feat(spec): Task 5 — OrderedWaitStrategy, --wait=ordered, --readiness-timeout

Adds OrderedWaitStrategy ("ordered") to the WaitStrategy enum in pkg/kube.
Updates --wait flag to accept "ordered" and flags.go validation.
Adds --readiness-timeout flag (default 1m) to install and upgrade commands.
Adds ReadinessTimeout field to Install and Upgrade action structs.
Validates ReadinessTimeout must not exceed Timeout at run time.

pkg/action/install.go

@@ -100,6 +100,10 @@ type Install struct {
 	Devel            bool
 	DependencyUpdate bool
 	Timeout          time.Duration
+	// ReadinessTimeout is the per-batch timeout when --wait=ordered is used.
+	// Each batch waits at most this long for resources to become ready.
+	// Must not exceed Timeout. Defaults to 1 minute when zero.
+	ReadinessTimeout time.Duration
 	Namespace        string
 	ReleaseName      string
 	GenerateName     bool
@@ -290,6 +294,10 @@ func (i *Install) RunWithContext(ctx context.Context, ch ci.Charter, vals map[st
 		return nil, fmt.Errorf("release name check failed: %w", err)
 	}
 
+	if i.ReadinessTimeout > 0 && i.Timeout > 0 && i.ReadinessTimeout > i.Timeout {
+		return nil, fmt.Errorf("--readiness-timeout (%s) must not exceed --timeout (%s)", i.ReadinessTimeout, i.Timeout)
+	}
+
 	if err := chartutil.ProcessDependencies(chrt, vals); err != nil {
 		i.cfg.Logger().Error("chart dependencies processing failed", slog.Any("error", err))
 		return nil, fmt.Errorf("chart dependencies processing failed: %w", err)

pkg/action/upgrade.go

@@ -70,6 +70,10 @@ type Upgrade struct {
 	SkipCRDs bool
 	// Timeout is the timeout for this operation
 	Timeout time.Duration
+	// ReadinessTimeout is the per-batch timeout when --wait=ordered is used.
+	// Each batch waits at most this long for resources to become ready.
+	// Must not exceed Timeout. Defaults to 1 minute when zero.
+	ReadinessTimeout time.Duration
 	// WaitStrategy determines what type of waiting should be done
 	WaitStrategy kube.WaitStrategy
 	// WaitOptions are additional options for waiting on resources
@@ -187,6 +191,10 @@ func (u *Upgrade) RunWithContext(ctx context.Context, name string, ch chart.Char
 		return nil, fmt.Errorf("release name is invalid: %s", name)
 	}
 
+	if u.ReadinessTimeout > 0 && u.Timeout > 0 && u.ReadinessTimeout > u.Timeout {
+		return nil, fmt.Errorf("--readiness-timeout (%s) must not exceed --timeout (%s)", u.ReadinessTimeout, u.Timeout)
+	}
+
 	u.cfg.Logger().Debug("preparing upgrade", "name", name)
 	currentRelease, upgradedRelease, serverSideApply, err := u.prepareUpgrade(name, chrt, vals)
 	if err != nil {

pkg/cmd/flags.go

@@ -59,7 +59,7 @@ func AddWaitFlag(cmd *cobra.Command, wait *kube.WaitStrategy) {
 	cmd.Flags().Var(
 		newWaitValue(kube.HookOnlyStrategy, wait),
 		"wait",
-		"wait until resources are ready (up to --timeout). Use '--wait' alone for 'watcher' strategy, or specify one of: 'watcher', 'hookOnly', 'legacy'. Default when flag is omitted: 'hookOnly'.",
+		"wait until resources are ready (up to --timeout). Use '--wait' alone for 'watcher' strategy, or specify one of: 'watcher', 'hookOnly', 'legacy', 'ordered'. Default when flag is omitted: 'hookOnly'.",
 	)
 	cmd.Flags().Lookup("wait").NoOptDefVal = string(kube.StatusWatcherStrategy)
 }
@@ -80,7 +80,7 @@ func (ws *waitValue) String() string {
 
 func (ws *waitValue) Set(s string) error {
 	switch s {
-	case string(kube.StatusWatcherStrategy), string(kube.LegacyStrategy), string(kube.HookOnlyStrategy):
+	case string(kube.StatusWatcherStrategy), string(kube.LegacyStrategy), string(kube.HookOnlyStrategy), string(kube.OrderedWaitStrategy):
 		*ws = waitValue(s)
 		return nil
 	case "true":
@@ -92,7 +92,7 @@ func (ws *waitValue) Set(s string) error {
 		*ws = waitValue(kube.HookOnlyStrategy)
 		return nil
 	default:
-		return fmt.Errorf("invalid wait input %q. Valid inputs are %s, %s, and %s", s, kube.StatusWatcherStrategy, kube.HookOnlyStrategy, kube.LegacyStrategy)
+		return fmt.Errorf("invalid wait input %q. Valid inputs are %s, %s, %s, and %s", s, kube.StatusWatcherStrategy, kube.HookOnlyStrategy, kube.LegacyStrategy, kube.OrderedWaitStrategy)
 	}
 }
 

pkg/cmd/flags_test.go

@@ -25,6 +25,7 @@ import (
 
 	"helm.sh/helm/v4/pkg/action"
 	chart "helm.sh/helm/v4/pkg/chart/v2"
+	"helm.sh/helm/v4/pkg/kube"
 	"helm.sh/helm/v4/pkg/release/common"
 	release "helm.sh/helm/v4/pkg/release/v1"
 )
@@ -99,6 +100,27 @@ func outputFlagCompletionTest(t *testing.T, cmdName string) {
 	runTestCmd(t, tests)
 }
 
