From 29c76d16d79eff27fc504e8dc8ca6189e2970fc3 Mon Sep 17 00:00:00 2001
From: Shawn <506895667@qq.com>
Date: Thu, 29 Sep 2022 13:40:01 +0800
Subject: [PATCH] fix: reset rule metrics crash if it has not initialized

---
 apps/emqx_rule_engine/src/emqx_rule_metrics.erl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/apps/emqx_rule_engine/src/emqx_rule_metrics.erl b/apps/emqx_rule_engine/src/emqx_rule_metrics.erl
index 624032056..e8a77e0db 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_metrics.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_metrics.erl
@@ -328,6 +328,8 @@ handle_call({create_rule_metrics, Id}, _From,
                                     _ -> RuleSpeeds#{Id => #rule_speed{}}
                                 end}};
 
+handle_call({reset_speeds, _Id}, _From, State = #state{rule_speeds = undefined}) ->
+    {reply, ok, State};
 handle_call({reset_speeds, Id}, _From, State = #state{rule_speeds = RuleSpeedMap}) ->
     {reply, ok, State#state{rule_speeds = maps:put(Id, #rule_speed{}, RuleSpeedMap)}};