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Update quota status with limits even when calculating errors

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This commit is contained in:
Jordan Liggitt 2019-03-13 20:13:51 -07:00
parent 739df5452a
commit 27cd2be49f
6 changed files with 225 additions and 18 deletions
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1
pkg/controller/resourcequota/BUILD
View File

@ -54,6 +54,7 @@ go_test(
"//staging/src/k8s.io/api/core/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",

16
pkg/controller/resourcequota/resource_quota_controller.go
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@ -30,6 +30,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
@ -321,12 +322,12 @@ func (rq *ResourceQuotaController) syncResourceQuotaFromKey(key string) (err err
// syncResourceQuota runs a complete sync of resource quota status across all known kinds
func (rq *ResourceQuotaController) syncResourceQuota(resourceQuota *v1.ResourceQuota) (err error) {
// quota is dirty if any part of spec hard limits differs from the status hard limits
dirty := !apiequality.Semantic.DeepEqual(resourceQuota.Spec.Hard, resourceQuota.Status.Hard)
statusLimitsDirty := !apiequality.Semantic.DeepEqual(resourceQuota.Spec.Hard, resourceQuota.Status.Hard)
// dirty tracks if the usage status differs from the previous sync,
// if so, we send a new usage with latest status
// if this is our first sync, it will be dirty by default, since we need track usage
dirty = dirty || resourceQuota.Status.Hard == nil || resourceQuota.Status.Used == nil
dirty := statusLimitsDirty || resourceQuota.Status.Hard == nil || resourceQuota.Status.Used == nil
used := v1.ResourceList{}
if resourceQuota.Status.Used != nil {
@ -334,9 +335,12 @@ func (rq *ResourceQuotaController) syncResourceQuota(resourceQuota *v1.ResourceQ
}
hardLimits := quota.Add(v1.ResourceList{}, resourceQuota.Spec.Hard)
errors := []error{}
newUsage, err := quota.CalculateUsage(resourceQuota.Namespace, resourceQuota.Spec.Scopes, hardLimits, rq.registry, resourceQuota.Spec.ScopeSelector)
if err != nil {
return err
// if err is non-nil, remember it to return, but continue updating status with any resources in newUsage
errors = append(errors, err)
}
for key, value := range newUsage {
used[key] = value
@ -359,9 +363,11 @@ func (rq *ResourceQuotaController) syncResourceQuota(resourceQuota *v1.ResourceQ
// there was a change observed by this controller that requires we update quota
if dirty {
_, err = rq.rqClient.ResourceQuotas(usage.Namespace).UpdateStatus(usage)
return err
if err != nil {
errors = append(errors, err)
}
}
return nil
return utilerrors.NewAggregate(errors)
}
// replenishQuota is a replenishment function invoked by a controller to notify that a quota should be recalculated

