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81 lines
2.4 KiB
Go
81 lines
2.4 KiB
Go
/*
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Copyright 2016 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 util
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import (
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// GetNamespacesFromPodAffinityTerm returns a set of names
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// according to the namespaces indicated in podAffinityTerm.
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// If namespaces is empty it considers the given pod's namespace.
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func GetNamespacesFromPodAffinityTerm(pod *v1.Pod, podAffinityTerm *v1.PodAffinityTerm) sets.String {
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names := sets.String{}
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if len(podAffinityTerm.Namespaces) == 0 {
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names.Insert(pod.Namespace)
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} else {
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names.Insert(podAffinityTerm.Namespaces...)
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}
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return names
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}
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// PodMatchesTermsNamespaceAndSelector returns true if the given <pod>
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// matches the namespace and selector defined by <affinityPod>`s <term>.
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func PodMatchesTermsNamespaceAndSelector(pod *v1.Pod, namespaces sets.String, selector labels.Selector) bool {
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if !namespaces.Has(pod.Namespace) {
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return false
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}
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if !selector.Matches(labels.Set(pod.Labels)) {
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return false
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}
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return true
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}
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// NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key.
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// Returns false if topologyKey is empty.
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func NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool {
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if len(topologyKey) == 0 {
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return false
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}
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if nodeA.Labels == nil || nodeB.Labels == nil {
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return false
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}
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nodeALabel, okA := nodeA.Labels[topologyKey]
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nodeBLabel, okB := nodeB.Labels[topologyKey]
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// If found label in both nodes, check the label
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if okB && okA {
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return nodeALabel == nodeBLabel
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}
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return false
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}
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type Topologies struct {
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DefaultKeys []string
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}
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// NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key.
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func (tps *Topologies) NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool {
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return NodesHaveSameTopologyKey(nodeA, nodeB, topologyKey)
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}
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