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eventhandler_bastion.go
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/
eventhandler_bastion.go
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// Copyright 2021 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 graph
import (
"context"
"time"
apiequality "k8s.io/apimachinery/pkg/api/equality"
toolscache "k8s.io/client-go/tools/cache"
"sigs.k8s.io/controller-runtime/pkg/cache"
operationsv1alpha1 "github.com/gardener/gardener/pkg/apis/operations/v1alpha1"
)
func (g *graph) setupBastionWatch(_ context.Context, informer cache.Informer) error {
_, err := informer.AddEventHandler(toolscache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
bastion, ok := obj.(*operationsv1alpha1.Bastion)
if !ok {
return
}
g.handleBastionCreateOrUpdate(bastion)
},
UpdateFunc: func(oldObj, newObj interface{}) {
oldBastion, ok := oldObj.(*operationsv1alpha1.Bastion)
if !ok {
return
}
newBastion, ok := newObj.(*operationsv1alpha1.Bastion)
if !ok {
return
}
if !apiequality.Semantic.DeepEqual(oldBastion.Spec.SeedName, newBastion.Spec.SeedName) {
g.handleBastionCreateOrUpdate(newBastion)
}
},
DeleteFunc: func(obj interface{}) {
if tombstone, ok := obj.(toolscache.DeletedFinalStateUnknown); ok {
obj = tombstone.Obj
}
bastion, ok := obj.(*operationsv1alpha1.Bastion)
if !ok {
return
}
g.handleBastionDelete(bastion)
},
})
return err
}
func (g *graph) handleBastionCreateOrUpdate(bastion *operationsv1alpha1.Bastion) {
start := time.Now()
defer func() {
metricUpdateDuration.WithLabelValues("Bastion", "CreateOrUpdate").Observe(time.Since(start).Seconds())
}()
g.lock.Lock()
defer g.lock.Unlock()
g.deleteVertex(VertexTypeBastion, bastion.Namespace, bastion.Name)
if bastion.Spec.SeedName != nil {
bastionVertex := g.getOrCreateVertex(VertexTypeBastion, bastion.Namespace, bastion.Name)
seedVertex := g.getOrCreateVertex(VertexTypeSeed, "", *bastion.Spec.SeedName)
g.addEdge(bastionVertex, seedVertex)
}
}
func (g *graph) handleBastionDelete(bastion *operationsv1alpha1.Bastion) {
start := time.Now()
defer func() {
metricUpdateDuration.WithLabelValues("Bastion", "Delete").Observe(time.Since(start).Seconds())
}()
g.lock.Lock()
defer g.lock.Unlock()
g.deleteVertex(VertexTypeBastion, bastion.Namespace, bastion.Name)
}