| % 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(ioq_config_listener). |
| |
| -vsn(2). |
| -behaviour(config_listener). |
| |
| -export([ |
| subscribe/0 |
| ]). |
| |
| -export([ |
| handle_config_change/5, |
| handle_config_terminate/3 |
| ]). |
| |
| subscribe() -> |
| config:listen_for_changes(?MODULE, nil). |
| |
| handle_config_change("ioq", _Key, _Val, _Persist, St) -> |
| ok = notify_ioq_pids(), |
| {ok, St}; |
| handle_config_change("ioq2", _Key, _Val, _Persist, St) -> |
| ok = notify_ioq_pids(), |
| {ok, St}; |
| handle_config_change("ioq2."++_Type, _Key, _Val, _Persist, St) -> |
| ok = notify_ioq_pids(), |
| {ok, St}; |
| handle_config_change(_Sec, _Key, _Val, _Persist, St) -> |
| {ok, St}. |
| |
| handle_config_terminate(_, stop, _) -> ok; |
| handle_config_terminate(_, _, _) -> |
| % We may have missed a change in the last five seconds |
| gen_server:cast(ioq_server, update_config), |
| spawn(fun() -> |
| timer:sleep(5000), |
| config:listen_for_changes(?MODULE, nil) |
| end). |
| |
| notify_ioq_pids() -> |
| ok = lists:foreach(fun(Pid) -> |
| gen_server:cast(Pid, update_config) |
| end, ioq_sup:get_ioq2_servers()). |