/
predicate.go
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/
predicate.go
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// Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 predicate
import (
"errors"
extensionscontroller "github.com/gardener/gardener/extensions/pkg/controller"
extensionsinject "github.com/gardener/gardener/extensions/pkg/inject"
gardencore "github.com/gardener/gardener/pkg/api/core"
"github.com/gardener/gardener/pkg/api/extensions"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
gardenpredicate "github.com/gardener/gardener/pkg/predicate"
"github.com/gardener/gardener/pkg/utils/version"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/predicate"
)
// Log is the logger for predicates.
var Log logr.Logger = log.Log
// EvalGeneric returns true if all predicates match for the given object.
func EvalGeneric(obj client.Object, predicates ...predicate.Predicate) bool {
e := event.GenericEvent{Object: obj}
for _, p := range predicates {
if !p.Generic(e) {
return false
}
}
return true
}
type shootNotFailedMapper struct {
log logr.Logger
extensionsinject.WithClient
extensionsinject.WithContext
extensionsinject.WithCache
}
func (s *shootNotFailedMapper) Map(e event.GenericEvent) bool {
// Return true for resources in the garden namespace, as they are not associated with a shoot
if e.Object.GetNamespace() == v1beta1constants.GardenNamespace {
return true
}
// Wait for cache sync because of backing client cache.
if !s.Cache.WaitForCacheSync(s.Context) {
err := errors.New("failed to wait for caches to sync")
s.log.Error(err, "Could not wait for Cache to sync", "predicate", "ShootNotFailed")
return false
}
cluster, err := extensionscontroller.GetCluster(s.Context, s.Client, e.Object.GetNamespace())
if err != nil {
s.log.Error(err, "Could not retrieve corresponding cluster")
return false
}
if extensionscontroller.IsFailed(cluster) {
return cluster.Shoot.Generation != cluster.Shoot.Status.ObservedGeneration
}
return true
}
// ShootNotFailed is a predicate for failed shoots.
func ShootNotFailed() predicate.Predicate {
return FromMapper(&shootNotFailedMapper{log: Log.WithName("shoot-not-failed")},
CreateTrigger, UpdateNewTrigger, DeleteTrigger, GenericTrigger)
}
// HasType filters the incoming OperatingSystemConfigs for ones that have the same type
// as the given type.
func HasType(typeName string) predicate.Predicate {
return FromMapper(MapperFunc(func(e event.GenericEvent) bool {
acc, err := extensions.Accessor(e.Object)
if err != nil {
return false
}
return acc.GetExtensionSpec().GetExtensionType() == typeName
}), CreateTrigger, UpdateNewTrigger, DeleteTrigger, GenericTrigger)
}
// HasName returns a predicate that matches the given name of a resource.
func HasName(name string) predicate.Predicate {
return FromMapper(MapperFunc(func(e event.GenericEvent) bool {
return e.Object.GetName() == name
}), CreateTrigger, UpdateNewTrigger, DeleteTrigger, GenericTrigger)
}
// HasOperationAnnotation is a predicate for the operation annotation.
func HasOperationAnnotation() predicate.Predicate {
return FromMapper(MapperFunc(func(e event.GenericEvent) bool {
return e.Object.GetAnnotations()[v1beta1constants.GardenerOperation] == v1beta1constants.GardenerOperationReconcile ||
e.Object.GetAnnotations()[v1beta1constants.GardenerOperation] == v1beta1constants.GardenerOperationRestore ||
e.Object.GetAnnotations()[v1beta1constants.GardenerOperation] == v1beta1constants.GardenerOperationMigrate
}), CreateTrigger, UpdateNewTrigger, GenericTrigger)
}
// LastOperationNotSuccessful is a predicate for unsuccessful last operations **only** for creation events.
func LastOperationNotSuccessful() predicate.Predicate {
operationNotSucceeded := func(obj client.Object) bool {
acc, err := extensions.Accessor(obj)
if err != nil {
return false
}
lastOp := acc.GetExtensionStatus().GetLastOperation()
return lastOp == nil ||
lastOp.State != gardencorev1beta1.LastOperationStateSucceeded
}
return predicate.Funcs{
CreateFunc: func(event event.CreateEvent) bool {
return operationNotSucceeded(event.Object)
},
UpdateFunc: func(event event.UpdateEvent) bool {
return false
},
GenericFunc: func(event event.GenericEvent) bool {
return false
},
DeleteFunc: func(event event.DeleteEvent) bool {
return false
},
}
}
// IsDeleting is an alias for a predicate which checks if the passed object has a deletion timestamp.
var IsDeleting = gardenpredicate.IsDeleting
// AddTypePredicate returns a new slice which contains a type predicate and the given `predicates`.
