Changes to folder structure to allow multigroups and changed go mod name (#2105)
* Changed folder structure to allow multi group registration * included actions.github.com directory for resources and controllers * updated go module to actions/actions-runner-controller * publish arc packages under actions-runner-controller * Update charts/actions-runner-controller/docs/UPGRADING.md Co-authored-by: Yusuke Kuoka <[email protected]>
This commit is contained in:
co-authored by
Yusuke Kuoka
parent
086f9fd2d6
commit
aa6dab5a9a
@@ -0,0 +1,554 @@
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/*
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Copyright 2020 The actions-runner-controller 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 controllers
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import (
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"context"
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"fmt"
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"reflect"
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"time"
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corev1 "k8s.io/api/core/v1"
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"github.com/go-logr/logr"
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kerrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/tools/record"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"github.com/actions/actions-runner-controller/apis/actions.summerwind.net/v1alpha1"
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"github.com/actions/actions-runner-controller/controllers/actions.summerwind.net/metrics"
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arcgithub "github.com/actions/actions-runner-controller/github"
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)
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const (
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DefaultScaleDownDelay = 10 * time.Minute
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)
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// HorizontalRunnerAutoscalerReconciler reconciles a HorizontalRunnerAutoscaler object
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type HorizontalRunnerAutoscalerReconciler struct {
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client.Client
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GitHubClient *MultiGitHubClient
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Log logr.Logger
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Recorder record.EventRecorder
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Scheme *runtime.Scheme
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DefaultScaleDownDelay time.Duration
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Name string
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}
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const defaultReplicas = 1
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// +kubebuilder:rbac:groups=actions.summerwind.dev,resources=runnerdeployments,verbs=get;list;watch;update;patch
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// +kubebuilder:rbac:groups=actions.summerwind.dev,resources=horizontalrunnerautoscalers,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=actions.summerwind.dev,resources=horizontalrunnerautoscalers/finalizers,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=actions.summerwind.dev,resources=horizontalrunnerautoscalers/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=core,resources=events,verbs=create;patch
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func (r *HorizontalRunnerAutoscalerReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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log := r.Log.WithValues("horizontalrunnerautoscaler", req.NamespacedName)
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var hra v1alpha1.HorizontalRunnerAutoscaler
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if err := r.Get(ctx, req.NamespacedName, &hra); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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if !hra.ObjectMeta.DeletionTimestamp.IsZero() {
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r.GitHubClient.DeinitForHRA(&hra)
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return ctrl.Result{}, nil
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}
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metrics.SetHorizontalRunnerAutoscalerSpec(hra.ObjectMeta, hra.Spec)
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kind := hra.Spec.ScaleTargetRef.Kind
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switch kind {
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case "", "RunnerDeployment":
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var rd v1alpha1.RunnerDeployment
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if err := r.Get(ctx, types.NamespacedName{
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Namespace: req.Namespace,
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Name: hra.Spec.ScaleTargetRef.Name,
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}, &rd); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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if !rd.ObjectMeta.DeletionTimestamp.IsZero() {
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return ctrl.Result{}, nil
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}
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st := r.scaleTargetFromRD(ctx, rd)
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return r.reconcile(ctx, req, log, hra, st, func(newDesiredReplicas int) error {
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currentDesiredReplicas := getIntOrDefault(rd.Spec.Replicas, defaultReplicas)
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ephemeral := rd.Spec.Template.Spec.Ephemeral == nil || *rd.Spec.Template.Spec.Ephemeral
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var effectiveTime *time.Time
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for _, r := range hra.Spec.CapacityReservations {
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t := r.EffectiveTime
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if effectiveTime == nil || effectiveTime.Before(t.Time) {
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effectiveTime = &t.Time
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}
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}
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// Please add more conditions that we can in-place update the newest runnerreplicaset without disruption
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if currentDesiredReplicas != newDesiredReplicas {
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copy := rd.DeepCopy()
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copy.Spec.Replicas = &newDesiredReplicas
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if ephemeral && effectiveTime != nil {
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copy.Spec.EffectiveTime = &metav1.Time{Time: *effectiveTime}
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}
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if err := r.Client.Patch(ctx, copy, client.MergeFrom(&rd)); err != nil {
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return fmt.Errorf("patching runnerdeployment to have %d replicas: %w", newDesiredReplicas, err)
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}
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} else if ephemeral && effectiveTime != nil {
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copy := rd.DeepCopy()
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copy.Spec.EffectiveTime = &metav1.Time{Time: *effectiveTime}
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if err := r.Client.Patch(ctx, copy, client.MergeFrom(&rd)); err != nil {
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return fmt.Errorf("patching runnerdeployment to have %d replicas: %w", newDesiredReplicas, err)
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}
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}
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return nil
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})
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case "RunnerSet":
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var rs v1alpha1.RunnerSet
