From 4d7521da143375af4ba6789e669867cbf69dbfd7 Mon Sep 17 00:00:00 2001
From: Lauren Helm <lauren_helm@rapid7.com>
Date: Wed, 10 Mar 2021 16:52:56 -0500
Subject: [PATCH] prevents drain from failing when object is empty

---
 lib/elasticsearch/drain/node.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/elasticsearch/drain/node.rb b/lib/elasticsearch/drain/node.rb
index dc453ed..f6a6533 100644
--- a/lib/elasticsearch/drain/node.rb
+++ b/lib/elasticsearch/drain/node.rb
@@ -97,7 +97,10 @@ def address(str)
       end
 
       def in_recovery?
-        recovery = client.cat.recovery(format: 'json', v: true).first.values
+        recovery = client.cat.recovery(format: 'json', v: true)
+        if recovery.first != nil
+          recovery = recovery.first.values
+        end
         [hostname, name].any? { |a| recovery.include?(a) }
       end