| % 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). |