statsd: If parsing a value to int fails, try to float and cast to int

fixes #556

plugins/inputs/statsd/statsd.go

@@ -337,11 +337,16 @@ func (s *Statsd) parseStatsdLine(line string) error {
 			}
 			m.floatvalue = v
 		case "c", "s":
+			var v int64
 			v, err := strconv.ParseInt(pipesplit[0], 10, 64)
 			if err != nil {
+				v2, err2 := strconv.ParseFloat(pipesplit[0], 64)
+				if err2 != nil {
 					log.Printf("Error: parsing value to int64: %s\n", line)
 					return errors.New("Error Parsing statsd line")
 				}
+				v = int64(v2)
+			}
 			// If a sample rate is given with a counter, divide value by the rate
 			if m.samplerate != 0 && m.mtype == "c" {
 				v = int64(float64(v) / m.samplerate)