88 lines
3.3 KiB
Go
88 lines
3.3 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package target
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import (
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"fmt"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/labels"
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vpa_types_v1beta1 "k8s.io/autoscaler/vertical-pod-autoscaler/pkg/apis/autoscaling.k8s.io/v1beta1"
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vpa_types_v1beta2 "k8s.io/autoscaler/vertical-pod-autoscaler/pkg/apis/autoscaling.k8s.io/v1beta2"
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vpa_clientset "k8s.io/autoscaler/vertical-pod-autoscaler/pkg/client/clientset/versioned"
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vpa_lister_v1beta1 "k8s.io/autoscaler/vertical-pod-autoscaler/pkg/client/listers/autoscaling.k8s.io/v1beta1"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/cache"
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"k8s.io/klog"
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"k8s.io/kubernetes/pkg/apis/core"
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)
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type beta1TargetSelectorFetcher struct {
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vpaLister vpa_lister_v1beta1.VerticalPodAutoscalerLister
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}
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// NewBeta1TargetSelectorFetcher returns new instance of VpaTargetSelectorFetcher that uses selector from deprecated v1beta1
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func NewBeta1TargetSelectorFetcher(config *rest.Config) VpaTargetSelectorFetcher {
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vpaClient := vpa_clientset.NewForConfigOrDie(config)
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return &beta1TargetSelectorFetcher{
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vpaLister: newAllVpasLister(vpaClient, make(chan struct{})),
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}
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}
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func (f *beta1TargetSelectorFetcher) Fetch(vpa *vpa_types_v1beta2.VerticalPodAutoscaler) (labels.Selector, error) {
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list, err := f.vpaLister.List(labels.Everything())
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if err != nil {
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return nil, fmt.Errorf("Failed to list v1beta1 VPAs. Reason: %v", err)
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}
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for _, beta1vpa := range list {
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if beta1vpa.Namespace == vpa.Namespace && beta1vpa.Name == vpa.Name && beta1vpa.UID == vpa.UID {
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if beta1vpa.Spec.Selector == nil {
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return nil, fmt.Errorf("v1beta1 selector not found")
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}
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selector, err := metav1.LabelSelectorAsSelector(beta1vpa.Spec.Selector)
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if err != nil {
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// Intentionally ignore error
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return labels.Nothing(), nil
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}
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klog.Infof("Found deprecated label selector for VPA %s/%s", vpa.Namespace, vpa.Name)
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return selector, nil
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}
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}
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return nil, fmt.Errorf("v1beta1 VPA not found")
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}
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func newAllVpasLister(vpaClient *vpa_clientset.Clientset, stopChannel <-chan struct{}) vpa_lister_v1beta1.VerticalPodAutoscalerLister {
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vpaListWatch := cache.NewListWatchFromClient(vpaClient.AutoscalingV1beta1().RESTClient(), "verticalpodautoscalers", core.NamespaceAll, fields.Everything())
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indexer, controller := cache.NewIndexerInformer(vpaListWatch,
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&vpa_types_v1beta1.VerticalPodAutoscaler{},
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1*time.Hour,
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&cache.ResourceEventHandlerFuncs{},
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cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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vpaLister := vpa_lister_v1beta1.NewVerticalPodAutoscalerLister(indexer)
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go controller.Run(stopChannel)
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if !cache.WaitForCacheSync(make(chan struct{}), controller.HasSynced) {
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klog.Fatalf("Failed to sync VPA v1beta1 cache during initialization")
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} else {
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klog.Info("Initial VPA v1beta1 synced successfully")
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}
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return vpaLister
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}
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