fix: some status updates are discarded by the status updater (envoypr…

…oxy#4337)

Signed-off-by: Huabing Zhao <[email protected]>
(cherry picked from commit 14830c7)
Signed-off-by: Guy Daich <[email protected]>

internal/provider/kubernetes/status_updater.go

@@ -56,15 +56,13 @@ func (m MutatorFunc) Mutate(old client.Object) client.Object {
 type UpdateHandler struct {
 	log           logr.Logger
 	client        client.Client
-	sendUpdates   chan struct{}
 	updateChannel chan Update
 }
 
 func NewUpdateHandler(log logr.Logger, client client.Client) *UpdateHandler {
 	return &UpdateHandler{
 		log:           log,
 		client:        client,
-		sendUpdates:   make(chan struct{}),
 		updateChannel: make(chan Update, 100),
 	}
 }
@@ -129,9 +127,6 @@ func (u *UpdateHandler) Start(ctx context.Context) error {
 	u.log.Info("started status update handler")
 	defer u.log.Info("stopped status update handler")
 
-	// Enable Updaters to start sending updates to this handler.
-	close(u.sendUpdates)
-
 	for {
 		select {
 		case <-ctx.Done():
@@ -148,7 +143,6 @@ func (u *UpdateHandler) Start(ctx context.Context) error {
 // Writer retrieves the interface that should be used to write to the UpdateHandler.
 func (u *UpdateHandler) Writer() Updater {
 	return &UpdateWriter{
-		enabled:       u.sendUpdates,
 		updateChannel: u.updateChannel,
 	}
 }
@@ -160,18 +154,13 @@ type Updater interface {
 
 // UpdateWriter takes status updates and sends these to the UpdateHandler via a channel.
 type UpdateWriter struct {
-	enabled       <-chan struct{}
 	updateChannel chan<- Update
 }
 
 // Send sends the given Update off to the update channel for writing by the UpdateHandler.
 func (u *UpdateWriter) Send(update Update) {
 	// Non-blocking receive to see if we should pass along update.
-	select {
-	case <-u.enabled:
-		u.updateChannel <- update
-	default:
-	}
+	u.updateChannel <- update
 }
 
 // isStatusEqual checks if two objects have equivalent status.