etcdserver: remove redundant len check in health check

From the Go specification [1]:

  "1. For a nil slice, the number of iterations is 0."

`len` returns 0 if the slice or map is nil [2]. Therefore, checking
`len(v) > 0` around a loop is unnecessary.

[1]: https://go.dev/ref/spec#For_range
[2]: https://pkg.go.dev/builtin#len

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This commit is contained in:
Eng Zer Jun 2023-10-13 18:39:38 +08:00
parent d0d0c33338
commit 867faa1924
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@ -143,27 +143,25 @@ func getSerializableFlag(r *http.Request) bool {
func checkAlarms(lg *zap.Logger, srv ServerHealth, excludedAlarms AlarmSet) Health {
h := Health{Health: "true"}
as := srv.Alarms()
if len(as) > 0 {
for _, v := range as {
alarmName := v.Alarm.String()
if _, found := excludedAlarms[alarmName]; found {
lg.Debug("/health excluded alarm", zap.String("alarm", v.String()))
continue
}
h.Health = "false"
switch v.Alarm {
case pb.AlarmType_NOSPACE:
h.Reason = "ALARM NOSPACE"
case pb.AlarmType_CORRUPT:
h.Reason = "ALARM CORRUPT"
default:
h.Reason = "ALARM UNKNOWN"
}
lg.Warn("serving /health false due to an alarm", zap.String("alarm", v.String()))
return h
for _, v := range srv.Alarms() {
alarmName := v.Alarm.String()
if _, found := excludedAlarms[alarmName]; found {
lg.Debug("/health excluded alarm", zap.String("alarm", v.String()))
continue
}
h.Health = "false"
switch v.Alarm {
case pb.AlarmType_NOSPACE:
h.Reason = "ALARM NOSPACE"
case pb.AlarmType_CORRUPT:
h.Reason = "ALARM CORRUPT"
default:
h.Reason = "ALARM UNKNOWN"
}
lg.Warn("serving /health false due to an alarm", zap.String("alarm", v.String()))
return h
}
return h