github.com/darkowlzz/helm@v2.5.1-0.20171213183701-6707fe0468d4+incompatible/cmd/helm/create.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 "path/filepath" 24 25 "github.com/spf13/cobra" 26 27 "k8s.io/helm/pkg/chartutil" 28 "k8s.io/helm/pkg/helm/helmpath" 29 "k8s.io/helm/pkg/proto/hapi/chart" 30 ) 31 32 const createDesc = ` 33 This command creates a chart directory along with the common files and 34 directories used in a chart. 35 36 For example, 'helm create foo' will create a directory structure that looks 37 something like this: 38 39 foo/ 40 | 41 |- .helmignore # Contains patterns to ignore when packaging Helm charts. 42 | 43 |- Chart.yaml # Information about your chart 44 | 45 |- values.yaml # The default values for your templates 46 | 47 |- charts/ # Charts that this chart depends on 48 | 49 |- templates/ # The template files 50 51 'helm create' takes a path for an argument. If directories in the given path 52 do not exist, Helm will attempt to create them as it goes. If the given 53 destination exists and there are files in that directory, conflicting files 54 will be overwritten, but other files will be left alone. 55 ` 56 57 type createCmd struct { 58 home helmpath.Home 59 name string 60 out io.Writer 61 starter string 62 } 63 64 func newCreateCmd(out io.Writer) *cobra.Command { 65 cc := &createCmd{out: out} 66 67 cmd := &cobra.Command{ 68 Use: "create NAME", 69 Short: "create a new chart with the given name", 70 Long: createDesc, 71 RunE: func(cmd *cobra.Command, args []string) error { 72 cc.home = settings.Home 73 if len(args) == 0 { 74 return errors.New("the name of the new chart is required") 75 } 76 cc.name = args[0] 77 return cc.run() 78 }, 79 } 80 81 cmd.Flags().StringVarP(&cc.starter, "starter", "p", "", "the named Helm starter scaffold") 82 return cmd 83 } 84 85 func (c *createCmd) run() error { 86 fmt.Fprintf(c.out, "Creating %s\n", c.name) 87 88 chartname := filepath.Base(c.name) 89 cfile := &chart.Metadata{ 90 Name: chartname, 91 Description: "A Helm chart for Kubernetes", 92 Version: "0.1.0", 93 ApiVersion: chartutil.ApiVersionV1, 94 } 95 96 if c.starter != "" { 97 // Create from the starter 98 lstarter := filepath.Join(c.home.Starters(), c.starter) 99 return chartutil.CreateFrom(cfile, filepath.Dir(c.name), lstarter) 100 } 101 102 _, err := chartutil.Create(cfile, filepath.Dir(c.name)) 103 return err 104 }