mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-26 00:00:23 +00:00
82 lines
2.4 KiB
Go
82 lines
2.4 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package util
|
|
|
|
import (
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
)
|
|
|
|
// GetNamespacesFromPodAffinityTerm returns a set of names
|
|
// according to the namespaces indicated in podAffinityTerm.
|
|
// If namespaces is empty it considers the given pod's namespace.
|
|
func GetNamespacesFromPodAffinityTerm(pod *v1.Pod, podAffinityTerm *v1.PodAffinityTerm) sets.String {
|
|
names := sets.String{}
|
|
if len(podAffinityTerm.Namespaces) == 0 {
|
|
names.Insert(pod.Namespace)
|
|
} else {
|
|
names.Insert(podAffinityTerm.Namespaces...)
|
|
}
|
|
return names
|
|
}
|
|
|
|
// PodMatchesTermsNamespaceAndSelector returns true if the given <pod>
|
|
// matches the namespace and selector defined by <affinityPod>`s <term>.
|
|
func PodMatchesTermsNamespaceAndSelector(pod *v1.Pod, namespaces sets.String, selector labels.Selector) bool {
|
|
if !namespaces.Has(pod.Namespace) {
|
|
return false
|
|
}
|
|
|
|
if !selector.Matches(labels.Set(pod.Labels)) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key.
|
|
// Returns false if topologyKey is empty.
|
|
func NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool {
|
|
if len(topologyKey) == 0 {
|
|
return false
|
|
}
|
|
|
|
if nodeA.Labels == nil || nodeB.Labels == nil {
|
|
return false
|
|
}
|
|
|
|
nodeALabel, okA := nodeA.Labels[topologyKey]
|
|
nodeBLabel, okB := nodeB.Labels[topologyKey]
|
|
|
|
// If found label in both nodes, check the label
|
|
if okB && okA {
|
|
return nodeALabel == nodeBLabel
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// Topologies contains topologies information of nodes.
|
|
type Topologies struct {
|
|
DefaultKeys []string
|
|
}
|
|
|
|
// NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key.
|
|
func (tps *Topologies) NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool {
|
|
return NodesHaveSameTopologyKey(nodeA, nodeB, topologyKey)
|
|
}
|