Add client billing event support

lib/billing_event.go

@@ -17,8 +17,11 @@ limitations under the License.
 package lib
 
 import (
+	"context"
+
 	api "go.bytebuilders.dev/audit/api/v1"
 
+	core "k8s.io/api/core/v1"
 	kmapi "kmodules.xyz/client-go/api/v1"
 	"kmodules.xyz/client-go/discovery"
 	corev1alpha1 "kmodules.xyz/resource-metadata/apis/core/v1alpha1"
@@ -28,6 +31,9 @@ import (
 type BillingEventCreator struct {
 	Mapper          discovery.ResourceMapper
 	ClusterMetadata *kmapi.ClusterMetadata
+	ClientBilling   bool
+	PodLister       client.Reader
+	PVCLister       client.Reader
 }
 
 func (p *BillingEventCreator) CreateEvent(obj client.Object) (*api.Event, error) {
@@ -41,8 +47,66 @@ func (p *BillingEventCreator) CreateEvent(obj client.Object) (*api.Event, error)
 		return nil, err
 	}
 
+	if p.ClientBilling {
+		if r, ok := obj.(Resource); ok {
+			var podList core.PodList
+			err = p.PodLister.List(context.TODO(), &podList, client.InNamespace(obj.GetNamespace()), client.MatchingLabels(r.OffshootSelectors()))
+			if err != nil {
+				return nil, err
+			}
+			podresources := make([]corev1alpha1.ComputeResource, 0, len(podList.Items))
+			for _, pod := range podList.Items {
+				pr := corev1alpha1.ComputeResource{
+					UID:               pod.UID,
+					Name:              pod.Name,
+					CreationTimestamp: pod.CreationTimestamp,
+					Containers:        make([]corev1alpha1.ContainerResource, 0, len(pod.Spec.Containers)),
+					InitContainers:    make([]corev1alpha1.ContainerResource, 0, len(pod.Spec.Containers)),
+				}
+				for _, c := range pod.Spec.Containers {
+					pr.Containers = append(pr.Containers, corev1alpha1.ContainerResource{
+						Name:          c.Name,
+						Resource:      c.Resources,
+						RestartPolicy: c.RestartPolicy,
+					})
+				}
+				for _, c := range pod.Spec.InitContainers {
+					pr.InitContainers = append(pr.InitContainers, corev1alpha1.ContainerResource{
+						Name:          c.Name,
+						Resource:      c.Resources,
+						RestartPolicy: c.RestartPolicy,
+					})
+				}
+				podresources = append(podresources, pr)
+			}
+			res.Spec.Pods = podresources
+
+			var pvcList core.PersistentVolumeClaimList
+			err = p.PVCLister.List(context.TODO(), &pvcList, client.InNamespace(obj.GetNamespace()), client.MatchingLabels(r.OffshootSelectors()))
+			if err != nil {
+				return nil, err
+			}
+			pvcresources := make([]corev1alpha1.StorageResource, 0, len(podList.Items))
+			for _, pvc := range pvcList.Items {
+				if pvc.Status.Phase == core.ClaimBound {
+					pvcresources = append(pvcresources, corev1alpha1.StorageResource{
+						UID:               pvc.UID,
+						Name:              pvc.Name,
+						CreationTimestamp: pvc.CreationTimestamp,
+						Resources:         pvc.Spec.Resources,
+					})
+				}
+			}
+			res.Spec.Storage = pvcresources
+		}
+	}
+
 	return &api.Event{
 		Resource:   res,
 		ResourceID: *rid,
 	}, nil
 }
+
+type Resource interface {
+	OffshootSelectors() map[string]string
+}

lib/lister.go

@@ -0,0 +1,136 @@
+/*
+Copyright AppsCode Inc. and Contributors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package lib
+
+import (
+	"context"
+	"reflect"
+
+	core "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	corelisters "k8s.io/client-go/listers/core/v1"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type PodReader struct {
+	delegate corelisters.PodLister
+}
+
+var _ client.Reader = &PodReader{}
+
+func NewPodReader(delegate corelisters.PodLister) PodReader {
+	return PodReader{delegate: delegate}
+}
+
+func (r PodReader) Get(ctx context.Context, key client.ObjectKey, obj client.Object, _ ...client.GetOption) error {
+	pod, err := r.delegate.Pods(key.Namespace).Get(key.Name)
+	if err != nil {
+		return err
+	}
+	assign(obj, pod)
+	return nil
+}
+
+func (r PodReader) List(ctx context.Context, list client.ObjectList, opts ...client.ListOption) error {
+	var o client.ListOptions
+	o.ApplyOptions(opts)
+
+	var ls labels.Selector
+	if o.LabelSelector != nil {
+		ls = o.LabelSelector
+	} else if o.Raw != nil && o.Raw.LabelSelector != "" {
+		var err error
+		ls, err = labels.Parse(o.Raw.LabelSelector)
+		if err != nil {
+			return err
+		}
+	}
+
+	pods, err := r.delegate.Pods(o.Namespace).List(ls)
+	if err != nil {
+		return err
+	}
+
+	podList := core.PodList{
+		Items: make([]core.Pod, 0, len(pods)),
+	}
+	for _, pod := range pods {
+		podList.Items = append(podList.Items, *pod)
+	}
+	assign(list, podList)
+
+	return nil
+}
+
+type PersistentVolumeClaimReader struct {
+	delegate corelisters.PersistentVolumeClaimLister
+}
+
+var _ client.Reader = &PersistentVolumeClaimReader{}
+
+func NewPersistentVolumeClaimReader(delegate corelisters.PersistentVolumeClaimLister) PersistentVolumeClaimReader {
+	return PersistentVolumeClaimReader{delegate: delegate}
+}
+
+func (r PersistentVolumeClaimReader) Get(ctx context.Context, key client.ObjectKey, obj client.Object, _ ...client.GetOption) error {
+	pod, err := r.delegate.PersistentVolumeClaims(key.Namespace).Get(key.Name)
+	if err != nil {
+		return err
+	}
+	assign(obj, pod)
+
+	return nil
+}
+
+func (r PersistentVolumeClaimReader) List(ctx context.Context, list client.ObjectList, opts ...client.ListOption) error {
+	var o client.ListOptions
+	o.ApplyOptions(opts)
+
+	var ls labels.Selector
+	if o.LabelSelector != nil {
+		ls = o.LabelSelector
+	} else if o.Raw != nil && o.Raw.LabelSelector != "" {
+		var err error
+		ls, err = labels.Parse(o.Raw.LabelSelector)
+		if err != nil {
+			return err
+		}
+	}
+
+	pvcs, err := r.delegate.PersistentVolumeClaims(o.Namespace).List(ls)
+	if err != nil {
+		return err
+	}
+
+	pvcList := core.PersistentVolumeClaimList{
+		Items: make([]core.PersistentVolumeClaim, 0, len(pvcs)),
+	}
+	for _, pvc := range pvcs {
+		pvcList.Items = append(pvcList.Items, *pvc)
+	}
+	assign(list, pvcList)
+
+	return nil
+}
+
+func assign(target, src any) {
+	srcValue := reflect.ValueOf(src)
+	if srcValue.Kind() == reflect.Pointer {
+		srcValue = srcValue.Elem()
+	}
+	reflect.ValueOf(target).Elem().Set(srcValue)
+}