mirror of https://github.com/openkruise/kruise.git
89 lines
2.9 KiB
Go
89 lines
2.9 KiB
Go
/*
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Copyright 2020 The Kruise 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 pub
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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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)
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// UpdatePriorityStrategy is the strategy to define priority for pods update.
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// Only one of orderPriority and weightPriority can be set.
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type UpdatePriorityStrategy struct {
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// Order priority terms, pods will be sorted by the value of orderedKey.
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// For example:
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// ```
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// orderPriority:
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// - orderedKey: key1
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// - orderedKey: key2
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// ```
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// First, all pods which have key1 in labels will be sorted by the value of key1.
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// Then, the left pods which have no key1 but have key2 in labels will be sorted by
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// the value of key2 and put behind those pods have key1.
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OrderPriority []UpdatePriorityOrderTerm `json:"orderPriority,omitempty"`
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// Weight priority terms, pods will be sorted by the sum of all terms weight.
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WeightPriority []UpdatePriorityWeightTerm `json:"weightPriority,omitempty"`
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}
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// UpdatePriorityOrderTerm defines order priority.
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type UpdatePriorityOrderTerm struct {
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// Calculate priority by value of this key.
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// Values of this key, will be sorted by GetInt(val). GetInt method will find the last int in value,
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// such as getting 5 in value '5', getting 10 in value 'sts-10'.
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OrderedKey string `json:"orderedKey"`
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}
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// UpdatePriorityWeightTerm defines weight priority.
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type UpdatePriorityWeightTerm struct {
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// Weight associated with matching the corresponding matchExpressions, in the range 1-100.
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Weight int32 `json:"weight"`
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// MatchSelector is used to select by pod's labels.
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MatchSelector metav1.LabelSelector `json:"matchSelector"`
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}
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// FieldsValidation checks invalid fields in UpdatePriorityStrategy.
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func (strategy *UpdatePriorityStrategy) FieldsValidation() error {
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if strategy == nil {
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return nil
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}
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if len(strategy.WeightPriority) > 0 && len(strategy.OrderPriority) > 0 {
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return fmt.Errorf("only one of weightPriority and orderPriority can be used")
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}
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for _, w := range strategy.WeightPriority {
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if w.Weight < 0 || w.Weight > 100 {
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return fmt.Errorf("weight must be valid number in the range 1-100")
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}
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if w.MatchSelector.Size() == 0 {
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return fmt.Errorf("selector can not be empty")
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}
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if _, err := metav1.LabelSelectorAsSelector(&w.MatchSelector); err != nil {
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return fmt.Errorf("invalid selector %v", err)
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}
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}
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for _, o := range strategy.OrderPriority {
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if len(o.OrderedKey) == 0 {
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return fmt.Errorf("order key can not be empty")
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}
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}
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return nil
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}
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