session_key;
executeQuery('session.deleteSession', $args);
return true;
@ -63,6 +110,17 @@
function gc($maxlifetime) {
if(!$this->session_started) return;
$expired_sessions = executeQueryArray('session.getExpiredSessions');
if($expired_session){
foreach ($expired_sessions as $session_key){
//remove session from cache
$oCacheHandler = &CacheHandler::getInstance('object');
if($oCacheHandler->isSupport()) {
$cache_key = 'object:'.$session_key;
$oCacheHandler->delete($cache_key);
}
}
}
executeQuery('session.gcSession');
return true;
}

40
modules/session/session.model.php
View file

@ -19,23 +19,31 @@
function read($session_key) {
if(!$session_key || !$this->session_started) return;
$oCacheHandler = &CacheHandler::getInstance('object');
if($oCacheHandler->isSupport()){
$cache_key = 'object:'.$session_key;
$output->data = $oCacheHandler->get($cache_key);
}
if(!$output->data) {
$args->session_key = $session_key;
$columnList = array('session_key', 'cur_mid', 'val');
$output = executeQuery('session.getSession', $args, $columnList);
// Confirm there is a table created if read error occurs
if(!$output->toBool()) {
$oDB = &DB::getInstance();
if(!$oDB->isTableExists('session')) $oDB->createTableByXmlFile($this->module_path.'schemas/session.xml');
if(!$oDB->isColumnExists("session","cur_mid")) $oDB->addColumn('session',"cur_mid","varchar",128);
$output = executeQuery('session.getSession', $args);
}
// Check if there is a table created in case there is no "cur_mid" value in the sessions information
if(!isset($output->data->cur_mid)) {
$oDB = &DB::getInstance();
if(!$oDB->isColumnExists("session","cur_mid")) $oDB->addColumn('session',"cur_mid","varchar",128);
}
$args->session_key = $session_key;
$columnList = array('session_key', 'cur_mid', 'val');
$output = executeQuery('session.getSession', $args, $columnList);
// Confirm there is a table created if read error occurs
if(!$output->toBool()) {
$oDB = &DB::getInstance();
if(!$oDB->isTableExists('session')) $oDB->createTableByXmlFile($this->module_path.'schemas/session.xml');
if(!$oDB->isColumnExists("session","cur_mid")) $oDB->addColumn('session',"cur_mid","varchar",128);
$output = executeQuery('session.getSession', $args);
}
// Check if there is a table created in case there is no "cur_mid" value in the sessions information
if(!isset($output->data->cur_mid)) {
$oDB = &DB::getInstance();
if(!$oDB->isColumnExists("session","cur_mid")) $oDB->addColumn('session',"cur_mid","varchar",128);
}
}
return $output->data->val;
}