[GitHub] [apisix] zaunist commented on a change in pull request #6509: change: backport server-info to 2.10

[GitBox <gi...@apache.org>]

zaunist commented on a change in pull request #6509:
URL: https://github.com/apache/apisix/pull/6509#discussion_r820183194



##########
File path: apisix/core/etcd.lua
##########
@@ -360,4 +361,19 @@ function _M.server_version()
 end
 
 
+function _M.keepalive(id)
+    local etcd_cli, _, err = new()
+    if not etcd_cli then
+        return nil, err
+    end
+
+    local res, err = etcd_cli:keepalive(id)
+    if not res then
+        return nil, err
+    end
+
+    return res, nil

Review comment:
       If I don't return nil, how can I be sure there is no err?




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