add http handler for label PATCH

http/label_service.go

@@ -190,6 +190,63 @@ func decodePostLabelRequest(ctx context.Context, r *http.Request) (*postLabelReq
 	return label, nil
 }
 
+type patchLabelRequest struct {
+	label *plat.Label
+	upd   plat.LabelUpdate
+}
+
+func decodePatchLabelRequest(ctx context.Context, r *http.Request) (*patchLabelRequest, error) {
+	params := httprouter.ParamsFromContext(ctx)
+	id := params.ByName("id")
+	if id == "" {
+		return nil, kerrors.InvalidDataf("url missing resource id")
+	}
+
+	name := params.ByName("name")
+	if name == "" {
+		return nil, kerrors.InvalidDataf("label name is missing")
+	}
+
+	var rid plat.ID
+	if err := rid.DecodeFromString(id); err != nil {
+		return nil, err
+	}
+
+	upd := &plat.LabelUpdate{}
+	if err := json.NewDecoder(r.Body).Decode(upd); err != nil {
+		return nil, err
+	}
+
+	return &patchLabelRequest{
+		label: &plat.Label{ResourceID: rid, Name: name},
+		upd:   *upd,
+	}, nil
+}
+
+// newPatchLabelHandler returns a handler func for a PATCH to /labels endpoints
+func newPatchLabelHandler(s plat.LabelService) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+
+		req, err := decodePatchLabelRequest(ctx, r)
+		if err != nil {
+			EncodeError(ctx, err, w)
+			return
+		}
+
+		label, err := s.UpdateLabel(ctx, req.label, req.upd)
+		if err != nil {
+			EncodeError(ctx, err, w)
+			return
+		}
+
+		if err := encodeResponse(ctx, w, http.StatusOK, newLabelResponse(label)); err != nil {
+			EncodeError(ctx, err, w)
+			return
+		}
+	}
+}
+
 // newDeleteLabelHandler returns a handler func for a DELETE to /labels endpoints
 func newDeleteLabelHandler(s plat.LabelService) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
@@ -227,22 +284,20 @@ func decodeDeleteLabelRequest(ctx context.Context, r *http.Request) (*deleteLabe
 		return nil, kerrors.InvalidDataf("url missing resource id")
 	}
 
+	name := params.ByName("name")
+	if name == "" {
+		return nil, kerrors.InvalidDataf("label name is missing")
+	}
+
 	var rid plat.ID
 	if err := rid.DecodeFromString(id); err != nil {
 		return nil, err
 	}
 
-	label := &deleteLabelRequest{}
-	if err := json.NewDecoder(r.Body).Decode(label); err != nil {
-		return nil, err
-	}
-
-	if label.Name == "" {
-		return nil, kerrors.InvalidDataf("label name is missing")
-	}
-	label.ResourceID = rid
-
-	return label, nil
+	return &deleteLabelRequest{
+		Name:       name,
+		ResourceID: rid,
+	}, nil
 }
 
 // FindLabels returns a slice of labels

http/view_service.go

@@ -58,6 +58,7 @@ func NewViewHandler(mappingService platform.UserResourceMappingService, labelSer
 	h.HandlerFunc("GET", viewsIDLabelsPath, newGetLabelsHandler(h.LabelService))
 	h.HandlerFunc("POST", viewsIDLabelsPath, newPostLabelHandler(h.LabelService))
 	h.HandlerFunc("DELETE", viewsIDLabelsNamePath, newDeleteLabelHandler(h.LabelService))
+	h.HandlerFunc("PATCH", viewsIDLabelsNamePath, newPatchLabelHandler(h.LabelService))
 
 	return h
 }