[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/mvcc/util.go b/vendor/github.com/coreos/etcd/mvcc/util.go
new file mode 100644
index 0000000..8a0df0b
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/mvcc/util.go
@@ -0,0 +1,56 @@
+// Copyright 2016 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mvcc
+
+import (
+ "encoding/binary"
+
+ "github.com/coreos/etcd/mvcc/backend"
+ "github.com/coreos/etcd/mvcc/mvccpb"
+)
+
+func UpdateConsistentIndex(be backend.Backend, index uint64) {
+ tx := be.BatchTx()
+ tx.Lock()
+ defer tx.Unlock()
+
+ var oldi uint64
+ _, vs := tx.UnsafeRange(metaBucketName, consistentIndexKeyName, nil, 0)
+ if len(vs) != 0 {
+ oldi = binary.BigEndian.Uint64(vs[0])
+ }
+
+ if index <= oldi {
+ return
+ }
+
+ bs := make([]byte, 8)
+ binary.BigEndian.PutUint64(bs, index)
+ tx.UnsafePut(metaBucketName, consistentIndexKeyName, bs)
+}
+
+func WriteKV(be backend.Backend, kv mvccpb.KeyValue) {
+ ibytes := newRevBytes()
+ revToBytes(revision{main: kv.ModRevision}, ibytes)
+
+ d, err := kv.Marshal()
+ if err != nil {
+ plog.Fatalf("cannot marshal event: %v", err)
+ }
+
+ be.BatchTx().Lock()
+ be.BatchTx().UnsafePut(keyBucketName, ibytes, d)
+ be.BatchTx().Unlock()
+}