package command import ( "bytes" "context" "fmt" "os" "sort" "strings" "github.com/hashicorp/errwrap" "github.com/hashicorp/go-getter" "github.com/hashicorp/terraform/backend" "github.com/hashicorp/terraform/config" "github.com/hashicorp/terraform/config/module" "github.com/hashicorp/terraform/terraform" ) // ApplyCommand is a Command implementation that applies a Terraform // configuration and actually builds or changes infrastructure. type ApplyCommand struct { Meta // If true, then this apply command will become the "destroy" // command. It is just like apply but only processes a destroy. Destroy bool // When this channel is closed, the apply will be cancelled. ShutdownCh <-chan struct{} } func (c *ApplyCommand) Run(args []string) int { var destroyForce, refresh, autoApprove bool args, err := c.Meta.process(args, true) if err != nil { return 1 } cmdName := "apply" if c.Destroy { cmdName = "destroy" } cmdFlags := c.Meta.flagSet(cmdName) if c.Destroy { cmdFlags.BoolVar(&destroyForce, "force", false, "force") } cmdFlags.BoolVar(&refresh, "refresh", true, "refresh") if !c.Destroy { cmdFlags.BoolVar(&autoApprove, "auto-approve", true, "skip interactive approval of plan before applying") } cmdFlags.IntVar( &c.Meta.parallelism, "parallelism", DefaultParallelism, "parallelism") cmdFlags.StringVar(&c.Meta.statePath, "state", "", "path") cmdFlags.StringVar(&c.Meta.stateOutPath, "state-out", "", "path") cmdFlags.StringVar(&c.Meta.backupPath, "backup", "", "path") cmdFlags.BoolVar(&c.Meta.stateLock, "lock", true, "lock state") cmdFlags.DurationVar(&c.Meta.stateLockTimeout, "lock-timeout", 0, "lock timeout") cmdFlags.Usage = func() { c.Ui.Error(c.Help()) } if err := cmdFlags.Parse(args); err != nil { return 1 } // Get the args. The "maybeInit" flag tracks whether we may need to // initialize the configuration from a remote path. This is true as long // as we have an argument. args = cmdFlags.Args() maybeInit := len(args) == 1 configPath, err := ModulePath(args) if err != nil { c.Ui.Error(err.Error()) return 1 } // Check for user-supplied plugin path if c.pluginPath, err = c.loadPluginPath(); err != nil { c.Ui.Error(fmt.Sprintf("Error loading plugin path: %s", err)) return 1 } if !c.Destroy && maybeInit { // We need the pwd for the getter operation below pwd, err := os.Getwd() if err != nil { c.Ui.Error(fmt.Sprintf("Error getting pwd: %s", err)) return 1 } // Do a detect to determine if we need to do an init + apply. if detected, err := getter.Detect(configPath, pwd, getter.Detectors); err != nil { c.Ui.Error(fmt.Sprintf( "Invalid path: %s", err)) return 1 } else if !strings.HasPrefix(detected, "file") { // If this isn't a file URL then we're doing an init + // apply. var init InitCommand init.Meta = c.Meta if code := init.Run([]string{detected}); code != 0 { return code } // Change the config path to be the cwd configPath = pwd } } // Check if the path is a plan plan, err := c.Plan(configPath) if err != nil { c.Ui.Error(err.Error()) return 1 } if c.Destroy && plan != nil { c.Ui.Error(fmt.Sprintf( "Destroy can't be called with a plan file.")) return 1 } if plan != nil { // Reset the config path for backend loading configPath = "" if !autoApprove { c.Ui.Error("Cannot combine -auto-approve=false with a plan file.") return 1 } } // Load the module if we don't have one yet (not running from plan) var mod *module.Tree if plan == nil { mod, err = c.Module(configPath) if err != nil { err = errwrap.Wrapf("Failed to load root config module: {{err}}", err) c.showDiagnostics(err) return 1 } } /* terraform.SetDebugInfo(DefaultDataDir) // Check for the legacy graph if experiment.Enabled(experiment.X_legacyGraph) { c.Ui.Output(c.Colorize().Color( "[reset][bold][yellow]" + "Legacy graph enabled! This will use the graph from Terraform 0.7.x\n" + "to execute this operation. This will be removed in the future so\n" + "please report any issues causing you to use this to the Terraform\n" + "project.\n\n")) } */ var conf *config.Config if mod != nil { conf = mod.Config() } // Load the backend b, err := c.Backend(&BackendOpts{ Config: conf, Plan: plan, }) if err != nil { c.Ui.Error(fmt.Sprintf("Failed to load backend: %s", err)) return 1 } // Build the operation opReq := c.Operation() opReq.Destroy = c.Destroy opReq.Module = mod opReq.Plan = plan opReq.PlanRefresh = refresh opReq.Type = backend.OperationTypeApply opReq.AutoApprove = autoApprove opReq.DestroyForce = destroyForce // Perform the operation ctx, ctxCancel := context.WithCancel(context.Background()) defer ctxCancel() op, err := b.Operation(ctx, opReq) if err != nil { c.Ui.Error(fmt.Sprintf("Error starting operation: %s", err)) return 1 } // Wait for the operation to complete or an interrupt to occur select { case <-c.ShutdownCh: // Cancel our context so we can start gracefully exiting ctxCancel() // Notify the user c.Ui.Output(outputInterrupt) // Still get the result, since there is still one select { case <-c.ShutdownCh: c.Ui.Error( "Two interrupts received. Exiting immediately. Note that data\n" + "loss may have occurred.") return 1 case <-op.Done(): } case <-op.Done(): if err := op.Err; err != nil { c.showDiagnostics(err) return 1 } } if !c.Destroy { // Get the right module that we used. If we ran a plan, then use // that module. if plan != nil { mod = plan.Module } if