64 lines
2.2 KiB
Go
64 lines
2.2 KiB
Go
package clusteraffinity
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import (
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"context"
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clusterv1alpha1 "github.com/karmada-io/karmada/pkg/apis/cluster/v1alpha1"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
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"github.com/karmada-io/karmada/pkg/scheduler/framework"
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"github.com/karmada-io/karmada/pkg/util"
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)
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const (
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// Name is the name of the plugin used in the plugin registry and configurations.
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Name = "ClusterAffinity"
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)
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// ClusterAffinity is a plugin that checks if a resource selector matches the cluster label.
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type ClusterAffinity struct{}
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var _ framework.FilterPlugin = &ClusterAffinity{}
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var _ framework.ScorePlugin = &ClusterAffinity{}
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// New instantiates the clusteraffinity plugin.
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func New() (framework.Plugin, error) {
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return &ClusterAffinity{}, nil
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}
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// Name returns the plugin name.
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func (p *ClusterAffinity) Name() string {
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return Name
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}
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// Filter checks if the cluster matched the placement cluster affinity constraint.
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func (p *ClusterAffinity) Filter(ctx context.Context, placement *policyv1alpha1.Placement,
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bindingSpec *workv1alpha2.ResourceBindingSpec, cluster *clusterv1alpha1.Cluster) *framework.Result {
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affinity := placement.ClusterAffinity
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if affinity != nil {
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if util.ClusterMatches(cluster, *affinity) {
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return framework.NewResult(framework.Success)
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}
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return framework.NewResult(framework.Unschedulable, "cluster(s) didn't match the placement cluster affinity constraint")
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}
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// If no clusters specified and it is not excluded, mark it matched
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return framework.NewResult(framework.Success)
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}
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// Score calculates the score on the candidate cluster.
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func (p *ClusterAffinity) Score(ctx context.Context, placement *policyv1alpha1.Placement,
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spec *workv1alpha2.ResourceBindingSpec, cluster *clusterv1alpha1.Cluster) (int64, *framework.Result) {
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return framework.MinClusterScore, framework.NewResult(framework.Success)
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}
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// ScoreExtensions of the Score plugin.
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func (p *ClusterAffinity) ScoreExtensions() framework.ScoreExtensions {
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return p
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}
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// NormalizeScore normalizes the score for each candidate cluster.
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func (p *ClusterAffinity) NormalizeScore(ctx context.Context, scores framework.ClusterScoreList) *framework.Result {
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return framework.NewResult(framework.Success)
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}
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