From fff54fa23c0412b59e79158f4cef2dc445e7ae94 Mon Sep 17 00:00:00 2001
From: Giovanni Petrantoni <7008900+sinkingsugar@users.noreply.github.com>
Date: Tue, 9 Feb 2021 18:42:59 +0900
Subject: [PATCH] add more diagnostics when gossip publish fails

---
 libp2p/protocols/pubsub/gossipsub.nim | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libp2p/protocols/pubsub/gossipsub.nim b/libp2p/protocols/pubsub/gossipsub.nim
index 17fd3ccb9..b609c9a85 100644
--- a/libp2p/protocols/pubsub/gossipsub.nim
+++ b/libp2p/protocols/pubsub/gossipsub.nim
@@ -520,7 +520,10 @@ method publish*(g: GossipSub,
     g.lastFanoutPubSub[topic] = Moment.fromNow(g.parameters.fanoutTTL)
 
   if peers.len == 0:
-    notice "No peers for topic, skipping publish"
+    let topicPeers = g.gossipsub.getOrDefault(topic).toSeq()
+    notice "No peers for topic, skipping publish",  peersOnTopic = topicPeers.len,
+                                                    connectedPeers = topicPeers.filterIt(it.connected).len,
+                                                    topic
     # skipping topic as our metrics finds that heavy
     libp2p_gossipsub_failed_publish.inc()
     return 0