81
pkg/controller/resourcequota/resource_quota_controller_test.go
View File

@ -28,6 +28,7 @@ import (
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
@ -83,6 +84,23 @@ func newGenericLister(groupResource schema.GroupResource, items []runtime.Object
return cache.NewGenericLister(store, groupResource)
}
func newErrorLister() cache.GenericLister {
return errorLister{}
}
type errorLister struct {
}
func (errorLister) List(selector labels.Selector) (ret []runtime.Object, err error) {
return nil, fmt.Errorf("error listing")
}
func (errorLister) Get(name string) (runtime.Object, error) {
return nil, fmt.Errorf("error getting")
}
func (errorLister) ByNamespace(namespace string) cache.GenericNamespaceLister {
return errorLister{}
}
type quotaController struct {
*ResourceQuotaController
stop chan struct{}
@ -205,9 +223,11 @@ func newTestPodsWithPriorityClasses() []runtime.Object {
func TestSyncResourceQuota(t *testing.T) {
testCases := map[string]struct {
gvr schema.GroupVersionResource
errorGVR schema.GroupVersionResource
items []runtime.Object
quota v1.ResourceQuota
status v1.ResourceQuotaStatus
expectedError string
expectedActionSet sets.String
}{
"non-matching-best-effort-scoped-quota": {
@ -699,18 +719,75 @@ func TestSyncResourceQuota(t *testing.T) {
expectedActionSet: sets.NewString(),
items: []runtime.Object{},
},
"quota-missing-status-with-calculation-error": {
errorGVR: v1.SchemeGroupVersion.WithResource("pods"),
quota: v1.ResourceQuota{
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "rq",
},
Spec: v1.ResourceQuotaSpec{
Hard: v1.ResourceList{
v1.ResourcePods: resource.MustParse("1"),
},
},
Status: v1.ResourceQuotaStatus{},
},
status: v1.ResourceQuotaStatus{
Hard: v1.ResourceList{
v1.ResourcePods: resource.MustParse("1"),
},
},
expectedError: "error listing",
expectedActionSet: sets.NewString("update-resourcequotas-status"),
items: []runtime.Object{},
},
"quota-missing-status-with-partial-calculation-error": {
gvr: v1.SchemeGroupVersion.WithResource("configmaps"),
errorGVR: v1.SchemeGroupVersion.WithResource("pods"),
quota: v1.ResourceQuota{
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "rq",
},
Spec: v1.ResourceQuotaSpec{
Hard: v1.ResourceList{
v1.ResourcePods: resource.MustParse("1"),
v1.ResourceConfigMaps: resource.MustParse("1"),
},
},
Status: v1.ResourceQuotaStatus{},
},
status: v1.ResourceQuotaStatus{
Hard: v1.ResourceList{
v1.ResourcePods: resource.MustParse("1"),
v1.ResourceConfigMaps: resource.MustParse("1"),
},
Used: v1.ResourceList{
v1.ResourceConfigMaps: resource.MustParse("0"),
},
},
expectedError: "error listing",
expectedActionSet: sets.NewString("update-resourcequotas-status"),
items: []runtime.Object{},
},
}
for testName, testCase := range testCases {
kubeClient := fake.NewSimpleClientset(&testCase.quota)
listersForResourceConfig := map[schema.GroupVersionResource]cache.GenericLister{
testCase.gvr: newGenericLister(testCase.gvr.GroupResource(), testCase.items),
testCase.gvr: newGenericLister(testCase.gvr.GroupResource(), testCase.items),
testCase.errorGVR: newErrorLister(),
}
qc := setupQuotaController(t, kubeClient, mockListerForResourceFunc(listersForResourceConfig), mockDiscoveryFunc)
defer close(qc.stop)
if err := qc.syncResourceQuota(&testCase.quota); err != nil {
t.Fatalf("test: %s, unexpected error: %v", testName, err)
if len(testCase.expectedError) == 0 || !strings.Contains(err.Error(), testCase.expectedError) {
t.Fatalf("test: %s, unexpected error: %v", testName, err)
}
} else if len(testCase.expectedError) > 0 {
t.Fatalf("test: %s, expected error %q, got none", testName, testCase.expectedError)
}
actionSet := sets.NewString()

1
pkg/quota/v1/BUILD
View File

@ -18,6 +18,7 @@ go_library(
"//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//staging/src/k8s.io/apiserver/pkg/admission:go_default_library",
"//staging/src/k8s.io/client-go/tools/cache:go_default_library",

53
pkg/quota/v1/resources.go
View File

@ -17,10 +17,12 @@ limitations under the License.
package quota
import (
"sort"
"strings"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
"k8s.io/apimachinery/pkg/util/sets"
)
@ -186,7 +188,12 @@ func ResourceNames(resources corev1.ResourceList) []corev1.ResourceName {
// Contains returns true if the specified item is in the list of items
func Contains(items []corev1.ResourceName, item corev1.ResourceName) bool {
return ToSet(items).Has(string(item))
for _, i := range items {
if i == item {
return true
}
}
return false
}
// ContainsPrefix returns true if the specified item has a prefix that contained in given prefix Set
@ -199,15 +206,32 @@ func ContainsPrefix(prefixSet []string, item corev1.ResourceName) bool {
return false
}
// Intersection returns the intersection of both list of resources
// Intersection returns the intersection of both list of resources, deduped and sorted
func Intersection(a []corev1.ResourceName, b []corev1.ResourceName) []corev1.ResourceName {
setA := ToSet(a)
setB := ToSet(b)
setC := setA.Intersection(setB)
result := []corev1.ResourceName{}
for _, resourceName := range setC.List() {
result = append(result, corev1.ResourceName(resourceName))
result := make([]corev1.ResourceName, 0, len(a))
for _, item := range a {
if Contains(result, item) {
continue
}
if !Contains(b, item) {
continue
}
result = append(result, item)
}
sort.Slice(result, func(i, j int) bool { return result[i] < result[j] })
return result
}
// Difference returns the list of resources resulting from a-b, deduped and sorted
func Difference(a []corev1.ResourceName, b []corev1.ResourceName) []corev1.ResourceName {
result := make([]corev1.ResourceName, 0, len(a))
for _, item := range a {
if Contains(b, item) || Contains(result, item) {
continue
}
result = append(result, item)
}
sort.Slice(result, func(i, j int) bool { return result[i] < result[j] })
return result
}
@ -243,7 +267,8 @@ func ToSet(resourceNames []corev1.ResourceName) sets.String {
return result
}
// CalculateUsage calculates and returns the requested ResourceList usage
// CalculateUsage calculates and returns the requested ResourceList usage.
// If an error is returned, usage only contains the resources which encountered no calculation errors.
func CalculateUsage(namespaceName string, scopes []corev1.ResourceQuotaScope, hardLimits corev1.ResourceList, registry Registry, scopeSelector *corev1.ScopeSelector) (corev1.ResourceList, error) {
// find the intersection between the hard resources on the quota
// and the resources this controller can track to know what we can
@ -257,6 +282,8 @@ func CalculateUsage(namespaceName string, scopes []corev1.ResourceQuotaScope, ha
// NOTE: the intersection just removes duplicates since the evaluator match intersects with hard
matchedResources := Intersection(hardResources, potentialResources)
errors := []error{}
// sum the observed usage from each evaluator
newUsage := corev1.ResourceList{}
for _, evaluator := range evaluators {
@ -269,7 +296,11 @@ func CalculateUsage(namespaceName string, scopes []corev1.ResourceQuotaScope, ha
usageStatsOptions := UsageStatsOptions{Namespace: namespaceName, Scopes: scopes, Resources: intersection, ScopeSelector: scopeSelector}
stats, err := evaluator.UsageStats(usageStatsOptions)
if err != nil {
return nil, err
// remember the error
errors = append(errors, err)
// exclude resources which encountered calculation errors
matchedResources = Difference(matchedResources, intersection)
continue
}
newUsage = Add(newUsage, stats.Used)
}
@ -278,5 +309,5 @@ func CalculateUsage(namespaceName string, scopes []corev1.ResourceQuotaScope, ha
// merge our observed usage with the quota usage status
// if the new usage is different than the last usage, we will need to do an update
newUsage = Mask(newUsage, matchedResources)
return newUsage, nil
return newUsage, utilerrors.NewAggregate(errors)
}

