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repo_add.go
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/
repo_add.go
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/*
Copyright The Helm Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"context"
"fmt"
"io"
"path/filepath"
"strings"
"syscall"
"time"
"golang.org/x/crypto/ssh/terminal"
"github.com/gofrs/flock"
"github.com/spf13/cobra"
"k8s.io/helm/pkg/getter"
"k8s.io/helm/pkg/helm/helmpath"
"k8s.io/helm/pkg/repo"
)
type repoAddCmd struct {
name string
url string
username string
password string
home helmpath.Home
noupdate bool
certFile string
keyFile string
caFile string
out io.Writer
}
func newRepoAddCmd(out io.Writer) *cobra.Command {
add := &repoAddCmd{out: out}
cmd := &cobra.Command{
Use: "add [flags] [NAME] [URL]",
Short: "Add a chart repository",
RunE: func(cmd *cobra.Command, args []string) error {
if err := checkArgsLength(len(args), "name for the chart repository", "the url of the chart repository"); err != nil {
return err
}
add.name = args[0]
add.url = args[1]
add.home = settings.Home
return add.run()
},
}
f := cmd.Flags()
f.StringVar(&add.username, "username", "", "Chart repository username")
f.StringVar(&add.password, "password", "", "Chart repository password")
f.BoolVar(&add.noupdate, "no-update", false, "Raise error if repo is already registered")
f.StringVar(&add.certFile, "cert-file", "", "Identify HTTPS client using this SSL certificate file")
f.StringVar(&add.keyFile, "key-file", "", "Identify HTTPS client using this SSL key file")
f.StringVar(&add.caFile, "ca-file", "", "Verify certificates of HTTPS-enabled servers using this CA bundle")
return cmd
}
func (a *repoAddCmd) run() error {
if a.username != "" && a.password == "" {
fmt.Fprint(a.out, "Password:")
password, err := readPassword()
fmt.Fprintln(a.out)
if err != nil {
return err
}
a.password = password
}
if err := addRepository(a.name, a.url, a.username, a.password, a.home, a.certFile, a.keyFile, a.caFile, a.noupdate); err != nil {
return err
}
fmt.Fprintf(a.out, "%q has been added to your repositories\n", a.name)
return nil
}
func readPassword() (string, error) {
password, err := terminal.ReadPassword(int(syscall.Stdin))
if err != nil {
return "", err
}
return string(password), nil
}
func addRepository(name, url, username, password string, home helmpath.Home, certFile, keyFile, caFile string, noUpdate bool) error {
f, err := repo.LoadRepositoriesFile(home.RepositoryFile())
if err != nil {
return err
}
if noUpdate && f.Has(name) {
return fmt.Errorf("repository name (%s) already exists, please specify a different name", name)
}
cif := home.CacheIndex(name)
c := repo.Entry{
Name: name,
Cache: cif,
URL: url,
Username: username,
Password: password,
CertFile: certFile,
KeyFile: keyFile,
CAFile: caFile,
}
r, err := repo.NewChartRepository(&c, getter.All(settings))
if err != nil {
return err
}
if err := r.DownloadIndexFile(home.Cache()); err != nil {
return fmt.Errorf("Looks like %q is not a valid chart repository or cannot be reached: %s", url, err.Error())
}
repoFile := home.RepositoryFile()
// Acquire a file lock for process synchronization
fileLock := flock.New(strings.Replace(repoFile, filepath.Ext(repoFile), ".lock", 1))
lockCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
locked, err := fileLock.TryLockContext(lockCtx, time.Second)
if err == nil && locked {
defer fileLock.Unlock()
}
if err != nil {
return err
}
// Re-read the repositories file before updating it as its content may have been changed
// by a concurrent execution after the first read and before being locked
f, err = repo.LoadRepositoriesFile(repoFile)
if err != nil {
return err
}
f.Update(&c)
return f.WriteFile(repoFile, 0644)
}