Merge pull request #27760 from hashicorp/alisdair/command-views-ui-hook

cli: Migrate Terraform UI hook to command views

backend/backend.go

@@ -183,6 +183,10 @@ type Operation struct {
 	// configuration from ConfigDir.
 	ConfigLoader *configload.Loader
 
+	// Hooks can be used to perform actions triggered by various events during
+	// the operation's lifecycle.
+	Hooks []terraform.Hook
+
 	// Plan is a plan that was passed as an argument. This is valid for
 	// plan and apply arguments but may not work for all backends.
 	PlanFile *planfile.Reader

backend/local/backend_apply.go

@@ -40,12 +40,7 @@ func (b *Local) opApply(
 	}
 
 	stateHook := new(StateHook)
-	if b.ContextOpts == nil {
+	op.Hooks = append(op.Hooks, stateHook)
-		b.ContextOpts = new(terraform.ContextOpts)
-	}
-	old := b.ContextOpts.Hooks
-	defer func() { b.ContextOpts.Hooks = old }()
-	b.ContextOpts.Hooks = append(b.ContextOpts.Hooks, stateHook)
 
 	// Get our context
 	tfCtx, _, opState, contextDiags := b.context(op)

backend/local/backend_local.go

@@ -77,6 +77,7 @@ func (b *Local) context(op *backend.Operation) (*terraform.Context, *configload.
 	opts.Destroy = op.Destroy
 	opts.Targets = op.Targets
 	opts.UIInput = op.UIIn
+	opts.Hooks = op.Hooks
 
 	opts.SkipRefresh = op.Type != backend.OperationTypeRefresh && !op.PlanRefresh
 	if opts.SkipRefresh {

command/apply.go

@@ -8,6 +8,7 @@ import (
 	"github.com/hashicorp/terraform/command/arguments"
 	"github.com/hashicorp/terraform/command/views"
 	"github.com/hashicorp/terraform/plans/planfile"
+	"github.com/hashicorp/terraform/terraform"
 	"github.com/hashicorp/terraform/tfdiags"
 )
 
@@ -110,7 +111,6 @@ func (c *ApplyCommand) Run(args []string) int {
 
 	// Set up our count hook that keeps track of resource changes
 	countHook := new(CountHook)
-	c.ExtraHooks = append(c.ExtraHooks, countHook)
 
 	// Load the backend
 	var be backend.Enhanced
@@ -171,6 +171,7 @@ func (c *ApplyCommand) Run(args []string) int {
 	opReq.AutoApprove = autoApprove
 	opReq.ConfigDir = configPath
 	opReq.Destroy = c.Destroy
+	opReq.Hooks = []terraform.Hook{countHook, c.uiHook()}
 	opReq.PlanFile = planFile
 	opReq.PlanRefresh = refresh
 	opReq.ShowDiagnostics = c.showDiagnostics

command/apply_test.go

@@ -941,10 +941,12 @@ func TestApply_planNoModuleFiles(t *testing.T) {
 	p := applyFixtureProvider()
 	planPath := applyFixturePlanFile(t)
 
+	view, _ := testView(t)
 	apply := &ApplyCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               new(cli.MockUi),
+			View:             view,
 		},
 	}
 	args := []string{

command/import.go

@@ -189,6 +189,7 @@ func (c *ImportCommand) Run(args []string) int {
 		c.showDiagnostics(diags)
 		return 1
 	}
+	opReq.Hooks = []terraform.Hook{c.uiHook()}
 	{
 		var moreDiags tfdiags.Diagnostics
 		opReq.Variables, moreDiags = c.collectVariableValues()

command/import_test.go

@@ -24,10 +24,12 @@ func TestImport(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -77,10 +79,12 @@ func TestImport_providerConfig(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -170,9 +174,11 @@ func TestImport_remoteState(t *testing.T) {
 
 	// init our backend
 	ui := cli.NewMockUi()
+	view, _ := testView(t)
 	m := Meta{
 		testingOverrides: metaOverridesForProvider(testProvider()),
 		Ui:               ui,
+		View:             view,
 		ProviderSource:   providerSource,
 	}
 
