github.com/Racer159/helm-experiment@v0.0.0-20230822001441-1eb31183f614/src/create.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 cmd 18 19 import ( 20 "fmt" 21 "io" 22 "path/filepath" 23 24 "github.com/spf13/cobra" 25 26 "helm.sh/helm/v3/cmd/helm/require" 27 "helm.sh/helm/v3/pkg/chart" 28 "helm.sh/helm/v3/pkg/chartutil" 29 "helm.sh/helm/v3/pkg/helmpath" 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 ├── .helmignore # Contains patterns to ignore when packaging Helm charts. 41 ├── Chart.yaml # Information about your chart 42 ├── values.yaml # The default values for your templates 43 ├── charts/ # Charts that this chart depends on 44 └── templates/ # The template files 45 └── tests/ # The test files 46 47 'helm create' takes a path for an argument. If directories in the given path 48 do not exist, Helm will attempt to create them as it goes. If the given 49 destination exists and there are files in that directory, conflicting files 50 will be overwritten, but other files will be left alone. 51 ` 52 53 type createOptions struct { 54 starter string // --starter 55 name string 56 starterDir string 57 } 58 59 func newCreateCmd(out io.Writer) *cobra.Command { 60 o := &createOptions{} 61 62 cmd := &cobra.Command{ 63 Use: "create NAME", 64 Short: "create a new chart with the given name", 65 Long: createDesc, 66 Args: require.ExactArgs(1), 67 ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { 68 if len(args) == 0 { 69 // Allow file completion when completing the argument for the name 70 // which could be a path 71 return nil, cobra.ShellCompDirectiveDefault 72 } 73 // No more completions, so disable file completion 74 return nil, cobra.ShellCompDirectiveNoFileComp 75 }, 76 RunE: func(cmd *cobra.Command, args []string) error { 77 o.name = args[0] 78 o.starterDir = helmpath.DataPath("starters") 79 return o.run(out) 80 }, 81 } 82 83 cmd.Flags().StringVarP(&o.starter, "starter", "p", "", "the name or absolute path to Helm starter scaffold") 84 return cmd 85 } 86 87 func (o *createOptions) run(out io.Writer) error { 88 fmt.Fprintf(out, "Creating %s\n", o.name) 89 90 chartname := filepath.Base(o.name) 91 cfile := &chart.Metadata{ 92 Name: chartname, 93 Description: "A Helm chart for Kubernetes", 94 Type: "application", 95 Version: "0.1.0", 96 AppVersion: "0.1.0", 97 APIVersion: chart.APIVersionV2, 98 } 99 100 if o.starter != "" { 101 // Create from the starter 102 lstarter := filepath.Join(o.starterDir, o.starter) 103 // If path is absolute, we don't want to prefix it with helm starters folder 104 if filepath.IsAbs(o.starter) { 105 lstarter = o.starter 106 } 107 return chartutil.CreateFrom(cfile, filepath.Dir(o.name), lstarter) 108 } 109 110 chartutil.Stderr = out 111 _, err := chartutil.Create(chartname, filepath.Dir(o.name)) 112 return err 113 }