outputs := outputsAsString(op.State, terraform.RootModulePath, mod.Config().Outputs, true); outputs != "" { c.Ui.Output(c.Colorize().Color(outputs)) } } return 0 } func (c *ApplyCommand) Help() string { if c.Destroy { return c.helpDestroy() } return c.helpApply() } func (c *ApplyCommand) Synopsis() string { if c.Destroy { return "Destroy Terraform-managed infrastructure" } return "Builds or changes infrastructure" } func (c *ApplyCommand) helpApply() string { helpText := ` Usage: terraform apply [options] [DIR-OR-PLAN] Builds or changes infrastructure according to Terraform configuration files in DIR. By default, apply scans the current directory for the configuration and applies the changes appropriately. However, a path to another configuration or an execution plan can be provided. Execution plans can be used to only execute a pre-determined set of actions. DIR can also be a SOURCE as given to the "init" command. In this case, apply behaves as though "init" was called followed by "apply". This only works for sources that aren't files, and only if the current working directory is empty of Terraform files. This is a shortcut for getting started. Options: -backup=path Path to backup the existing state file before modifying. Defaults to the "-state-out" path with ".backup" extension. Set to "-" to disable backup. -lock=true Lock the state file when locking is supported. -lock-timeout=0s Duration to retry a state lock. -auto-approve=true Skip interactive approval of plan before applying. In a future version of Terraform, this flag's default value will change to false. -input=true Ask for input for variables if not directly set. -no-color If specified, output won't contain any color. -parallelism=n Limit the number of parallel resource operations. Defaults to 10. -refresh=true Update state prior to checking for differences. This has no effect if a plan file is given to apply. -state=path Path to read and save state (unless state-out is specified). Defaults to "terraform.tfstate". -state-out=path Path to write state to that is different than "-state". This can be used to preserve the old state. -target=resource Resource to target. Operation will be limited to this resource and its dependencies. This flag can be used multiple times. -var 'foo=bar' Set a variable in the Terraform configuration. This flag can be set multiple times. -var-file=foo Set variables in the Terraform configuration from a file. If "terraform.tfvars" or any ".auto.tfvars" files are present, they will be automatically loaded. ` return strings.TrimSpace(helpText) } func (c *ApplyCommand) helpDestroy() string { helpText := ` Usage: terraform destroy [options] [DIR] Destroy Terraform-managed infrastructure. Options: -backup=path Path to backup the existing state file before modifying. Defaults to the "-state-out" path with ".backup" extension. Set to "-" to disable backup. -force Don't ask for input for destroy confirmation. -lock=true Lock the state file when locking is supported. -lock-timeout=0s Duration to retry a state lock. -no-color If specified, output won't contain any color. -parallelism=n Limit the number of concurrent operations. Defaults to 10. -refresh=true Update state prior to checking for differences. This has no effect if a plan file is given to apply. -state=path Path to read and save state (unless state-out is specified). Defaults to "terraform.tfstate". -state-out=path Path to write state to that is different than "-state". This can be used to preserve the old state. -target=resource Resource to target. Operation will be limited to this resource and its dependencies. This flag can be used multiple times. -var 'foo=bar' Set a variable in the Terraform configuration. This flag can be set multiple times. -var-file=foo Set variables in the Terraform configuration from a file. If "terraform.tfvars" or any ".auto.tfvars" files are present, they will be automatically loaded. ` return strings.TrimSpace(helpText) } func outputsAsString(state *terraform.State, modPath []string, schema []*config.Output, includeHeader bool) string { if state == nil { return "" } ms := state.ModuleByPath(modPath) if ms == nil { return "" } outputs := ms.Outputs outputBuf := new(bytes.Buffer) if len(outputs) > 0 { schemaMap := make(map[string]*config.Output) if schema != nil { for _, s := range schema { schemaMap[s.Name] = s } } if includeHeader { outputBuf.WriteString("[reset][bold][green]\nOutputs:\n\n") } // Output the outputs in alphabetical order keyLen := 0 ks := make([]string, 0, len(outputs)) for key, _ := range outputs { ks = append(ks, key) if len(key) > keyLen { keyLen = len(key) } } sort.Strings(ks) for _, k := range ks { schema, ok := schemaMap[k] if ok && schema.Sensitive { outputBuf.WriteString(fmt.Sprintf("%s = \n", k)) continue } v := outputs[k] switch typedV := v.Value.(type) { case string: outputBuf.WriteString(fmt.Sprintf("%s = %s\n", k, typedV)) case []interface{}: outputBuf.WriteString(formatListOutput("", k, typedV)) outputBuf.WriteString("\n") case map[string]interface{}: outputBuf.WriteString(formatMapOutput("", k, typedV)) outputBuf.WriteString("\n") } } } return strings.TrimSpace(outputBuf.String()) } const outputInterrupt = `Interrupt received. Please wait for Terraform to exit or data loss may occur. Gracefully shutting down...`