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if err := r.Get(ctx, types.NamespacedName{
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Namespace: req.Namespace,
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Name: hra.Spec.ScaleTargetRef.Name,
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}, &rs); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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if !rs.ObjectMeta.DeletionTimestamp.IsZero() {
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return ctrl.Result{}, nil
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}
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var replicas *int
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if rs.Spec.Replicas != nil {
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v := int(*rs.Spec.Replicas)
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replicas = &v
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}
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st := scaleTarget{
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st: rs.Name,
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kind: "runnerset",
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enterprise: rs.Spec.Enterprise,
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org: rs.Spec.Organization,
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repo: rs.Spec.Repository,
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replicas: replicas,
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labels: rs.Spec.RunnerConfig.Labels,
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getRunnerMap: func() (map[string]struct{}, error) {
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// return the list of runners in namespace. Horizontal Runner Autoscaler should only be responsible for scaling resources in its own ns.
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var runnerPodList corev1.PodList
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var opts []client.ListOption
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opts = append(opts, client.InNamespace(rs.Namespace))
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selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector)
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if err != nil {
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return nil, err
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}
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opts = append(opts, client.MatchingLabelsSelector{Selector: selector})
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r.Log.V(2).Info("Finding runnerset's runner pods with selector", "ns", rs.Namespace)
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if err := r.List(
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ctx,
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&runnerPodList,
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opts...,
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); err != nil {
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if !kerrors.IsNotFound(err) {
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return nil, err
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}
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}
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runnerMap := make(map[string]struct{})
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for _, items := range runnerPodList.Items {
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runnerMap[items.Name] = struct{}{}
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}
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return runnerMap, nil
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},
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}
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return r.reconcile(ctx, req, log, hra, st, func(newDesiredReplicas int) error {
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var replicas *int
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if rs.Spec.Replicas != nil {
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v := int(*rs.Spec.Replicas)
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replicas = &v
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}
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currentDesiredReplicas := getIntOrDefault(replicas, defaultReplicas)
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ephemeral := rs.Spec.Ephemeral == nil || *rs.Spec.Ephemeral
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var effectiveTime *time.Time
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for _, r := range hra.Spec.CapacityReservations {
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t := r.EffectiveTime
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if effectiveTime == nil || effectiveTime.Before(t.Time) {
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effectiveTime = &t.Time
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}
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}
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if currentDesiredReplicas != newDesiredReplicas {
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copy := rs.DeepCopy()
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v := int32(newDesiredReplicas)
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copy.Spec.Replicas = &v
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if ephemeral && effectiveTime != nil {
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copy.Spec.EffectiveTime = &metav1.Time{Time: *effectiveTime}
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}
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if err := r.Client.Patch(ctx, copy, client.MergeFrom(&rs)); err != nil {
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return fmt.Errorf("patching runnerset to have %d replicas: %w", newDesiredReplicas, err)
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}
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} else if ephemeral && effectiveTime != nil {
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copy := rs.DeepCopy()
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copy.Spec.EffectiveTime = &metav1.Time{Time: *effectiveTime}
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if err := r.Client.Patch(ctx, copy, client.MergeFrom(&rs)); err != nil {
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return fmt.Errorf("patching runnerset to have %d replicas: %w", newDesiredReplicas, err)
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}
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}
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return nil
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})
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}
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log.Info(fmt.Sprintf("Unsupported scale target %s %s: kind %s is not supported. valid kinds are %s and %s", kind, hra.Spec.ScaleTargetRef.Name, kind, "RunnerDeployment", "RunnerSet"))
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return ctrl.Result{}, nil
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}
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func (r *HorizontalRunnerAutoscalerReconciler) scaleTargetFromRD(ctx context.Context, rd v1alpha1.RunnerDeployment) scaleTarget {
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st := scaleTarget{
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st: rd.Name,
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kind: "runnerdeployment",
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enterprise: rd.Spec.Template.Spec.Enterprise,
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org: rd.Spec.Template.Spec.Organization,
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repo: rd.Spec.Template.Spec.Repository,
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replicas: rd.Spec.Replicas,
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labels: rd.Spec.Template.Spec.RunnerConfig.Labels,
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getRunnerMap: func() (map[string]struct{}, error) {
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// return the list of runners in namespace. Horizontal Runner Autoscaler should only be responsible for scaling resources in its own ns.
