github.com/appscode/helm@v3.0.0-alpha.1+incompatible/cmd/helm/plugin_update.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 "path/filepath" 22 "strings" 23 24 "github.com/pkg/errors" 25 "github.com/spf13/cobra" 26 27 "helm.sh/helm/pkg/helmpath" 28 "helm.sh/helm/pkg/plugin" 29 "helm.sh/helm/pkg/plugin/installer" 30 ) 31 32 type pluginUpdateOptions struct { 33 names []string 34 home helmpath.Home 35 } 36 37 func newPluginUpdateCmd(out io.Writer) *cobra.Command { 38 o := &pluginUpdateOptions{} 39 cmd := &cobra.Command{ 40 Use: "update <plugin>...", 41 Short: "update one or more Helm plugins", 42 PreRunE: func(cmd *cobra.Command, args []string) error { 43 return o.complete(args) 44 }, 45 RunE: func(cmd *cobra.Command, args []string) error { 46 return o.run(out) 47 }, 48 } 49 return cmd 50 } 51 52 func (o *pluginUpdateOptions) complete(args []string) error { 53 if len(args) == 0 { 54 return errors.New("please provide plugin name to update") 55 } 56 o.names = args 57 o.home = settings.Home 58 return nil 59 } 60 61 func (o *pluginUpdateOptions) run(out io.Writer) error { 62 installer.Debug = settings.Debug 63 debug("loading installed plugins from %s", settings.PluginDirs()) 64 plugins, err := findPlugins(settings.PluginDirs()) 65 if err != nil { 66 return err 67 } 68 var errorPlugins []string 69 70 for _, name := range o.names { 71 if found := findPlugin(plugins, name); found != nil { 72 if err := updatePlugin(found, o.home); err != nil { 73 errorPlugins = append(errorPlugins, fmt.Sprintf("Failed to update plugin %s, got error (%v)", name, err)) 74 } else { 75 fmt.Fprintf(out, "Updated plugin: %s\n", name) 76 } 77 } else { 78 errorPlugins = append(errorPlugins, fmt.Sprintf("Plugin: %s not found", name)) 79 } 80 } 81 if len(errorPlugins) > 0 { 82 return errors.Errorf(strings.Join(errorPlugins, "\n")) 83 } 84 return nil 85 } 86 87 func updatePlugin(p *plugin.Plugin, home helmpath.Home) error { 88 exactLocation, err := filepath.EvalSymlinks(p.Dir) 89 if err != nil { 90 return err 91 } 92 absExactLocation, err := filepath.Abs(exactLocation) 93 if err != nil { 94 return err 95 } 96 97 i, err := installer.FindSource(absExactLocation, home) 98 if err != nil { 99 return err 100 } 101 if err := installer.Update(i); err != nil { 102 return err 103 } 104 105 debug("loading plugin from %s", i.Path()) 106 updatedPlugin, err := plugin.LoadDir(i.Path()) 107 if err != nil { 108 return err 109 } 110 111 return runHook(updatedPlugin, plugin.Update) 112 }