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fix: avoid deleting peers on graceful close #14165

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Merged
merged 14 commits into from
Aug 14, 2024
Merged

fix: avoid deleting peers on graceful close #14165

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e2f3c31
fix: avoid deleting peers on graceful close
sreya Aug 4, 2024
82c6dce
lint
sreya Aug 5, 2024
aeca9b3
Merge branch 'main' into jon/pgc
sreya Aug 5, 2024
b5c6d96
set all peers to lost on shutdown
sreya Aug 11, 2024
b1f6aea
add heartbeat failure test
sreya Aug 11, 2024
1c905c7
delete stale comments
sreya Aug 11, 2024
fadde34
lint
sreya Aug 11, 2024
159b509
extra checks
sreya Aug 12, 2024
04472e3
pr comments
sreya Aug 12, 2024
eb52aa2
wait for workers to exit
sreya Aug 13, 2024
3173e44
simplify ctx management
sreya Aug 13, 2024
4754554
delete peers once
sreya Aug 14, 2024
0913392
instantiate channel
sreya Aug 14, 2024
8a65a2f
wrong ctx
sreya Aug 14, 2024
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delete peers once
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@sreya
sreya committed Aug 14, 2024
commit 4754554056d414ddc43cbcbf24e3b690a8cf0005
33 changes: 22 additions & 11 deletions enterprise/tailnet/pgcoord.go
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Original file line number Diff line number Diff line change
Expand Up @@ -475,6 +475,7 @@ type binder struct {
workQ *workQ[bKey]

workerWG sync.WaitGroup
close chan struct{}
}

func newBinder(ctx context.Context,
Expand Down Expand Up @@ -503,6 +504,26 @@ func newBinder(ctx context.Context,
go b.worker()
}
}()

go func() {
defer close(b.close)
<-ctx.Done()
b.logger.Debug(b.ctx, "binder exiting, waiting for workers")

b.workerWG.Wait()

b.logger.Debug(b.ctx, "updating peers to lost")

ctx, cancel := context.WithTimeout(ctx, time.Second*15)
defer cancel()
err := b.store.UpdateTailnetPeerStatusByCoordinator(ctx, database.UpdateTailnetPeerStatusByCoordinatorParams{
CoordinatorID: b.coordinatorID,
Status: database.TailnetStatusLost,
})
if err != nil {
b.logger.Error(b.ctx, "update peer status to lost", slog.Error(err))
}
}()
return b
}

Expand Down Expand Up @@ -623,17 +644,7 @@ func (b *binder) retrieveBinding(bk bKey) binding {
}

func (b *binder) wait() {
b.workerWG.Wait()

b.logger.Debug(b.ctx, "binder exiting, updating peers to lost", slog.Error(b.ctx.Err()))

err := b.store.UpdateTailnetPeerStatusByCoordinator(context.Background(), database.UpdateTailnetPeerStatusByCoordinatorParams{
CoordinatorID: b.coordinatorID,
Status: database.TailnetStatusLost,
})
if err != nil {
b.logger.Error(b.ctx, "update peer status to lost", slog.Error(err))
}
<-b.close
}

// mapper tracks data sent to a peer, and sends updates based on changes read from the database.
Expand Down
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