feat: implemented service/transport/main layers

internal/transport/rest/handler/handler.go

@@ -0,0 +1,52 @@
+package handler
+
+import (
+	"context"
+	"net/http"
+
+	"git.intra.yksa.space/gsn/predictor/internal/pkg/errcodes"
+	api "git.intra.yksa.space/gsn/predictor/pkg/rest"
+)
+
+var (
+	_ api.Handler = (*Handler)(nil)
+)
+
+type Handler struct {
+	svc Service
+}
+
+func New(svc Service) *Handler {
+	return &Handler{
+		svc: svc,
+	}
+}
+
+func (h *Handler) PerformPrediction(ctx context.Context, req api.OptPredictionParameters, params api.PerformPredictionParams) (*api.PredictionResult, error) {
+	return nil, errcodes.New(http.StatusNotImplemented, "not implemented", "please wait")
+}
+
+func (h *Handler) NewError(ctx context.Context, err error) *api.ErrorStatusCode {
+	if errcode, ok := err.(*errcodes.ErrorCode); ok {
+		resp := api.Error{
+			Message: errcode.Message,
+		}
+
+		if errcode.Details != "" {
+			resp.Details = api.NewOptString(errcode.Details)
+		}
+
+		return &api.ErrorStatusCode{
+			StatusCode: errcode.StatusCode,
+			Response:   resp,
+		}
+	}
+
+	return &api.ErrorStatusCode{
+		StatusCode: http.StatusInternalServerError,
+		Response: api.Error{
+			Message: "undefined internal error",
+			Details: api.NewOptString(err.Error()),
+		},
+	}
+}