func (l *L1L2BatchOrca) Add(req common.SetRequest) error {
metrics.IncCounter(MetricCmdAdd)
//log.Println("add", string(req.Key))
// Add in L2 first, since it has the larger state
metrics.IncCounter(MetricCmdAddL2)
err := l.l2.Add(req)
if err != nil {
// A key already existing is not an error per se, it's a part of the
// functionality of the add command to respond with a "not stored" in
// the form of a ErrKeyExists. Hence no error metrics.
if err == common.ErrKeyExists {
metrics.IncCounter(MetricCmdAddNotStoredL2)
metrics.IncCounter(MetricCmdAddNotStored)
return err
}
// otherwise we have a real error on our hands
metrics.IncCounter(MetricCmdAddErrorsL2)
metrics.IncCounter(MetricCmdAddErrors)
return err
}
metrics.IncCounter(MetricCmdAddStoredL2)
// Replace the entry in L1.
req.Quiet = false
metrics.IncCounter(MetricCmdAddReplaceL1)
if err := l.l1.Replace(req); err != nil {
if err == common.ErrKeyNotFound {
// For a replace not stored in L1, there's no problem.
// There is no hot data to replace
metrics.IncCounter(MetricCmdAddReplaceNotStoredL1)
} else {
metrics.IncCounter(MetricCmdAddReplaceErrorsL1)
metrics.IncCounter(MetricCmdAddErrors)
return err
}
} else {
metrics.IncCounter(MetricCmdAddReplaceStoredL1)
}
metrics.IncCounter(MetricCmdAddStored)
return l.res.Add(req.Opaque, req.Quiet)
}
func (l *L1L2BatchOrca) Set(req common.SetRequest) error {
metrics.IncCounter(MetricCmdSet)
//log.Println("set", string(req.Key))
// Try L2 first
metrics.IncCounter(MetricCmdSetL2)
err := l.l2.Set(req)
// If we fail to set in L2, don't do anything in L1
if err != nil {
metrics.IncCounter(MetricCmdSetErrorsL2)
metrics.IncCounter(MetricCmdSetErrors)
return err
}
metrics.IncCounter(MetricCmdSetSuccessL2)
// Replace the entry in L1.
req.Quiet = false
metrics.IncCounter(MetricCmdSetReplaceL1)
if err := l.l1.Replace(req); err != nil {
if err == common.ErrKeyNotFound {
// For a replace not stored in L1, there's no problem.
// There is no hot data to replace
metrics.IncCounter(MetricCmdSetReplaceNotStoredL1)
} else {
metrics.IncCounter(MetricCmdSetReplaceErrorsL1)
metrics.IncCounter(MetricCmdSetErrors)
return err
}
} else {
metrics.IncCounter(MetricCmdSetReplaceStoredL1)
}
metrics.IncCounter(MetricCmdSetSuccess)
return l.res.Set(req.Opaque, req.Quiet)
}