Fix FetchSnapshot in more recent Tarantool versions

Author: viciious

anon_slave_test.go

@@ -156,8 +156,8 @@ func TestAnonSlaveSubscribeExpectedReplicaSetUUIDFail(t *testing.T) {
 
 	ver, err := tntBoxVersion(box)
 	require.NoError(err)
-	if ver >= version2_8_0 && ver < version2_9_0 {
-		t.Skip("Tarantool 2.8 returns an empty replicaset UUID, skip check")
+	if ver >= version2_8_0 && ver < version2_9_0 || ver >= version2_11_0 {
+		t.Skip("Tarantool 2.8/2.11 returns an empty replicaset UUID, skip check")
 	}
 
 	s, _ := NewAnonSlave(box.Listen, Options{

const.go

@@ -32,6 +32,7 @@ const (
 	KeyLSN            = uint(0x03)
 	KeyTimestamp      = uint(0x04)
 	KeySchemaID       = uint(0x05)
+	KeyVersionID      = uint(0x06)
 	KeySpaceNo        = uint(0x10)
 	KeyIndexNo        = uint(0x11)
 	KeyLimit          = uint(0x12)
@@ -378,7 +379,8 @@ const (
 	// 2.3.1 is min version for anonymous replication
 	version2_3_1 = uint32(131841) // VersionID(2, 3, 1)
 	// Add box.info.replication_anon
-	version2_5_1 = uint32(132353) // VersionID(2, 5, 1)
-	version2_8_0 = uint32(133120) // VersionID(2, 8, 0)
-	version2_9_0 = uint32(133376) // VersionID(2, 9, 0)
+	version2_5_1  = uint32(132353) // VersionID(2, 5, 1)
+	version2_8_0  = uint32(133120) // VersionID(2, 8, 0)
+	version2_9_0  = uint32(133376) // VersionID(2, 9, 0)
+	version2_11_0 = uint32(133888) // VersionID(2, 11, 0)
 )

fetch_snapshot.go

@@ -1,5 +1,7 @@
 package tarantool
 
+import "github.com/tinylib/msgp/msgp"
+
 // FetchSnapshot is the FETCH_SNAPSHOT command
 type FetchSnapshot struct{}
 
@@ -12,6 +14,9 @@ func (q *FetchSnapshot) GetCommandID() uint {
 // MarshalMsg implements msgp.Marshaler
 func (q *FetchSnapshot) MarshalMsg(b []byte) (o []byte, err error) {
 	o = b
+	o = msgp.AppendMapHeader(o, 1)
+	o = msgp.AppendUint(o, KeyVersionID)
+	o = msgp.AppendUint(o, uint(version2_9_0))
 	return o, nil
 }