enter replicasets from deployments with r

Signed-off-by: Rudrakh Panigrahi <rudrakh97@gmail.com>

internal/view/dp.go

@@ -5,10 +5,10 @@ package view
 
 import (
 	"errors"
-
 	"github.com/derailed/k9s/internal/client"
 	"github.com/derailed/k9s/internal/dao"
 	"github.com/derailed/k9s/internal/ui"
+	"github.com/derailed/tcell/v2"
 	appsv1 "k8s.io/api/apps/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
@@ -47,6 +47,7 @@ func (d *Deploy) bindKeys(aa *ui.KeyActions) {
 		ui.KeyShiftR: ui.NewKeyAction("Sort Ready", d.GetTable().SortColCmd(readyCol, true), false),
 		ui.KeyShiftU: ui.NewKeyAction("Sort UpToDate", d.GetTable().SortColCmd(uptodateCol, true), false),
 		ui.KeyShiftL: ui.NewKeyAction("Sort Available", d.GetTable().SortColCmd(availCol, true), false),
+		ui.KeyR:      ui.NewKeyAction("Show Replicasets", d.replicaSetsCmd, true),
 	})
 }
 
@@ -63,6 +64,20 @@ func (d *Deploy) logOptions(prev bool) (*dao.LogOptions, error) {
 	return podLogOptions(d.App(), path, prev, dp.ObjectMeta, dp.Spec.Template.Spec), nil
 }
 
+func (d *Deploy) replicaSetsCmd(evt *tcell.EventKey) *tcell.EventKey {
+	dName := d.GetTable().GetSelectedItem()
+	if dName == "" {
+		return evt
+	}
+	dp, err := d.getInstance(dName)
+	if err != nil {
+		d.App().Flash().Err(err)
+		return nil
+	}
+	showReplicasetsFromSelector(d.App(), dName, dp.Spec.Selector)
+	return nil
+}
+
 func (d *Deploy) showPods(app *App, model ui.Tabular, gvr client.GVR, fqn string) {
 	dp, err := d.getInstance(fqn)
 	if err != nil {
@@ -73,6 +88,16 @@ func (d *Deploy) showPods(app *App, model ui.Tabular, gvr client.GVR, fqn string
 	showPodsFromSelector(app, fqn, dp.Spec.Selector)
 }
 
+func (d *Deploy) showReplicasets(app *App, model ui.Tabular, gvr client.GVR, fqn string) {
+	dp, err := d.getInstance(fqn)
+	if err != nil {
+		app.Flash().Err(err)
+		return
+	}
+
+	showReplicasetsFromSelector(app, fqn, dp.Spec.Selector)
+}
+
 func (d *Deploy) getInstance(fqn string) (*appsv1.Deployment, error) {
 	var dp dao.Deployment
 	dp.Init(d.App().factory, d.GVR())
@@ -92,3 +117,13 @@ func showPodsFromSelector(app *App, path string, sel *metav1.LabelSelector) {
 
 	showPods(app, path, l.String(), "")
 }
+
+func showReplicasetsFromSelector(app *App, path string, sel *metav1.LabelSelector) {
+	l, err := metav1.LabelSelectorAsSelector(sel)
+	if err != nil {
+		app.Flash().Err(err)
+		return
+	}
+
+	showReplicasets(app, path, l.String(), "")
+}

internal/view/helpers.go

@@ -163,6 +163,27 @@ func podCtx(_ *App, path, fieldSel string) ContextFunc {
 	}
 }
 
+func showReplicasets(app *App, path, labelSel, fieldSel string) {
+	v := NewReplicaSet(client.NewGVR("apps/v1/replicasets"))
+	v.SetContextFn(replicasetCtx(app, path, fieldSel))
+	v.SetLabelFilter(cmd.ToLabels(labelSel))
+
+	ns, _ := client.Namespaced(path)
+	if err := app.Config.SetActiveNamespace(ns); err != nil {
+		log.Error().Err(err).Msg("Config NS set failed!")
+	}
+	if err := app.inject(v, false); err != nil {
+		app.Flash().Err(err)
+	}
+}
+
+func replicasetCtx(_ *App, path, fieldSel string) ContextFunc {
+	return func(ctx context.Context) context.Context {
+		ctx = context.WithValue(ctx, internal.KeyPath, path)
+		return context.WithValue(ctx, internal.KeyFields, fieldSel)
+	}
+}
+
 func extractApp(ctx context.Context) (*App, error) {
 	app, ok := ctx.Value(internal.KeyApp).(*App)
 	if !ok {