// freeMemOrSwap is an abstraction of FreeMemory and FreeSwap, which measures
// if the desired resource has a quantity free above the amount specified
func freeMemOrSwap(input string, swapOrMem string) (int, string, error) {
amount, units, err := chkutil.SeparateByteUnits(input)
if err != nil {
log.WithFields(log.Fields{
"err": err.Error(),
}).Fatal("Couldn't separate string into a scalar and units")
}
var actualAmount int
switch strings.ToLower(swapOrMem) {
case "memory":
actualAmount, err = memstatus.FreeMemory(units)
case "swap":
actualAmount, err = memstatus.FreeSwap(units)
default:
log.Fatalf("Invalid option passed to freeMemoOrSwap: %s", swapOrMem)
}
if err != nil {
return 1, "", err
} else if actualAmount > amount {
return errutil.Success()
}
msg := "Free " + swapOrMem + " lower than defined threshold"
actualString := fmt.Sprint(actualAmount) + units
return errutil.GenericError(msg, input, []string{actualString})
}
func (chk FreeSwap) New(params []string) (chkutil.Check, error) {
if len(params) != 1 {
return chk, errutil.ParameterLengthError{1, params}
}
_, _, err := chkutil.SeparateByteUnits(params[0])
if err != nil {
return chk, errutil.ParameterTypeError{params[0], "amount"}
}
chk.amount = params[0]
return chk, nil
}