@@ -192,6 +198,7 @@ func TestImport_remoteState(t *testing.T) {
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -280,9 +287,11 @@ func TestImport_initializationErrorShouldUnlock(t *testing.T) {
 
 	// init our backend
 	ui := cli.NewMockUi()
+	view, _ := testView(t)
 	m := Meta{
 		testingOverrides: metaOverridesForProvider(testProvider()),
 		Ui:               ui,
+		View:             view,
 		ProviderSource:   providerSource,
 	}
 
@@ -305,6 +314,7 @@ func TestImport_initializationErrorShouldUnlock(t *testing.T) {
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -339,10 +349,12 @@ func TestImport_providerConfigWithVar(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -417,10 +429,12 @@ func TestImport_providerConfigWithDataSource(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -480,10 +494,12 @@ func TestImport_providerConfigWithVarDefault(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -557,10 +573,12 @@ func TestImport_providerConfigWithVarFile(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -635,10 +653,12 @@ func TestImport_allowMissingResourceConfig(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -690,10 +710,12 @@ func TestImport_emptyConfig(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -720,10 +742,12 @@ func TestImport_missingResourceConfig(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -750,10 +774,12 @@ func TestImport_missingModuleConfig(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -801,9 +827,11 @@ func TestImportModuleVarFile(t *testing.T) {
 
 	// init to install the module
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	m := Meta{
 		testingOverrides: metaOverridesForProvider(testProvider()),
 		Ui:               ui,
+		View:             view,
 		ProviderSource:   providerSource,
 	}
 
@@ -820,6 +848,7 @@ func TestImportModuleVarFile(t *testing.T) {
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 	args := []string{
@@ -873,9 +902,11 @@ func TestImportModuleInputVariableEvaluation(t *testing.T) {
 
 	// init to install the module
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	m := Meta{
 		testingOverrides: metaOverridesForProvider(testProvider()),
 		Ui:               ui,
+		View:             view,
 		ProviderSource:   providerSource,
 	}
 
@@ -892,6 +923,7 @@ func TestImportModuleInputVariableEvaluation(t *testing.T) {
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 	args := []string{
@@ -912,10 +944,12 @@ func TestImport_dataResource(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -942,10 +976,12 @@ func TestImport_invalidResourceAddr(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -972,10 +1008,12 @@ func TestImport_targetIsModule(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &ImportCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 

command/meta.go

@@ -21,6 +21,7 @@ import (
 	"github.com/hashicorp/terraform/addrs"
 	"github.com/hashicorp/terraform/backend"
 	"github.com/hashicorp/terraform/backend/local"
+	"github.com/hashicorp/terraform/command/arguments"
 	"github.com/hashicorp/terraform/command/format"
 	"github.com/hashicorp/terraform/command/views"
 	"github.com/hashicorp/terraform/command/webbrowser"
@@ -69,9 +70,6 @@ type Meta struct {
 	GlobalPluginDirs []string // Additional paths to search for plugins
 	Ui               cli.Ui   // Ui for output
 
-	// ExtraHooks are extra hooks to add to the context.
-	ExtraHooks []terraform.Hook
-
 	// Services provides access to remote endpoint information for
 	// "terraform-native' services running at a specific user-facing hostname.
 	Services *disco.Disco
@@ -434,8 +432,6 @@ func (m *Meta) contextOpts() (*terraform.ContextOpts, error) {
 	}
 
 	var opts terraform.ContextOpts
-	opts.Hooks = []terraform.Hook{m.uiHook()}
-	opts.Hooks = append(opts.Hooks, m.ExtraHooks...)
 
 	opts.Targets = m.targets
 	opts.UIInput = m.UIInput()
@@ -621,15 +617,21 @@ func (m *Meta) process(args []string) []string {
 		},
 	}
 
+	// Reconfigure the view. This is necessary for commands which use both
+	// views.View and cli.Ui during the migration phase.
+	if m.View != nil {
+		m.View.Configure(&arguments.View{
+			CompactWarnings: m.compactWarnings,
+			NoColor:         !m.Color,
+		})
+	}
+
 	return args
 }
 
