67 lines
2.4 KiB
Go
67 lines
2.4 KiB
Go
/*
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Copyright 2022 The Karmada 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 spreadconstraint
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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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)
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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 = "SpreadConstraint"
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)
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// SpreadConstraint is a plugin that checks if spread property in the Cluster.Spec.
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type SpreadConstraint struct{}
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var _ framework.FilterPlugin = &SpreadConstraint{}
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// New instantiates the spreadconstraint plugin.
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func New() (framework.Plugin, error) {
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return &SpreadConstraint{}, nil
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}
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// Name returns the plugin name.
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func (p *SpreadConstraint) Name() string {
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return Name
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}
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// Filter checks if the cluster Provider/Zone/Region spread is null.
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func (p *SpreadConstraint) Filter(
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_ context.Context,
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bindingSpec *workv1alpha2.ResourceBindingSpec,
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_ *workv1alpha2.ResourceBindingStatus,
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cluster *clusterv1alpha1.Cluster,
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) *framework.Result {
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for _, spreadConstraint := range bindingSpec.Placement.SpreadConstraints {
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if spreadConstraint.SpreadByField == policyv1alpha1.SpreadByFieldProvider && cluster.Spec.Provider == "" {
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return framework.NewResult(framework.Unschedulable, "cluster(s) did not have provider property")
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} else if spreadConstraint.SpreadByField == policyv1alpha1.SpreadByFieldRegion && cluster.Spec.Region == "" {
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return framework.NewResult(framework.Unschedulable, "cluster(s) did not have region property")
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} else if spreadConstraint.SpreadByField == policyv1alpha1.SpreadByFieldZone && len(cluster.Spec.Zones) == 0 {
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return framework.NewResult(framework.Unschedulable, "cluster(s) did not have zones property")
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}
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}
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return framework.NewResult(framework.Success)
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}
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