mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-22 14:20:19 +00:00
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
/*
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Copyright 2023 The Ceph-CSI 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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"strings"
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"github.com/ceph/ceph-csi/internal/util/log"
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)
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// GetCrushLocationMap returns the crush location map, determined from
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// the crush location labels and their values from the CO system.
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// Expects crushLocationLabels in arg to be in the format "[prefix/]<name>,[prefix/]<name>,...",.
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// Returns map of crush location types with its array of associated values.
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func GetCrushLocationMap(crushLocationLabels, nodeName string) (map[string]string, error) {
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if crushLocationLabels == "" {
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return nil, nil
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}
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nodeLabels, err := k8sGetNodeLabels(nodeName)
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if err != nil {
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return nil, err
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}
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return getCrushLocationMap(crushLocationLabels, nodeLabels), nil
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}
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// getCrushLocationMap returns the crush location map, determined from
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// the crush location labels and node labels.
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func getCrushLocationMap(crushLocationLabels string, nodeLabels map[string]string) map[string]string {
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labelsToRead := strings.Split(crushLocationLabels, labelSeparator)
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log.DefaultLog("CRUSH location labels passed for processing: %+v", labelsToRead)
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labelsIn := make(map[string]bool, len(labelsToRead))
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for _, label := range labelsToRead {
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labelsIn[label] = true
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}
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// Determine values for requested labels from node labels
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crushLocationMap := make(map[string]string, len(labelsIn))
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for key, value := range nodeLabels {
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if _, ok := labelsIn[key]; !ok {
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continue
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}
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// label found split name component and store value
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nameIdx := strings.IndexRune(key, keySeparator)
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crushLocationType := strings.TrimSpace(key[nameIdx+1:])
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if crushLocationType == "hostname" {
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// ceph defaults to "host" while Kubernetes uses "hostname" as key.
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crushLocationType = "host"
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}
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// replace "." with "-" to satisfy ceph crush map.
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value = strings.ReplaceAll(strings.TrimSpace(value), ".", "-")
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crushLocationMap[crushLocationType] = value
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}
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if len(crushLocationMap) == 0 {
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return nil
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}
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log.DefaultLog("list of CRUSH location processed: %+v", crushLocationMap)
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return crushLocationMap
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}
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