Revert regex processor to allow empty values

Assume empty field/tag value is not useful, fix test
Prevent new tag from being overwritten
2018-07-05 18:02:05 -06:00 · 2018-07-05 11:13:36 -06:00 · 2018-07-05 10:24:00 -06:00
1 changed files with 9 additions and 3 deletions
@@ -67,7 +67,10 @@ func (r *Regex) Apply(in ...telegraf.Metric) []telegraf.Metric {
 	for _, metric := range in {
 		for _, converter := range r.Tags {
 			if value, ok := metric.GetTag(converter.Key); ok {
-				metric.AddTag(r.convert(converter, value))
+				k, v := r.convert(converter, value)
+				if k != "" {
+					metric.AddTag(k, v)
+				}
 			}
 		}

@@ -75,11 +78,14 @@ func (r *Regex) Apply(in ...telegraf.Metric) []telegraf.Metric {
 			if value, ok := metric.GetField(converter.Key); ok {
 				switch value := value.(type) {
 				case string:
+					k, _ := r.convert(converter, value)
+					if k != "" {
 						metric.AddField(r.convert(converter, value))
 					}
 				}
 			}
 		}
+	}

 	return in
 }
Author	SHA1	Message	Date
Greg Linton	71a93ed6b1	Revert regex processor to allow empty values	2018-07-05 18:02:05 -06:00
Greg Linton	a7fb1c280f	Assume empty field/tag value is not useful, fix test	2018-07-05 11:13:36 -06:00
Greg Linton	2e724d8d02	Prevent new tag from being overwritten Resolves #4374	2018-07-05 10:24:00 -06:00