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0351-Don-t-save-included_applications-as-applic...
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File 0351-Don-t-save-included_applications-as-application-envi.patch of Package erlang
From a178e9545725455d064efd3f039c5052918544d5 Mon Sep 17 00:00:00 2001 From: Siri Hansen <siri@erlang.org> Date: Fri, 4 May 2018 15:01:54 +0200 Subject: [PATCH] Don't save included_applications as application environment variable During application load, the included_applications key from the .app file would earlier be duplicated as an application environment variable. Due to this, its value could be retrieved in any of the following ways: application:get_key(App,included_applications). application:get_env(App,included_applications). It would also be included in the resulting list from the following calls: application:get_all_key(App). application:get_all_env(App). This commit removes the duplication, and included_applications will no longer be returned by application:get_env/2 or application:get_all_env/1. The reason for this change is mainly to avoid confusion, but also to avoid the potensial inconsistency which would occur if the environment variable was changed during runtime by calls to application:put_env(App,included_applications,NewInclApps). --- lib/kernel/src/application_controller.erl | 12 +++--------- lib/kernel/test/application_SUITE.erl | 12 ++++-------- 2 files changed, 7 insertions(+), 17 deletions(-) diff --git a/lib/kernel/src/application_controller.erl b/lib/kernel/src/application_controller.erl index b9cb722575..ff5df667b5 100644 --- a/lib/kernel/src/application_controller.erl +++ b/lib/kernel/src/application_controller.erl @@ -1272,9 +1272,7 @@ load(S, {ApplData, ApplEnv, IncApps, Descr, Id, Vsn, Apps}) -> NewEnv = merge_app_env(ApplEnv, ConfEnv), CmdLineEnv = get_cmd_env(Name), NewEnv2 = merge_app_env(NewEnv, CmdLineEnv), - NewEnv3 = keyreplaceadd(included_applications, 1, NewEnv2, - {included_applications, IncApps}), - add_env(Name, NewEnv3), + add_env(Name, NewEnv2), Appl = #appl{name = Name, descr = Descr, id = Id, vsn = Vsn, appl_data = ApplData, inc_apps = IncApps, apps = Apps}, ets:insert(ac_tab, {{loaded, Name}, Appl}), @@ -1292,7 +1290,7 @@ load(S, {ApplData, ApplEnv, IncApps, Descr, Id, Vsn, Apps}) -> {ok, NewS}. unload(AppName, S) -> - {ok, IncApps} = get_env(AppName, included_applications), + {ok, IncApps} = get_key(AppName, included_applications), del_env(AppName), ets:delete(ac_tab, {loaded, AppName}), foldl(fun(App, S1) -> @@ -1583,13 +1581,9 @@ do_change_appl({ok, {ApplData, Env, IncApps, Descr, Id, Vsn, Apps}}, CmdLineEnv = get_cmd_env(AppName), NewEnv2 = merge_app_env(NewEnv1, CmdLineEnv), - %% included_apps is made into an env parameter as well - NewEnv3 = keyreplaceadd(included_applications, 1, NewEnv2, - {included_applications, IncApps}), - %% Update ets table with new application env del_env(AppName), - add_env(AppName, NewEnv3), + add_env(AppName, NewEnv2), OldAppl#appl{appl_data=ApplData, descr=Descr, diff --git a/lib/kernel/test/application_SUITE.erl b/lib/kernel/test/application_SUITE.erl index c00fb44c46..988f26280f 100644 --- a/lib/kernel/test/application_SUITE.erl +++ b/lib/kernel/test/application_SUITE.erl @@ -1603,8 +1603,7 @@ get_key(Conf) when is_list(Conf) -> {ok, [{init, [kalle]}, {takeover, []}, {go, [sune]}]} = rpc:call(Cp1, application, get_key, [appinc, start_phases]), {ok, Env} = rpc:call(Cp1, application, get_key, [appinc ,env]), - [{included_applications,[appinc1,appinc2]}, - {own2,val2},{own_env1,value1}] = lists:sort(Env), + [{own2,val2},{own_env1,value1}] = lists:sort(Env), {ok, []} = rpc:call(Cp1, application, get_key, [appinc, modules]), {ok, {application_starter, [ch_sup, {appinc, 41, 43}] }} = rpc:call(Cp1, application, get_key, [appinc, mod]), @@ -1625,8 +1624,7 @@ get_key(Conf) when is_list(Conf) -> {mod, {application_starter, [ch_sup, {appinc, 41, 43}] }}, {start_phases, [{init, [kalle]}, {takeover, []}, {go, [sune]}]}]} = rpc:call(Cp1, application, get_all_key, [appinc]), - [{included_applications,[appinc1,appinc2]}, - {own2,val2},{own_env1,value1}] = lists:sort(Env), + [{own2,val2},{own_env1,value1}] = lists:sort(Env), {ok, "Test of new app file, including appnew"} = gen_server:call({global, {ch,41}}, {get_pid_key, description}), @@ -1643,8 +1641,7 @@ get_key(Conf) when is_list(Conf) -> {ok, [{init, [kalle]}, {takeover, []}, {go, [sune]}]} = gen_server:call({global, {ch,41}}, {get_pid_key, start_phases}), {ok, Env} = gen_server:call({global, {ch,41}}, {get_pid_key, env}), - [{included_applications,[appinc1,appinc2]}, - {own2,val2},{own_env1,value1}] = lists:sort(Env), + [{own2,val2},{own_env1,value1}] = lists:sort(Env), {ok, []} = gen_server:call({global, {ch,41}}, {get_pid_key, modules}), {ok, {application_starter, [ch_sup, {appinc, 41, 43}] }} = @@ -1671,8 +1668,7 @@ get_key(Conf) when is_list(Conf) -> {mod, {application_starter, [ch_sup, {appinc, 41, 43}] }}, {start_phases, [{init, [kalle]}, {takeover, []}, {go, [sune]}]}]} = gen_server:call({global, {ch,41}}, get_pid_all_key), - [{included_applications,[appinc1,appinc2]}, - {own2,val2},{own_env1,value1}] = lists:sort(Env), + [{own2,val2},{own_env1,value1}] = lists:sort(Env), stop_node_nice(Cp1), ok. -- 2.16.3
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