github.com/corburn/helm@v3.0.0-beta.3+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 "fmt" 21 "io" 22 "sync" 23 24 "github.com/pkg/errors" 25 "github.com/spf13/cobra" 26 27 "helm.sh/helm/cmd/helm/require" 28 "helm.sh/helm/pkg/getter" 29 "helm.sh/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 37 var errNoRepositories = errors.New("no repositories found. You must add one before updating") 38 39 type repoUpdateOptions struct { 40 update func([]*repo.ChartRepository, io.Writer) 41 repoFile string 42 } 43 44 func newRepoUpdateCmd(out io.Writer) *cobra.Command { 45 o := &repoUpdateOptions{update: updateCharts} 46 47 cmd := &cobra.Command{ 48 Use: "update", 49 Aliases: []string{"up"}, 50 Short: "update information of available charts locally from chart repositories", 51 Long: updateDesc, 52 Args: require.NoArgs, 53 RunE: func(cmd *cobra.Command, args []string) error { 54 o.repoFile = settings.RepositoryConfig 55 return o.run(out) 56 }, 57 } 58 return cmd 59 } 60 61 func (o *repoUpdateOptions) run(out io.Writer) error { 62 f, err := repo.LoadFile(o.repoFile) 63 if isNotExist(err) || len(f.Repositories) == 0 { 64 return errNoRepositories 65 } 66 var repos []*repo.ChartRepository 67 for _, cfg := range f.Repositories { 68 r, err := repo.NewChartRepository(cfg, getter.All(settings)) 69 if err != nil { 70 return err 71 } 72 repos = append(repos, r) 73 } 74 75 o.update(repos, out) 76 return nil 77 } 78 79 func updateCharts(repos []*repo.ChartRepository, out io.Writer) { 80 fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...") 81 var wg sync.WaitGroup 82 for _, re := range repos { 83 wg.Add(1) 84 go func(re *repo.ChartRepository) { 85 defer wg.Done() 86 if _, err := re.DownloadIndexFile(); err != nil { 87 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) 88 } else { 89 fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", re.Config.Name) 90 } 91 }(re) 92 } 93 wg.Wait() 94 fmt.Fprintln(out, "Update Complete. ⎈ Happy Helming!⎈ ") 95 }