private function _possiblyClearCache()
{
$cleaningFactor = $this->_context->get(tubepress_api_options_Names::CACHE_CLEANING_FACTOR);
$cleaningFactor = intval($cleaningFactor);
/*
* Handle cleaning factor.
*/
if ($cleaningFactor > 0 && rand(1, $cleaningFactor) === 1) {
$this->_apiCache->flush();
}
}
/**
* Performs all actions that are needed to update database structure.
*
* @return boolean True if the system updated successfully and false
* otherwise.
*/
public function run()
{
$current_version = $this->getDatabaseVersion();
if (!preg_match("/^([0-9]{1,2}\\.){2}[0-9]{1,2}(-(alpha|beta|rc)\\.[0-9]+)?\$/", $current_version)) {
$this->errors[] = getlocal('The current version ({0}) is unknown or wrong formated', array($current_version));
return false;
}
if (version_compare($current_version, MIBEW_VERSION) == 0) {
$this->log[] = getlocal('The database is already up to date');
return true;
}
if (version_compare($current_version, self::MIN_VERSION) < 0) {
$this->errors[] = getlocal('You can update the system only from {0} and later versions. The current version is {1}', array(self::MIN_VERSION, $current_version));
return false;
}
try {
// Perform incremental updates
foreach (Utils::getUpdates($this) as $version => $method) {
if (version_compare($version, $current_version) <= 0) {
// Skip updates to lower versions.
continue;
}
// Run the update
if (!$method()) {
$this->errors[] = getlocal('Cannot update to {0}', array($version));
return false;
}
// Store new version number in the database. With this info
// we can rerun the updating process if one of pending
// updates fails.
if (!$this->setDatabaseVersion($version)) {
return false;
} else {
$this->log[] = getlocal('Updated to {0}', array($version));
}
$current_version = $version;
}
} catch (\Exception $e) {
// Something went wrong
$this->errors[] = getlocal('Update failed: {0}', array($e->getMessage()));
return false;
}
// Use the version from the PHP's constant as the current database
// version.
if ($this->setDatabaseVersion(MIBEW_VERSION)) {
return false;
}
// Clean up the cache
$this->cache->flush();
return true;
}
/**
* clear all keys and data from the cache.
*
* @return boolean True if the cache was successfully cleared, false otherwise
*/
public function clear()
{
return $this->pool->flush();
}
