/**
* Return description of configuration parameters
*
* This function caches its result so that it may be called
* multiple times without performance overhead
*
* @returns array key=>
* array('defaultValue'=>value, // if not present,
* // the param is required
* 'relativeTo'=>path, // for directories
* 'validator'=>validator // name of validator to use)
* @see configuration.example.php for more information
*/
protected static function getParameterDescription()
{
if (self::$parameterDescription === null) {
self::$parameterDescription = FajrConfigOptions::getParameterDescription();
}
return self::$parameterDescription;
}
/**
* Load configuration file, if it was not loaded previously.
*
* This means that second and subsequent calls attempt to load
* the configuration again only if previous attempts have failed.
*
* Otherwise, cached configuration data is used.
*
* If the loading fails, isConfigured() will return false.
*
* @return void
*/
public static function load()
{
if (self::isConfigured()) {
return;
}
$parameters = self::getParameterDescription();
$configurationFileName = self::getConfigurationFileName();
if (!file_exists($configurationFileName)) {
// Leave fajr unconfigured, index.php will then show nice error message
// to the user
return;
}
// Don't suppress errors so parse errors are reported
// TODO(anty): use yaml for configuration
$result = (include $configurationFileName);
if (!is_array($result)) {
throw new Exception('Konfiguračný súbor nevrátil pole');
}
$config = ConfigUtils::parseAndValidateConfiguration($parameters, $result);
foreach ($config['AIS2.ServerList'] as $key => $server) {
if ($key !== $server->getServerName()) {
throw new Exception("Nesedí meno servera v konfiguracii AIS2.ServerList");
}
}
self::$config = $config;
}
