capacityreservation.go•3.92 kB
/*
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 nodeclass
import (
"context"
"fmt"
"sort"
"time"
ec2types "github.com/aws/aws-sdk-go-v2/service/ec2/types"
"github.com/awslabs/operatorpkg/singleton"
"github.com/samber/lo"
"go.uber.org/multierr"
"k8s.io/utils/clock"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/karpenter/pkg/utils/pretty"
v1 "github.com/aws/karpenter-provider-aws/pkg/apis/v1"
"github.com/aws/karpenter-provider-aws/pkg/providers/capacityreservation"
)
const capacityReservationPollPeriod = time.Minute
type CapacityReservation struct {
provider capacityreservation.Provider
clk clock.Clock
cm *pretty.ChangeMonitor
}
func NewCapacityReservationReconciler(clk clock.Clock, provider capacityreservation.Provider) *CapacityReservation {
return &CapacityReservation{
provider: provider,
clk: clk,
cm: pretty.NewChangeMonitor(),
}
}
func (c *CapacityReservation) Reconcile(ctx context.Context, nc *v1.EC2NodeClass) (reconcile.Result, error) {
reservations, err := c.provider.List(ctx, nc.Spec.CapacityReservationSelectorTerms...)
if err != nil {
return reconcile.Result{}, fmt.Errorf("getting capacity reservations, %w", err)
}
if len(reservations) == 0 {
nc.Status.CapacityReservations = nil
nc.StatusConditions().SetTrue(v1.ConditionTypeCapacityReservationsReady)
return reconcile.Result{RequeueAfter: capacityReservationPollPeriod}, nil
}
if ids := lo.Map(reservations, func(r *ec2types.CapacityReservation, _ int) string {
return *r.CapacityReservationId
}); c.cm.HasChanged(nc.Name, ids) {
log.FromContext(ctx).V(1).WithValues("ids", ids).Info("discovered capacity reservations")
}
sort.Slice(reservations, func(i, j int) bool {
return *reservations[i].CapacityReservationId < *reservations[j].CapacityReservationId
})
errors := []error{}
nc.Status.CapacityReservations = []v1.CapacityReservation{}
for _, r := range reservations {
reservation, err := v1.CapacityReservationFromEC2(c.clk, r)
if err != nil {
errors = append(errors, err)
continue
}
nc.Status.CapacityReservations = append(nc.Status.CapacityReservations, reservation)
}
if len(errors) != 0 {
log.FromContext(ctx).WithValues(
"error-count", len(errors),
"total-count", len(reservations),
).Error(multierr.Combine(errors...), "failed to parse discovered capacity reservations")
}
nc.StatusConditions().SetTrue(v1.ConditionTypeCapacityReservationsReady)
return reconcile.Result{RequeueAfter: c.requeueAfter(reservations...)}, nil
}
// requeueAfter determines the duration until the next target reconciliation time based on the provided reservations. If
// any reservations are expected to expire before we would typically requeue, the duration will be based on the
// nearest expiration time.
func (c *CapacityReservation) requeueAfter(reservations ...*ec2types.CapacityReservation) time.Duration {
var next *time.Time
for _, reservation := range reservations {
if reservation.EndDate == nil {
continue
}
if next == nil {
next = reservation.EndDate
continue
}
if next.After(*reservation.EndDate) {
next = reservation.EndDate
}
}
if next == nil {
return capacityReservationPollPeriod
}
if d := next.Sub(c.clk.Now()); d < capacityReservationPollPeriod {
return lo.Ternary(d < 0, singleton.RequeueImmediately, d)
}
return capacityReservationPollPeriod
}