From 72c71f6a81de2c5e80c14b0d8543f589555a1eaa Mon Sep 17 00:00:00 2001
From: Andrew Davis <1709934+Savid@users.noreply.github.com>
Date: Thu, 24 Aug 2023 11:47:12 +1000
Subject: [PATCH] fix(sentry): capture finalized checkpoint events

---
 pkg/sentry/sentry.go | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/pkg/sentry/sentry.go b/pkg/sentry/sentry.go
index 4760cb5c..9a3ff25b 100644
--- a/pkg/sentry/sentry.go
+++ b/pkg/sentry/sentry.go
@@ -329,6 +329,35 @@ func (s *Sentry) Start(ctx context.Context) error {
 			return s.handleNewDecoratedEvent(ctx, decoratedEvent)
 		})
 
+		s.beacon.Node().OnFinalizedCheckpoint(ctx, func(ctx context.Context, finalizedCheckpoint *eth2v1.FinalizedCheckpointEvent) error {
+			s.log.WithField("finalized_checkpoint", finalizedCheckpoint).Debug("Finalized checkpoint")
+
+			now := time.Now().Add(s.clockDrift)
+
+			meta, err := s.createNewClientMeta(ctx)
+			if err != nil {
+				return err
+			}
+
+			event := v1.NewEventsFinalizedCheckpoint(s.log, finalizedCheckpoint, now, s.beacon, s.duplicateCache.BeaconETHV1EventsFinalizedCheckpoint, meta)
+
+			ignore, err := event.ShouldIgnore(ctx)
+			if err != nil {
+				return err
+			}
+
+			if ignore {
+				return nil
+			}
+
+			decoratedEvent, err := event.Decorate(ctx)
+			if err != nil {
+				return err
+			}
+
+			return s.handleNewDecoratedEvent(ctx, decoratedEvent)
+		})
+
 		if err := s.startForkChoiceSchedule(ctx); err != nil {
 			return err
 		}