From 57fdd87a2400da05d9464703a036bbbd596dcfac Mon Sep 17 00:00:00 2001
From: Zahary Karadjov <zahary@gmail.com>
Date: Thu, 10 Dec 2020 01:45:49 +0200
Subject: [PATCH] Log Eth1 request failures more precisely

---
 beacon_chain/eth1_monitor.nim | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/beacon_chain/eth1_monitor.nim b/beacon_chain/eth1_monitor.nim
index 593632fd3..a575c3f5d 100644
--- a/beacon_chain/eth1_monitor.nim
+++ b/beacon_chain/eth1_monitor.nim
@@ -273,8 +273,9 @@ template awaitWithRetries[T](lazyFutExpr: Future[T],
 
     inc attempts
     if attempts >= retries:
-      raise newException(DataProviderFailure,
-        reqType & " failed " & $retries & " times")
+      var errorMsg = reqType & " failed " & $retries & " times"
+      if f.failed: errorMsg &= ". Last error: " & f.error.msg
+      raise newException(DataProviderFailure, errorMsg)
 
     await sleepAsync(chronos.milliseconds(retryDelayMs))
     retryDelayMs *= 2