*/
class ProfilerOutputStats extends ProfilerOutput {
+ /**
+ * Normalize a metric key for StatsD
+ *
+ * Replace occurences of '::' with dots and any other non-alphabetic
+ * characters with underscores. Combine runs of dots or underscores.
+ * Then trim leading or trailing dots or underscores.
+ *
+ * @param string $key
+ * @since 1.26
+ */
+ private static function normalizeMetricKey( $key ) {
+ $key = str_replace( '::', '.', $key );
+ $key = preg_replace( '/[^a-z.]+/i', '_', $key );
+ $key = trim( $key, '_.' );
+ return str_replace( array( '._', '_.' ), '.', $key );
+ }
+
/**
* Flush profiling data to the current profiling context's stats buffer.
*
* @param array $stats
*/
public function log( array $stats ) {
+ if ( isset( $this->params['prefix'] ) ) {
+ $prefix = self::normalizeMetricKey( $this->params['prefix'] );
+ } else {
+ $prefix = '';
+ }
+
$contextStats = $this->collector->getContext()->getStats();
foreach ( $stats as $stat ) {
- // Sanitize the key
- $key = str_replace( '::', '.', $stat['name'] );
- $key = preg_replace( '/[^a-z.]+/i', '_', $key );
- $key = trim( $key, '_.' );
- $key = str_replace( array( '._', '_.' ), '.', $key );
+ $key = self::normalizeMetricKey( "{$prefix}.{$stat['name']}" );
// Convert fractional seconds to whole milliseconds
$cpu = round( $stat['cpu'] * 1000 );