Joshua Hoblitt
b29e89ef67
Remove dead code from the k8sutil package; none of these symbols had any callers anywhere in the repo (verified with deadcode, staticcheck U1000, and repo-wide grep, tests included): - patcher.go: delete file (Patcher type, NewPatcher, Patch) - replicaset.go: delete file (DeleteReplicaSet) - customresource.go: WatchCR (the CustomResource type remains in use) - deployment.go: WaitForDeploymentImage - job.go: WaitForJobCompletion - k8sutil.go: GetK8SVersion - pod.go: ConfigOverrideMount, ConfigOverrideVolume, GetPodLog - prometheus.go: DeleteServiceMonitor - service.go: DeleteService - volume.go: NodeConfigURI, BinariesMountInfo, YamlToVolumes, YamlToVolumeMounts, and the BinariesMountPath const (only used by the removed BinariesMountInfo) Now-unused imports are dropped from each file. The shared deleteResourceAndWait helper remains (still used by DeleteDeployment). Signed-off-by: Joshua Hoblitt <josh@hoblitt.com>
67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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 k8sutil for Kubernetes helpers.
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package k8sutil
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import (
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"fmt"
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"strings"
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"k8s.io/apimachinery/pkg/util/validation"
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)
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// PathToVolumeName converts a path to a valid volume name
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func PathToVolumeName(path string) string {
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// kubernetes volume names must match this regex: [a-z0-9]([-a-z0-9]*[a-z0-9])?
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sanitized := make([]rune, 0, len(path))
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for _, c := range path {
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switch {
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case '0' <= c && c <= '9':
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fallthrough
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case 'a' <= c && c <= 'z':
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sanitized = append(sanitized, c)
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continue
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case 'A' <= c && c <= 'Z':
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// convert upper to lower case
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sanitized = append(sanitized, c+('a'-'A'))
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default:
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// convert any non alphanum char to a hyphen
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sanitized = append(sanitized, '-')
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}
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}
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volumeName := string(sanitized)
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// trim any leading/trailing hyphens
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volumeName = strings.TrimPrefix(volumeName, "-")
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volumeName = strings.TrimSuffix(volumeName, "-")
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if len(volumeName) > validation.DNS1123LabelMaxLength {
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// keep an equal sample of the original name from both the beginning and from the end,
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// and add some characters from a hash of the full name to help prevent name collisions.
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// Make room for 3 hyphens in the middle (~ellipsis) and 1 hyphen to separate the hash.
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hashLength := 8
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sampleLength := int((validation.DNS1123LabelMaxLength - hashLength - 3 - 1) / 2)
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first := volumeName[0:sampleLength]
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last := volumeName[len(volumeName)-sampleLength:]
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hash := Hash(volumeName)
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volumeName = fmt.Sprintf("%s---%s-%s", first, last, hash[0:hashLength])
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}
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return volumeName
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}
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