67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
package clusterlocality
|
|
|
|
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 = "ClusterLocality"
|
|
)
|
|
|
|
// ClusterLocality is a score plugin that favors cluster that already have requested.
|
|
type ClusterLocality struct{}
|
|
|
|
var _ framework.ScorePlugin = &ClusterLocality{}
|
|
|
|
// New instantiates the clusteraffinity plugin.
|
|
func New() framework.Plugin {
|
|
return &ClusterLocality{}
|
|
}
|
|
|
|
// Name returns the plugin name.
|
|
func (p *ClusterLocality) Name() string {
|
|
return Name
|
|
}
|
|
|
|
// Score calculates the score on the candidate cluster.
|
|
// if cluster object is exist in resourceBinding.Spec.Clusters, Score is 100, otherwise it is 0.
|
|
func (p *ClusterLocality) Score(ctx context.Context, placement *policyv1alpha1.Placement,
|
|
spec *workv1alpha2.ResourceBindingSpec, cluster *clusterv1alpha1.Cluster) (int64, *framework.Result) {
|
|
if len(spec.Clusters) == 0 {
|
|
return framework.MinClusterScore, framework.NewResult(framework.Success)
|
|
}
|
|
|
|
replicas := util.GetSumOfReplicas(spec.Clusters)
|
|
if replicas <= 0 {
|
|
return framework.MinClusterScore, framework.NewResult(framework.Success)
|
|
}
|
|
|
|
if isClusterScheduled(cluster.Name, spec.Clusters) {
|
|
return framework.MaxClusterScore, framework.NewResult(framework.Success)
|
|
}
|
|
|
|
return framework.MinClusterScore, framework.NewResult(framework.Success)
|
|
}
|
|
|
|
// ScoreExtensions of the Score plugin.
|
|
func (p *ClusterLocality) ScoreExtensions() framework.ScoreExtensions {
|
|
return nil
|
|
}
|
|
|
|
func isClusterScheduled(candidate string, schedulerClusters []workv1alpha2.TargetCluster) bool {
|
|
for _, cluster := range schedulerClusters {
|
|
if candidate == cluster.Name {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|