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cli: Migrate refresh to command views

This commit is contained in:
Alisdair McDiarmid 2021-02-22 11:38:39 -05:00
parent 56b756cfd9
commit 50d58b592a
6 changed files with 577 additions and 147 deletions
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61
command/arguments/refresh.go Normal file
View File

@ -0,0 +1,61 @@
package arguments
import (
"github.com/hashicorp/terraform/tfdiags"
)
// Refresh represents the command-line arguments for the apply command.
type Refresh struct {
// State, Operation, and Vars are the common extended flags
State *State
Operation *Operation
Vars *Vars
// InputEnabled is used to disable interactive input for unspecified
// variable and backend config values. Default is true.
InputEnabled bool
// ViewType specifies which output format to use
ViewType ViewType
}
// ParseRefresh processes CLI arguments, returning a Refresh value and errors.
// If errors are encountered, a Refresh value is still returned representing
// the best effort interpretation of the arguments.
func ParseRefresh(args []string) (*Refresh, tfdiags.Diagnostics) {
var diags tfdiags.Diagnostics
refresh := &Refresh{
State: &State{},
Operation: &Operation{},
Vars: &Vars{},
}
cmdFlags := extendedFlagSet("refresh", refresh.State, refresh.Operation, refresh.Vars)
cmdFlags.BoolVar(&refresh.InputEnabled, "input", true, "input")
if err := cmdFlags.Parse(args); err != nil {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to parse command-line flags",
err.Error(),
))
}
args = cmdFlags.Args()
if len(args) > 0 {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Too many command line arguments",
"Expected at most one positional argument.",
))
}
diags = diags.Append(refresh.Operation.Parse())
switch {
default:
refresh.ViewType = ViewHuman
}
return refresh, diags
}

173
command/arguments/refresh_test.go Normal file
View File

@ -0,0 +1,173 @@
package arguments
import (
"strings"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/hashicorp/terraform/addrs"
)
func TestParseRefresh_basicValid(t *testing.T) {
testCases := map[string]struct {
args []string
want *Refresh
}{
"defaults": {
nil,
&Refresh{
InputEnabled: true,
ViewType: ViewHuman,
},
},
"input=flase": {
[]string{"-input=false"},
&Refresh{
InputEnabled: false,
ViewType: ViewHuman,
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
got, diags := ParseRefresh(tc.args)
if len(diags) > 0 {
t.Fatalf("unexpected diags: %v", diags)
}
// Ignore the extended arguments for simplicity
got.State = nil
got.Operation = nil
got.Vars = nil
if *got != *tc.want {
t.Fatalf("unexpected result\n got: %#v\nwant: %#v", got, tc.want)
}
})
}
}
func TestParseRefresh_invalid(t *testing.T) {
got, diags := ParseRefresh([]string{"-frob"})
if len(diags) == 0 {
t.Fatal("expected diags but got none")
}
if got, want := diags.Err().Error(), "flag provided but not defined"; !strings.Contains(got, want) {
t.Fatalf("wrong diags\n got: %s\nwant: %s", got, want)
}
if got.ViewType != ViewHuman {
t.Fatalf("wrong view type, got %#v, want %#v", got.ViewType, ViewHuman)
}
}
func TestParseRefresh_tooManyArguments(t *testing.T) {
got, diags := ParseRefresh([]string{"saved.tfplan"})
if len(diags) == 0 {
t.Fatal("expected diags but got none")
}
if got, want := diags.Err().Error(), "Too many command line arguments"; !strings.Contains(got, want) {
t.Fatalf("wrong diags\n got: %s\nwant: %s", got, want)
}
if got.ViewType != ViewHuman {
t.Fatalf("wrong view type, got %#v, want %#v", got.ViewType, ViewHuman)
}
}
func TestParseRefresh_targets(t *testing.T) {
foobarbaz, _ := addrs.ParseTargetStr("foo_bar.baz")
boop, _ := addrs.ParseTargetStr("module.boop")
testCases := map[string]struct {
args []string
want []addrs.Targetable
wantErr string
}{
"no targets by default": {
args: nil,
want: nil,
},
"one target": {
args: []string{"-target=foo_bar.baz"},
want: []addrs.Targetable{foobarbaz.Subject},
},
"two targets": {
args: []string{"-target=foo_bar.baz", "-target", "module.boop"},
want: []addrs.Targetable{foobarbaz.Subject, boop.Subject},
},
"invalid traversal": {
args: []string{"-target=foo."},
want: nil,
wantErr: "Dot must be followed by attribute name",
},
"invalid target": {
args: []string{"-target=data[0].foo"},
want: nil,
wantErr: "A data source name is required",
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
got, diags := ParseRefresh(tc.args)
if len(diags) > 0 {
if tc.wantErr == "" {
t.Fatalf("unexpected diags: %v", diags)
} else if got := diags.Err().Error(); !strings.Contains(got, tc.wantErr) {
t.Fatalf("wrong diags\n got: %s\nwant: %s", got, tc.wantErr)
}
}
if !cmp.Equal(got.Operation.Targets, tc.want) {
t.Fatalf("unexpected result\n%s", cmp.Diff(got.Operation.Targets, tc.want))
}
})
}
}
func TestParseRefresh_vars(t *testing.T) {
testCases := map[string]struct {
args []string
want []FlagNameValue
}{
"no var flags by default": {
args: nil,
want: nil,
},
"one var": {
args: []string{"-var", "foo=bar"},
want: []FlagNameValue{
{Name: "-var", Value: "foo=bar"},
},
},
"one var-file": {
args: []string{"-var-file", "cool.tfvars"},
want: []FlagNameValue{
{Name: "-var-file", Value: "cool.tfvars"},
},
},
"ordering preserved": {
args: []string{
"-var", "foo=bar",
"-var-file", "cool.tfvars",
"-var", "boop=beep",
},
want: []FlagNameValue{
{Name: "-var", Value: "foo=bar"},
{Name: "-var-file", Value: "cool.tfvars"},
{Name: "-var", Value: "boop=beep"},
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
got, diags := ParseRefresh(tc.args)
if len(diags) > 0 {
t.Fatalf("unexpected diags: %v", diags)
}
if vars := got.Vars.All(); !cmp.Equal(vars, tc.want) {
t.Fatalf("unexpected result\n%s", cmp.Diff(vars, tc.want))
}
if got, want := got.Vars.Empty(), len(tc.want) == 0; got != want {
t.Fatalf("expected Empty() to return %t, but was %t", want, got)
}
})
}
}

