/**
* For statsd, we use a different logic than for other loggers:
* in the name of the KPI we embed some variable data, such as f.e.
* content-class name. This allows better grouping and filtering of data
* in the Graphite console.
*
* @see ezperformancelogger.ini
*
* We cache internally prefix and postfix for optimal performances
*/
public static function transformVarName($var, $default = null)
{
if (self::$prefix === null || self::$postfix === null) {
$strip = eZPerfLoggerINI::variable('StatsdSettings', 'RemoveEmptyTokensInVariable') == 'enabled';
foreach (array(eZPerfLoggerINI::variable('StatsdSettings', 'VariablePrefix'), eZPerfLoggerINI::variable('StatsdSettings', 'VariablePostfix')) as $i => $string) {
if (strpos($string, '$') !== false) {
$tokens = explode('.', $string);
foreach ($tokens as $j => &$token) {
if (strlen($token) && $token[0] == '$') {
$token = str_replace('.', '_', eZPerfLogger::getModuleData(substr($token, 1), $default));
if ($strip && $token == '') {
unset($tokens[$j]);
}
}
}
$string = implode('.', $tokens);
}
if ($i) {
self::$postfix = $string;
} else {
self::$prefix = $string;
}
}
}
return self::$prefix . $var . self::$postfix;
}
