github.com/Beeketing/helm@v2.12.1+incompatible/cmd/helm/repo_update.go (about) 1 /* 2 Copyright The Helm Authors. 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, bool) error 44 home helmpath.Home 45 out io.Writer 46 strict bool 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 of available charts locally from chart repositories", 58 Long: updateDesc, 59 RunE: func(cmd *cobra.Command, args []string) error { 60 u.home = settings.Home 61 return u.run() 62 }, 63 } 64 65 f := cmd.Flags() 66 f.BoolVar(&u.strict, "strict", false, "fail on update warnings") 67 68 return cmd 69 } 70 71 func (u *repoUpdateCmd) run() error { 72 f, err := repo.LoadRepositoriesFile(u.home.RepositoryFile()) 73 if err != nil { 74 return err 75 } 76 77 if len(f.Repositories) == 0 { 78 return errNoRepositories 79 } 80 var repos []*repo.ChartRepository 81 for _, cfg := range f.Repositories { 82 r, err := repo.NewChartRepository(cfg, getter.All(settings)) 83 if err != nil { 84 return err 85 } 86 repos = append(repos, r) 87 } 88 return u.update(repos, u.out, u.home, u.strict) 89 } 90 91 func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Home, strict bool) error { 92 fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...") 93 var ( 94 errorCounter int 95 wg sync.WaitGroup 96 ) 97 for _, re := range repos { 98 wg.Add(1) 99 go func(re *repo.ChartRepository) { 100 defer wg.Done() 101 if re.Config.Name == localRepository { 102 fmt.Fprintf(out, "...Skip %s chart repository\n", re.Config.Name) 103 return 104 } 105 err := re.DownloadIndexFile(home.Cache()) 106 if err != nil { 107 errorCounter++ 108 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) 109 } else { 110 fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", re.Config.Name) 111 } 112 }(re) 113 } 114 wg.Wait() 115 116 if errorCounter != 0 && strict { 117 return errors.New("Update Failed. Check log for details") 118 } 119 120 fmt.Fprintln(out, "Update Complete. ⎈ Happy Helming!⎈ ") 121 return nil 122 }