From 09194aa6133c4a7344dad81d343b9c15c4d30238 Mon Sep 17 00:00:00 2001
From: whyrusleeping <why@ipfs.io>
Date: Wed, 2 Sep 2020 15:57:42 -0700
Subject: [PATCH] print better error when losing connection

---
 cmd/lotus-shed/mempool-stats.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmd/lotus-shed/mempool-stats.go b/cmd/lotus-shed/mempool-stats.go
index b21948065..4c87b5b5a 100644
--- a/cmd/lotus-shed/mempool-stats.go
+++ b/cmd/lotus-shed/mempool-stats.go
@@ -106,7 +106,10 @@ var mpoolStatsCmd = &cli.Command{
 		tick := time.Tick(time.Second)
 		for {
 			select {
-			case u := <-updates:
+			case u, ok := <-updates:
+				if !ok {
+					return fmt.Errorf("connection with lotus node broke")
+				}
 				switch u.Type {
 				case lapi.MpoolAdd:
 					tracker[u.Message.Cid()] = &msgInfo{