diff --git a/agent/agentcontainers/api.go b/agent/agentcontainers/api.go
index 26ebafd660fb1..bdf7b79bc1775 100644
--- a/agent/agentcontainers/api.go
+++ b/agent/agentcontainers/api.go
@@ -422,12 +422,17 @@ func (api *API) updaterLoop() {
// advancing the clock.
ticker := api.clock.TickerFunc(api.ctx, api.updateInterval, func() error {
done := make(chan error, 1)
- defer close(done)
-
+ var sent bool
+ defer func() {
+ if !sent {
+ close(done)
+ }
+ }()
select {
case <-api.ctx.Done():
return api.ctx.Err()
case api.updateTrigger <- done:
+ sent = true
err := <-done
if err != nil {
if errors.Is(err, context.Canceled) {
@@ -456,6 +461,7 @@ func (api *API) updaterLoop() {
// Note that although we pass api.ctx here, updateContainers
// has an internal timeout to prevent long blocking calls.
done <- api.updateContainers(api.ctx)
+ close(done)
}
}
}
@@ -800,12 +806,19 @@ func (api *API) RefreshContainers(ctx context.Context) (err error) {
}()
done := make(chan error, 1)
+ var sent bool
+ defer func() {
+ if !sent {
+ close(done)
+ }
+ }()
select {
case <-api.ctx.Done():
return xerrors.Errorf("API closed: %w", api.ctx.Err())
case <-ctx.Done():
return ctx.Err()
case api.updateTrigger <- done:
+ sent = true
select {
case <-api.ctx.Done():
return xerrors.Errorf("API closed: %w", api.ctx.Err())
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