verbose logging in checkpoint manager

consensus/polybft/checkpoint_manager.go

@@ -327,6 +327,7 @@ func (c *checkpointManager) PostBlock(req *PostBlockRequest) error {
 	if err != nil {
 		return fmt.Errorf("could not get last processed block for exit events. Error: %w", err)
 	}
+	c.logger.Info("[checkPointManager] read last block", "block", lastBlock)
 
 	if lastBlock == 0 {
 		// if we are running in a forked context here we need to make sure that we update the last block
@@ -342,6 +343,8 @@ func (c *checkpointManager) PostBlock(req *PostBlockRequest) error {
 		return err
 	}
 
+	c.logger.Info("[checkPointManager] got exit events", "count", len(exitEvents))
+
 	sort.Slice(exitEvents, func(i, j int) bool {
 		// keep events in sequential order
 		return exitEvents[i].ID.Cmp(exitEvents[j].ID) < 0
@@ -351,6 +354,8 @@ func (c *checkpointManager) PostBlock(req *PostBlockRequest) error {
 		return err
 	}
 
+	c.logger.Info("[checkPointManager] written exit events")
+
 	if err := c.state.CheckpointStore.updateLastSaved(block); err != nil {
 		return err
 	}