// if more than one extensionTypes is given all given types are or combined
func AddTypePredicate(predicates []predicate.Predicate, extensionTypes ...string) []predicate.Predicate {
resultPredicates := make([]predicate.Predicate, 0, len(predicates)+1)
resultPredicates = append(resultPredicates, predicates...)
if len(extensionTypes) == 1 {
resultPredicates = append(resultPredicates, HasType(extensionTypes[0]))
return resultPredicates
}
orPreds := make([]predicate.Predicate, 0, len(extensionTypes))
for _, extensionType := range extensionTypes {
orPreds = append(orPreds, HasType(extensionType))
}
return append(resultPredicates, predicate.Or(orPreds...))
}
// HasPurpose filters the incoming Controlplanes for the given spec.purpose
func HasPurpose(purpose extensionsv1alpha1.Purpose) predicate.Predicate {
return FromMapper(MapperFunc(func(e event.GenericEvent) bool {
controlPlane, ok := e.Object.(*extensionsv1alpha1.ControlPlane)
if !ok {
return false
}
// needed because ControlPlane of type "normal" has the spec.purpose field not set
if controlPlane.Spec.Purpose == nil && purpose == extensionsv1alpha1.Normal {
return true
}
if controlPlane.Spec.Purpose == nil {
return false
}
return *controlPlane.Spec.Purpose == purpose
}), CreateTrigger, UpdateNewTrigger, DeleteTrigger, GenericTrigger)
}
// ClusterShootProviderType is a predicate for the provider type of the shoot in the cluster resource.
func ClusterShootProviderType(decoder runtime.Decoder, providerType string) predicate.Predicate {
f := func(obj client.Object) bool {
if obj == nil {
return false
}
cluster, ok := obj.(*extensionsv1alpha1.Cluster)
if !ok {
return false
}
shoot, err := extensionscontroller.ShootFromCluster(decoder, cluster)
if err != nil {
return false
}
return shoot.Spec.Provider.Type == providerType
}
return predicate.Funcs{
CreateFunc: func(event event.CreateEvent) bool {
return f(event.Object)
},
UpdateFunc: func(event event.UpdateEvent) bool {
return f(event.ObjectNew)
},
GenericFunc: func(event event.GenericEvent) bool {
return f(event.Object)
},
DeleteFunc: func(event event.DeleteEvent) bool {
return f(event.Object)
},
}
}
// GardenCoreProviderType is a predicate for the provider type of a `gardencore.Object` implementation.
func GardenCoreProviderType(providerType string) predicate.Predicate {
f := func(obj client.Object) bool {
if obj == nil {
return false
}
accessor, err := gardencore.Accessor(obj)
if err != nil {
return false
}
return accessor.GetProviderType() == providerType
}
return predicate.Funcs{
CreateFunc: func(event event.CreateEvent) bool {
return f(event.Object)
},
UpdateFunc: func(event event.UpdateEvent) bool {
return f(event.ObjectNew)
},
GenericFunc: func(event event.GenericEvent) bool {
return f(event.Object)
},
DeleteFunc: func(event event.DeleteEvent) bool {
return f(event.Object)
},
}
}
// ClusterShootKubernetesVersionForCSIMigrationAtLeast is a predicate for the kubernetes version of the shoot in the cluster resource.
func ClusterShootKubernetesVersionForCSIMigrationAtLeast(decoder runtime.Decoder, kubernetesVersion string) predicate.Predicate {
f := func(obj client.Object) bool {
if obj == nil {
return false
}
cluster, ok := obj.(*extensionsv1alpha1.Cluster)
if !ok {
return false
}
shoot, err := extensionscontroller.ShootFromCluster(decoder, cluster)
if err != nil {
return false
}
kubernetesVersionForCSIMigration := kubernetesVersion
if overwrite, ok := shoot.Annotations[extensionsv1alpha1.ShootAlphaCSIMigrationKubernetesVersion]; ok {
kubernetesVersionForCSIMigration = overwrite
}
constraint, err := version.CompareVersions(shoot.Spec.Kubernetes.Version, ">=", kubernetesVersionForCSIMigration)
if err != nil {
return false
}
return constraint
}
return predicate.Funcs{
CreateFunc: func(event event.CreateEvent) bool {
return f(event.Object)
},
UpdateFunc: func(event event.UpdateEvent) bool {
return f(event.ObjectNew)
},
GenericFunc: func(event event.GenericEvent) bool {
return f(event.Object)
},
DeleteFunc: func(event event.DeleteEvent) bool {
return f(event.Object)
},
}
}