访问量同比，当old为0时，忽略告警

go.mod

@@ -18,7 +18,6 @@ require (
 	github.com/onsi/gomega v1.4.3 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a // indirect
 	github.com/robfig/cron v0.0.0-20180505203441-b41be1df6967
-	github.com/smartystreets/goconvey v0.0.0-20180222194500-ef6db91d284a
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 )

service/alarm/operator.go

@@ -92,6 +92,9 @@ func limitCompareSame(alter string, old string, current string) bool {
 func compareSame(alter string, old string, current string) bool {
 	cf := parseToFloat(current)
 	of := parseToFloat(old)
+	if of == 0 {		//jingbo.wang, 忽略of为0的场景
+		return false
+	}
 	return (cf-of)/of > parseToFloat(alter)
 }