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/
global_changes_config_listener.erl
71 lines (57 loc) · 1.99 KB
/
global_changes_config_listener.erl
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% Licensed under the Apache License, Version 2.0 (the "License"); you may not
% use this file except in compliance with the License. You may obtain a copy of
% the License at
%
% http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
% License for the specific language governing permissions and limitations under
% the License.
-module(global_changes_config_listener).
-vsn(2).
-behavior(config_listener).
-export([
subscribe/0
]).
-export([
handle_config_change/5,
handle_config_terminate/3
]).
-define(LISTENER, global_changes_listener).
-define(SERVER, global_changes_server).
subscribe() ->
config:listen_for_changes(?MODULE, nil).
handle_config_change("global_changes", "max_event_delay", MaxDelayStr, _, _) ->
try list_to_integer(MaxDelayStr) of
MaxDelay ->
gen_server:cast(?LISTENER, {set_max_event_delay, MaxDelay})
catch error:badarg ->
ok
end,
{ok, nil};
handle_config_change("global_changes", "max_write_delay", MaxDelayStr, _, _) ->
try list_to_integer(MaxDelayStr) of
MaxDelay ->
gen_server:cast(?SERVER, {set_max_write_delay, MaxDelay})
catch error:badarg ->
ok
end,
{ok, nil};
handle_config_change("global_changes", "update_db", "false", _, _) ->
gen_server:cast(?LISTENER, {set_update_db, false}),
gen_server:cast(?SERVER, {set_update_db, false}),
{ok, nil};
handle_config_change("global_changes", "update_db", _, _, _) ->
gen_server:cast(?LISTENER, {set_update_db, true}),
gen_server:cast(?SERVER, {set_update_db, true}),
{ok, nil};
handle_config_change(_, _, _, _, _) ->
{ok, nil}.
handle_config_terminate(_, stop, _) -> ok;
handle_config_terminate(_, _, _) ->
spawn(fun() ->
timer:sleep(5000),
config:listen_for_changes(?MODULE, nil)
end).