From c1d9bc80331fd2bfc05214d9b869e8f7c9ee1ac0 Mon Sep 17 00:00:00 2001
From: William Yang <mscame@gmail.com>
Date: Wed, 31 May 2023 15:53:05 +0200
Subject: [PATCH] perf(emqx_mqtt_caps): direct read mqtt from zone conf

---
 apps/emqx/src/emqx_mqtt_caps.erl | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/apps/emqx/src/emqx_mqtt_caps.erl b/apps/emqx/src/emqx_mqtt_caps.erl
index 897bb93c4..bf544280f 100644
--- a/apps/emqx/src/emqx_mqtt_caps.erl
+++ b/apps/emqx/src/emqx_mqtt_caps.erl
@@ -41,8 +41,6 @@
     exclusive_subscription => boolean()
 }.
 
--define(MAX_TOPIC_LEVELS, 65535).
-
 -define(PUBCAP_KEYS, [
     max_topic_levels,
     max_qos_allowed,
@@ -154,8 +152,5 @@ get_caps(Zone) ->
 get_caps(Keys, Zone) ->
     maps:with(
         Keys,
-        maps:merge(
-            emqx_config:get([mqtt]),
-            emqx_config:get_zone_conf(Zone, [mqtt])
-        )
+        emqx_config:get_zone_conf(Zone, [mqtt])
     ).