126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
/*
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Copyright 2016 The Kubernetes 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 util
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import (
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"fmt"
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"os"
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"os/user"
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"path/filepath"
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"strconv"
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"github.com/blang/semver/v4"
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units "github.com/docker/go-units"
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"github.com/pkg/errors"
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)
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const (
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downloadURL = "https://storage.googleapis.com/minikube/releases/%s/minikube-%s-%s%s"
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)
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// CalculateSizeInMB returns the number of MB in the human readable string
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func CalculateSizeInMB(humanReadableSize string) (int, error) {
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_, err := strconv.ParseInt(humanReadableSize, 10, 64)
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if err == nil {
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humanReadableSize += "mb"
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}
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// parse the size suffix binary instead of decimal so that 1G -> 1024MB instead of 1000MB
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size, err := units.RAMInBytes(humanReadableSize)
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if err != nil {
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return 0, fmt.Errorf("FromHumanSize: %v", err)
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}
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return int(size / units.MiB), nil
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}
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// ConvertMBToBytes converts MB to bytes
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func ConvertMBToBytes(mbSize int) int64 {
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return int64(mbSize) * units.MiB
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}
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// ConvertBytesToMB converts bytes to MB
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func ConvertBytesToMB(byteSize int64) int {
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return int(ConvertUnsignedBytesToMB(uint64(byteSize)))
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}
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// ConvertUnsignedBytesToMB converts bytes to MB
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func ConvertUnsignedBytesToMB(byteSize uint64) int64 {
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return int64(byteSize / units.MiB)
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}
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// GetBinaryDownloadURL returns a suitable URL for the platform and arch
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func GetBinaryDownloadURL(version, platform, arch string) string {
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switch platform {
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case "windows":
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return fmt.Sprintf(downloadURL, version, platform, arch, ".exe")
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default:
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return fmt.Sprintf(downloadURL, version, platform, arch, "")
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}
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}
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// ChownR does a recursive os.Chown
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func ChownR(path string, uid, gid int) error {
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return filepath.Walk(path, func(name string, info os.FileInfo, err error) error {
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if err == nil {
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err = os.Chown(name, uid, gid)
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}
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return err
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})
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}
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// MaybeChownDirRecursiveToMinikubeUser changes ownership of a dir, if requested
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func MaybeChownDirRecursiveToMinikubeUser(dir string) error {
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if os.Getenv("CHANGE_MINIKUBE_NONE_USER") != "" && os.Getenv("SUDO_USER") != "" {
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username := os.Getenv("SUDO_USER")
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usr, err := user.Lookup(username)
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if err != nil {
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return errors.Wrap(err, "Error looking up user")
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}
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uid, err := strconv.Atoi(usr.Uid)
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if err != nil {
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return errors.Wrapf(err, "Error parsing uid for user: %s", username)
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}
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gid, err := strconv.Atoi(usr.Gid)
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if err != nil {
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return errors.Wrapf(err, "Error parsing gid for user: %s", username)
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}
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if err := ChownR(dir, uid, gid); err != nil {
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return errors.Wrapf(err, "Error changing ownership for: %s", dir)
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}
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}
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return nil
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}
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// ParseKubernetesVersion parses the Kubernetes version
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func ParseKubernetesVersion(version string) (semver.Version, error) {
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return semver.Make(version[1:])
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}
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// RemoveDuplicateStrings takes a string slice and returns a slice without duplicates
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func RemoveDuplicateStrings(initial []string) []string {
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var result []string
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m := make(map[string]bool, len(initial))
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for _, v := range initial {
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if _, ok := m[v]; ok {
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continue
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}
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m[v] = true
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result = append(result, v)
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}
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return result
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}
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