Add PULUMI_SKIP_CONFIRMATIONS env var (#4477)

CHANGELOG.md

@@ -23,6 +23,10 @@ CHANGELOG
 - Allow secrets to be decrypted when exporting a stack
   [#4046](https://github.com/pulumi/pulumi/pull/4046)
   
+- Commands checking for a confirmation or requiring a `--yes` flag can now be
+  skipped by setting `PULUMI_SKIP_CONFIRMATIONS` to `1` or `true`.
+  [#4477](https://github.com/pulumi/pulumi/pull/4477)
+  
 ## 2.1.1 (2020-05-11)
 
 - Add retry support when writing to state buckets

pkg/cmd/pulumi/destroy.go

@@ -62,6 +62,7 @@ func newDestroyCmd() *cobra.Command {
 			"Warning: this command is generally irreversible and should be used with great care.",
 		Args: cmdutil.NoArgs,
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
 			interactive := cmdutil.Interactive()
 			if !interactive && !yes {
 				return result.FromError(errors.New("--yes must be passed in to proceed when running in non-interactive mode"))

pkg/cmd/pulumi/new.go

@@ -352,6 +352,7 @@ func newNewCmd() *cobra.Command {
 			if len(cliArgs) > 0 {
 				args.templateNameOrURL = cliArgs[0]
 			}
+			args.yes = args.yes || skipConfirmations()
 			return runNew(args)
 		}),
 	}

pkg/cmd/pulumi/plugin_rm.go

@@ -46,6 +46,7 @@ func newPluginRmCmd() *cobra.Command {
 			"in order to execute a Pulumi program, it must be re-downloaded and installed\n" +
 			"using the plugin install command.",
 		Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
+			yes = yes || skipConfirmations()
 			opts := display.Options{
 				Color: cmdutil.GetGlobalColorization(),
 			}

pkg/cmd/pulumi/refresh.go

@@ -60,6 +60,7 @@ func newRefreshCmd() *cobra.Command {
 			"`--cwd` flag to use a different directory.",
 		Args: cmdutil.NoArgs,
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
 			interactive := cmdutil.Interactive()
 			if !interactive && !yes {
 				return result.FromError(errors.New("--yes must be passed in to proceed when running in non-interactive mode"))

pkg/cmd/pulumi/stack_rm.go

@@ -46,6 +46,7 @@ func newStackRmCmd() *cobra.Command {
 			"\n" +
 			"After this command completes, the stack will no longer be available for updates.",
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
 			// Use the stack provided or, if missing, default to the current one.
 			if len(args) > 0 {
 				if stack != "" {

pkg/cmd/pulumi/state_delete.go

@@ -50,6 +50,7 @@ pulumi state delete 'urn:pulumi:stage::demo::eks:index:Cluster$pulumi:providers:
 `,
 		Args: cmdutil.ExactArgs(1),
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
 			urn := resource.URN(args[0])
 			// Show the confirmation prompt if the user didn't pass the --yes parameter to skip it.
 			showPrompt := !yes

pkg/cmd/pulumi/state_unprotect.go

@@ -41,6 +41,7 @@ func newStateUnprotectCommand() *cobra.Command {
 This command clears the 'protect' bit on one or more resources, allowing those resources to be deleted.`,
 		Args: cmdutil.MaximumNArgs(1),
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
 			// Show the confirmation prompt if the user didn't pass the --yes parameter to skip it.
 			showPrompt := !yes
 

pkg/cmd/pulumi/up.go

@@ -331,6 +331,8 @@ func newUpCmd() *cobra.Command {
 			"`--cwd` flag to use a different directory.",
 		Args: cmdutil.MaximumNArgs(1),
 		Run: cmdutil.RunResultFunc(func(cmd *cobra.Command, args []string) result.Result {
+			yes = yes || skipConfirmations()
+
 			interactive := cmdutil.Interactive()
 			if !interactive && !yes {
 				return result.FromError(errors.New("--yes must be passed in to proceed when running in non-interactive mode"))

pkg/cmd/pulumi/util.go

@@ -66,6 +66,16 @@ func useLegacyDiff() bool {
 	return cmdutil.IsTruthy(os.Getenv("PULUMI_ENABLE_LEGACY_DIFF"))
 }
 
+// skipConfirmations returns whether or not confirmation prompts should
+// be skipped. This should be used by pass any requirement that a --yes
+// parameter has been set for non-interactive scenarios.
+//
+// This should NOT be used to bypass protections for destructive
+// operations, such as those that will fail without a --force parameter.
+func skipConfirmations() bool {
+	return cmdutil.IsTruthy(os.Getenv("PULUMI_SKIP_CONFIRMATIONS"))
+}
+
 // backendInstance is used to inject a backend mock from tests.
 var backendInstance backend.Backend