add vendor

vendor/github.com/siddontang/ledisdb/store/rocksdb/snapshot.go

@@ -0,0 +1,39 @@
+// +build rocksdb
+
+package rocksdb
+
+// #cgo LDFLAGS: -lrocksdb
+// #include "rocksdb/c.h"
+import "C"
+
+import (
+	"github.com/siddontang/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()
+}