From cead8c905688f31c01a4433a245d586483d43768 Mon Sep 17 00:00:00 2001
From: EMQ-YangM <yangm@emqx.io>
Date: Wed, 30 Mar 2022 09:30:51 +0800
Subject: [PATCH] fix: use masp:get/3 to avoid crash after match failure

---
 apps/emqx_rule_engine/src/emqx_rule_events.erl | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/apps/emqx_rule_engine/src/emqx_rule_events.erl b/apps/emqx_rule_engine/src/emqx_rule_events.erl
index fb7649e97..f3044ff74 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_events.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_events.erl
@@ -172,18 +172,18 @@ eventmsg_connected(_ClientInfo = #{
                     is_bridge := IsBridge,
                     mountpoint := Mountpoint
                    },
-                   _ConnInfo = #{
+                   ConnInfo = #{
                     peername := PeerName,
                     sockname := SockName,
                     clean_start := CleanStart,
                     proto_name := ProtoName,
                     proto_ver := ProtoVer,
-                    keepalive := Keepalive,
                     connected_at := ConnectedAt,
-                    conn_props := ConnProps,
-                    receive_maximum := RcvMax,
-                    expiry_interval := ExpiryInterval
+                    receive_maximum := RcvMax
                    }) ->
+    Keepalive = maps:get(keepalive, ConnInfo, 0),
+    ConnProps = maps:get(conn_props, ConnInfo, #{}),
+    ExpiryInterval = maps:get(expiry_interval, ConnInfo, 0),
     with_basic_columns('client.connected',
         #{clientid => ClientId,
           username => Username,