+func TestWaitValueOrdered(t *testing.T) {
+	// --wait=ordered should be accepted and set the strategy correctly.
+	var ws kube.WaitStrategy
+	wv := newWaitValue(kube.HookOnlyStrategy, &ws)
+
+	if err := wv.Set("ordered"); err != nil {
+		t.Fatalf("expected --wait=ordered to be accepted, got error: %v", err)
+	}
+	if ws != kube.OrderedWaitStrategy {
+		t.Errorf("expected OrderedWaitStrategy, got %q", ws)
+	}
+}
+
+func TestWaitValueInvalid(t *testing.T) {
+	var ws kube.WaitStrategy
+	wv := newWaitValue(kube.HookOnlyStrategy, &ws)
+	if err := wv.Set("invalid"); err == nil {
+		t.Error("expected error for invalid wait strategy, got nil")
+	}
+}
+
 func TestPostRendererFlagSetOnce(t *testing.T) {
 	cfg := action.Configuration{}
 	client := action.NewInstall(&cfg)

pkg/cmd/install.go

@@ -212,6 +212,7 @@ func addInstallFlags(cmd *cobra.Command, f *pflag.FlagSet, client *action.Instal
 	addValueOptionsFlags(f, valueOpts)
 	addChartPathOptionsFlags(f, &client.ChartPathOptions)
 	AddWaitFlag(cmd, &client.WaitStrategy)
+	f.DurationVar(&client.ReadinessTimeout, "readiness-timeout", time.Minute, "per-batch timeout when --wait=ordered is used; each resource batch must become ready within this duration (must not exceed --timeout)")
 	cmd.MarkFlagsMutuallyExclusive("force-replace", "force-conflicts")
 	cmd.MarkFlagsMutuallyExclusive("force", "force-conflicts")
 

pkg/cmd/upgrade.go

@@ -305,6 +305,7 @@ func newUpgradeCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 	bindOutputFlag(cmd, &outfmt)
 	bindPostRenderFlag(cmd, &client.PostRenderer, settings)
 	AddWaitFlag(cmd, &client.WaitStrategy)
+	f.DurationVar(&client.ReadinessTimeout, "readiness-timeout", time.Minute, "per-batch timeout when --wait=ordered is used; each resource batch must become ready within this duration (must not exceed --timeout)")
 	cmd.MarkFlagsMutuallyExclusive("force-replace", "force-conflicts")
 	cmd.MarkFlagsMutuallyExclusive("force", "force-conflicts")
 

pkg/kube/client.go

@@ -117,6 +117,13 @@ const (
 
 	// HookOnlyStrategy: wait only for hook Pods/Jobs to complete; does not wait for general chart resources.
 	HookOnlyStrategy WaitStrategy = "hookOnly"
+
+	// OrderedWaitStrategy: deploy resources in DAG-ordered batches, waiting for each batch to become ready
+	// before proceeding to the next. Subchart and resource-group sequencing is driven by
+	// helm.sh/depends-on/subcharts, helm.sh/resource-group, and helm.sh/depends-on/resource-groups annotations.
+	// Custom readiness conditions via helm.sh/readiness-success and helm.sh/readiness-failure are evaluated
+	// per-resource; otherwise kstatus is used.
+	OrderedWaitStrategy WaitStrategy = "ordered"
 )
 
 type FieldValidationDirective string
@@ -200,10 +207,14 @@ func (c *Client) GetWaiterWithOptions(strategy WaitStrategy, opts ...WaitOption)
 			return nil, err
 		}
 		return &hookOnlyWaiter{sw: sw}, nil
+	case OrderedWaitStrategy:
+		// Sequencing logic lives in the action layer; at the kube level, ordered
+		// strategy uses the status watcher for per-batch readiness checks.
+		return c.newStatusWatcher(opts...)
 	case "":
-		return nil, errors.New("wait strategy not set. Choose one of: " + string(StatusWatcherStrategy) + ", " + string(HookOnlyStrategy) + ", " + string(LegacyStrategy))
+		return nil, errors.New("wait strategy not set. Choose one of: " + string(StatusWatcherStrategy) + ", " + string(HookOnlyStrategy) + ", " + string(LegacyStrategy) + ", " + string(OrderedWaitStrategy))
 	default:
-		return nil, errors.New("unknown wait strategy (s" + string(strategy) + "). Valid values are: " + string(StatusWatcherStrategy) + ", " + string(HookOnlyStrategy) + ", " + string(LegacyStrategy))
+		return nil, errors.New("unknown wait strategy (" + string(strategy) + "). Valid values are: " + string(StatusWatcherStrategy) + ", " + string(HookOnlyStrategy) + ", " + string(LegacyStrategy) + ", " + string(OrderedWaitStrategy))
 	}
 }