From ef1b5915321c6337d7562be3b7271fe046188e9f Mon Sep 17 00:00:00 2001
From: Turtle <deng@emqx.io>
Date: Fri, 30 Jul 2021 12:10:32 +0800
Subject: [PATCH] chore: Dynamically get the app that starts by default

---
 apps/emqx/src/emqx.erl | 21 +++++----------------
 rebar.config.erl       |  6 ++++++
 2 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/apps/emqx/src/emqx.erl b/apps/emqx/src/emqx.erl
index d969012da..3530f0dfb 100644
--- a/apps/emqx/src/emqx.erl
+++ b/apps/emqx/src/emqx.erl
@@ -221,13 +221,8 @@ shutdown(Reason) ->
 reboot() ->
     lists:foreach(fun application:start/1 , default_started_applications()).
 
--ifdef(EMQX_ENTERPRISE).
-default_started_applications() ->
-    [gproc, esockd, ranch, cowboy, ekka, quicer, emqx].
--else.
 default_started_applications() ->
     [gproc, esockd, ranch, cowboy, ekka, quicer, emqx] ++ emqx_feature().
--endif.
 
 %%--------------------------------------------------------------------
 %% Internal functions
@@ -239,15 +234,9 @@ reload_config(ConfFile) ->
                       [application:set_env(App, Par, Val) || {Par, Val} <- Vals]
                   end, Conf).
 
-
+-ifndef(EMQX_DEP_APPS).
+emqx_feature() -> [].
+-else.
 emqx_feature() ->
-    [ emqx_resource
-    , emqx_authn
-    , emqx_authz
-    , emqx_gateway
-    , emqx_data_bridge
-    , emqx_rule_engine
-    , emqx_bridge_mqtt
-    , emqx_modules
-    , emqx_management
-    , emqx_retainer].
+    ?EMQX_DEP_APPS.
+-endif.
diff --git a/rebar.config.erl b/rebar.config.erl
index f0c246409..5eca3094a 100644
--- a/rebar.config.erl
+++ b/rebar.config.erl
@@ -133,10 +133,16 @@ test_deps() ->
     ].
 
 common_compile_opts() ->
+    AppNames = list_dir("apps") ++
+               case is_enterprise() of
+                    true -> list_dir("lib-ee");
+                    false -> []
+               end,
     [ debug_info % alwyas include debug_info
     , {compile_info, [{emqx_vsn, get_vsn()}]}
     , {d, snk_kind, msg}
     ] ++
+    [{d, 'EMQX_DEP_APPS', AppNames -- [emqx]}] ++
     [{d, 'EMQX_ENTERPRISE'} || is_enterprise()] ++
     [{d, 'EMQX_EXT_SCHEMAS', emqx_ext_schemas()}] ++
     [{d, 'EMQX_BENCHMARK'} || os:getenv("EMQX_BENCHMARK") =:= "1" ].