func (db *DB) _raw_ssttlat_put(ns byte, key []byte, ttlat uint64) bool {
if ttlat == 0 {
return true
}
key = skv.RawNsKeyConcat(ns, key)
batch := new(leveldb.Batch)
//
if prev := db.RawGet(skv.RawTtlEntry(key)); prev.Status == skv.ReplyOK {
if prev_ttlat := dbutil.BytesToUint64(prev.Bytes()); prev_ttlat != ttlat {
batch.Delete(skv.RawTtlQueue(key, prev_ttlat))
}
}
//
batch.Put(skv.RawTtlQueue(key, ttlat), []byte{})
//
batch.Put(skv.RawTtlEntry(key), dbutil.Uint64ToBytes(ttlat))
if err := db.ldb.Write(batch, nil); err != nil {
return false
}
return true
}
func (db *DB) ttl_worker() {
go func() {
for {
ls := db._raw_ssttlat_range(0, dbutil.MetaTimeNow(), _ttl_worker_limit).Hash()
for _, v := range ls {
batch := new(leveldb.Batch)
if dbutil.BytesToUint64(db.RawGet(skv.RawTtlEntry(v.Key[9:])).Bytes()) == v.Uint64() {
batch.Delete(skv.RawTtlEntry(v.Key[9:]))
switch v.Key[9] {
case skv.NsObjectEntry:
db.ObjectDel(string(v.Key[10:]))
case skv.NsKvEntry:
batch.Delete(v.Key[9:])
}
}
batch.Delete(v.Key)
db.ldb.Write(batch, nil)
}
if uint64(len(ls)) < _ttl_worker_limit {
time.Sleep(_ttl_worker_sleep)
}
}
}()
}
func (db *DB) _raw_ssttl_get(ns byte, key []byte) *skv.Reply {
key = skv.RawNsKeyConcat(ns, key)
rpl, ttl := skv.NewReply(""), int64(0)
if ttlat := dbutil.BytesToUint64(db.RawGet(skv.RawTtlEntry(key)).Bytes()); ttlat > 0 {
ttl = (dbutil.MetaTimeParse(ttlat).UnixNano() - time.Now().UTC().UnixNano()) / 1e6
}
if ttl < 0 {
ttl = 0
}
rpl.Data = append(rpl.Data, []byte(strconv.FormatInt(ttl, 10)))
return rpl
}