198
command/refresh.go
View File

@ -7,7 +7,6 @@ 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"
)
@ -17,107 +16,164 @@ type RefreshCommand struct {
Meta
}
func (c *RefreshCommand) Run(args []string) int {
args = c.Meta.process(args)
cmdFlags := c.Meta.extendedFlagSet("refresh")
cmdFlags.StringVar(&c.Meta.statePath, "state", "", "path")
cmdFlags.IntVar(&c.Meta.parallelism, "parallelism", DefaultParallelism, "parallelism")
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 {
c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
return 1
}
func (c *RefreshCommand) Run(rawArgs []string) int {
// Parse and apply global view arguments
common, rawArgs := arguments.ParseView(rawArgs)
c.View.Configure(common)
// Parse and validate flags
args, diags := arguments.ParseRefresh(rawArgs)
// Instantiate the view, even if there are flag errors, so that we render
// diagnostics according to the desired view
var view views.Refresh
view = views.NewRefresh(args.ViewType, c.RunningInAutomation, c.View)
diags := c.parseTargetFlags()
if diags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
configPath, err := ModulePath(cmdFlags.Args())
if err != nil {
c.Ui.Error(err.Error())
view.Diagnostics(diags)
view.HelpPrompt("refresh")
return 1
}
// Check for user-supplied plugin path
var err error
if c.pluginPath, err = c.loadPluginPath(); err != nil {
c.Ui.Error(fmt.Sprintf("Error loading plugin path: %s", err))
diags = diags.Append(err)
view.Diagnostics(diags)
return 1
}
backendConfig, configDiags := c.loadBackendConfig(configPath)
diags = diags.Append(configDiags)
if configDiags.HasErrors() {
c.showDiagnostics(diags)
// FIXME: the -input flag value is needed to initialize the backend and the
// operation, but there is no clear path to pass this value down, so we
// continue to mutate the Meta object state for now.
c.Meta.input = args.InputEnabled
// FIXME: the -parallelism flag is used to control the concurrency of
// Terraform operations. At the moment, this value is used both to
// initialize the backend via the ContextOpts field inside CLIOpts, and to
// set a largely unused field on the Operation request. Again, there is no
// clear path to pass this value down, so we continue to mutate the Meta
// object state for now.
c.Meta.parallelism = args.Operation.Parallelism
// Prepare the backend with the backend-specific arguments
be, beDiags := c.PrepareBackend(args.State)
diags = diags.Append(beDiags)
if diags.HasErrors() {
view.Diagnostics(diags)
return 1
}
// Load the backend
b, backendDiags := c.Backend(&BackendOpts{
Config: backendConfig,
})
diags = diags.Append(backendDiags)
if backendDiags.HasErrors() {
c.showDiagnostics(diags)
// Build the operation request
opReq, opDiags := c.OperationRequest(be, view, args.Operation)
diags = diags.Append(opDiags)
if diags.HasErrors() {
view.Diagnostics(diags)
return 1
}
// Collect variable value and add them to the operation request
diags = diags.Append(c.GatherVariables(opReq, args.Vars))
if diags.HasErrors() {
view.Diagnostics(diags)
return 1
}
// Before we delegate to the backend, we'll print any warning diagnostics
// we've accumulated here, since the backend will start fresh with its own
// diagnostics.
c.showDiagnostics(diags)
view.Diagnostics(diags)
diags = nil
// Build the operation
opReq := c.Operation(b)
opReq.ConfigDir = configPath
opReq.Hooks = []terraform.Hook{c.uiHook()}
opReq.ShowDiagnostics = c.showDiagnostics
