github.com/strongmonkey/helm@v2.7.2+incompatible/cmd/helm/plugin_install.go (about) 1 /* 2 Copyright 2016 The Kubernetes Authors All rights reserved. 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 "k8s.io/helm/pkg/helm/helmpath" 23 "k8s.io/helm/pkg/plugin" 24 "k8s.io/helm/pkg/plugin/installer" 25 26 "github.com/spf13/cobra" 27 ) 28 29 type pluginInstallCmd struct { 30 source string 31 version string 32 home helmpath.Home 33 out io.Writer 34 } 35 36 func newPluginInstallCmd(out io.Writer) *cobra.Command { 37 pcmd := &pluginInstallCmd{out: out} 38 cmd := &cobra.Command{ 39 Use: "install [options] <path|url>...", 40 Short: "install one or more Helm plugins", 41 PreRunE: func(cmd *cobra.Command, args []string) error { 42 return pcmd.complete(args) 43 }, 44 RunE: func(cmd *cobra.Command, args []string) error { 45 return pcmd.run() 46 }, 47 } 48 cmd.Flags().StringVar(&pcmd.version, "version", "", "specify a version constraint. If this is not specified, the latest version is installed") 49 return cmd 50 } 51 52 func (pcmd *pluginInstallCmd) complete(args []string) error { 53 if err := checkArgsLength(len(args), "plugin"); err != nil { 54 return err 55 } 56 pcmd.source = args[0] 57 pcmd.home = settings.Home 58 return nil 59 } 60 61 func (pcmd *pluginInstallCmd) run() error { 62 installer.Debug = settings.Debug 63 64 i, err := installer.NewForSource(pcmd.source, pcmd.version, pcmd.home) 65 if err != nil { 66 return err 67 } 68 if err := installer.Install(i); err != nil { 69 return err 70 } 71 72 debug("loading plugin from %s", i.Path()) 73 p, err := plugin.LoadDir(i.Path()) 74 if err != nil { 75 return err 76 } 77 78 if err := runHook(p, plugin.Install); err != nil { 79 return err 80 } 81 82 fmt.Fprintf(pcmd.out, "Installed plugin: %s\n", p.Metadata.Name) 83 return nil 84 }