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feat(manager): add support for pod additionalMetadata
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| package podlabels | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "github.com/go-logr/logr" | ||
| "github.com/projectcapsule/capsule/pkg/utils" | ||
| corev1 "k8s.io/api/core/v1" | ||
| apierr "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/fields" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/builder" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil" | ||
| "sigs.k8s.io/controller-runtime/pkg/predicate" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
|
|
||
| "github.com/pkg/errors" | ||
| capsulev1beta2 "github.com/projectcapsule/capsule/api/v1beta2" | ||
| ) | ||
|
|
||
| type abstractPodLabelsReconciler struct { | ||
| obj client.Object | ||
| client client.Client | ||
| log logr.Logger | ||
| } | ||
|
|
||
| func (r *abstractPodLabelsReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) { | ||
| tenant, err := r.getTenant(ctx, request.NamespacedName, r.client) | ||
| if err != nil { | ||
| r.log.Error(err, fmt.Sprintf("Cannot get tenant for %T %s/%s", r.obj, request.Namespace, request.Name)) | ||
|
|
||
| noTenantObjError := &NonTenantObjectError{} | ||
| noPodMetaError := &NoPodMetadataError{} | ||
|
|
||
| if errors.As(err, &noTenantObjError) || errors.As(err, &noPodMetaError) { | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
|
||
| r.log.Error(err, fmt.Sprintf("Cannot sync %T %s/%s labels", r.obj, r.obj.GetNamespace(), r.obj.GetName())) | ||
|
|
||
| return reconcile.Result{}, err | ||
| } | ||
|
|
||
| err = r.client.Get(ctx, request.NamespacedName, r.obj) | ||
| if err != nil { | ||
| if apierr.IsNotFound(err) { | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
|
||
| return reconcile.Result{}, err | ||
| } | ||
| _, err = controllerutil.CreateOrUpdate(ctx, r.client, r.obj, func() (err error) { | ||
| r.obj.SetLabels(r.sync(r.obj.GetLabels(), tenant.Spec.PodOptions.AdditionalMetadata.Labels)) | ||
| r.obj.SetAnnotations(r.sync(r.obj.GetAnnotations(), tenant.Spec.PodOptions.AdditionalMetadata.Annotations)) | ||
| return nil | ||
| }) | ||
| return reconcile.Result{}, err | ||
| } | ||
|
|
||
| func (r *abstractPodLabelsReconciler) getTenant(ctx context.Context, namespacedName types.NamespacedName, client client.Client) (*capsulev1beta2.Tenant, error) { | ||
| ns := &corev1.Namespace{} | ||
| tenant := &capsulev1beta2.Tenant{} | ||
|
|
||
| if err := client.Get(ctx, types.NamespacedName{Name: namespacedName.Namespace}, ns); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| capsuleLabel, _ := utils.GetTypeLabel(&capsulev1beta2.Tenant{}) | ||
| if _, ok := ns.GetLabels()[capsuleLabel]; !ok { | ||
| return nil, NewNonTenantObject(namespacedName.Name) | ||
| } | ||
|
|
||
| if err := client.Get(ctx, types.NamespacedName{Name: ns.Labels[capsuleLabel]}, tenant); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if tenant.Spec.PodOptions == nil || tenant.Spec.PodOptions.AdditionalMetadata == nil { | ||
| return nil, NewNoPodMetadata(namespacedName.Name) | ||
| } | ||
|
|
||
| return tenant, nil | ||
| } | ||
|
|
||
| func (r *abstractPodLabelsReconciler) sync(available map[string]string, tenantSpec map[string]string) map[string]string { | ||
| if tenantSpec != nil { | ||
| if available == nil { | ||
| available = tenantSpec | ||
| } else { | ||
| for key, value := range tenantSpec { | ||
| if available[key] != value { | ||
| available[key] = value | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return available | ||
| } | ||
|
|
||
| func (r *abstractPodLabelsReconciler) forOptionPerInstanceName(ctx context.Context) builder.ForOption { | ||
| return builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool { | ||
| return r.IsNamespaceInTenant(ctx, object.GetNamespace()) | ||
| })) | ||
| } | ||
|
|
||
| func (r *abstractPodLabelsReconciler) IsNamespaceInTenant(ctx context.Context, namespace string) bool { | ||
| tl := &capsulev1beta2.TenantList{} | ||
| if err := r.client.List(ctx, tl, client.MatchingFieldsSelector{ | ||
| Selector: fields.OneTermEqualSelector(".status.namespaces", namespace), | ||
| }); err != nil { | ||
| return false | ||
| } | ||
|
|
||
| return len(tl.Items) > 0 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package podlabels | ||
|
|
||
| import "fmt" | ||
|
|
||
| type NonTenantObjectError struct { | ||
| objectName string | ||
| } | ||
|
|
||
| func NewNonTenantObject(objectName string) error { | ||
| return &NonTenantObjectError{objectName: objectName} | ||
| } | ||
|
|
||
| func (n NonTenantObjectError) Error() string { | ||
| return fmt.Sprintf("Skipping labels sync for %s as it doesn't belong to tenant", n.objectName) | ||
| } | ||
|
|
||
| type NoPodMetadataError struct { | ||
| objectName string | ||
| } | ||
|
|
||
| func NewNoPodMetadata(objectName string) error { | ||
| return &NoPodMetadataError{objectName: objectName} | ||
| } | ||
|
|
||
| func (n NoPodMetadataError) Error() string { | ||
| return fmt.Sprintf("Skipping labels sync for %s because no AdditionalLabels or AdditionalAnnotations presents in Tenant spec", n.objectName) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| package podlabels | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/go-logr/logr" | ||
| corev1 "k8s.io/api/core/v1" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| ) | ||
|
|
||
| type PodLabelsReconciler struct { | ||
| abstractPodLabelsReconciler | ||
|
|
||
| Log logr.Logger | ||
| } | ||
|
|
||
| func (r *PodLabelsReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager) error { | ||
| r.abstractPodLabelsReconciler = abstractPodLabelsReconciler{ | ||
| obj: &corev1.Pod{}, | ||
| client: mgr.GetClient(), | ||
| log: r.Log, | ||
| } | ||
|
|
||
| return ctrl.NewControllerManagedBy(mgr). | ||
| For(r.abstractPodLabelsReconciler.obj, r.abstractPodLabelsReconciler.forOptionPerInstanceName(ctx)). | ||
| Complete(r) | ||
| } |
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