func (op *Uint64MergeOperator) PartialMerge(key, leftOperand, rightOperand []byte) ([]byte, bool) {
keyStr := string(key)
mergeType := getKeyMergeType(keyStr)
var mergeFunc func(o1, o2 uint64) uint64
switch strings.ToLower(mergeType) {
case "add":
mergeFunc = uint64Add
case "max":
mergeFunc = uint64Max
case "min":
mergeFunc = uint64Min
default:
log.Warnf("unkown merge type: %v, key: %v\n", mergeType, string(key))
return nil, false
}
var ret []byte
o1, err := BytesToUint64(leftOperand)
if err != nil {
return ret, false
}
o2, err := BytesToUint64(rightOperand)
if err != nil {
return ret, false
}
newVal := mergeFunc(o1, o2)
return Uint64ToBytes(newVal), true
}
func (op *Uint64MergeOperator) FullMerge(key, existingValue []byte, operands [][]byte) ([]byte, bool) {
keyStr := string(key)
mergeType := getKeyMergeType(keyStr)
var mergeFunc func(o1, o2 uint64) uint64
switch strings.ToLower(mergeType) {
case "add":
mergeFunc = uint64Add
case "max":
mergeFunc = uint64Max
case "min":
mergeFunc = uint64Min
default:
log.Warnf("unkown merge type: %v, key: %v\n", mergeType, string(key))
return nil, false
}
var ret []byte
val, err := BytesToUint64(existingValue)
if err != nil {
log.WarnErrorf(err, "existing value corruption. %v", existingValue)
val = 0
// return ret, false
}
for _, bytes := range operands {
tmp, err := BytesToUint64(bytes)
if err != nil {
return ret, false
}
val = mergeFunc(val, tmp)
}
ret = Uint64ToBytes(val)
return ret, true
}