mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 05:14:13 +01:00
113 lines
3.8 KiB
Go
113 lines
3.8 KiB
Go
/*
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Copyright 2022 The Kubernetes 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 validation
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import (
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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utilerrors "k8s.io/apimachinery/pkg/util/errors"
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"sigs.k8s.io/descheduler/pkg/api"
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"sigs.k8s.io/descheduler/pkg/apis/componentconfig"
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)
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const (
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// MinResourcePercentage is the minimum value of a resource's percentage
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MinResourcePercentage = 0
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// MaxResourcePercentage is the maximum value of a resource's percentage
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MaxResourcePercentage = 100
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)
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// ValidateRemovePodsViolatingNodeTaintsArgs validates RemovePodsViolatingNodeTaints arguments
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func ValidateRemovePodsViolatingNodeTaintsArgs(args *componentconfig.RemovePodsViolatingNodeTaintsArgs) error {
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return errorsAggregate(
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validateNamespaceArgs(args.Namespaces),
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validateLabelSelectorArgs(args.LabelSelector),
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)
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}
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// ValidateRemovePodsHavingTooManyRestartsArgs validates RemovePodsHavingTooManyRestarts arguments
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func ValidateRemovePodsHavingTooManyRestartsArgs(args *componentconfig.RemovePodsHavingTooManyRestartsArgs) error {
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return errorsAggregate(
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validateNamespaceArgs(args.Namespaces),
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validateLabelSelectorArgs(args.LabelSelector),
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validatePodRestartThreshold(args.PodRestartThreshold),
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)
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}
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// ValidateRemovePodsViolatingNodeAffinityArgs validates RemovePodsViolatingNodeAffinity arguments
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func ValidateRemovePodsViolatingNodeAffinityArgs(args *componentconfig.RemovePodsViolatingNodeAffinityArgs) error {
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var err error
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if args == nil || len(args.NodeAffinityType) == 0 {
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err = fmt.Errorf("nodeAffinityType needs to be set")
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}
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return errorsAggregate(
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err,
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validateNamespaceArgs(args.Namespaces),
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validateLabelSelectorArgs(args.LabelSelector),
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)
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}
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// ValidateRemovePodsViolatingTopologySpreadConstraintArgs validates RemovePodsViolatingTopologySpreadConstraint arguments
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func ValidateRemovePodsViolatingTopologySpreadConstraintArgs(args *componentconfig.RemovePodsViolatingTopologySpreadConstraintArgs) error {
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return errorsAggregate(
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validateNamespaceArgs(args.Namespaces),
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validateLabelSelectorArgs(args.LabelSelector),
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)
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}
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// ValidateRemovePodsViolatingInterPodAntiAffinityArgs validates ValidateRemovePodsViolatingInterPodAntiAffinity arguments
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func ValidateRemovePodsViolatingInterPodAntiAffinityArgs(args *componentconfig.RemovePodsViolatingInterPodAntiAffinityArgs) error {
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return errorsAggregate(
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validateNamespaceArgs(args.Namespaces),
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validateLabelSelectorArgs(args.LabelSelector),
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)
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}
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// errorsAggregate converts all arg validation errors to a single error interface.
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// if no errors, it will return nil.
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func errorsAggregate(errors ...error) error {
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return utilerrors.NewAggregate(errors)
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}
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func validateNamespaceArgs(namespaces *api.Namespaces) error {
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// At most one of include/exclude can be set
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if namespaces != nil && len(namespaces.Include) > 0 && len(namespaces.Exclude) > 0 {
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return fmt.Errorf("only one of Include/Exclude namespaces can be set")
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}
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return nil
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}
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func validateLabelSelectorArgs(labelSelector *metav1.LabelSelector) error {
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if labelSelector != nil {
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if _, err := metav1.LabelSelectorAsSelector(labelSelector); err != nil {
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return fmt.Errorf("failed to get label selectors from strategy's params: %+v", err)
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}
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}
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return nil
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}
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func validatePodRestartThreshold(podRestartThreshold int32) error {
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if podRestartThreshold < 1 {
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return fmt.Errorf("PodsHavingTooManyRestarts threshold not set")
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}
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return nil
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}
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