add proto codec.Frame support

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

go.mod

@@ -1,8 +1,17 @@
 module go.unistack.org/micro-codec-msgpack/v3
 
-go 1.16
+go 1.19
 
 require (
 	github.com/vmihailenco/msgpack/v5 v5.3.5
+	go.unistack.org/micro-proto/v3 v3.3.1
 	go.unistack.org/micro/v3 v3.10.5
 )
+
+require (
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/gnostic v0.6.9 // indirect
+	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/yaml.v3 v3.0.0 // indirect
+)

msgpack.go

@@ -5,6 +5,7 @@ import (
 	"io"
 
 	"github.com/vmihailenco/msgpack/v5"
+	pb "go.unistack.org/micro-proto/v3/codec"
 	"go.unistack.org/micro/v3/codec"
 	rutil "go.unistack.org/micro/v3/util/reflect"
 )
@@ -31,7 +32,10 @@ func (c *msgpackCodec) Marshal(v interface{}, opts ...codec.Option) ([]byte, err
 		v = nv
 	}
 
-	if m, ok := v.(*codec.Frame); ok {
+	switch m := v.(type) {
+	case *codec.Frame:
+		return m.Data, nil
+	case *pb.Frame:
 		return m.Data, nil
 	}
 
@@ -52,7 +56,11 @@ func (c *msgpackCodec) Unmarshal(b []byte, v interface{}, opts ...codec.Option)
 		v = nv
 	}
 
-	if m, ok := v.(*codec.Frame); ok {
+	switch m := v.(type) {
+	case *codec.Frame:
+		m.Data = b
+		return nil
+	case *pb.Frame:
 		m.Data = b
 		return nil
 	}