add simple validation in set_stats_name

2016-07-25 11:07:13 -04:00
parent 8390894e0b
commit c1dd8a3dea
1 changed files with 3 additions and 0 deletions
--- a/cassandra/metrics.py
+++ b/cassandra/metrics.py
@@ -187,6 +187,9 @@ class Metrics(object):
        Default is 'cassandra-<num>'.
        """

+        if stats_name in scales._Stats.stats:
+            raise ValueError('"{0}" already exists in stats.'.format(stats_name))
+
        stats = scales._Stats.stats[self.stats_name]
        del scales._Stats.stats[self.stats_name]
        self.stats_name = stats_name