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var runnerList v1alpha1.RunnerList
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var opts []client.ListOption
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opts = append(opts, client.InNamespace(rd.Namespace))
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selector, err := metav1.LabelSelectorAsSelector(getSelector(&rd))
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if err != nil {
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return nil, err
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}
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opts = append(opts, client.MatchingLabelsSelector{Selector: selector})
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r.Log.V(2).Info("Finding runners with selector", "ns", rd.Namespace)
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if err := r.List(
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ctx,
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&runnerList,
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opts...,
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); err != nil {
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if !kerrors.IsNotFound(err) {
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return nil, err
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}
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}
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runnerMap := make(map[string]struct{})
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for _, items := range runnerList.Items {
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runnerMap[items.Name] = struct{}{}
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}
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return runnerMap, nil
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},
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}
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return st
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}
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type scaleTarget struct {
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st, kind string
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enterprise, repo, org string
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replicas *int
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labels []string
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getRunnerMap func() (map[string]struct{}, error)
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}
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func (r *HorizontalRunnerAutoscalerReconciler) reconcile(ctx context.Context, req ctrl.Request, log logr.Logger, hra v1alpha1.HorizontalRunnerAutoscaler, st scaleTarget, updatedDesiredReplicas func(int) error) (ctrl.Result, error) {
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now := time.Now()
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minReplicas, active, upcoming, err := r.getMinReplicas(log, now, hra)
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if err != nil {
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log.Error(err, "Could not compute min replicas")
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return ctrl.Result{}, err
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}
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ghc, err := r.GitHubClient.InitForHRA(context.Background(), &hra)
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if err != nil {
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return ctrl.Result{}, err
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}
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newDesiredReplicas, err := r.computeReplicasWithCache(ghc, log, now, st, hra, minReplicas)
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if err != nil {
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r.Recorder.Event(&hra, corev1.EventTypeNormal, "RunnerAutoscalingFailure", err.Error())
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log.Error(err, "Could not compute replicas")
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return ctrl.Result{}, err
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}
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if err := updatedDesiredReplicas(newDesiredReplicas); err != nil {
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return ctrl.Result{}, err
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}
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updated := hra.DeepCopy()
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if hra.Status.DesiredReplicas == nil || *hra.Status.DesiredReplicas != newDesiredReplicas {
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if (hra.Status.DesiredReplicas == nil && newDesiredReplicas > 1) ||
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(hra.Status.DesiredReplicas != nil && newDesiredReplicas > *hra.Status.DesiredReplicas) {
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updated.Status.LastSuccessfulScaleOutTime = &metav1.Time{Time: time.Now()}
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}
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updated.Status.DesiredReplicas = &newDesiredReplicas
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}
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var overridesSummary string
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if (active != nil && upcoming == nil) || (active != nil && upcoming != nil && active.Period.EndTime.Before(upcoming.Period.StartTime)) {
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after := defaultReplicas
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if hra.Spec.MinReplicas != nil && *hra.Spec.MinReplicas >= 0 {
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after = *hra.Spec.MinReplicas
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}
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overridesSummary = fmt.Sprintf("min=%d time=%s", after, active.Period.EndTime)
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}
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if active == nil && upcoming != nil || (active != nil && upcoming != nil && active.Period.EndTime.After(upcoming.Period.StartTime)) {
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if upcoming.ScheduledOverride.MinReplicas != nil {
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overridesSummary = fmt.Sprintf("min=%d time=%s", *upcoming.ScheduledOverride.MinReplicas, upcoming.Period.StartTime)
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}
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}
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if overridesSummary != "" {
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updated.Status.ScheduledOverridesSummary = &overridesSummary
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} else {
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updated.Status.ScheduledOverridesSummary = nil
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}
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if !reflect.DeepEqual(hra.Status, updated.Status) {
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metrics.SetHorizontalRunnerAutoscalerStatus(updated.ObjectMeta, updated.Status)
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if err := r.Status().Patch(ctx, updated, client.MergeFrom(&hra)); err != nil {
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return ctrl.Result{}, fmt.Errorf("patching horizontalrunnerautoscaler status: %w", err)
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}
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}
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return ctrl.Result{}, nil
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}
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func (r *HorizontalRunnerAutoscalerReconciler) SetupWithManager(mgr ctrl.Manager) error {
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name := "horizontalrunnerautoscaler-controller"
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if r.Name != "" {
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name = r.Name
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}
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r.Recorder = mgr.GetEventRecorderFor(name)
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return ctrl.NewControllerManagedBy(mgr).
