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resource_quota_usage.go
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/
resource_quota_usage.go
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package resourcequota
import (
"encoding/json"
namespaceutil "github.com/rancher/rancher/pkg/namespace"
validate "github.com/rancher/rancher/pkg/resourcequota"
"github.com/rancher/norman/types/convert"
v1 "github.com/rancher/types/apis/core/v1"
v3 "github.com/rancher/types/apis/management.cattle.io/v3"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
clientcache "k8s.io/client-go/tools/cache"
api "k8s.io/kubernetes/pkg/apis/core"
"k8s.io/kubernetes/pkg/quota"
)
const (
resourceQuotaUsageAnnotation = "field.cattle.io/resourceQuotaUsage"
)
/*
UsageController is responsible for aggregate the resource quota usage,
and setting this information in the project and namespace
*/
type UsageController struct {
ProjectLister v3.ProjectLister
projects v3.ProjectInterface
Namespaces v1.NamespaceInterface
NamespaceLister v1.NamespaceLister
ResourceQuotas v1.ResourceQuotaInterface
ResourceQuotaLister v1.ResourceQuotaLister
LimitRange v1.LimitRangeInterface
LimitRangeLister v1.LimitRangeLister
NsIndexer clientcache.Indexer
}
func (c *UsageController) syncResourceQuotaNamespaceUsage(key string, rq *corev1.ResourceQuota) (runtime.Object, error) {
if rq == nil || rq.DeletionTimestamp != nil {
return nil, nil
}
return nil, c.syncNamespaceUsage(rq)
}
func (c *UsageController) syncResourceQuotaProjectUsage(key string, ns *corev1.Namespace) (runtime.Object, error) {
if ns == nil {
return nil, nil
}
return nil, c.syncProjectUsage(ns)
}
func (c *UsageController) syncProjectUsage(ns *corev1.Namespace) error {
set, err := namespaceutil.IsNamespaceConditionSet(ns, ResourceQuotaInitCondition, true)
if err != nil || !set {
return err
}
if _, ok := ns.Annotations[resourceQuotaUsageAnnotation]; !ok {
return nil
}
projectID, ok := ns.Annotations[projectIDAnnotation]
if !ok {
return nil
}
// validate resource quota
mu := validate.GetProjectLock(projectID)
mu.Lock()
defer mu.Unlock()
projectNamespace, projectName := getProjectNamespaceName(projectID)
project, err := c.ProjectLister.Get(projectNamespace, projectName)
if err != nil || project.Spec.ResourceQuota == nil {
return err
}
namespaces, err := c.NsIndexer.ByIndex(nsByProjectIndex, projectID)
if err != nil {
return err
}
nssResourceList := api.ResourceList{}
for _, obj := range namespaces {
n := obj.(*corev1.Namespace)
if n.DeletionTimestamp != nil {
continue
}
// skip itself
if projectNamespace == n.Name {
continue
}
set, err := namespaceutil.IsNamespaceConditionSet(n, ResourceQuotaInitCondition, true)
if err != nil || !set {
continue
}
val, ok := n.Annotations[resourceQuotaUsageAnnotation]
if !ok {
continue
}
nsLimit := &v3.ResourceQuotaLimit{}
err = json.Unmarshal([]byte(convert.ToString(val)), nsLimit)
if err != nil {
return err
}
nsResourceList, err := validate.ConvertLimitToResourceList(nsLimit)
if err != nil {
return err
}
nssResourceList = quota.Add(nssResourceList, nsResourceList)
}
usage, err := convertResourceListToLimit(nssResourceList)
if err != nil {
return err
}
b, err := json.Marshal(usage)
if err != nil {
return err
}
if string(b) == getProjectResourceQuotaUsage(project) {
return nil
}
updatedProject := project.DeepCopy()
if updatedProject.Annotations == nil {
updatedProject.Annotations = map[string]string{}
}
updatedProject.Annotations[resourceQuotaUsageAnnotation] = string(b)
_, err = c.projects.Update(updatedProject)
if err != nil {
return err
}
return nil
}
func (c *UsageController) syncNamespaceUsage(rq *corev1.ResourceQuota) error {
if v, ok := rq.Labels[resourceQuotaLabel]; !ok || v != "true" {
return nil
}
if rq.Namespace == "" {
return nil
}
ns, err := c.NamespaceLister.Get("", rq.Namespace)
if err != nil || ns == nil {
return err
}
set, err := namespaceutil.IsNamespaceConditionSet(ns, ResourceQuotaInitCondition, true)
if err != nil || !set {
return err
}
rq, err = c.getExistingResourceQuota(ns)
if err != nil {
return err
}
resourceQuota := rq
usage, err := convertUsageToResourceLimit(resourceQuota.Status.Used)
if err != nil {
return err
}
b, err := json.Marshal(usage)
if err != nil {
return err
}
if string(b) == getNamespaceResourceQuotaUsage(ns) {
return nil
}
updatedNs := ns.DeepCopy()
if updatedNs.Annotations == nil {
updatedNs.Annotations = map[string]string{}
}
updatedNs.Annotations[resourceQuotaUsageAnnotation] = string(b)
_, err = c.Namespaces.Update(updatedNs)
if err != nil {
return err
}
return nil
}
func (c *UsageController) getExistingResourceQuota(ns *corev1.Namespace) (*corev1.ResourceQuota, error) {
set := labels.Set(map[string]string{resourceQuotaLabel: "true"})
quota, err := c.ResourceQuotaLister.List(ns.Name, set.AsSelector())
if err != nil {
return nil, err
}
if len(quota) == 0 {
return nil, nil
}
return quota[0], nil
}
func getNamespaceResourceQuotaUsage(ns *corev1.Namespace) string {
if ns.Annotations == nil {
return ""
}
return ns.Annotations[resourceQuotaUsageAnnotation]
}
func convertUsageToResourceLimit(rList corev1.ResourceList) (*v3.ResourceQuotaLimit, error) {
result := &api.ResourceList{}
assemble := corev1.ResourceList{}
for k, v := range resourceQuotaConversion {
if val, ok := rList[corev1.ResourceName(v)]; ok {
assemble[corev1.ResourceName(k)] = val
}
}
for k, v := range rList {
if k == "pods" || k == "services" || k == "secrets" {
assemble[corev1.ResourceName(k)] = v
}
}
bytes, err := json.Marshal(assemble)
if err != nil {
return nil, err
}
err = json.Unmarshal(bytes, result)
if err != nil {
return nil, err
}
return convertResourceListToLimit(*result)
}
func getProjectResourceQuotaUsage(p *v3.Project) string {
if p.Annotations == nil {
return ""
}
return p.Annotations[resourceQuotaUsageAnnotation]
}