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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync" | ||
|
|
||
| reportsv1 "github.com/kyverno/kyverno/api/reports/v1" | ||
| watchtools "github.com/kyverno/kyverno/cmd/kyverno/watch" | ||
| "github.com/kyverno/kyverno/pkg/client/informers/externalversions/internalinterfaces" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/apimachinery/pkg/util/sets" | ||
| "k8s.io/apimachinery/pkg/watch" | ||
| metadataclient "k8s.io/client-go/metadata" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
|
|
||
| type resourceUIDGetter interface { | ||
| GetUID() types.UID | ||
| } | ||
|
|
||
| type Counter interface { | ||
| Count() (int, bool) | ||
| } | ||
|
|
||
| type counter struct { | ||
| lock sync.RWMutex | ||
| entries sets.Set[types.UID] | ||
| retryWatcher *watchtools.RetryWatcher | ||
| } | ||
|
|
||
| func (c *counter) Record(uid types.UID) { | ||
| c.lock.Lock() | ||
| defer c.lock.Unlock() | ||
| c.entries.Insert(uid) | ||
| } | ||
|
|
||
| func (c *counter) Forget(uid types.UID) { | ||
| c.lock.Lock() | ||
| defer c.lock.Unlock() | ||
| c.entries.Delete(uid) | ||
| } | ||
|
|
||
| func (c *counter) Count() (int, bool) { | ||
| c.lock.RLock() | ||
| defer c.lock.RUnlock() | ||
| return c.entries.Len(), c.retryWatcher.IsRunning() | ||
| } | ||
|
|
||
| func StartResourceCounter(ctx context.Context, client metadataclient.Interface, gvr schema.GroupVersionResource, tweakListOptions internalinterfaces.TweakListOptionsFunc) (*counter, error) { | ||
| objs, err := client.Resource(gvr).List(ctx, metav1.ListOptions{}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| watcher := &cache.ListWatch{ | ||
| WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) { | ||
| if tweakListOptions != nil { | ||
| tweakListOptions(&options) | ||
| } | ||
| return client.Resource(gvr).Watch(ctx, options) | ||
| }, | ||
| } | ||
| watchInterface, err := watchtools.NewRetryWatcher(objs.GetResourceVersion(), watcher) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| entries := sets.New[types.UID]() | ||
| for _, entry := range objs.Items { | ||
| entries.Insert(entry.GetUID()) | ||
| } | ||
| w := &counter{ | ||
| entries: entries, | ||
| retryWatcher: watchInterface, | ||
| } | ||
| go func() { | ||
| for event := range watchInterface.ResultChan() { | ||
| getter, ok := event.Object.(resourceUIDGetter) | ||
| if ok { | ||
| switch event.Type { | ||
| case watch.Added: | ||
| w.Record(getter.GetUID()) | ||
| case watch.Modified: | ||
| w.Record(getter.GetUID()) | ||
| case watch.Deleted: | ||
| w.Forget(getter.GetUID()) | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| return w, nil | ||
| } | ||
|
|
||
| func StartAdmissionReportsCounter(ctx context.Context, client metadataclient.Interface) (Counter, error) { | ||
| tweakListOptions := func(lo *metav1.ListOptions) { | ||
| lo.LabelSelector = "audit.kyverno.io/source==admission" | ||
| } | ||
| ephrs, err := StartResourceCounter(ctx, client, reportsv1.SchemeGroupVersion.WithResource("ephemeralreports"), tweakListOptions) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| cephrs, err := StartResourceCounter(ctx, client, reportsv1.SchemeGroupVersion.WithResource("clusterephemeralreports"), tweakListOptions) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return composite{ | ||
| inner: []Counter{ephrs, cephrs}, | ||
| }, nil | ||
| } | ||
|
|
||
| type composite struct { | ||
| inner []Counter | ||
| } | ||
|
|
||
| func (c composite) Count() (int, bool) { | ||
| sum := 0 | ||
| for _, counter := range c.inner { | ||
| count, isRunning := counter.Count() | ||
| if !isRunning { | ||
| return 0, false | ||
| } | ||
| sum += count | ||
| } | ||
| return sum, true | ||
| } |
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