 // uiHook returns the UiHook to use with the context.
-func (m *Meta) uiHook() *UiHook {
+func (m *Meta) uiHook() *views.UiHook {
-	return &UiHook{
+	return views.NewUiHook(m.View)
-		Colorize: m.Colorize(),
-		Ui:       m.Ui,
-	}
 }
 
 // confirm asks a yes/no confirmation.

command/plan.go

@@ -7,6 +7,7 @@ import (
 	"github.com/hashicorp/terraform/backend"
 	"github.com/hashicorp/terraform/configs"
 	"github.com/hashicorp/terraform/plans"
+	"github.com/hashicorp/terraform/terraform"
 	"github.com/hashicorp/terraform/tfdiags"
 )
 
@@ -82,6 +83,7 @@ func (c *PlanCommand) Run(args []string) int {
 	opReq := c.Operation(b)
 	opReq.ConfigDir = configPath
 	opReq.Destroy = destroy
+	opReq.Hooks = []terraform.Hook{c.uiHook()}
 	opReq.PlanOutPath = outPath
 	opReq.PlanRefresh = refresh
 	opReq.ShowDiagnostics = c.showDiagnostics

command/plan_test.go

@@ -32,10 +32,12 @@ func TestPlan(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -59,10 +61,12 @@ func TestPlan_lockedState(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -85,10 +89,12 @@ func TestPlan_plan(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -126,10 +132,12 @@ func TestPlan_destroy(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -158,10 +166,12 @@ func TestPlan_noState(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -193,10 +203,12 @@ func TestPlan_outPath(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -246,10 +258,12 @@ func TestPlan_outPathNoChange(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -324,10 +338,12 @@ func TestPlan_outBackend(t *testing.T) {
 		}
 	}
 	ui := cli.NewMockUi()
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -376,10 +392,12 @@ func TestPlan_refreshFalse(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -407,10 +425,12 @@ func TestPlan_state(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -450,10 +470,12 @@ func TestPlan_stateDefault(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -505,10 +527,12 @@ func TestPlan_validate(t *testing.T) {
 		}
 	}
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -532,10 +556,12 @@ func TestPlan_vars(t *testing.T) {
 
 	p := planVarsFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -577,10 +603,12 @@ func TestPlan_varsUnset(t *testing.T) {
 
 	p := planVarsFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -640,10 +668,12 @@ func TestPlan_providerArgumentUnset(t *testing.T) {
 		},
 	}
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -667,10 +697,12 @@ func TestPlan_varFile(t *testing.T) {
 
 	p := planVarsFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -707,10 +739,12 @@ func TestPlan_varFileDefault(t *testing.T) {
 
 	p := planVarsFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -745,10 +779,12 @@ func TestPlan_varFileWithDecls(t *testing.T) {
 
 	p := planVarsFixtureProvider()
 	ui := cli.NewMockUi()
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -773,10 +809,12 @@ func TestPlan_detailedExitcode(t *testing.T) {
 
 	p := planFixtureProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -794,10 +832,12 @@ func TestPlan_detailedExitcode_emptyDiff(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -819,10 +859,12 @@ func TestPlan_shutdown(t *testing.T) {
 
 	p := testProvider()
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 			ShutdownCh:       shutdownCh,
 		},
 	}
@@ -884,10 +926,12 @@ func TestPlan_init_required(t *testing.T) {
 	defer testChdir(t, td)()
 
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			// Running plan without setting testingOverrides is similar to plan without init
-			Ui: ui,
+			Ui:   ui,
+			View: view,
 		},
 	}
 
@@ -927,10 +971,12 @@ func TestPlan_targeted(t *testing.T) {
 	}
 
 	ui := new(cli.MockUi)
+	view, _ := testView(t)
 	c := &PlanCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
 			Ui:               ui,
+			View:             view,
 		},
 	}
 
@@ -961,9 +1007,11 @@ func TestPlan_targetFlagsDiags(t *testing.T) {
 			defer testChdir(t, td)()
 
 			ui := new(cli.MockUi)
+			view, _ := testView(t)
 			c := &PlanCommand{
 				Meta: Meta{
-					Ui: ui,
+					Ui:   ui,
+					View: view,
 				},
 			}
 

command/refresh.go

@@ -7,6 +7,7 @@ import (
 	"github.com/hashicorp/terraform/backend"
 	"github.com/hashicorp/terraform/command/arguments"
 	"github.com/hashicorp/terraform/command/views"
+	"github.com/hashicorp/terraform/terraform"
 	"github.com/hashicorp/terraform/tfdiags"
 )
 
