From 696d4a4e584c4b4bcbe59b0667d60936a09b7b23 Mon Sep 17 00:00:00 2001
From: Shawn <506895667@qq.com>
Date: Mon, 31 May 2021 12:14:25 +0800
Subject: [PATCH] fix(emqx_resource): some dialyzer complaints

---
 apps/emqx_resource/rebar.config                   | 2 ++
 apps/emqx_resource/src/emqx_resource_instance.erl | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/apps/emqx_resource/rebar.config b/apps/emqx_resource/rebar.config
index 089985cec..148af92bd 100644
--- a/apps/emqx_resource/rebar.config
+++ b/apps/emqx_resource/rebar.config
@@ -7,6 +7,8 @@
 
 {extra_src_dirs, ["examples"]}.
 
+%% try to override the dialyzer 'race_conditions' defined in the top-level dir,
+%% but it doesn't work
 {dialyzer, [{warnings, [unmatched_returns, error_handling]}
            ]}.
 
diff --git a/apps/emqx_resource/src/emqx_resource_instance.erl b/apps/emqx_resource/src/emqx_resource_instance.erl
index a78a2e15a..ca5e4829e 100644
--- a/apps/emqx_resource/src/emqx_resource_instance.erl
+++ b/apps/emqx_resource/src/emqx_resource_instance.erl
@@ -175,6 +175,8 @@ code_change(_OldVsn, State, _Extra) ->
 
 %%------------------------------------------------------------------------------
 
+%% suppress the race condition check, as these functions are protected in gproc workers
+-dialyzer({nowarn_function, [do_update/4, do_create/3, do_restart/1, do_stop/1, do_health_check/1]}).
 do_update(InstId, ResourceType, NewConfig, Params) ->
     case lookup(InstId) of
         {ok, #{mod := ResourceType, state := ResourceState, config := OldConfig}} ->