fix

apps/iot/src/iot_app.erl

@@ -13,6 +13,9 @@ start(_StartType, _StartArgs) ->
     io:setopts([{encoding, unicode}]),
     %% 启动数据库
     mnesia:start(),
+    Tables = mnesia:system_info(tables),
+    iot_util:assert_exec(lists:member(router, [Tables]), fun() -> mnesia:wait_for_tables([router], infinity) end),
+
     %% 加速内存的回收
     erlang:system_flag(fullsweep_after, 16),
 

apps/iot/src/iot_util.erl

@@ -13,7 +13,7 @@
 -export([timestamp/0, number_format/2, current_time/0]).
 -export([step/3, chunks/2, rand_bytes/1, uuid/0]).
 -export([json_data/1, json_error/2]).
--export([queue_limited_in/3]).
+-export([queue_limited_in/3, assert_exec/2]).
 
 %% 时间，精确到毫秒
 timestamp() ->
@@ -81,3 +81,9 @@ queue_limited_in(Item, Q, Num) when is_integer(Num) ->
         false ->
             queue:in(Item, Q)
     end.
+
+-spec assert_exec(boolean(), any()) -> any().
+assert_exec(true, Fun) when is_function(Fun, 0) ->
+    {ok, Fun()};
+assert_exec(_, _) ->
+    aborted.