@@ -75,6 +76,7 @@ func (c *RefreshCommand) Run(args []string) int {
 	// Build the operation
 	opReq := c.Operation(b)
 	opReq.ConfigDir = configPath
+	opReq.Hooks = []terraform.Hook{c.uiHook()}
 	opReq.ShowDiagnostics = c.showDiagnostics
 	opReq.Type = backend.OperationTypeRefresh
 

command/refresh_test.go

@@ -791,7 +791,7 @@ func TestRefresh_targeted(t *testing.T) {
 	}
 
 	ui := new(cli.MockUi)
-	view, _ := testView(t)
+	view, done := testView(t)
 	c := &RefreshCommand{
 		Meta: Meta{
 			testingOverrides: metaOverridesForProvider(p),
@@ -808,7 +808,7 @@ func TestRefresh_targeted(t *testing.T) {
 		t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
 	}
 
-	got := ui.OutputWriter.String()
+	got := done(t).Stdout()
 	if want := "test_instance.foo: Refreshing"; !strings.Contains(got, want) {
 		t.Fatalf("expected output to contain %q, got:\n%s", want, got)
 	}

command/show_test.go

@@ -255,9 +255,11 @@ func TestShow_json_output(t *testing.T) {
 
 			p := showFixtureProvider()
 			ui := new(cli.MockUi)
+			view, _ := testView(t)
 			m := Meta{
 				testingOverrides: metaOverridesForProvider(p),
 				Ui:               ui,
+				View:             view,
 				ProviderSource:   providerSource,
 			}
 

command/views/hook_ui.go

@@ -1,4 +1,4 @@
-package command
+package views
 
 import (
 	"bufio"
@@ -9,8 +9,6 @@ import (
 	"time"
 	"unicode"
 
-	"github.com/mitchellh/cli"
-	"github.com/mitchellh/colorstring"
 	"github.com/zclconf/go-cty/cty"
 
 	"github.com/hashicorp/terraform/addrs"
@@ -24,17 +22,24 @@ import (
 const defaultPeriodicUiTimer = 10 * time.Second
 const maxIdLen = 80
 
+func NewUiHook(view *View) *UiHook {
+	return &UiHook{
+		view:            view,
+		periodicUiTimer: defaultPeriodicUiTimer,
+		resources:       make(map[string]uiResourceState),
+	}
+}
+
 type UiHook struct {
 	terraform.NilHook
 
-	Colorize        *colorstring.Colorize
+	view     *View
-	Ui              cli.Ui
+	viewLock sync.Mutex
-	PeriodicUiTimer time.Duration
 
-	l         sync.Mutex
+	periodicUiTimer time.Duration
-	once      sync.Once
+
-	resources map[string]uiResourceState
+	resources     map[string]uiResourceState
-	ui        cli.Ui
+	resourcesLock sync.Mutex
 }
 
 var _ terraform.Hook = (*UiHook)(nil)
@@ -63,8 +68,6 @@ const (
 )
 
 func (h *UiHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (terraform.HookAction, error) {
-	h.once.Do(h.init)
-
 	dispAddr := addr.String()
 	if gen != states.CurrentGen {
 		dispAddr = fmt.Sprintf("%s (%s)", dispAddr, gen)
@@ -89,7 +92,7 @@ func (h *UiHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation,
 	default:
 		// We don't expect any other actions in here, so anything else is a
 		// bug in the caller but we'll ignore it in order to be robust.
-		h.ui.Output(fmt.Sprintf("(Unknown action %s for %s)", action, dispAddr))
+		h.println(fmt.Sprintf("(Unknown action %s for %s)", action, dispAddr))
 		return terraform.HookActionContinue, nil
 	}
 
@@ -103,7 +106,7 @@ func (h *UiHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation,
 		idValue = ""
 	}
 
