github.com/sgoings/helm@v2.0.0-alpha.2.0.20170406211108-734e92851ac3+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/helm/helmpath" 28 "k8s.io/helm/pkg/repo" 29 ) 30 31 const updateDesc = ` 32 Update gets the latest information about charts from the respective chart repositories. 33 Information is cached locally, where it is used by commands like 'helm search'. 34 35 'helm update' is the deprecated form of 'helm repo update'. It will be removed in 36 future releases. 37 ` 38 39 var ( 40 errNoRepositories = errors.New("no repositories found. You must add one before updating") 41 ) 42 43 type repoUpdateCmd struct { 44 update func([]*repo.ChartRepository, io.Writer, helmpath.Home) 45 home helmpath.Home 46 out io.Writer 47 } 48 49 func newRepoUpdateCmd(out io.Writer) *cobra.Command { 50 u := &repoUpdateCmd{ 51 out: out, 52 update: updateCharts, 53 } 54 cmd := &cobra.Command{ 55 Use: "update", 56 Aliases: []string{"up"}, 57 Short: "update information on available charts in the chart repositories", 58 Long: updateDesc, 59 RunE: func(cmd *cobra.Command, args []string) error { 60 u.home = helmpath.Home(homePath()) 61 return u.run() 62 }, 63 } 64 return cmd 65 } 66 67 func (u *repoUpdateCmd) run() error { 68 f, err := repo.LoadRepositoriesFile(u.home.RepositoryFile()) 69 if err != nil { 70 return err 71 } 72 73 if len(f.Repositories) == 0 { 74 return errNoRepositories 75 } 76 var repos []*repo.ChartRepository 77 for _, cfg := range f.Repositories { 78 r, err := repo.NewChartRepository(cfg) 79 if err != nil { 80 return err 81 } 82 repos = append(repos, r) 83 } 84 85 u.update(repos, u.out, u.home) 86 return nil 87 } 88 89 func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Home) { 90 fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...") 91 var wg sync.WaitGroup 92 for _, re := range repos { 93 wg.Add(1) 94 go func(re *repo.ChartRepository) { 95 defer wg.Done() 96 if re.Config.Name == localRepository { 97 fmt.Fprintf(out, "...Skip %s chart repository\n", re.Config.Name) 98 return 99 } 100 err := re.DownloadIndexFile(home.Cache()) 101 if err != nil { 102 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) 103 } else { 104 fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", re.Config.Name) 105 } 106 }(re) 107 } 108 wg.Wait() 109 fmt.Fprintln(out, "Update Complete. ⎈ Happy Helming!⎈ ") 110 }