forked from rancher/rke
/
util.go
109 lines (95 loc) · 2.4 KB
/
util.go
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package util
import (
"fmt"
"github.com/rancher/types/apis/management.cattle.io/v3"
"os"
"reflect"
"strings"
"github.com/coreos/go-semver/semver"
ref "github.com/docker/distribution/reference"
"github.com/sirupsen/logrus"
)
const (
WorkerThreads = 50
)
func StrToSemVer(version string) (*semver.Version, error) {
v, err := semver.NewVersion(strings.TrimPrefix(version, "v"))
if err != nil {
return nil, err
}
return v, nil
}
func GetObjectQueue(l interface{}) chan interface{} {
s := reflect.ValueOf(l)
c := make(chan interface{}, s.Len())
for i := 0; i < s.Len(); i++ {
c <- s.Index(i).Interface()
}
close(c)
return c
}
func ErrList(e []error) error {
if len(e) > 0 {
return fmt.Errorf("%v", e)
}
return nil
}
// UniqueStringSlice - Input slice, retrun slice with unique elements. Will not maintain order.
func UniqueStringSlice(elements []string) []string {
encountered := map[string]bool{}
result := []string{}
for v := range elements {
if !encountered[elements[v]] {
encountered[elements[v]] = true
result = append(result, elements[v])
}
}
return result
}
func IsSymlink(file string) (bool, error) {
f, err := os.Lstat(file)
if err != nil {
return false, err
}
if f.Mode()&os.ModeSymlink != 0 {
return true, nil
}
return false, nil
}
func GetTagMajorVersion(tag string) string {
splitTag := strings.Split(tag, ".")
if len(splitTag) < 2 {
return ""
}
return strings.Join(splitTag[:2], ".")
}
func IsFileExists(filePath string) (bool, error) {
if _, err := os.Stat(filePath); err == nil {
return true, nil
} else if os.IsNotExist(err) {
return false, nil
} else {
return false, err
}
}
func GetDefaultRKETools(image string) (string, error) {
tag, err := GetImageTagFromImage(image)
if err != nil || tag == "" {
return "", fmt.Errorf("defaultRKETools: no tag %s", image)
}
toReplaceTag, err := GetImageTagFromImage(v3.AllK8sVersions[v3.DefaultK8s].Alpine)
if err != nil || toReplaceTag == "" {
return "", fmt.Errorf("defaultRKETools: no replace tag %s", v3.AllK8sVersions[v3.DefaultK8s].Alpine)
}
image = strings.Replace(image, tag, toReplaceTag, 1)
return image, nil
}
func GetImageTagFromImage(image string) (string, error) {
parsedImage, err := ref.ParseNormalizedNamed(image)
if err != nil {
return "", err
}
imageTag := parsedImage.(ref.Tagged).Tag()
logrus.Debugf("Extracted version [%s] from image [%s]", imageTag, image)
return imageTag, nil
}