112 lines
3.2 KiB
Go
112 lines
3.2 KiB
Go
/*
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Copyright 2019 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 utils
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import (
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apiv1 "k8s.io/api/core/v1"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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klog "k8s.io/klog/v2"
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"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
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)
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// GetNodeGroupSizeMap return a map of node group id and its target size
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func GetNodeGroupSizeMap(cloudProvider cloudprovider.CloudProvider) map[string]int {
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nodeGroupSize := make(map[string]int)
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for _, nodeGroup := range cloudProvider.NodeGroups() {
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size, err := nodeGroup.TargetSize()
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if err != nil {
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klog.Errorf("Error while checking node group size %s: %v", nodeGroup.Id(), err)
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continue
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}
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nodeGroupSize[nodeGroup.Id()] = size
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}
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return nodeGroupSize
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}
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// FilterOutNodes filters out nodesToFilterOut from nodes
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func FilterOutNodes(nodes []*apiv1.Node, nodesToFilterOut []*apiv1.Node) []*apiv1.Node {
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var filtered []*apiv1.Node
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for _, node := range nodes {
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found := false
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for _, nodeToFilter := range nodesToFilterOut {
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if nodeToFilter.Name == node.Name {
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found = true
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}
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}
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if !found {
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filtered = append(filtered, node)
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}
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}
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return filtered
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}
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// PodSpecSemanticallyEqual returns true if two pod specs are similar after dropping
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// the fields we don't care about
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// Due to the generated suffixes, a strict DeepEquals check will fail and generate
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// an equivalence group per pod which is undesirable.
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// Projected volumes do not impact scheduling so we should ignore them
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func PodSpecSemanticallyEqual(p1 apiv1.PodSpec, p2 apiv1.PodSpec) bool {
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p1Spec := sanitizePodSpec(p1)
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p2Spec := sanitizePodSpec(p2)
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return apiequality.Semantic.DeepEqual(p1Spec, p2Spec)
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}
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func sanitizePodSpec(podSpec apiv1.PodSpec) apiv1.PodSpec {
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dropProjectedVolumesAndMounts(&podSpec)
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dropHostname(&podSpec)
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return podSpec
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}
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func dropProjectedVolumesAndMounts(podSpec *apiv1.PodSpec) {
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projectedVolumeNames := map[string]bool{}
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var volumes []apiv1.Volume
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for _, v := range podSpec.Volumes {
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if v.Projected == nil {
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volumes = append(volumes, v)
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} else {
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projectedVolumeNames[v.Name] = true
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}
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}
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podSpec.Volumes = volumes
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for i := range podSpec.Containers {
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var volumeMounts []apiv1.VolumeMount
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for _, mount := range podSpec.Containers[i].VolumeMounts {
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if ok := projectedVolumeNames[mount.Name]; !ok {
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volumeMounts = append(volumeMounts, mount)
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}
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}
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podSpec.Containers[i].VolumeMounts = volumeMounts
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}
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for i := range podSpec.InitContainers {
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var volumeMounts []apiv1.VolumeMount
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for _, mount := range podSpec.InitContainers[i].VolumeMounts {
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if ok := projectedVolumeNames[mount.Name]; !ok {
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volumeMounts = append(volumeMounts, mount)
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}
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}
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podSpec.InitContainers[i].VolumeMounts = volumeMounts
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}
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}
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func dropHostname(podSpec *apiv1.PodSpec) {
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podSpec.Hostname = ""
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}
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