Update dependencies

vendor/github.com/grpc-ecosystem/grpc-gateway/internal/stream_chunk.pb.go

@@ -36,7 +36,7 @@ func (m *StreamError) Reset()         { *m = StreamError{} }
 func (m *StreamError) String() string { return proto.CompactTextString(m) }
 func (*StreamError) ProtoMessage()    {}
 func (*StreamError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_stream_chunk_cac6867f460b29a5, []int{0}
+	return fileDescriptor_stream_chunk_a2afb657504565d7, []int{0}
 }
 func (m *StreamError) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_StreamError.Unmarshal(m, b)
@@ -96,10 +96,10 @@ func init() {
 }
 
 func init() {
-	proto.RegisterFile("internal/stream_chunk.proto", fileDescriptor_stream_chunk_cac6867f460b29a5)
+	proto.RegisterFile("internal/stream_chunk.proto", fileDescriptor_stream_chunk_a2afb657504565d7)
 }
 
-var fileDescriptor_stream_chunk_cac6867f460b29a5 = []byte{
+var fileDescriptor_stream_chunk_a2afb657504565d7 = []byte{
 	// 223 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x34, 0x90, 0x41, 0x4e, 0xc3, 0x30,
 	0x10, 0x45, 0x15, 0x4a, 0x69, 0x3b, 0xd9, 0x45, 0x5d, 0x18, 0xba, 0x20, 0x62, 0x95, 0x95, 0x23,

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/errors.go

@@ -65,7 +65,7 @@ var (
 )
 
 type errorBody struct {
-	Error   string     `protobuf:"bytes,1,name=error" json:"error"`
+	Error string `protobuf:"bytes,1,name=error" json:"error"`
 	// This is to make the error more compatible with users that expect errors to be Status objects:
 	// https://github.com/grpc/grpc/blob/master/src/proto/grpc/status/status.proto
 	// It should be the exact same message as the Error field.
@@ -88,14 +88,23 @@ func (*errorBody) ProtoMessage()    {}
 func DefaultHTTPError(ctx context.Context, mux *ServeMux, marshaler Marshaler, w http.ResponseWriter, _ *http.Request, err error) {
 	const fallback = `{"error": "failed to marshal error message"}`
 
-	w.Header().Del("Trailer")
-	w.Header().Set("Content-Type", marshaler.ContentType())
-
 	s, ok := status.FromError(err)
 	if !ok {
 		s = status.New(codes.Unknown, err.Error())
 	}
 
+	w.Header().Del("Trailer")
+
+	contentType := marshaler.ContentType()
+	// Check marshaler on run time in order to keep backwards compatability
+	// An interface param needs to be added to the ContentType() function on
+	// the Marshal interface to be able to remove this check
+	if httpBodyMarshaler, ok := marshaler.(*HTTPBodyMarshaler); ok {
+		pb := s.Proto()
+		contentType = httpBodyMarshaler.ContentTypeFromMessage(pb)
+	}
+	w.Header().Set("Content-Type", contentType)
+
 	body := &errorBody{
 		Error:   s.Message(),
 		Message: s.Message(),

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/handler.go

@@ -121,7 +121,16 @@ func ForwardResponseMessage(ctx context.Context, mux *ServeMux, marshaler Marsha
 
 	handleForwardResponseServerMetadata(w, mux, md)
 	handleForwardResponseTrailerHeader(w, md)
-	w.Header().Set("Content-Type", marshaler.ContentType())
+
+	contentType := marshaler.ContentType()
+	// Check marshaler on run time in order to keep backwards compatability
+	// An interface param needs to be added to the ContentType() function on 
+	// the Marshal interface to be able to remove this check
+	if httpBodyMarshaler, ok := marshaler.(*HTTPBodyMarshaler); ok {
+		contentType = httpBodyMarshaler.ContentTypeFromMessage(resp)
+	}
+	w.Header().Set("Content-Type", contentType)
+
 	if err := handleForwardResponseOptions(ctx, w, resp, opts); err != nil {
 		HTTPError(ctx, mux, marshaler, w, req, err)
 		return

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/marshal_httpbodyproto.go

@@ -0,0 +1,43 @@
+package runtime
+
+import (
+	"google.golang.org/genproto/googleapis/api/httpbody"
+)
+
+// SetHTTPBodyMarshaler overwrite the default marshaler with the HTTPBodyMarshaler
+func SetHTTPBodyMarshaler(serveMux *ServeMux) {
+	serveMux.marshalers.mimeMap[MIMEWildcard] = &HTTPBodyMarshaler{
+		Marshaler: &JSONPb{OrigName: true},
+	}
+}
+
+// HTTPBodyMarshaler is a Marshaler which supports marshaling of a
+// google.api.HttpBody message as the full response body if it is
+// the actual message used as the response. If not, then this will
+// simply fallback to the Marshaler specified as its default Marshaler.
+type HTTPBodyMarshaler struct {
+	Marshaler
+}
+
+// ContentType implementation to keep backwards compatability with marshal interface
+func (h *HTTPBodyMarshaler) ContentType() string {
+	return h.ContentTypeFromMessage(nil)
+}
+
+// ContentTypeFromMessage in case v is a google.api.HttpBody message it returns
+// its specified content type otherwise fall back to the default Marshaler.
+func (h *HTTPBodyMarshaler) ContentTypeFromMessage(v interface{}) string {
+	if httpBody, ok := v.(*httpbody.HttpBody); ok {
+		return httpBody.GetContentType()
+	}
+	return h.Marshaler.ContentType()
+}
+
+// Marshal marshals "v" by returning the body bytes if v is a
+// google.api.HttpBody message, otherwise it falls back to the default Marshaler.
+func (h *HTTPBodyMarshaler) Marshal(v interface{}) ([]byte, error) {
+	if httpBody, ok := v.(*httpbody.HttpBody); ok {
+		return httpBody.Data, nil
+	}
+	return h.Marshaler.Marshal(v)
+}

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/proto_errors.go

@@ -26,14 +26,23 @@ func DefaultHTTPProtoErrorHandler(ctx context.Context, mux *ServeMux, marshaler
 	// return Internal when Marshal failed
 	const fallback = `{"code": 13, "message": "failed to marshal error message"}`
 
-	w.Header().Del("Trailer")
-	w.Header().Set("Content-Type", marshaler.ContentType())
-
 	s, ok := status.FromError(err)
 	if !ok {
 		s = status.New(codes.Unknown, err.Error())
 	}
 
+	w.Header().Del("Trailer")
+
+	contentType := marshaler.ContentType()
+	// Check marshaler on run time in order to keep backwards compatability
+	// An interface param needs to be added to the ContentType() function on 
+	// the Marshal interface to be able to remove this check
+	if httpBodyMarshaler, ok := marshaler.(*HTTPBodyMarshaler); ok {
+		pb := s.Proto()
+		contentType = httpBodyMarshaler.ContentTypeFromMessage(pb)
+	}
+	w.Header().Set("Content-Type", contentType)
+
 	buf, merr := marshaler.Marshal(s.Proto())
 	if merr != nil {
 		grpclog.Infof("Failed to marshal error message %q: %v", s.Proto(), merr)