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-rw-r--r--lib/kernel/src/application.erl20
-rw-r--r--lib/kernel/src/application_controller.erl48
2 files changed, 48 insertions, 20 deletions
diff --git a/lib/kernel/src/application.erl b/lib/kernel/src/application.erl
index 4e8ba1b78a..b797d7d362 100644
--- a/lib/kernel/src/application.erl
+++ b/lib/kernel/src/application.erl
@@ -285,16 +285,18 @@ info() ->
set_env(Application, Key, Val) ->
application_controller:set_env(Application, Key, Val).
--spec set_env(Application, Par, Val, Timeout) -> 'ok' when
+-spec set_env(Application, Par, Val, Opts) -> 'ok' when
Application :: atom(),
Par :: atom(),
Val :: term(),
- Timeout :: timeout().
+ Opts :: [{timeout, timeout()} | {persistent, boolean()}].
set_env(Application, Key, Val, infinity) ->
- application_controller:set_env(Application, Key, Val, infinity);
+ set_env(Application, Key, Val, [{timeout, infinity}]);
set_env(Application, Key, Val, Timeout) when is_integer(Timeout), Timeout>=0 ->
- application_controller:set_env(Application, Key, Val, Timeout).
+ set_env(Application, Key, Val, [{timeout, Timeout}]);
+set_env(Application, Key, Val, Opts) when is_list(Opts) ->
+ application_controller:set_env(Application, Key, Val, Opts).
-spec unset_env(Application, Par) -> 'ok' when
Application :: atom(),
@@ -303,15 +305,17 @@ set_env(Application, Key, Val, Timeout) when is_integer(Timeout), Timeout>=0 ->
unset_env(Application, Key) ->
application_controller:unset_env(Application, Key).
--spec unset_env(Application, Par, Timeout) -> 'ok' when
+-spec unset_env(Application, Par, Opts) -> 'ok' when
Application :: atom(),
Par :: atom(),
- Timeout :: timeout().
+ Opts :: [{timeout, timeout()} | {persistent, boolean()}].
unset_env(Application, Key, infinity) ->
- application_controller:unset_env(Application, Key, infinity);
+ unset_env(Application, Key, [{timeout, infinity}]);
unset_env(Application, Key, Timeout) when is_integer(Timeout), Timeout>=0 ->
- application_controller:unset_env(Application, Key, Timeout).
+ unset_env(Application, Key, [{timeout, Timeout}]);
+unset_env(Application, Key, Opts) when is_list(Opts) ->
+ application_controller:unset_env(Application, Key, Opts).
-spec get_env(Par) -> 'undefined' | {'ok', Val} when
Par :: atom(),
diff --git a/lib/kernel/src/application_controller.erl b/lib/kernel/src/application_controller.erl
index 9ed2c7a7d9..9e3c746f6e 100644
--- a/lib/kernel/src/application_controller.erl
+++ b/lib/kernel/src/application_controller.erl
@@ -461,14 +461,16 @@ permit_application(ApplName, Flag) ->
set_env(AppName, Key, Val) ->
- gen_server:call(?AC, {set_env, AppName, Key, Val}).
-set_env(AppName, Key, Val, Timeout) ->
- gen_server:call(?AC, {set_env, AppName, Key, Val}, Timeout).
+ gen_server:call(?AC, {set_env, AppName, Key, Val, []}).
+set_env(AppName, Key, Val, Opts) ->
+ Timeout = proplists:get_value(timeout, Opts, 5000),
+ gen_server:call(?AC, {set_env, AppName, Key, Val, Opts}, Timeout).
unset_env(AppName, Key) ->
- gen_server:call(?AC, {unset_env, AppName, Key}).
-unset_env(AppName, Key, Timeout) ->
- gen_server:call(?AC, {unset_env, AppName, Key}, Timeout).
+ gen_server:call(?AC, {unset_env, AppName, Key, []}).
+unset_env(AppName, Key, Opts) ->
+ Timeout = proplists:get_value(timeout, Opts, 5000),
+ gen_server:call(?AC, {unset_env, AppName, Key, Opts}, Timeout).
%%%-----------------------------------------------------------------
%%% call-back functions from gen_server
@@ -609,8 +611,8 @@ check_para([Else | _ParaList], AppName) ->
| {'change_application_data', _, _}
| {'permit_application', atom() | {'application',atom(),_},_}
| {'start_application', _, _}
- | {'unset_env', _, _}
- | {'set_env', _, _, _}.
+ | {'unset_env', _, _, _}
+ | {'set_env', _, _, _, _}.
-spec handle_call(calls(), {pid(), term()}, state()) ->
{'noreply', state()} | {'reply', term(), state()}.
@@ -858,13 +860,25 @@ handle_call(which_applications, _From, S) ->
end, S#state.running),
{reply, Reply, S};
-handle_call({set_env, AppName, Key, Val}, _From, S) ->
+handle_call({set_env, AppName, Key, Val, Opts}, _From, S) ->
ets:insert(ac_tab, {{env, AppName, Key}, Val}),
- {reply, ok, S};
+ case proplists:get_value(persistent, Opts, false) of
+ true ->
+ Fun = fun(Env) -> lists:keystore(Key, 1, Env, {Key, Val}) end,
+ {reply, ok, S#state{conf_data = change_app_env(S#state.conf_data, AppName, Fun)}};
+ false ->
+ {reply, ok, S}
+ end;
-handle_call({unset_env, AppName, Key}, _From, S) ->
+handle_call({unset_env, AppName, Key, Opts}, _From, S) ->
ets:delete(ac_tab, {env, AppName, Key}),
- {reply, ok, S};
+ case proplists:get_value(persistent, Opts, false) of
+ true ->
+ Fun = fun(Env) -> lists:keydelete(Key, 1, Env) end,
+ {reply, ok, S#state{conf_data = change_app_env(S#state.conf_data, AppName, Fun)}};
+ false ->
+ {reply, ok, S}
+ end;
handle_call({control_application, AppName}, {Pid, _Tag}, S) ->
Control = S#state.control,
@@ -1640,6 +1654,16 @@ merge_env([{App, AppEnv1} | T], Env2, Res) ->
merge_env([], Env2, Res) ->
Env2 ++ Res.
+%% Changes the environment for the given application
+%% If there is no application, an empty one is created
+change_app_env(Env, App, Fun) ->
+ case get_env_key(App, Env) of
+ {value, AppEnv, RestEnv} ->
+ [{App, Fun(AppEnv)} | RestEnv];
+ _ ->
+ [{App, Fun([])} | Env]
+ end.
+
%% Merges envs for an application. Env2 overrides Env1
merge_app_env(Env1, Env2) ->
merge_app_env(Env1, Env2, []).