ledisdb/store/rocksdb/snapshot.go

40 lines
759 B
Go

// +build rocksdb
package rocksdb
// #cgo LDFLAGS: -lrocksdb
// #include "rocksdb/c.h"
import "C"
import (
"git.internal/re/ledisdb/store/driver"
)
type Snapshot struct {
db *DB
snap *C.rocksdb_snapshot_t
readOpts *ReadOptions
iteratorOpts *ReadOptions
}
func (s *Snapshot) Get(key []byte) ([]byte, error) {
return s.db.get(s.readOpts, key)
}
func (s *Snapshot) GetSlice(key []byte) (driver.ISlice, error) {
return s.db.getSlice(s.readOpts, key)
}
func (s *Snapshot) NewIterator() driver.IIterator {
it := new(Iterator)
it.it = C.rocksdb_create_iterator(s.db.db, s.db.iteratorOpts.Opt)
return it
}
func (s *Snapshot) Close() {
C.rocksdb_release_snapshot(s.db.db, s.snap)
s.iteratorOpts.Close()
s.readOpts.Close()
}