github.com/darkowlzz/helm@v2.5.1-0.20171213183701-6707fe0468d4+incompatible/cmd/helm/repo_update.go (about) 1 /* 2 Copyright 2016 The Kubernetes Authors All rights reserved. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package main 18 19 import ( 20 "errors" 21 "fmt" 22 "io" 23 "sync" 24 25 "github.com/spf13/cobra" 26 27 "k8s.io/helm/pkg/getter" 28 "k8s.io/helm/pkg/helm/helmpath" 29 "k8s.io/helm/pkg/repo" 30 ) 31 32 const updateDesc = ` 33 Update gets the latest information about charts from the respective chart repositories. 34 Information is cached locally, where it is used by commands like 'helm search'. 35 36 'helm update' is the deprecated form of 'helm repo update'. It will be removed in 37 future releases. 38 ` 39 40 var errNoRepositories = errors.New("no repositories found. You must add one before updating") 41 42 type repoUpdateCmd struct { 43 update func([]*repo.ChartRepository, io.Writer, helmpath.Home) 44 home helmpath.Home 45 out io.Writer 46 } 47 48 func newRepoUpdateCmd(out io.Writer) *cobra.Command { 49 u := &repoUpdateCmd{ 50 out: out, 51 update: updateCharts, 52 } 53 cmd := &cobra.Command{ 54 Use: "update", 55 Aliases: []string{"up"}, 56 Short: "update information of available charts locally from chart repositories", 57 Long: updateDesc, 58 RunE: func(cmd *cobra.Command, args []string) error { 59 u.home = settings.Home 60 return u.run() 61 }, 62 } 63 return cmd 64 } 65 66 func (u *repoUpdateCmd) run() error { 67 f, err := repo.LoadRepositoriesFile(u.home.RepositoryFile()) 68 if err != nil { 69 return err 70 } 71 72 if len(f.Repositories) == 0 { 73 return errNoRepositories 74 } 75 var repos []*repo.ChartRepository 76 for _, cfg := range f.Repositories { 77 r, err := repo.NewChartRepository(cfg, getter.All(settings)) 78 if err != nil { 79 return err 80 } 81 repos = append(repos, r) 82 } 83 84 u.update(repos, u.out, u.home) 85 return nil 86 } 87 88 func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Home) { 89 fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...") 90 var wg sync.WaitGroup 91 for _, re := range repos { 92 wg.Add(1) 93 go func(re *repo.ChartRepository) { 94 defer wg.Done() 95 if re.Config.Name == localRepository { 96 fmt.Fprintf(out, "...Skip %s chart repository\n", re.Config.Name) 97 return 98 } 99 err := re.DownloadIndexFile(home.Cache()) 100 if err != nil { 101 fmt.Fprintf(out, "...Unable to get an update from the %q chart repository (%s):\n\t%s\n", re.Config.Name, re.Config.URL, err) 102 } else { 103 fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", re.Config.Name) 104 } 105 }(re) 106 } 107 wg.Wait() 108 fmt.Fprintln(out, "Update Complete. ⎈ Happy Helming!⎈ ") 109 }