add needed files

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

request.go

@@ -0,0 +1,87 @@
+package drpc
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/codec"
+)
+
+type drpcRequest struct {
+	request     interface{}
+	codec       codec.Codec
+	service     string
+	method      string
+	contentType string
+	opts        client.RequestOptions
+}
+
+// service Struct.Method /service.Struct/Method
+func methodToDRPC(service, method string) string {
+	// no method or already grpc method
+	if len(method) == 0 || method[0] == '/' {
+		return method
+	}
+
+	// assume method is Foo.Bar
+	mParts := strings.Split(method, ".")
+	if len(mParts) != 2 {
+		return method
+	}
+
+	if len(service) == 0 {
+		return fmt.Sprintf("/%s/%s", mParts[0], mParts[1])
+	}
+
+	// return /pkg.Foo/Bar
+	return fmt.Sprintf("/%s.%s/%s", strings.Title(service), mParts[0], mParts[1])
+}
+
+func newDRPCRequest(service, method string, request interface{}, contentType string, reqOpts ...client.RequestOption) client.Request {
+	var opts client.RequestOptions
+	for _, o := range reqOpts {
+		o(&opts)
+	}
+
+	// set the content-type specified
+	if len(opts.ContentType) > 0 {
+		contentType = opts.ContentType
+	}
+
+	return &drpcRequest{
+		service:     service,
+		method:      method,
+		request:     request,
+		contentType: contentType,
+		opts:        opts,
+	}
+}
+
+func (d *drpcRequest) ContentType() string {
+	return d.contentType
+}
+
+func (d *drpcRequest) Service() string {
+	return d.service
+}
+
+func (d *drpcRequest) Method() string {
+	return d.method
+}
+
+func (d *drpcRequest) Endpoint() string {
+	return d.method
+}
+
+func (d *drpcRequest) Codec() codec.Codec {
+	return d.codec
+}
+
+func (d *drpcRequest) Body() interface{} {
+	return d.request
+}
+
+func (d *drpcRequest) Stream() bool {
+	return d.opts.Stream
+}