fix(autossl) log the errors on the list certificates request (#110)

Co-authored-by: Nizar Malangadan <[email protected]>

lib/resty/acme/autossl.lua

@@ -314,7 +314,11 @@ function AUTOSSL.check_renew(premature)
     return
   end
 
-  local keys = AUTOSSL.storage:list(domain_cache_key_prefix)
+  local keys, err = AUTOSSL.storage:list(domain_cache_key_prefix)
+  if err then
+    log(ngx_ERR, "failed to get the list of certificates from storage, error: ", err)
+    return
+  end
   for _, key in ipairs(keys) do
     local serialized, err = AUTOSSL.storage:get(key)
     if err or not serialized then

lib/resty/acme/storage/consul.lua

@@ -152,7 +152,7 @@ function _M:list(prefix)
       end
     end
   end
-  return ret
+  return ret, nil
 end
 
 return _M

lib/resty/acme/storage/etcd.lua

@@ -88,7 +88,7 @@ function _M:list(prefix)
       end
     end
   end
-  return ret
+  return ret, nil
 end
 
 return _M

lib/resty/acme/storage/file.lua

@@ -149,7 +149,7 @@ function _M:list(prefix)
     end
 ::nextfile::
   end
-  return files
+  return files, nil
 end
 
 return _M

lib/resty/acme/storage/shm.lua

@@ -51,7 +51,7 @@ function _M:list(prefix)
       end
     end
   end
-  return keys
+  return keys, nil
 end
 
 return _M

lib/resty/acme/storage/vault.lua

@@ -268,7 +268,7 @@ function _M:list(prefix)
       end
     end
   end
-  return ret
+  return ret, nil
 end
 
 return _M