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only compute delta on non-creating updates

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This commit is contained in:
deads2k 2016-08-18 13:41:33 -04:00
parent 9d2a5fe5e8
commit 44808c64ae
2 changed files with 11 additions and 5 deletions
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6
plugin/pkg/admission/resourcequota/admission_test.go
View File

@ -295,8 +295,8 @@ func TestAdmitHandlesOldObjects(t *testing.T) {
indexer.Add(resourceQuota)
// old service was a load balancer, but updated version is a node port.
oldService := &api.Service{
ObjectMeta: api.ObjectMeta{Name: "service", Namespace: "test"},
existingService := &api.Service{
ObjectMeta: api.ObjectMeta{Name: "service", Namespace: "test", ResourceVersion: "1"},
Spec: api.ServiceSpec{Type: api.ServiceTypeLoadBalancer},
}
newService := &api.Service{
@ -306,7 +306,7 @@ func TestAdmitHandlesOldObjects(t *testing.T) {
Ports: []api.ServicePort{{Port: 1234}},
},
}
err := handler.Admit(admission.NewAttributesRecord(newService, oldService, api.Kind("Service").WithVersion("version"), newService.Namespace, newService.Name, api.Resource("services").WithVersion("version"), "", admission.Update, nil))
err := handler.Admit(admission.NewAttributesRecord(newService, existingService, api.Kind("Service").WithVersion("version"), newService.Namespace, newService.Name, api.Resource("services").WithVersion("version"), "", admission.Update, nil))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}

10
plugin/pkg/admission/resourcequota/controller.go
View File

@ -369,8 +369,14 @@ func (e *quotaEvaluator) checkRequest(quotas []api.ResourceQuota, a admission.At
if prevItem == nil {
return nil, admission.NewForbidden(a, fmt.Errorf("unable to get previous usage since prior version of object was not found"))
}
prevUsage := evaluator.Usage(prevItem)
deltaUsage = quota.Subtract(deltaUsage, prevUsage)
// if we can definitively determine that this is not a case of "create on update",
// then charge based on the delta. Otherwise, bill the maximum
metadata, err := meta.Accessor(prevItem)
if err == nil && len(metadata.GetResourceVersion()) > 0 {
prevUsage := evaluator.Usage(prevItem)
deltaUsage = quota.Subtract(deltaUsage, prevUsage)
}
}
if quota.IsZero(deltaUsage) {
return quotas, nil