github.com/skyscape-cloud-services/terraform@v0.9.2-0.20170609144644-7ece028a1747/command/get.go (about) 1 package command 2 3 import ( 4 "flag" 5 "fmt" 6 "strings" 7 8 "github.com/hashicorp/terraform/config/module" 9 ) 10 11 // GetCommand is a Command implementation that takes a Terraform 12 // configuration and downloads all the modules. 13 type GetCommand struct { 14 Meta 15 } 16 17 func (c *GetCommand) Run(args []string) int { 18 var update bool 19 20 args = c.Meta.process(args, false) 21 22 cmdFlags := flag.NewFlagSet("get", flag.ContinueOnError) 23 cmdFlags.BoolVar(&update, "update", false, "update") 24 cmdFlags.Usage = func() { c.Ui.Error(c.Help()) } 25 if err := cmdFlags.Parse(args); err != nil { 26 return 1 27 } 28 29 var path string 30 path, err := ModulePath(cmdFlags.Args()) 31 if err != nil { 32 c.Ui.Error(err.Error()) 33 return 1 34 } 35 36 mode := module.GetModeGet 37 if update { 38 mode = module.GetModeUpdate 39 } 40 41 if err := getModules(&c.Meta, path, mode); err != nil { 42 c.Ui.Error(err.Error()) 43 return 1 44 } 45 46 return 0 47 } 48 49 func (c *GetCommand) Help() string { 50 helpText := ` 51 Usage: terraform get [options] PATH 52 53 Downloads and installs modules needed for the configuration given by 54 PATH. 55 56 This recursively downloads all modules needed, such as modules 57 imported by modules imported by the root and so on. If a module is 58 already downloaded, it will not be redownloaded or checked for updates 59 unless the -update flag is specified. 60 61 Options: 62 63 -update=false If true, modules already downloaded will be checked 64 for updates and updated if necessary. 65 66 -no-color If specified, output won't contain any color. 67 68 ` 69 return strings.TrimSpace(helpText) 70 } 71 72 func (c *GetCommand) Synopsis() string { 73 return "Download and install modules for the configuration" 74 } 75 76 func getModules(m *Meta, path string, mode module.GetMode) error { 77 mod, err := module.NewTreeModule("", path) 78 if err != nil { 79 return fmt.Errorf("Error loading configuration: %s", err) 80 } 81 82 err = mod.Load(m.moduleStorage(m.DataDir()), mode) 83 if err != nil { 84 return fmt.Errorf("Error loading modules: %s", err) 85 } 86 87 return nil 88 }