github.com/appscode/helm@v3.0.0-alpha.1+incompatible/cmd/helm/plugin_install.go (about) 1 /* 2 Copyright The Helm Authors. 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 */ 15 16 package main 17 18 import ( 19 "fmt" 20 "io" 21 22 "github.com/spf13/cobra" 23 24 "helm.sh/helm/cmd/helm/require" 25 "helm.sh/helm/pkg/helmpath" 26 "helm.sh/helm/pkg/plugin" 27 "helm.sh/helm/pkg/plugin/installer" 28 ) 29 30 type pluginInstallOptions struct { 31 source string 32 version string 33 home helmpath.Home 34 } 35 36 const pluginInstallDesc = ` 37 This command allows you to install a plugin from a url to a VCS repo or a local path. 38 39 Example usage: 40 $ helm plugin install https://github.com/technosophos/helm-template 41 ` 42 43 func newPluginInstallCmd(out io.Writer) *cobra.Command { 44 o := &pluginInstallOptions{} 45 cmd := &cobra.Command{ 46 Use: "install [options] <path|url>...", 47 Short: "install one or more Helm plugins", 48 Long: pluginInstallDesc, 49 Args: require.ExactArgs(1), 50 PreRunE: func(cmd *cobra.Command, args []string) error { 51 return o.complete(args) 52 }, 53 RunE: func(cmd *cobra.Command, args []string) error { 54 return o.run(out) 55 }, 56 } 57 cmd.Flags().StringVar(&o.version, "version", "", "specify a version constraint. If this is not specified, the latest version is installed") 58 return cmd 59 } 60 61 func (o *pluginInstallOptions) complete(args []string) error { 62 o.source = args[0] 63 o.home = settings.Home 64 return nil 65 } 66 67 func (o *pluginInstallOptions) run(out io.Writer) error { 68 installer.Debug = settings.Debug 69 70 i, err := installer.NewForSource(o.source, o.version, o.home) 71 if err != nil { 72 return err 73 } 74 if err := installer.Install(i); err != nil { 75 return err 76 } 77 78 debug("loading plugin from %s", i.Path()) 79 p, err := plugin.LoadDir(i.Path()) 80 if err != nil { 81 return err 82 } 83 84 if err := runHook(p, plugin.Install); err != nil { 85 return err 86 } 87 88 fmt.Fprintf(out, "Installed plugin: %s\n", p.Metadata.Name) 89 return nil 90 }