package command import ( "fmt" "log" "os" "path/filepath" "strconv" "github.com/hashicorp/errwrap" "github.com/hashicorp/terraform/config" "github.com/hashicorp/terraform/config/module" "github.com/hashicorp/terraform/terraform" ) // NOTE: Temporary file until this branch is cleaned up. // Input returns whether or not input asking is enabled. func (m *Meta) Input() bool { if test || !m.input { return false } if envVar := os.Getenv(InputModeEnvVar); envVar != "" { if v, err := strconv.ParseBool(envVar); err == nil && !v { return false } } return true } // Module loads the module tree for the given root path. // // It expects the modules to already be downloaded. This will never // download any modules. func (m *Meta) Module(path string) (*module.Tree, error) { mod, err := module.NewTreeModule("", path) if err != nil { // Check for the error where we have no config files if errwrap.ContainsType(err, new(config.ErrNoConfigsFound)) { return nil, nil } return nil, err } err = mod.Load(m.moduleStorage(m.DataDir()), module.GetModeNone) if err != nil { return nil, errwrap.Wrapf("Error loading modules: {{err}}", err) } return mod, nil } // Config loads the root config for the path specified. Path may be a directory // or file. The absence of configuration is not an error and returns a nil Config. func (m *Meta) Config(path string) (*config.Config, error) { // If no explicit path was given then it is okay for there to be // no backend configuration found. emptyOk := path == "" // If we had no path set, it is an error. We can't initialize unset if path == "" { path = "." } // Expand the path if !filepath.IsAbs(path) { var err error path, err = filepath.Abs(path) if err != nil { return nil, fmt.Errorf( "Error expanding path to backend config %q: %s", path, err) } } log.Printf("[DEBUG] command: loading backend config file: %s", path) // We first need to determine if we're loading a file or a directory. fi, err := os.Stat(path) if err != nil { if os.IsNotExist(err) && emptyOk { log.Printf( "[INFO] command: backend config not found, returning nil: %s", path) return nil, nil } return nil, err } var f func(string) (*config.Config, error) = config.LoadFile if fi.IsDir() { f = config.LoadDir } // Load the configuration c, err := f(path) if err != nil { // Check for the error where we have no config files and return nil // as the configuration type. if errwrap.ContainsType(err, new(config.ErrNoConfigsFound)) { log.Printf( "[INFO] command: backend config not found, returning nil: %s", path) return nil, nil } return nil, err } return c, nil } // Plan returns the plan for the given path. // // This only has an effect if the path itself looks like a plan. // If error is nil and the plan is nil, then the path didn't look like // a plan. // // Error will be non-nil if path looks like a plan and loading the plan // failed. func (m *Meta) Plan(path string) (*terraform.Plan, error) { // Open the path no matter if its a directory or file f, err := os.Open(path) defer f.Close() if err != nil { return nil, fmt.Errorf( "Failed to load Terraform configuration or plan: %s", err) } // Stat it so we can check if its a directory fi, err := f.Stat() if err != nil { return nil, fmt.Errorf( "Failed to load Terraform configuration or plan: %s", err) } // If this path is a directory, then it can't be a plan. Not an error. if fi.IsDir() { return nil, nil } // Read the plan p, err := terraform.ReadPlan(f) if err != nil { return nil, err } // We do a validation here that seems odd but if any plan is given, // we must not have set any extra variables. The plan itself contains // the variables and those aren't overwritten. if len(m.variables) > 0 { return nil, fmt.Errorf( "You can't set variables with the '-var' or '-var-file' flag\n" + "when you're applying a plan file. The variables used when\n" + "the plan was created will be used. If you wish to use different\n" + "variable values, create a new plan file.") } return p, nil }