github.com/Racer159/helm-experiment@v0.0.0-20230822001441-1eb31183f614/src/get_values.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 "log" 23 24 "github.com/spf13/cobra" 25 26 "helm.sh/helm/v3/cmd/helm/require" 27 "helm.sh/helm/v3/pkg/action" 28 "helm.sh/helm/v3/pkg/cli/output" 29 ) 30 31 var getValuesHelp = ` 32 This command downloads a values file for a given release. 33 ` 34 35 type valuesWriter struct { 36 vals map[string]interface{} 37 allValues bool 38 } 39 40 func newGetValuesCmd(cfg *action.Configuration, out io.Writer) *cobra.Command { 41 var outfmt output.Format 42 client := action.NewGetValues(cfg) 43 44 cmd := &cobra.Command{ 45 Use: "values RELEASE_NAME", 46 Short: "download the values file for a named release", 47 Long: getValuesHelp, 48 Args: require.ExactArgs(1), 49 ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { 50 if len(args) != 0 { 51 return nil, cobra.ShellCompDirectiveNoFileComp 52 } 53 return compListReleases(toComplete, args, cfg) 54 }, 55 RunE: func(cmd *cobra.Command, args []string) error { 56 vals, err := client.Run(args[0]) 57 if err != nil { 58 return err 59 } 60 return outfmt.Write(out, &valuesWriter{vals, client.AllValues}) 61 }, 62 } 63 64 f := cmd.Flags() 65 f.IntVar(&client.Version, "revision", 0, "get the named release with revision") 66 err := cmd.RegisterFlagCompletionFunc("revision", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { 67 if len(args) == 1 { 68 return compListRevisions(toComplete, cfg, args[0]) 69 } 70 return nil, cobra.ShellCompDirectiveNoFileComp 71 }) 72 73 if err != nil { 74 log.Fatal(err) 75 } 76 77 f.BoolVarP(&client.AllValues, "all", "a", false, "dump all (computed) values") 78 bindOutputFlag(cmd, &outfmt) 79 80 return cmd 81 } 82 83 func (v valuesWriter) WriteTable(out io.Writer) error { 84 if v.allValues { 85 fmt.Fprintln(out, "COMPUTED VALUES:") 86 } else { 87 fmt.Fprintln(out, "USER-SUPPLIED VALUES:") 88 } 89 return output.EncodeYAML(out, v.vals) 90 } 91 92 func (v valuesWriter) WriteJSON(out io.Writer) error { 93 return output.EncodeJSON(out, v.vals) 94 } 95 96 func (v valuesWriter) WriteYAML(out io.Writer) error { 97 return output.EncodeYAML(out, v.vals) 98 }