-	h.ui.Output(h.Colorize.Color(fmt.Sprintf(
+	h.println(h.view.colorize.Color(fmt.Sprintf(
 		"[reset][bold]%s: %s%s[reset]",
 		dispAddr,
 		operation,
@@ -121,9 +124,9 @@ func (h *UiHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation,
 		done:     make(chan struct{}),
 	}
 
-	h.l.Lock()
+	h.resourcesLock.Lock()
 	h.resources[key] = uiState
-	h.l.Unlock()
+	h.resourcesLock.Unlock()
 
 	// Start goroutine that shows progress
 	go h.stillApplying(uiState)
@@ -138,7 +141,7 @@ func (h *UiHook) stillApplying(state uiResourceState) {
 		case <-state.DoneCh:
 			return
 
-		case <-time.After(h.PeriodicUiTimer):
+		case <-time.After(h.periodicUiTimer):
 			// Timer up, show status
 		}
 
@@ -161,7 +164,7 @@ func (h *UiHook) stillApplying(state uiResourceState) {
 			idSuffix = fmt.Sprintf("%s=%s, ", state.IDKey, truncateId(state.IDValue, maxIdLen))
 		}
 
-		h.ui.Output(h.Colorize.Color(fmt.Sprintf(
+		h.println(h.view.colorize.Color(fmt.Sprintf(
 			"[reset][bold]%s: %s [%s%s elapsed][reset]",
 			state.DispAddr,
 			msg,
@@ -172,17 +175,16 @@ func (h *UiHook) stillApplying(state uiResourceState) {
 }
 
 func (h *UiHook) PostApply(addr addrs.AbsResourceInstance, gen states.Generation, newState cty.Value, applyerr error) (terraform.HookAction, error) {
-
 	id := addr.String()
 
-	h.l.Lock()
+	h.resourcesLock.Lock()
 	state := h.resources[id]
 	if state.DoneCh != nil {
 		close(state.DoneCh)
 	}
 
 	delete(h.resources, id)
-	h.l.Unlock()
+	h.resourcesLock.Unlock()
 
 	var stateIdSuffix string
 	if k, v := format.ObjectValueID(newState); k != "" && v != "" {
@@ -208,21 +210,17 @@ func (h *UiHook) PostApply(addr addrs.AbsResourceInstance, gen states.Generation
 		return terraform.HookActionContinue, nil
 	}
 
-	colorized := h.Colorize.Color(fmt.Sprintf(
+	colorized := h.view.colorize.Color(fmt.Sprintf(
 		"[reset][bold]%s: %s after %s%s[reset]",
 		addr, msg, time.Now().Round(time.Second).Sub(state.Start), stateIdSuffix))
 
-	h.ui.Output(colorized)
+	h.println(colorized)
 
 	return terraform.HookActionContinue, nil
 }
 
-func (h *UiHook) PreDiff(addr addrs.AbsResourceInstance, gen states.Generation, priorState, proposedNewState cty.Value) (terraform.HookAction, error) {
-	return terraform.HookActionContinue, nil
-}
-
 func (h *UiHook) PreProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string) (terraform.HookAction, error) {
-	h.ui.Output(h.Colorize.Color(fmt.Sprintf(
+	h.println(h.view.colorize.Color(fmt.Sprintf(
 		"[reset][bold]%s: Provisioning with '%s'...[reset]",
 		addr, typeName,
 	)))
@@ -231,7 +229,7 @@ func (h *UiHook) PreProvisionInstanceStep(addr addrs.AbsResourceInstance, typeNa
 
 func (h *UiHook) ProvisionOutput(addr addrs.AbsResourceInstance, typeName string, msg string) {
 	var buf bytes.Buffer
-	buf.WriteString(h.Colorize.Color("[reset]"))
+	buf.WriteString(h.view.colorize.Color("[reset]"))
 
 	prefix := fmt.Sprintf("%s (%s): ", addr, typeName)
 	s := bufio.NewScanner(strings.NewReader(msg))
@@ -243,27 +241,23 @@ func (h *UiHook) ProvisionOutput(addr addrs.AbsResourceInstance, typeName string
 		}
 	}
 
