fix locking issue when shelling out #171

internal/views/pod.go

@@ -173,18 +173,22 @@ func (v *podView) shellCmd(evt *tcell.EventKey) *tcell.EventKey {
 }
 
 func (v *podView) shellIn(path, co string) {
-	ns, po := namespaced(path)
-	args := make([]string, 0, 12)
-	args = append(args, "exec", "-it")
-	args = append(args, "--context", v.app.config.K9s.CurrentContext)
-	args = append(args, "-n", ns)
-	args = append(args, po)
-	if len(co) != 0 {
-		args = append(args, "-c", co)
+	v.suspend()
+	{
+		ns, po := namespaced(path)
+		args := make([]string, 0, 12)
+		args = append(args, "exec", "-it")
+		args = append(args, "--context", v.app.config.K9s.CurrentContext)
+		args = append(args, "-n", ns)
+		args = append(args, po)
+		if len(co) != 0 {
+			args = append(args, "-c", co)
+		}
+		args = append(args, "--", "sh")
+		log.Debug().Msgf("Shell args %v", args)
+		runK(true, v.app, args...)
 	}
-	args = append(args, "--", "sh")
-	log.Debug().Msgf("Shell args %v", args)
-	runK(true, v.app, args...)
+	v.resume()
 }
 
 func (v *podView) extraActions(aa keyActions) {

internal/views/resource.go

@@ -6,6 +6,7 @@ import (
 	"path"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/derailed/k9s/internal/config"
@@ -43,6 +44,8 @@ type (
 		decorateFn     decorateFn
 		colorerFn      colorerFn
 		actions        keyActions
+		mx             sync.Mutex
+		suspended      bool
 	}
 )
 
@@ -78,6 +81,15 @@ func (v *resourceView) init(ctx context.Context, ns string) {
 	}
 	v.getTV().setColorer(colorer)
 
+	go v.updater(ctx)
+	v.refresh()
+	if tv, ok := v.CurrentPage().Item.(*tableView); ok {
+		tv.Select(1, 0)
+		v.selChanged(1, 0)
+	}
+}
+
+func (v *resourceView) updater(ctx context.Context) {
 	go func(ctx context.Context) {
 		for {
 			select {
@@ -85,17 +97,37 @@ func (v *resourceView) init(ctx context.Context, ns string) {
 				log.Debug().Msgf("%s watcher canceled!", v.title)
 				return
 			case <-time.After(time.Duration(v.app.config.K9s.RefreshRate) * time.Second):
+				var suspended bool
+				v.mx.Lock()
+				{
+					suspended = v.suspended
+				}
+				v.mx.Unlock()
+				if suspended == true {
+					continue
+				}
 				v.app.QueueUpdate(func() {
 					v.refresh()
 				})
 			}
 		}
 	}(ctx)
-	v.refresh()
-	if tv, ok := v.CurrentPage().Item.(*tableView); ok {
-		tv.Select(1, 0)
-		v.selChanged(1, 0)
+}
+
+func (v *resourceView) suspend() {
+	v.mx.Lock()
+	{
+		v.suspended = true
 	}
+	v.mx.Unlock()
+}
+
+func (v *resourceView) resume() {
+	v.mx.Lock()
+	{
+		v.suspended = false
+	}
+	v.mx.Unlock()
 }
 
 func (v *resourceView) setExtraActionsFn(f actionsFn) {