Esempio n. 1
0
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
}
Esempio n. 2
0
File: ttl.go Progetto: lessos/lessdb
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)
			}
		}
	}()
}
Esempio n. 3
0
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
}