// MaybeConvertObject attempts to convert an object to a specific group/version. If the object is
// a third party resource it is simply passed through.
func MaybeConvertObject(obj runtime.Object, gv schema.GroupVersion, converter runtime.ObjectConvertor) (runtime.Object, error) {
switch obj.(type) {
case *extensions.ThirdPartyResourceData:
// conversion is not supported for 3rd party objects
return obj, nil
default:
return converter.ConvertToVersion(obj, gv)
}
}
// TryConvert attempts to convert the given object to the provided versions in order. This function assumes
// the object is in internal version.
func TryConvert(converter runtime.ObjectConvertor, object runtime.Object, versions ...schema.GroupVersion) (runtime.Object, error) {
var last error
for _, version := range versions {
if version.Empty() {
return object, nil
}
obj, err := converter.ConvertToVersion(object, version)
if err != nil {
last = err
continue
}
return obj, nil
}
return nil, last
}
// PatchResource returns a function that will handle a resource patch
// TODO: Eventually PatchResource should just use GuaranteedUpdate and this routine should be a bit cleaner
func PatchResource(r rest.Patcher, scope RequestScope, admit admission.Interface, converter runtime.ObjectConvertor) restful.RouteFunction {
return func(req *restful.Request, res *restful.Response) {
w := res.ResponseWriter
// TODO: we either want to remove timeout or document it (if we
// document, move timeout out of this function and declare it in
// api_installer)
timeout := parseTimeout(req.Request.URL.Query().Get("timeout"))
namespace, name, err := scope.Namer.Name(req)
if err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
ctx := scope.ContextFunc(req)
ctx = request.WithNamespace(ctx, namespace)
versionedObj, err := converter.ConvertToVersion(r.New(), scope.Kind.GroupVersion())
if err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
// TODO: handle this in negotiation
contentType := req.HeaderParameter("Content-Type")
// Remove "; charset=" if included in header.
if idx := strings.Index(contentType, ";"); idx > 0 {
contentType = contentType[:idx]
}
patchType := types.PatchType(contentType)
patchJS, err := readBody(req.Request)
if err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
s, ok := runtime.SerializerInfoForMediaType(scope.Serializer.SupportedMediaTypes(), runtime.ContentTypeJSON)
if !ok {
scope.err(fmt.Errorf("no serializer defined for JSON"), res.ResponseWriter, req.Request)
return
}
gv := scope.Kind.GroupVersion()
codec := runtime.NewCodec(
scope.Serializer.EncoderForVersion(s.Serializer, gv),
scope.Serializer.DecoderToVersion(s.Serializer, schema.GroupVersion{Group: gv.Group, Version: runtime.APIVersionInternal}),
)
updateAdmit := func(updatedObject runtime.Object, currentObject runtime.Object) error {
if admit != nil && admit.Handles(admission.Update) {
userInfo, _ := request.UserFrom(ctx)
return admit.Admit(admission.NewAttributesRecord(updatedObject, currentObject, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Update, userInfo))
}
return nil
}
result, err := patchResource(ctx, updateAdmit, timeout, versionedObj, r, name, patchType, patchJS, scope.Namer, scope.Copier, scope.Resource, codec)
if err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
if err := setSelfLink(result, req, scope.Namer); err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
responsewriters.WriteObject(http.StatusOK, scope.Kind.GroupVersion(), scope.Serializer, result, w, req.Request)
}
}
