mirror of https://github.com/k3s-io/k3s
79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
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/*
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Copyright 2015 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 nodeinfo
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import (
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// CreateNodeNameToInfoMap obtains a list of pods and pivots that list into a map where the keys are node names
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// and the values are the aggregated information for that node.
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func CreateNodeNameToInfoMap(pods []*v1.Pod, nodes []*v1.Node) map[string]*NodeInfo {
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nodeNameToInfo := make(map[string]*NodeInfo)
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for _, pod := range pods {
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nodeName := pod.Spec.NodeName
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if _, ok := nodeNameToInfo[nodeName]; !ok {
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nodeNameToInfo[nodeName] = NewNodeInfo()
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}
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nodeNameToInfo[nodeName].AddPod(pod)
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}
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imageExistenceMap := createImageExistenceMap(nodes)
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for _, node := range nodes {
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if _, ok := nodeNameToInfo[node.Name]; !ok {
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nodeNameToInfo[node.Name] = NewNodeInfo()
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}
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nodeInfo := nodeNameToInfo[node.Name]
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nodeInfo.SetNode(node)
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nodeInfo.imageStates = getNodeImageStates(node, imageExistenceMap)
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}
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return nodeNameToInfo
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}
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// getNodeImageStates returns the given node's image states based on the given imageExistence map.
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func getNodeImageStates(node *v1.Node, imageExistenceMap map[string]sets.String) map[string]*ImageStateSummary {
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imageStates := make(map[string]*ImageStateSummary)
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for _, image := range node.Status.Images {
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for _, name := range image.Names {
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imageStates[name] = &ImageStateSummary{
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Size: image.SizeBytes,
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NumNodes: len(imageExistenceMap[name]),
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}
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}
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}
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return imageStates
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}
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// createImageExistenceMap returns a map recording on which nodes the images exist, keyed by the images' names.
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func createImageExistenceMap(nodes []*v1.Node) map[string]sets.String {
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imageExistenceMap := make(map[string]sets.String)
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for _, node := range nodes {
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for _, image := range node.Status.Images {
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for _, name := range image.Names {
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if _, ok := imageExistenceMap[name]; !ok {
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imageExistenceMap[name] = sets.NewString(node.Name)
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} else {
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imageExistenceMap[name].Insert(node.Name)
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}
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}
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}
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}
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return imageExistenceMap
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}
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