github.com/loafoe/helm@v1.0.1/cmd/helm/env.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 "sort" 23 24 "github.com/spf13/cobra" 25 26 "helm.sh/helm/v3/cmd/helm/require" 27 ) 28 29 var envHelp = ` 30 Env prints out all the environment information in use by Helm. 31 ` 32 33 func newEnvCmd(out io.Writer) *cobra.Command { 34 cmd := &cobra.Command{ 35 Use: "env", 36 Short: "helm client environment information", 37 Long: envHelp, 38 Args: require.MaximumNArgs(1), 39 ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { 40 if len(args) == 0 { 41 keys := getSortedEnvVarKeys() 42 return keys, cobra.ShellCompDirectiveNoFileComp 43 } 44 45 return nil, cobra.ShellCompDirectiveNoFileComp 46 }, 47 Run: func(cmd *cobra.Command, args []string) { 48 envVars := settings.EnvVars() 49 50 if len(args) == 0 { 51 // Sort the variables by alphabetical order. 52 // This allows for a constant output across calls to 'helm env'. 53 keys := getSortedEnvVarKeys() 54 55 for _, k := range keys { 56 fmt.Fprintf(out, "%s=\"%s\"\n", k, envVars[k]) 57 } 58 } else { 59 fmt.Fprintf(out, "%s\n", envVars[args[0]]) 60 } 61 }, 62 } 63 return cmd 64 } 65 66 func getSortedEnvVarKeys() []string { 67 envVars := settings.EnvVars() 68 69 var keys []string 70 for k := range envVars { 71 keys = append(keys, k) 72 } 73 sort.Strings(keys) 74 75 return keys 76 }