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For(&v1alpha1.HorizontalRunnerAutoscaler{}).
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Named(name).
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Complete(r)
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}
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type Override struct {
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ScheduledOverride v1alpha1.ScheduledOverride
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Period Period
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}
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func (r *HorizontalRunnerAutoscalerReconciler) matchScheduledOverrides(log logr.Logger, now time.Time, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, *Override, *Override, error) {
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var minReplicas *int
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var active, upcoming *Override
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for _, o := range hra.Spec.ScheduledOverrides {
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log.V(1).Info(
|
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"Checking scheduled override",
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"now", now,
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"startTime", o.StartTime,
|
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"endTime", o.EndTime,
|
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"frequency", o.RecurrenceRule.Frequency,
|
||||
"untilTime", o.RecurrenceRule.UntilTime,
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)
|
||||
|
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a, u, err := MatchSchedule(
|
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now, o.StartTime.Time, o.EndTime.Time,
|
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RecurrenceRule{
|
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Frequency: o.RecurrenceRule.Frequency,
|
||||
UntilTime: o.RecurrenceRule.UntilTime.Time,
|
||||
},
|
||||
)
|
||||
if err != nil {
|
||||
return minReplicas, nil, nil, err
|
||||
}
|
||||
|
||||
// Use the first when there are two or more active scheduled overrides,
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// as the spec defines that the earlier scheduled override is prioritized higher than later ones.
|
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if a != nil && active == nil {
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active = &Override{Period: *a, ScheduledOverride: o}
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|
||||
if o.MinReplicas != nil {
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minReplicas = o.MinReplicas
|
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|
||||
log.V(1).Info(
|
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"Found active scheduled override",
|
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"activeStartTime", a.StartTime,
|
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"activeEndTime", a.EndTime,
|
||||
"activeMinReplicas", minReplicas,
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||||
)
|
||||
}
|
||||
}
|
||||
|
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if u != nil && (upcoming == nil || u.StartTime.Before(upcoming.Period.StartTime)) {
|
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upcoming = &Override{Period: *u, ScheduledOverride: o}
|
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|
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log.V(1).Info(
|
||||
"Found upcoming scheduled override",
|