opReq.Type = backend.OperationTypeRefresh
opReq.View = views.NewOperation(arguments.ViewHuman, c.RunningInAutomation, c.View)
opReq.ConfigLoader, err = c.initConfigLoader()
// Perform the operation
op, err := c.RunOperation(be, opReq)
if err != nil {
c.showDiagnostics(err)
diags = diags.Append(err)
view.Diagnostics(diags)
return 1
}
{
var moreDiags tfdiags.Diagnostics
opReq.Variables, moreDiags = c.collectVariableValues()
diags = diags.Append(moreDiags)
if moreDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
}
op, err := c.RunOperation(b, opReq)
if err != nil {
c.showDiagnostics(err)
return 1
}
if op.Result != backend.OperationSuccess {
return op.Result.ExitStatus()
}
if op.State != nil {
outputValues := op.State.RootModule().OutputValues
if len(outputValues) > 0 {
c.Ui.Output(c.Colorize().Color("[reset][bold][green]\nOutputs:\n\n"))
view := views.NewOutput(arguments.ViewHuman, c.View)
view.Output("", outputValues)
}
view.Outputs(op.State.RootModule().OutputValues)
}
return op.Result.ExitStatus()
}
func (c *RefreshCommand) PrepareBackend(args *arguments.State) (backend.Enhanced, tfdiags.Diagnostics) {
// FIXME: we need to apply the state arguments to the meta object here
// because they are later used when initializing the backend. Carving a
// path to pass these arguments to the functions that need them is
// difficult but would make their use easier to understand.
c.Meta.applyStateArguments(args)
backendConfig, diags := c.loadBackendConfig(".")
if diags.HasErrors() {
return nil, diags
}
// Load the backend
be, beDiags := c.Backend(&BackendOpts{
Config: backendConfig,
})
diags = diags.Append(beDiags)
if beDiags.HasErrors() {
return nil, diags
}
return be, diags
}
func (c *RefreshCommand) OperationRequest(be backend.Enhanced, view views.Refresh, args *arguments.Operation,
) (*backend.Operation, tfdiags.Diagnostics) {
var diags tfdiags.Diagnostics
// Build the operation
opReq := c.Operation(be)
opReq.ConfigDir = "."
opReq.Hooks = view.Hooks()
opReq.Targets = args.Targets
opReq.Type = backend.OperationTypeRefresh
opReq.View = view.Operation()
// FIXME: this shim is needed until the remote backend is migrated to views
opReq.ShowDiagnostics = func(vals ...interface{}) {
var diags tfdiags.Diagnostics
diags = diags.Append(vals...)
view.Diagnostics(diags)
}
var err error
opReq.ConfigLoader, err = c.initConfigLoader()
if err != nil {
diags = diags.Append(fmt.Errorf("Failed to initialize config loader: %s", err))
return nil, diags
}
return opReq, diags
}
func (c *RefreshCommand) GatherVariables(opReq *backend.Operation, args *arguments.Vars) tfdiags.Diagnostics {
var diags tfdiags.Diagnostics
// FIXME the arguments package currently trivially gathers variable related
// arguments in a heterogenous slice, in order to minimize the number of
// code paths gathering variables during the transition to this structure.
// Once all commands that gather variables have been converted to this
// structure, we could move the variable gathering code to the arguments
// package directly, removing this shim layer.
varArgs := args.All()
items := make([]rawFlag, len(varArgs))
for i := range varArgs {
items[i].Name = varArgs[i].Name
items[i].Value = varArgs[i].Value
}
c.Meta.variableArgs = rawFlags{items: &items}
opReq.Variables, diags = c.collectVariableValues()
return diags
}
func (c *RefreshCommand) Help() string {
helpText := `
Usage: terraform refresh [options]

