/**
* Returns the site identifier.
*
* @return string
*/
public static function get_site_identifier()
{
if (is_null(self::$siteidentifier)) {
$factory = cache_factory::instance();
$config = $factory->create_config_instance();
self::$siteidentifier = $config->get_site_identifier();
}
return self::$siteidentifier;
}
/**
* Returns the site identifier.
*
* @return string
*/
public static function get_site_identifier()
{
global $CFG;
if (!is_null(self::$siteidentifier)) {
return self::$siteidentifier;
}
// If site identifier hasn't been collected yet attempt to get it from the cache config.
$factory = cache_factory::instance();
// If the factory is initialising then we don't want to try to get it from the config or we risk
// causing the cache to enter an infinite initialisation loop.
if (!$factory->is_initialising()) {
$config = $factory->create_config_instance();
self::$siteidentifier = $config->get_site_identifier();
}
if (is_null(self::$siteidentifier)) {
// If the site identifier is still null then config isn't aware of it yet.
// We'll see if the CFG is loaded, and if not we will just use unknown.
// It's very important here that we don't use get_config. We don't want an endless cache loop!
if (!empty($CFG->siteidentifier)) {
self::$siteidentifier = self::update_site_identifier($CFG->siteidentifier);
} else {
// It's not being recorded in MUC's config and the config data hasn't been loaded yet.
// Likely we are initialising.
return 'unknown';
}
}
return self::$siteidentifier;
}