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0b27f25252
- Add PreEnqueuePlugin to Scheduler Framework - Implement PreEnqueuePlugin in scheduler queue - Implementation of SchedulingGates plugin - Metrics
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2022 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 schedulinggates
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import (
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"context"
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"fmt"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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"k8s.io/kubernetes/pkg/scheduler/framework/plugins/feature"
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"k8s.io/kubernetes/pkg/scheduler/framework/plugins/names"
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)
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// Name of the plugin used in the plugin registry and configurations.
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const Name = names.SchedulingGates
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// SchedulingGates checks if a Pod carries .spec.schedulingGates.
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type SchedulingGates struct {
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enablePodSchedulingReadiness bool
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}
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var _ framework.PreEnqueuePlugin = &SchedulingGates{}
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var _ framework.EnqueueExtensions = &SchedulingGates{}
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func (pl *SchedulingGates) Name() string {
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return Name
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}
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func (pl *SchedulingGates) PreEnqueue(ctx context.Context, p *v1.Pod) *framework.Status {
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if !pl.enablePodSchedulingReadiness || len(p.Spec.SchedulingGates) == 0 {
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return nil
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}
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var gates []string
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for _, gate := range p.Spec.SchedulingGates {
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gates = append(gates, gate.Name)
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}
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return framework.NewStatus(framework.UnschedulableAndUnresolvable, fmt.Sprintf("waiting for scheduling gates: %v", gates))
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}
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// EventsToRegister returns the possible events that may make a Pod
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// failed by this plugin schedulable.
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func (pl *SchedulingGates) EventsToRegister() []framework.ClusterEvent {
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return []framework.ClusterEvent{
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{Resource: framework.Pod, ActionType: framework.Update},
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}
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}
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// New initializes a new plugin and returns it.
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func New(_ runtime.Object, _ framework.Handle, fts feature.Features) (framework.Plugin, error) {
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return &SchedulingGates{enablePodSchedulingReadiness: fts.EnablePodSchedulingReadiness}, nil
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}
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