44 lines
1.7 KiB
Go
44 lines
1.7 KiB
Go
package helper
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import (
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"fmt"
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"k8s.io/klog/v2"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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)
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// DenyReasonResourceSelectorsModify constructs a reason indicating that modify ResourceSelectors is not allowed.
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const DenyReasonResourceSelectorsModify = "modify ResourceSelectors is forbidden"
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// SetDefaultSpreadConstraints set default spread constraints if both 'SpreadByField' and 'SpreadByLabel' not set.
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func SetDefaultSpreadConstraints(spreadConstraints []policyv1alpha1.SpreadConstraint) {
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for i := range spreadConstraints {
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if len(spreadConstraints[i].SpreadByLabel) == 0 && len(spreadConstraints[i].SpreadByField) == 0 {
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klog.Infof("Setting default SpreadByField with %s", policyv1alpha1.SpreadByFieldCluster)
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spreadConstraints[i].SpreadByField = policyv1alpha1.SpreadByFieldCluster
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}
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if spreadConstraints[i].MinGroups == 0 {
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klog.Infof("Setting default MinGroups to 1")
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spreadConstraints[i].MinGroups = 1
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}
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}
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}
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// ValidateSpreadConstraint tests if the constraints is valid.
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func ValidateSpreadConstraint(spreadConstraints []policyv1alpha1.SpreadConstraint) error {
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// SpreadByField and SpreadByLabel should not co-exist
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for _, constraint := range spreadConstraints {
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if len(constraint.SpreadByField) > 0 && len(constraint.SpreadByLabel) > 0 {
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return fmt.Errorf("invalid constraints: SpreadByLabel(%s) should not co-exist with spreadByField(%s)", constraint.SpreadByLabel, constraint.SpreadByField)
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}
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// If MaxGroups provided, it should greater or equal than MinGroups.
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if constraint.MaxGroups > 0 && constraint.MaxGroups < constraint.MinGroups {
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return fmt.Errorf("maxGroups(%d) lower than minGroups(%d) is not allowed", constraint.MaxGroups, constraint.MinGroups)
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}
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}
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return nil
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}
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