-	h.ui.Output(strings.TrimSpace(buf.String()))
+	h.println(strings.TrimSpace(buf.String()))
 }
 
 func (h *UiHook) PreRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value) (terraform.HookAction, error) {
-	h.once.Do(h.init)
-
 	var stateIdSuffix string
 	if k, v := format.ObjectValueID(priorState); k != "" && v != "" {
 		stateIdSuffix = fmt.Sprintf(" [%s=%s]", k, v)
 	}
 
-	h.ui.Output(h.Colorize.Color(fmt.Sprintf(
+	h.println(h.view.colorize.Color(fmt.Sprintf(
 		"[reset][bold]%s: Refreshing state...%s",
 		addr, stateIdSuffix)))
 	return terraform.HookActionContinue, nil
 }
 
 func (h *UiHook) PreImportState(addr addrs.AbsResourceInstance, importID string) (terraform.HookAction, error) {
-	h.once.Do(h.init)
+	h.println(h.view.colorize.Color(fmt.Sprintf(
-
-	h.ui.Output(h.Colorize.Color(fmt.Sprintf(
 		"[reset][bold]%s: Importing from ID %q...",
 		addr, importID,
 	)))
@@ -271,12 +265,10 @@ func (h *UiHook) PreImportState(addr addrs.AbsResourceInstance, importID string)
 }
 
 func (h *UiHook) PostImportState(addr addrs.AbsResourceInstance, imported []providers.ImportedResource) (terraform.HookAction, error) {
-	h.once.Do(h.init)
+	h.println(h.view.colorize.Color(fmt.Sprintf(
-
-	h.ui.Output(h.Colorize.Color(fmt.Sprintf(
 		"[reset][bold][green]%s: Import prepared!", addr)))
 	for _, s := range imported {
-		h.ui.Output(h.Colorize.Color(fmt.Sprintf(
+		h.println(h.view.colorize.Color(fmt.Sprintf(
 			"[reset][green]  Prepared %s for import",
 			s.TypeName,
 		)))
@@ -285,19 +277,11 @@ func (h *UiHook) PostImportState(addr addrs.AbsResourceInstance, imported []prov
 	return terraform.HookActionContinue, nil
 }
 
-func (h *UiHook) init() {
+// Wrap calls to the view so that concurrent calls do not interleave println.
-	if h.Colorize == nil {
+func (h *UiHook) println(s string) {
-		panic("colorize not given")
+	h.viewLock.Lock()
-	}
+	defer h.viewLock.Unlock()
-	if h.PeriodicUiTimer == 0 {
+	h.view.streams.Println(s)
-		h.PeriodicUiTimer = defaultPeriodicUiTimer
-	}
-
-	h.resources = make(map[string]uiResourceState)
-
-	// Wrap the ui so that it is safe for concurrency regardless of the
-	// underlying reader/writer that is in place.
-	h.ui = &cli.ConcurrentUi{Ui: h.Ui}
 }
 
 // scanLines is basically copied from the Go standard library except

command/views/hook_ui_test.go

@@ -1,4 +1,4 @@
-package command
+package views
 
 import (
 	"fmt"
@@ -6,28 +6,20 @@ import (
 	"testing"
 	"time"
 
-	"github.com/mitchellh/cli"
-	"github.com/mitchellh/colorstring"
 	"github.com/zclconf/go-cty/cty"
 
 	"github.com/hashicorp/terraform/addrs"
+	"github.com/hashicorp/terraform/internal/terminal"
 	"github.com/hashicorp/terraform/plans"
 	"github.com/hashicorp/terraform/states"
 	"github.com/hashicorp/terraform/terraform"
 )
 
