Upgrade vitess to v1.2.1

go.mod

@@ -1,57 +1,14 @@
 module gopkg.in/src-d/go-mysql-server.v0
 
 require (
-	github.com/BurntSushi/toml v0.3.1 // indirect
-	github.com/CAFxX/gcnotifier v0.0.0-20170518020117-39b0596a2da3 // indirect
-	github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895 // indirect
-	github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f // indirect
-	github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da // indirect
-	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
-	github.com/boltdb/bolt v1.3.1
-	github.com/cespare/xxhash v1.1.0 // indirect
-	github.com/circonus-labs/circonus-gometrics v2.2.4+incompatible // indirect
-	github.com/circonus-labs/circonusllhist v0.0.0-20180430145027-5eb751da55c6 // indirect
-	github.com/go-ole/go-ole v1.2.1 // indirect
-	github.com/gogo/protobuf v1.1.1 // indirect
-	github.com/google/go-cmp v0.2.0 // indirect
-	github.com/gorilla/context v1.1.1 // indirect
-	github.com/gorilla/handlers v1.4.0 // indirect
-	github.com/gorilla/mux v1.6.2 // indirect
-	github.com/hashicorp/consul v1.2.3 // indirect
-	github.com/hashicorp/go-cleanhttp v0.5.0 // indirect
-	github.com/hashicorp/go-immutable-radix v1.0.0 // indirect
-	github.com/hashicorp/go-msgpack v0.0.0-20150518234257-fa3f63826f7c // indirect
-	github.com/hashicorp/go-multierror v1.0.0 // indirect
-	github.com/hashicorp/go-retryablehttp v0.0.0-20180718195005-e651d75abec6 // indirect
-	github.com/hashicorp/go-sockaddr v0.0.0-20180320115054-6d291a969b86 // indirect
-	github.com/hashicorp/memberlist v0.1.0 // indirect
-	github.com/hashicorp/serf v0.8.1 // indirect
-	github.com/hashicorp/yamux v0.0.0-20180917205041-7221087c3d28 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/miekg/dns v1.0.12 // indirect
 	github.com/mitchellh/hashstructure v1.0.0
 	github.com/oliveagle/jsonpath v0.0.0-20180606110733-2e52cf6e6852
 	github.com/opentracing/opentracing-go v1.0.2
-	github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c // indirect
-	github.com/pelletier/go-toml v1.2.0 // indirect
-	github.com/pilosa/pilosa v1.1.0
 	github.com/pkg/errors v0.8.0 // indirect
-	github.com/prometheus/client_golang v0.8.0 // indirect
-	github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
-	github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e // indirect
-	github.com/prometheus/procfs v0.0.0-20180920065004-418d78d0b9a7 // indirect
-	github.com/satori/go.uuid v1.2.0 // indirect
-	github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529 // indirect
-	github.com/shirou/gopsutil v2.17.12+incompatible // indirect
-	github.com/shirou/w32 v0.0.0-20160930032740-bb4de0191aa4 // indirect
-	github.com/sirupsen/logrus v1.1.0
-	github.com/spf13/cast v1.2.0
-	github.com/stretchr/testify v1.2.2
-	github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926 // indirect
-	golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3 // indirect
-	google.golang.org/grpc v1.15.0 // indirect
+	github.com/sirupsen/logrus v1.1.1
+	github.com/spf13/cast v1.3.0
+	golang.org/x/net v0.0.0-20181029044818-c44066c5c816 // indirect
+	google.golang.org/grpc v1.16.0 // indirect
 	gopkg.in/src-d/go-errors.v1 v1.0.0
-	gopkg.in/src-d/go-vitess.v1 v1.1.0
-	gopkg.in/vmihailenco/msgpack.v2 v2.9.1 // indirect
-	gopkg.in/yaml.v2 v2.2.1
+	gopkg.in/src-d/go-vitess.v1 v1.2.1
 )

server/handler.go

@@ -135,6 +135,20 @@ func (h *Handler) ComQuery(
 	return callback(r)
 }
 
+// WarningCount is called at the end of each query to obtain
+// the value to be returned to the client in the EOF packet.
+// Note that this will be called either in the context of the
+// ComQuery callback if the result does not contain any fields,
+// or after the last ComQuery call completes.
+func (h *Handler) WarningCount(c *mysql.Conn) uint16 {
+	sess, ok := h.sm.sessions[c.ConnectionID]
+	if !ok {
+		return 0
+	}
+
+	return sess.WarningCount()
+}
+
 func (h *Handler) handleKill(conn *mysql.Conn, query string) (bool, error) {
 	q := strings.ToLower(query)
 	s := regKillCmd.FindStringSubmatch(q)

sql/session.go

@@ -39,6 +39,8 @@ type Session interface {
 	Warnings() []*Warning
 	// ClearWarnings cleans up session warnings
 	ClearWarnings()
+	// WarningCount returns a number of session warnings
+	WarningCount() uint16
 }
 
 // BaseSession is the basic session type.
@@ -122,6 +124,13 @@ func (s *BaseSession) ClearWarnings() {
 	}
 }
 
+// WarningCount returns a number of session warnings
+func (s *BaseSession) WarningCount() uint16 {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return uint16(len(s.warnings))
+}
+
 type (
 	// TypedValue is a value along with its type.
 	TypedValue struct {

sql/session_test.go

@@ -22,13 +22,13 @@ func TestSessionConfig(t *testing.T) {
 	require.Equal(Int64, typ)
 	require.Equal(1, v)
 
-	require.Equal(0, len(sess.Warnings()))
+	require.Equal(uint16(0), sess.WarningCount())
 
 	sess.Warn(&Warning{Code: 1})
 	sess.Warn(&Warning{Code: 2})
 	sess.Warn(&Warning{Code: 3})
 
-	require.Equal(3, len(sess.Warnings()))
+	require.Equal(uint16(3), sess.WarningCount())
 
 	require.Equal(3, sess.Warnings()[0].Code)
 	require.Equal(2, sess.Warnings()[1].Code)