forked from openshift/origin
/
autoscaling.go
63 lines (53 loc) · 2.16 KB
/
autoscaling.go
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package controller
import (
clientgoclientset "k8s.io/client-go/kubernetes"
kubeclientset "k8s.io/client-go/kubernetes"
hpacontroller "k8s.io/kubernetes/pkg/controller/podautoscaler"
hpametrics "k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
appstypedclient "github.com/openshift/client-go/apps/clientset/versioned/typed/apps/v1"
appsv1client "github.com/openshift/origin/pkg/apps/client/v1"
"github.com/openshift/origin/pkg/cmd/server/bootstrappolicy"
)
// NB: this is funky -- it's actually a Kubernetes controller, but we run it as an OpenShift controller in order
// to get a handle on OpenShift clients, so that our delegating scales getter can work.
type HorizontalPodAutoscalerControllerConfig struct {
HeapsterNamespace string
}
func (c *HorizontalPodAutoscalerControllerConfig) RunController(originCtx ControllerContext) (bool, error) {
hpaClientConfig, err := originCtx.ClientBuilder.Config(bootstrappolicy.InfraHorizontalPodAutoscalerControllerServiceAccountName)
if err != nil {
return true, err
}
hpaClient, err := kubeclientset.NewForConfig(hpaClientConfig)
if err != nil {
return false, err
}
appsClient, err := appstypedclient.NewForConfig(hpaClientConfig)
if err != nil {
return false, err
}
hpaEventsClient, err := clientgoclientset.NewForConfig(hpaClientConfig)
if err != nil {
return false, err
}
metricsClient := hpametrics.NewHeapsterMetricsClient(
hpaClient,
c.HeapsterNamespace,
"https",
"heapster",
"",
)
replicaCalc := hpacontroller.NewReplicaCalculator(metricsClient, hpaClient.Core())
delegatingScalesGetter := appsv1client.NewDelegatingScaleNamespacer(appsClient, hpaClient.ExtensionsV1beta1())
go hpacontroller.NewHorizontalController(
hpaEventsClient.Core(),
delegatingScalesGetter,
hpaClient.Autoscaling(),
replicaCalc,
originCtx.ExternalKubeInformers.Autoscaling().V1().HorizontalPodAutoscalers(),
originCtx.OpenshiftControllerOptions.HPAControllerOptions.SyncPeriod.Duration,
originCtx.OpenshiftControllerOptions.HPAControllerOptions.UpscaleForbiddenWindow.Duration,
originCtx.OpenshiftControllerOptions.HPAControllerOptions.DownscaleForbiddenWindow.Duration,
).Run(originCtx.Stop)
return true, nil
}