// NewImageStreamTagEvaluator computes resource usage of ImageStreamsTags. Its sole purpose is to handle
// UPDATE admission operations on imageStreamTags resource.
func NewImageStreamTagEvaluator(osClient osclient.Interface) kquota.Evaluator {
computeResources := []kapi.ResourceName{
imageapi.ResourceImages,
}
matchesScopeFunc := func(kapi.ResourceQuotaScope, runtime.Object) bool { return true }
getFuncByNamespace := func(namespace, id string) (runtime.Object, error) {
nameParts := strings.SplitN(id, ":", 2)
if len(nameParts) != 2 {
return nil, fmt.Errorf("%q is an invalid id for an imagestreamtag. Must be in form <name>:<tag>.", id)
}
obj, err := osClient.ImageStreamTags(namespace).Get(nameParts[0], nameParts[1])
if err != nil {
if !kerrors.IsNotFound(err) {
return nil, err
}
obj = &imageapi.ImageStreamTag{
ObjectMeta: kapi.ObjectMeta{
Namespace: namespace,
Name: id,
},
}
}
return obj, nil
}
return quotautil.NewSharedContextEvaluator(
imageStreamTagEvaluatorName,
kapi.Kind("ImageStreamTag"),
map[admission.Operation][]kapi.ResourceName{admission.Update: computeResources},
computeResources,
matchesScopeFunc,
getFuncByNamespace,
nil,
imageStreamTagConstraintsFunc,
makeImageStreamTagUsageComputerFactory(osClient))
}
