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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(couch_log_sup).
-behaviour(supervisor).
-vsn(1).
-behaviour(config_listener).
-export([init/1]).
-export([start_link/0]).
-export([handle_config_change/5, handle_config_terminate/3]).
start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
init([]) ->
ok = couch_log_config:init(),
{ok, {{one_for_one, 10, 10}, children()}}.
children() ->
[
{
couch_log_server,
{couch_log_server, start_link, []},
permanent,
5000,
worker,
[couch_log_server]
},
{
couch_log_monitor,
{couch_log_monitor, start_link, []},
permanent,
5000,
worker,
[couch_log_monitor]
},
{
config_listener_mon,
{config_listener_mon, start_link, [?MODULE, nil]},
permanent,
5000,
worker,
[config_listener_mon]
}
].
handle_config_change("log", Key, _, _, S) ->
case Key of
"level" ->
couch_log_config:reconfigure();
"max_message_size" ->
couch_log_config:reconfigure();
"strip_last_msg" ->
couch_log_config:reconfigure();
"filter_fields" ->
couch_log_config:reconfigure();
_ ->
% Someone may have changed the config for
% the writer so we need to re-initialize.
couch_log_server:reconfigure()
end,
notify_listeners(),
{ok, S};
handle_config_change(_, _, _, _, S) ->
{ok, S}.
handle_config_terminate(_Server, _Reason, _State) ->
ok.
-ifdef(TEST).
notify_listeners() ->
Listeners = application:get_env(couch_log, config_listeners, []),
lists:foreach(
fun(L) ->
L ! couch_log_config_change_finished
end,
Listeners
).
-else.
notify_listeners() ->
ok.
-endif.
|