91
pkg/quota/v1/resources_test.go
View File

@ -17,6 +17,7 @@ limitations under the License.
package quota
import (
"reflect"
"testing"
corev1 "k8s.io/api/core/v1"
@ -319,3 +320,93 @@ func TestIsNegative(t *testing.T) {
}
}
}
func TestIntersection(t *testing.T) {
testCases := map[string]struct {
a []corev1.ResourceName
b []corev1.ResourceName
expected []corev1.ResourceName
}{
"empty": {
a: []corev1.ResourceName{},
b: []corev1.ResourceName{},
expected: []corev1.ResourceName{},
},
"equal": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
expected: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
},
"a has extra": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU},
expected: []corev1.ResourceName{corev1.ResourceCPU},
},
"b has extra": {
a: []corev1.ResourceName{corev1.ResourceCPU},
b: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
expected: []corev1.ResourceName{corev1.ResourceCPU},
},
"dedupes": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceCPU, corev1.ResourceMemory, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU},
expected: []corev1.ResourceName{corev1.ResourceCPU},
},
"sorts": {
a: []corev1.ResourceName{corev1.ResourceMemory, corev1.ResourceMemory, corev1.ResourceCPU, corev1.ResourceCPU},
b: []corev1.ResourceName{corev1.ResourceMemory, corev1.ResourceMemory, corev1.ResourceCPU, corev1.ResourceCPU},
expected: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
},
}
for testName, testCase := range testCases {
actual := Intersection(testCase.a, testCase.b)
if !reflect.DeepEqual(actual, testCase.expected) {
t.Errorf("%s expected: %#v, actual: %#v", testName, testCase.expected, actual)
}
}
}
func TestDifference(t *testing.T) {
testCases := map[string]struct {
a []corev1.ResourceName
b []corev1.ResourceName
expected []corev1.ResourceName
}{
"empty": {
a: []corev1.ResourceName{},
b: []corev1.ResourceName{},
expected: []corev1.ResourceName{},
},
"equal": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
expected: []corev1.ResourceName{},
},
"a has extra": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU},
expected: []corev1.ResourceName{corev1.ResourceMemory},
},
"b has extra": {
a: []corev1.ResourceName{corev1.ResourceCPU},
b: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
expected: []corev1.ResourceName{},
},
"dedupes": {
a: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceCPU, corev1.ResourceMemory, corev1.ResourceMemory},
b: []corev1.ResourceName{corev1.ResourceCPU},
expected: []corev1.ResourceName{corev1.ResourceMemory},
},
"sorts": {
a: []corev1.ResourceName{corev1.ResourceMemory, corev1.ResourceMemory, corev1.ResourceCPU, corev1.ResourceCPU},
b: []corev1.ResourceName{},
expected: []corev1.ResourceName{corev1.ResourceCPU, corev1.ResourceMemory},
},
}
for testName, testCase := range testCases {
actual := Difference(testCase.a, testCase.b)
if !reflect.DeepEqual(actual, testCase.expected) {
t.Errorf("%s expected: %#v, actual: %#v", testName, testCase.expected, actual)
}
}
}