154
command/refresh_test.go
View File

@ -37,12 +37,10 @@ func TestRefresh(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -58,8 +56,10 @@ func TestRefresh(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ReadResourceCalled {
@ -92,12 +92,10 @@ func TestRefresh_empty(t *testing.T) {
defer testChdir(t, td)()
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -110,8 +108,10 @@ func TestRefresh_empty(t *testing.T) {
}
args := []string{}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if p.ReadResourceCalled {
@ -136,12 +136,10 @@ func TestRefresh_lockedState(t *testing.T) {
defer unlock()
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -158,13 +156,15 @@ func TestRefresh_lockedState(t *testing.T) {
"-state", statePath,
}
if code := c.Run(args); code == 0 {
code := c.Run(args)
output := done(t)
if code == 0 {
t.Fatal("expected error")
}
output := ui.ErrorWriter.String()
if !strings.Contains(output, "lock") {
t.Fatal("command output does not look like a lock error:", output)
got := output.Stderr()
if !strings.Contains(got, "lock") {
t.Fatal("command output does not look like a lock error:", got)
}
}
@ -182,12 +182,10 @@ func TestRefresh_cwd(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -203,8 +201,10 @@ func TestRefresh_cwd(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ReadResourceCalled {
@ -262,12 +262,10 @@ func TestRefresh_defaultState(t *testing.T) {
defer os.Chdir(cwd)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -283,8 +281,10 @@ func TestRefresh_defaultState(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ReadResourceCalled {
@ -332,12 +332,10 @@ func TestRefresh_outPath(t *testing.T) {
os.Remove(outPath)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -354,8 +352,10 @@ func TestRefresh_outPath(t *testing.T) {
"-state", statePath,
"-state-out", outPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
newState := testStateRead(t, statePath)
@ -393,12 +393,10 @@ func TestRefresh_var(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -408,8 +406,10 @@ func TestRefresh_var(t *testing.T) {
"-var", "foo=bar",
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ConfigureProviderCalled {
@ -431,12 +431,10 @@ func TestRefresh_varFile(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -451,8 +449,10 @@ func TestRefresh_varFile(t *testing.T) {
"-var-file", varFilePath,
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ConfigureProviderCalled {
@ -474,12 +474,10 @@ func TestRefresh_varFileDefault(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -493,8 +491,10 @@ func TestRefresh_varFileDefault(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
if !p.ConfigureProviderCalled {
@ -523,7 +523,7 @@ func TestRefresh_varsUnset(t *testing.T) {
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
@ -547,8 +547,10 @@ func TestRefresh_varsUnset(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
}
@ -587,12 +589,10 @@ func TestRefresh_backup(t *testing.T) {
os.Remove(backupPath)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -610,8 +610,10 @@ func TestRefresh_backup(t *testing.T) {
"-state-out", outPath,
"-backup", backupPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
newState := testStateRead(t, statePath)
@ -658,12 +660,10 @@ func TestRefresh_disableBackup(t *testing.T) {
os.Remove(outPath)
p := testProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -681,8 +681,10 @@ func TestRefresh_disableBackup(t *testing.T) {
"-state-out", outPath,
"-backup", "-",
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
newState := testStateRead(t, statePath)
@ -725,12 +727,10 @@ func TestRefresh_displaysOutputs(t *testing.T) {
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -750,13 +750,15 @@ func TestRefresh_displaysOutputs(t *testing.T) {
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
// Test that outputs were displayed
outputValue := "foo.example.com"
actual := done(t).Stdout()
actual := output.Stdout()
if !strings.Contains(actual, outputValue) {
t.Fatalf("Expected:\n%s\n\nTo include: %q", actual, outputValue)
}
@ -790,12 +792,10 @@ func TestRefresh_targeted(t *testing.T) {
}
}
ui := new(cli.MockUi)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
},
}
@ -804,11 +804,13 @@ func TestRefresh_targeted(t *testing.T) {
"-target", "test_instance.foo",
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 0 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
got := done(t).Stdout()
got := output.Stdout()
if want := "test_instance.foo: Refreshing"; !strings.Contains(got, want) {
t.Fatalf("expected output to contain %q, got:\n%s", want, got)
}
@ -830,11 +832,9 @@ func TestRefresh_targetFlagsDiags(t *testing.T) {
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
view, _ := testView(t)
view, done := testView(t)
c := &RefreshCommand{
Meta: Meta{
Ui: ui,
View: view,
},
}
@ -842,11 +842,13 @@ func TestRefresh_targetFlagsDiags(t *testing.T) {
args := []string{
"-target", target,
}
if code := c.Run(args); code != 1 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
code := c.Run(args)
output := done(t)
if code != 1 {
t.Fatalf("bad: %d\n\n%s", code, output.Stderr())
}
got := ui.ErrorWriter.String()
got := output.Stderr()
if !strings.Contains(got, target) {
t.Fatalf("bad error output, want %q, got:\n%s", target, got)
}

