// Deletes a range of log entries. The range is inclusive.
func (m *MDBStore) DeleteRange(minIdx, maxIdx uint64) error {
// Start write txn
return m.env.Update(func(txn *lmdb.Txn) (err error) {
txn.RawRead = true
s := lmdbscan.New(txn, m.dbLogs)
defer s.Close()
s.Set(uint64ToBytes(minIdx), nil, lmdb.SetKey)
for s.Scan() {
if maxIdx < bytesToUint64(s.Key()) {
break
}
if err := s.Cursor().Del(0); err != nil {
return err
}
}
return s.Err()
})
}
func upgrade1To2LMDB(qs *QuadStore) error {
fmt.Println("Upgrading v1 to v2...")
err := qs.env.Update(func(tx *lmdb.Txn) (err error) {
fmt.Println("Upgrading DB", logDB)
s := lmdbscan.New(tx, qs.logDBI)
defer s.Close()
for s.Scan() {
var delta graph.Delta
err := json.Unmarshal(s.Val(), &delta)
if err != nil {
return err
}
newd := deltaToProto(delta)
data, err := newd.Marshal()
if err != nil {
return err
}
err = tx.Put(qs.logDBI, s.Key(), data, 0)
if err != nil {
return err
}
}
return s.Err()
})
if err != nil {
return err
}
err = qs.env.Update(func(tx *lmdb.Txn) (err error) {
fmt.Println("Upgrading DB", nodeDB)
s := lmdbscan.New(tx, qs.nodeDBI)
defer s.Close()
for s.Scan() {
var vd proto.NodeData
err := json.Unmarshal(s.Val(), &vd)
if err != nil {
return err
}
data, err := vd.Marshal()
if err != nil {
return err
}
err = tx.Put(qs.nodeDBI, s.Key(), data, 0)
if err != nil {
return err
}
}
return s.Err()
})
if err != nil {
return err
}
for _, db := range [4]string{string(spoDB), string(ospDB), string(posDB), string(cpsDB)} {
err = qs.env.Update(func(tx *lmdb.Txn) (err error) {
fmt.Println("Upgrading DB", db)
dbi := qs.dbis[db]
s := lmdbscan.New(tx, dbi)
defer s.Close()
for s.Scan() {
var h proto.HistoryEntry
err := json.Unmarshal(s.Val(), &h)
if err != nil {
return err
}
data, err := h.Marshal()
if err != nil {
return err
}
err = tx.Put(dbi, s.Key(), data, 0)
if err != nil {
return err
}
}
return s.Err()
})
if err != nil {
return err
}
return nil
}
return nil
}