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"upcomingStartTime", u.StartTime,
|
||||
"upcomingEndTime", u.EndTime,
|
||||
"upcomingMinReplicas", o.MinReplicas,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
return minReplicas, active, upcoming, nil
|
||||
}
|
||||
|
||||
func (r *HorizontalRunnerAutoscalerReconciler) getMinReplicas(log logr.Logger, now time.Time, hra v1alpha1.HorizontalRunnerAutoscaler) (int, *Override, *Override, error) {
|
||||
minReplicas := defaultReplicas
|
||||
if hra.Spec.MinReplicas != nil && *hra.Spec.MinReplicas >= 0 {
|
||||
minReplicas = *hra.Spec.MinReplicas
|
||||
}
|
||||
|
||||
m, active, upcoming, err := r.matchScheduledOverrides(log, now, hra)
|
||||
if err != nil {
|
||||
return 0, nil, nil, err
|
||||
} else if m != nil {
|
||||
minReplicas = *m
|
||||
}
|
||||
|
||||
return minReplicas, active, upcoming, nil
|
||||
}
|
||||
|
||||
func (r *HorizontalRunnerAutoscalerReconciler) computeReplicasWithCache(ghc *arcgithub.Client, log logr.Logger, now time.Time, st scaleTarget, hra v1alpha1.HorizontalRunnerAutoscaler, minReplicas int) (int, error) {
|
||||
var suggestedReplicas int
|
||||
|
||||
v, err := r.suggestDesiredReplicas(ghc, st, hra)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
if v == nil {
|
||||
suggestedReplicas = minReplicas
|
||||
} else {
|
||||
suggestedReplicas = *v
|
||||
}
|
||||
|
||||
var reserved int
|
||||
|
||||
for _, reservation := range hra.Spec.CapacityReservations {
|
||||
if reservation.ExpirationTime.Time.After(now) {
|
||||
reserved += reservation.Replicas
|
||||
}
|
||||
}
|
||||
|
||||
newDesiredReplicas := suggestedReplicas + reserved
|
||||
|
||||
if newDesiredReplicas < minReplicas {
|
||||
newDesiredReplicas = minReplicas
|
||||
} else if hra.Spec.MaxReplicas != nil && newDesiredReplicas > *hra.Spec.MaxReplicas {
|
||||
newDesiredReplicas = *hra.Spec.MaxReplicas
|
||||
}
|
||||
|
||||
//
|
||||
// Delay scaling-down for ScaleDownDelaySecondsAfterScaleUp or DefaultScaleDownDelay
|
||||
//
|
||||
|
||||
var scaleDownDelay time.Duration
|
||||
|
||||
if hra.Spec.ScaleDownDelaySecondsAfterScaleUp != nil {
|
||||
scaleDownDelay = time.Duration(*hra.Spec.ScaleDownDelaySecondsAfterScaleUp) * time.Second
|
||||
} else {
|
||||
scaleDownDelay = r.DefaultScaleDownDelay
|
||||
}
|
||||
|
||||
var scaleDownDelayUntil *time.Time
|
||||
|
||||
if hra.Status.DesiredReplicas == nil ||
|
||||
*hra.Status.DesiredReplicas < newDesiredReplicas ||
|
||||
hra.Status.LastSuccessfulScaleOutTime == nil {
|
||||
|
||||
} else if hra.Status.LastSuccessfulScaleOutTime != nil {
|
||||
t := hra.Status.LastSuccessfulScaleOutTime.Add(scaleDownDelay)
|
||||
|
||||
// ScaleDownDelay is not passed
|
||||
if t.After(now) {
|
||||
scaleDownDelayUntil = &t
|
||||
newDesiredReplicas = *hra.Status.DesiredReplicas
|
||||
}
|
||||
} else {
|
||||
newDesiredReplicas = *hra.Status.DesiredReplicas
|
||||
}
|
||||
|
||||
//
|
||||
// Logs various numbers for monitoring and debugging purpose
|
||||
//
|
||||
|
||||
kvs := []interface{}{
|
||||
"suggested", suggestedReplicas,
|
||||
"reserved", reserved,
|
||||
"min", minReplicas,
|
||||
}
|
||||
|
||||
if maxReplicas := hra.Spec.MaxReplicas; maxReplicas != nil {
|
||||
kvs = append(kvs, "max", *maxReplicas)
|
||||
}
|
||||
|
||||
if scaleDownDelayUntil != nil {
|
||||
kvs = append(kvs, "last_scale_up_time", *hra.Status.LastSuccessfulScaleOutTime)
|
||||
kvs = append(kvs, "scale_down_delay_until", scaleDownDelayUntil)
|
||||
}
|
||||
|
||||
log.V(1).Info(fmt.Sprintf("Calculated desired replicas of %d", newDesiredReplicas),
|
||||
kvs...,
|
||||
)
|
||||
|
||||
return newDesiredReplicas, nil
|
||||
}
|
||||
Reference in New Issue
Block a user