95 lines
3.1 KiB
Go
95 lines
3.1 KiB
Go
/*
|
|
Copyright 2021 The Karmada Authors.
|
|
|
|
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 clusteraffinity
|
|
|
|
import (
|
|
"context"
|
|
|
|
clusterv1alpha1 "github.com/karmada-io/karmada/pkg/apis/cluster/v1alpha1"
|
|
policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
|
|
workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
|
|
"github.com/karmada-io/karmada/pkg/scheduler/framework"
|
|
"github.com/karmada-io/karmada/pkg/util"
|
|
)
|
|
|
|
const (
|
|
// Name is the name of the plugin used in the plugin registry and configurations.
|
|
Name = "ClusterAffinity"
|
|
)
|
|
|
|
// ClusterAffinity is a plugin that checks if a resource selector matches the cluster label.
|
|
type ClusterAffinity struct{}
|
|
|
|
var _ framework.FilterPlugin = &ClusterAffinity{}
|
|
var _ framework.ScorePlugin = &ClusterAffinity{}
|
|
|
|
// New instantiates the clusteraffinity plugin.
|
|
func New() (framework.Plugin, error) {
|
|
return &ClusterAffinity{}, nil
|
|
}
|
|
|
|
// Name returns the plugin name.
|
|
func (p *ClusterAffinity) Name() string {
|
|
return Name
|
|
}
|
|
|
|
// Filter checks if the cluster matched the placement cluster affinity constraint.
|
|
func (p *ClusterAffinity) Filter(
|
|
_ context.Context,
|
|
bindingSpec *workv1alpha2.ResourceBindingSpec,
|
|
bindingStatus *workv1alpha2.ResourceBindingStatus,
|
|
cluster *clusterv1alpha1.Cluster,
|
|
) *framework.Result {
|
|
var affinity *policyv1alpha1.ClusterAffinity
|
|
if bindingSpec.Placement.ClusterAffinity != nil {
|
|
affinity = bindingSpec.Placement.ClusterAffinity
|
|
} else {
|
|
for index, term := range bindingSpec.Placement.ClusterAffinities {
|
|
if term.AffinityName == bindingStatus.SchedulerObservedAffinityName {
|
|
affinity = &bindingSpec.Placement.ClusterAffinities[index].ClusterAffinity
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
if affinity != nil {
|
|
if util.ClusterMatches(cluster, *affinity) {
|
|
return framework.NewResult(framework.Success)
|
|
}
|
|
return framework.NewResult(framework.Unschedulable, "cluster(s) did not match the placement cluster affinity constraint")
|
|
}
|
|
|
|
// If no clusters specified and it is not excluded, mark it matched
|
|
return framework.NewResult(framework.Success)
|
|
}
|
|
|
|
// Score calculates the score on the candidate cluster.
|
|
func (p *ClusterAffinity) Score(_ context.Context,
|
|
_ *workv1alpha2.ResourceBindingSpec, _ *clusterv1alpha1.Cluster) (int64, *framework.Result) {
|
|
return framework.MinClusterScore, framework.NewResult(framework.Success)
|
|
}
|
|
|
|
// ScoreExtensions of the Score plugin.
|
|
func (p *ClusterAffinity) ScoreExtensions() framework.ScoreExtensions {
|
|
return p
|
|
}
|
|
|
|
// NormalizeScore normalizes the score for each candidate cluster.
|
|
func (p *ClusterAffinity) NormalizeScore(_ context.Context, _ framework.ClusterScoreList) *framework.Result {
|
|
return framework.NewResult(framework.Success)
|
|
}
|