/
repo.go
263 lines (213 loc) · 5.61 KB
/
repo.go
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package repo
import (
"context"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
"github.com/gofrs/flock"
"gopkg.in/yaml.v2"
"helm.sh/helm/v3/pkg/cli"
"helm.sh/helm/v3/pkg/getter"
"helm.sh/helm/v3/pkg/repo"
)
var deprecatedRepos = map[string]string{
"//kubernetes-charts.storage.googleapis.com": "https://charts.helm.sh/stable",
"//kubernetes-charts-incubator.storage.googleapis.com": "https://charts.helm.sh/incubator",
}
func checkDeprecatedRepos(url string) error {
for oldURL, newURL := range deprecatedRepos {
if strings.Contains(url, oldURL) {
return fmt.Errorf("repo(%s) is deprecated. use %s", url, newURL)
}
}
return nil
}
type Repos struct {
settings *cli.EnvSettings
fileLock *flock.Flock
fileLocked bool
fileInfo *repo.File
}
func NewRepos(settings *cli.EnvSettings) *Repos {
return &Repos{settings: settings}
}
func (r *Repos) lockFile(ctx context.Context) error {
// check repo directory
err := os.MkdirAll(filepath.Dir(r.settings.RepositoryConfig), os.ModePerm)
if err != nil && !os.IsExist(err) {
return err
}
// lock repo lock file
fileExt := filepath.Ext(r.settings.RepositoryConfig)
var lockPath string
if len(fileExt) > 0 && len(fileExt) < len(r.settings.RepositoryConfig) {
lockPath = strings.Replace(r.settings.RepositoryConfig, fileExt, ".lock", 1)
} else {
lockPath = r.settings.RepositoryConfig + ".lock"
}
r.fileLock = flock.New(lockPath)
r.fileLocked, err = r.fileLock.TryLockContext(ctx, time.Second)
if err != nil {
return err
}
return nil
}
func (r *Repos) unlockFile() {
if r.fileLock != nil && r.fileLocked {
r.fileLock.Unlock()
}
}
func (r *Repos) readFile() error {
if len(r.settings.RepositoryConfig) == 0 {
return fmt.Errorf("repository file path is emtpy")
}
b, err := ioutil.ReadFile(r.settings.RepositoryConfig)
if err != nil && !os.IsNotExist(err) {
return err
}
var f repo.File
if err := yaml.Unmarshal(b, &f); err != nil {
return err
}
r.fileInfo = &f
return nil
}
func (r *Repos) hasRepoEntry(entry *repo.Entry) error {
if r.fileInfo == nil || entry == nil {
return fmt.Errorf("file info or entry is empty")
}
// repo name already exists
if r.fileInfo.Has(entry.Name) {
existingEntry := r.fileInfo.Get(entry.Name)
if *entry != *existingEntry {
return fmt.Errorf("repository name(%s) already exists", entry.Name)
}
// the same repo already exists
return errExistRepo
}
return nil
}
func (r *Repos) updateRepoEntry(entry *repo.Entry) error {
if r.fileInfo == nil {
return fmt.Errorf("file info is empty")
}
r.fileInfo.Update(entry)
if err := r.fileInfo.WriteFile(r.settings.RepositoryConfig, 0644); err != nil {
return err
}
return nil
}
func (r *Repos) Add(name, url, username, password string) error {
if err := checkDeprecatedRepos(url); err != nil {
return err
}
// lock for repo file
lockCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
err := r.lockFile(lockCtx)
if err != nil {
return err
}
defer r.unlockFile()
// read repo file
if err := r.readFile(); err != nil {
return err
}
entry := &repo.Entry{
Name: name,
URL: url,
Username: username,
Password: password,
InsecureSkipTLSverify: false,
}
// check if the repo name is legal
if strings.Contains(entry.Name, "/") {
return fmt.Errorf("repository name(%s) must not contain '/'", entry.Name)
}
// check if an entry exists in the repo file
if err := r.hasRepoEntry(entry); err != nil {
return err
}
// login if credential is provided
var providers getter.Providers
if username != "" && password != "" {
// Create a new HTTPGetter to handle authentication
authConstructor := func(opts ...getter.Option) (getter.Getter, error) {
return getter.NewHTTPGetter(
append(opts, getter.WithBasicAuth(username, password), getter.WithURL(url))...)
}
// Create a new Provider with the authConstructor
providers = getter.Providers{
{Schemes: []string{"http", "https"}, New: authConstructor},
}
} else {
providers = getter.All(r.settings)
}
cr, err := repo.NewChartRepository(entry, providers)
//cr, err := repo.NewChartRepository(entry, getter.All(r.settings))
if err != nil {
return err
}
if r.settings.RepositoryCache != "" {
cr.CachePath = r.settings.RepositoryCache
}
if _, err := cr.DownloadIndexFile(); err != nil {
return err
}
// update and write entry to repo file
if err := r.updateRepoEntry(entry); err != nil {
return err
}
return nil
}
type RepoElem struct {
Name string `json:"name,omitempty"`
Url string `json:"url,omitempty"`
}
func (r *Repos) List() ([]*RepoElem, error) {
f, err := repo.LoadFile(r.settings.RepositoryConfig)
if err != nil {
return nil, err
}
if len(f.Repositories) == 0 {
return nil, fmt.Errorf("repositories do not exist")
}
var list []*RepoElem
for _, re := range f.Repositories {
list = append(list, &RepoElem{re.Name, re.URL})
}
return list, nil
}
func (r *Repos) Update(name string) error {
f, err := repo.LoadFile(r.settings.RepositoryConfig)
if err != nil {
return err
}
if len(f.Repositories) == 0 {
return fmt.Errorf("repositories do not exist")
}
var cr *repo.ChartRepository
for _, re := range f.Repositories {
if re.Name == name {
ncr, err := repo.NewChartRepository(re, getter.All(r.settings))
if err != nil {
return err
}
if r.settings.RepositoryCache != "" {
ncr.CachePath = r.settings.RepositoryCache
}
cr = ncr
break
}
}
if cr == nil {
return fmt.Errorf("no repository found : %s", name)
}
if _, err := cr.DownloadIndexFile(); err != nil {
return err
}
return nil
}