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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
use Piwik\Config;
use Piwik\Piwik;
/**
* Simple cache mechanism used in Tracker to avoid requesting settings from mysql on every request
*
* @package Piwik
* @subpackage Piwik_Tracker
*/
class Piwik_Tracker_Cache
{
/**
* Public for tests only
* @var Piwik_CacheFile
*/
static public $trackerCache = null;
static protected function getInstance()
{
if (is_null(self::$trackerCache)) {
$ttl = Config::getInstance()->Tracker['tracker_cache_file_ttl'];
self::$trackerCache = new Piwik_CacheFile('tracker', $ttl);
}
return self::$trackerCache;
}
/**
* Returns array containing data about the website: goals, URLs, etc.
*
* @param int $idSite
* @return array
*/
static function getCacheWebsiteAttributes($idSite)
{
$idSite = (int)$idSite;
$cache = self::getInstance();
if (($cacheContent = $cache->get($idSite)) !== false) {
return $cacheContent;
}
Piwik_Tracker::initCorePiwikInTrackerMode();
// save current user privilege and temporarily assume super user privilege
$isSuperUser = Piwik::isUserIsSuperUser();
Piwik::setUserIsSuperUser();
$content = array();
Piwik_PostEvent('Common.fetchWebsiteAttributes', array(&$content, $idSite));
// restore original user privilege
Piwik::setUserIsSuperUser($isSuperUser);
// if nothing is returned from the plugins, we don't save the content
// this is not expected: all websites are expected to have at least one URL
if (!empty($content)) {
$cache->set($idSite, $content);
}
return $content;
}
/**
* Clear general (global) cache
*/
static public function clearCacheGeneral()
{
self::getInstance()->delete('general');
}
/**
* Returns contents of general (global) cache.
* If the cache file tmp/cache/tracker/general.php does not exist yet, create it
*
* @return array
*/
static public function getCacheGeneral()
{
$cache = self::getInstance();
$cacheId = 'general';
$expectedRows = 3;
if (($cacheContent = $cache->get($cacheId)) !== false
&& count($cacheContent) == $expectedRows
) {
return $cacheContent;
}
Piwik_Tracker::initCorePiwikInTrackerMode();
$cacheContent = array(
'isBrowserTriggerEnabled' => Piwik_ArchiveProcessor_Rules::isBrowserTriggerEnabled(),
'lastTrackerCronRun' => Piwik_GetOption('lastTrackerCronRun'),
'currentLocationProviderId' => Piwik_UserCountry_LocationProvider::getCurrentProviderId(),
);
self::setCacheGeneral($cacheContent);
return $cacheContent;
}
/**
* Store data in general (global cache)
*
* @param mixed $value
* @return bool
*/
static public function setCacheGeneral($value)
{
$cache = self::getInstance();
$cacheId = 'general';
$cache->set($cacheId, $value);
return true;
}
/**
* Regenerate Tracker cache files
*
* @param array|int $idSites Array of idSites to clear cache for
*/
static public function regenerateCacheWebsiteAttributes($idSites = array())
{
if (!is_array($idSites)) {
$idSites = array($idSites);
}
foreach ($idSites as $idSite) {
self::deleteCacheWebsiteAttributes($idSite);
self::getCacheWebsiteAttributes($idSite);
}
}
/**
* Delete existing Tracker cache
*
* @param string $idSite (website ID of the site to clear cache for
*/
static public function deleteCacheWebsiteAttributes($idSite)
{
$idSite = (int)$idSite;
self::getInstance()->delete($idSite);
}
/**
* Deletes all Tracker cache files
*/
static public function deleteTrackerCache()
{
self::getInstance()->deleteAll();
}
}
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