65
command/views/refresh.go Normal file
View File

@ -0,0 +1,65 @@
package views
import (
"fmt"
"github.com/hashicorp/terraform/command/arguments"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/terraform"
"github.com/hashicorp/terraform/tfdiags"
)
// The Refresh view is used for the refresh command.
type Refresh interface {
Outputs(outputValues map[string]*states.OutputValue)
Operation() Operation
Hooks() []terraform.Hook
Diagnostics(diags tfdiags.Diagnostics)
HelpPrompt(command string)
}
// NewRefresh returns an initialized Refresh implementation for the given ViewType.
func NewRefresh(vt arguments.ViewType, runningInAutomation bool, view *View) Refresh {
switch vt {
case arguments.ViewHuman:
return &RefreshHuman{
View: *view,
inAutomation: runningInAutomation,
countHook: &countHook{},
}
default:
panic(fmt.Sprintf("unknown view type %v", vt))
}
}
// The RefreshHuman implementation renders human-readable text logs, suitable for
// a scrolling terminal.
type RefreshHuman struct {
View
inAutomation bool
countHook *countHook
}
var _ Refresh = (*RefreshHuman)(nil)
func (v *RefreshHuman) Outputs(outputValues map[string]*states.OutputValue) {
if len(outputValues) > 0 {
v.streams.Print(v.colorize.Color("[reset][bold][green]\nOutputs:\n\n"))
NewOutput(arguments.ViewHuman, &v.View).Output("", outputValues)
}
}
func (v *RefreshHuman) Operation() Operation {
return NewOperation(arguments.ViewHuman, v.inAutomation, &v.View)
}
func (v *RefreshHuman) Hooks() []terraform.Hook {
return []terraform.Hook{
v.countHook,
NewUiHook(&v.View),
}
}

73
command/views/refresh_test.go Normal file
View File

@ -0,0 +1,73 @@
package views
import (
"strings"
"testing"
"github.com/hashicorp/terraform/command/arguments"
"github.com/hashicorp/terraform/internal/terminal"
"github.com/hashicorp/terraform/states"
"github.com/zclconf/go-cty/cty"
)
// Ensure that the correct view type and in-automation settings propagate to the
// Operation view.
func TestRefreshHuman_operation(t *testing.T) {
streams, done := terminal.StreamsForTesting(t)
defer done(t)
v := NewRefresh(arguments.ViewHuman, true, NewView(streams)).Operation()
if hv, ok := v.(*OperationHuman); !ok {
t.Fatalf("unexpected return type %t", v)
} else if hv.inAutomation != true {
t.Fatalf("unexpected inAutomation value on Operation view")
}
}
// Verify that Hooks includes a UI hook
func TestRefreshHuman_hooks(t *testing.T) {
streams, done := terminal.StreamsForTesting(t)
defer done(t)
v := NewRefresh(arguments.ViewHuman, true, NewView(streams))
hooks := v.Hooks()
var uiHook *UiHook
for _, hook := range hooks {
if ch, ok := hook.(*UiHook); ok {
uiHook = ch
}
}
if uiHook == nil {
t.Fatalf("expected Hooks to include a UiHook: %#v", hooks)
}
}
// Basic test coverage of Outputs, since most of its functionality is tested
// elsewhere.
func TestRefreshHuman_outputs(t *testing.T) {
streams, done := terminal.StreamsForTesting(t)
v := NewRefresh(arguments.ViewHuman, false, NewView(streams))
v.Outputs(map[string]*states.OutputValue{
"foo": {Value: cty.StringVal("secret")},
})
got := done(t).Stdout()
for _, want := range []string{"Outputs:", `foo = "secret"`} {
if !strings.Contains(got, want) {
t.Errorf("wrong result\ngot: %q\nwant: %q", got, want)
}
}
}
// Outputs should do nothing if there are no outputs to render.
func TestRefreshHuman_outputsEmpty(t *testing.T) {
streams, done := terminal.StreamsForTesting(t)
v := NewRefresh(arguments.ViewHuman, false, NewView(streams))
v.Outputs(map[string]*states.OutputValue{})
got := done(t).Stdout()
if got != "" {
t.Errorf("output should be empty, but got: %q", got)
}
}