 func TestUiHookPreApply_periodicTimer(t *testing.T) {
-	ui := cli.NewMockUi()
+	streams, done := terminal.StreamsForTesting(t)
-	h := &UiHook{
+	view := NewView(streams)
-		Colorize: &colorstring.Colorize{
+	h := NewUiHook(view)
-			Colors:  colorstring.DefaultColors,
+	h.periodicUiTimer = 1 * time.Second
-			Disable: true,
-			Reset:   true,
-		},
-		Ui:              ui,
-		PeriodicUiTimer: 1 * time.Second,
-	}
-	h.init()
 	h.resources = map[string]uiResourceState{
 		"data.aws_availability_zones.available": uiResourceState{
 			Op:    uiResourceDestroy,
@@ -75,29 +67,23 @@ data.aws_availability_zones.available: Still destroying... [id=2017-03-05 10:56:
 data.aws_availability_zones.available: Still destroying... [id=2017-03-05 10:56:59.298784526 +0000 UTC, 2s elapsed]
 data.aws_availability_zones.available: Still destroying... [id=2017-03-05 10:56:59.298784526 +0000 UTC, 3s elapsed]
 `
-	output := ui.OutputWriter.String()
+	result := done(t)
+	output := result.Stdout()
 	if output != expectedOutput {
 		t.Fatalf("Output didn't match.\nExpected: %q\nGiven: %q", expectedOutput, output)
 	}
 
 	expectedErrOutput := ""
-	errOutput := ui.ErrorWriter.String()
+	errOutput := result.Stderr()
 	if errOutput != expectedErrOutput {
 		t.Fatalf("Error output didn't match.\nExpected: %q\nGiven: %q", expectedErrOutput, errOutput)
 	}
 }
 
 func TestUiHookPreApply_destroy(t *testing.T) {
-	ui := cli.NewMockUi()
+	streams, done := terminal.StreamsForTesting(t)
-	h := &UiHook{
+	view := NewView(streams)
-		Colorize: &colorstring.Colorize{
+	h := NewUiHook(view)
-			Colors:  colorstring.DefaultColors,
-			Disable: true,
-			Reset:   true,
-		},
-		Ui: ui,
-	}
-	h.init()
 	h.resources = map[string]uiResourceState{
 		"data.aws_availability_zones.available": uiResourceState{
 			Op:    uiResourceDestroy,
@@ -138,30 +124,24 @@ func TestUiHookPreApply_destroy(t *testing.T) {
 	close(uiState.DoneCh)
 	<-uiState.done
 
+	result := done(t)
 	expectedOutput := "data.aws_availability_zones.available: Destroying... [id=2017-03-05 10:56:59.298784526 +0000 UTC]\n"
-	output := ui.OutputWriter.String()
+	output := result.Stdout()
 	if output != expectedOutput {
 		t.Fatalf("Output didn't match.\nExpected: %q\nGiven: %q", expectedOutput, output)
 	}
 
 	expectedErrOutput := ""
-	errOutput := ui.ErrorWriter.String()
+	errOutput := result.Stderr()
 	if errOutput != expectedErrOutput {
 		t.Fatalf("Error output didn't match.\nExpected: %q\nGiven: %q", expectedErrOutput, errOutput)
 	}
 }
 
 func TestUiHookPostApply_emptyState(t *testing.T) {
-	ui := cli.NewMockUi()
+	streams, done := terminal.StreamsForTesting(t)
-	h := &UiHook{
+	view := NewView(streams)
-		Colorize: &colorstring.Colorize{
+	h := NewUiHook(view)
-			Colors:  colorstring.DefaultColors,
-			Disable: true,
-			Reset:   true,
-		},
-		Ui: ui,
-	}
-	h.init()
 	h.resources = map[string]uiResourceState{
 		"data.google_compute_zones.available": uiResourceState{
 			Op:    uiResourceDestroy,
@@ -187,15 +167,16 @@ func TestUiHookPostApply_emptyState(t *testing.T) {
 	if action != terraform.HookActionContinue {
 		t.Fatalf("Expected hook to continue, given: %#v", action)
 	}
+	result := done(t)
 
 	expectedRegexp := "^data.google_compute_zones.available: Destruction complete after -?[a-z0-9µ.]+\n$"
-	output := ui.OutputWriter.String()
+	output := result.Stdout()
 	if matched, _ := regexp.MatchString(expectedRegexp, output); !matched {
 		t.Fatalf("Output didn't match regexp.\nExpected: %q\nGiven: %q", expectedRegexp, output)
 	}
 
 	expectedErrOutput := ""
-	errOutput := ui.ErrorWriter.String()
+	errOutput := result.Stderr()
 	if errOutput != expectedErrOutput {
 		t.Fatalf("Error output didn't match.\nExpected: %q\nGiven: %q", expectedErrOutput, errOutput)
 	}