From 8f614f86c3ea3154557c81dbf36b89b4da8e0f21 Mon Sep 17 00:00:00 2001
From: Gilbert Wong <gilbertwong96@icloud.com>
Date: Sat, 30 Mar 2019 09:59:30 +0800
Subject: [PATCH] Add create_mnesia_dir fun

---
 src/emqx_app.erl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/emqx_app.erl b/src/emqx_app.erl
index 9648600c5..53d8f97fd 100644
--- a/src/emqx_app.erl
+++ b/src/emqx_app.erl
@@ -27,7 +27,7 @@
 %%--------------------------------------------------------------------
 
 start(_Type, _Args) ->
-
+    create_mnesia_dir("data/mnesia"),
     emqx_gen_config:generate_config("etc/emqx.conf", "etc/plugins", "data/configs", "releases/3.1/schema"),
     %% We'd like to configure the primary logger level here, rather than set the
     %%   kernel config `logger_level` before starting the erlang vm.
@@ -77,3 +77,7 @@ start_autocluster() ->
     ekka:callback(reboot,  fun emqx:reboot/0),
     ekka:autocluster(?APP).
 
+create_mnesia_dir(Dir) ->
+    MnesiaDir = filename:join(Dir, node()),
+    filelib:ensure_dir(MnesiaDir),
+    application:set_env(mnesia, dir, MnesiaDir).