mirror of https://github.com/k3s-io/k3s
73 lines
2.4 KiB
Go
73 lines
2.4 KiB
Go
/*
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Copyright 2016 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 app implements a server that runs a set of active
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// components. This includes replication controllers, service endpoints and
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// nodes.
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//
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package app
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import (
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"net/http"
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"k8s.io/klog"
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"k8s.io/apimachinery/pkg/runtime/schema"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/client-go/dynamic"
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"k8s.io/client-go/scale"
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"k8s.io/kubernetes/pkg/controller/disruption"
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kubefeatures "k8s.io/kubernetes/pkg/features"
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)
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func startDisruptionController(ctx ControllerContext) (http.Handler, bool, error) {
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var group = "policy"
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var version = "v1beta1"
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var resource = "poddisruptionbudgets"
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if !ctx.AvailableResources[schema.GroupVersionResource{Group: group, Version: version, Resource: resource}] {
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klog.Infof(
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"Refusing to start disruption because resource %q in group %q is not available.",
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resource, group+"/"+version)
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return nil, false, nil
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}
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if !utilfeature.DefaultFeatureGate.Enabled(kubefeatures.PodDisruptionBudget) {
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klog.Infof("Refusing to start disruption because the PodDisruptionBudget feature is disabled")
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return nil, false, nil
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}
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client := ctx.ClientBuilder.ClientOrDie("disruption-controller")
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config := ctx.ClientBuilder.ConfigOrDie("disruption-controller")
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scaleKindResolver := scale.NewDiscoveryScaleKindResolver(client.Discovery())
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scaleClient, err := scale.NewForConfig(config, ctx.RESTMapper, dynamic.LegacyAPIPathResolverFunc, scaleKindResolver)
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if err != nil {
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return nil, false, err
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}
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go disruption.NewDisruptionController(
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ctx.InformerFactory.Core().V1().Pods(),
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ctx.InformerFactory.Policy().V1beta1().PodDisruptionBudgets(),
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ctx.InformerFactory.Core().V1().ReplicationControllers(),
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ctx.InformerFactory.Apps().V1().ReplicaSets(),
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ctx.InformerFactory.Apps().V1().Deployments(),
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ctx.InformerFactory.Apps().V1().StatefulSets(),
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client,
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ctx.RESTMapper,
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scaleClient,
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).Run(ctx.Stop)
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return nil, true, nil
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}
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