github.com/brockwood/helm@v2.8.0-rc.1.0.20180112204834-077be881c4cc+incompatible/cmd/helm/serve.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 "fmt" 21 "io" 22 "os" 23 "path/filepath" 24 25 "github.com/spf13/cobra" 26 27 "k8s.io/helm/pkg/repo" 28 ) 29 30 const serveDesc = ` 31 This command starts a local chart repository server that serves charts from a local directory. 32 33 The new server will provide HTTP access to a repository. By default, it will 34 scan all of the charts in '$HELM_HOME/repository/local' and serve those over 35 the local IPv4 TCP port (default '127.0.0.1:8879'). 36 37 This command is intended to be used for educational and testing purposes only. 38 It is best to rely on a dedicated web server or a cloud-hosted solution like 39 Google Cloud Storage for production use. 40 41 See https://github.com/kubernetes/helm/blob/master/docs/chart_repository.md#hosting-chart-repositories 42 for more information on hosting chart repositories in a production setting. 43 ` 44 45 type serveCmd struct { 46 out io.Writer 47 url string 48 address string 49 repoPath string 50 } 51 52 func newServeCmd(out io.Writer) *cobra.Command { 53 srv := &serveCmd{out: out} 54 cmd := &cobra.Command{ 55 Use: "serve", 56 Short: "start a local http web server", 57 Long: serveDesc, 58 PreRunE: func(cmd *cobra.Command, args []string) error { 59 return srv.complete() 60 }, 61 RunE: func(cmd *cobra.Command, args []string) error { 62 return srv.run() 63 }, 64 } 65 66 f := cmd.Flags() 67 f.StringVar(&srv.repoPath, "repo-path", "", "local directory path from which to serve charts") 68 f.StringVar(&srv.address, "address", "127.0.0.1:8879", "address to listen on") 69 f.StringVar(&srv.url, "url", "", "external URL of chart repository") 70 71 return cmd 72 } 73 74 func (s *serveCmd) complete() error { 75 if s.repoPath == "" { 76 s.repoPath = settings.Home.LocalRepository() 77 } 78 return nil 79 } 80 81 func (s *serveCmd) run() error { 82 repoPath, err := filepath.Abs(s.repoPath) 83 if err != nil { 84 return err 85 } 86 if _, err := os.Stat(repoPath); os.IsNotExist(err) { 87 return err 88 } 89 90 fmt.Fprintln(s.out, "Regenerating index. This may take a moment.") 91 if len(s.url) > 0 { 92 err = index(repoPath, s.url, "") 93 } else { 94 err = index(repoPath, "http://"+s.address, "") 95 } 96 if err != nil { 97 return err 98 } 99 100 fmt.Fprintf(s.out, "Now serving you on %s\n", s.address) 101 return repo.StartLocalRepo(repoPath, s.address) 102 }