1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
% 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_mrview_update_notifier).
-behaviour(gen_event).
-export([start_link/1, notify/1]).
-export([init/1, terminate/2, handle_event/2, handle_call/2, handle_info/2, code_change/3, stop/1]).
-include_lib("couch/include/couch_db.hrl").
start_link(Exec) ->
couch_event_sup:start_link(couch_mrview_update, {couch_mrview_update_notifier, make_ref()}, Exec).
notify(Event) ->
gen_event:notify(couch_mrview_update, Event).
stop(Pid) ->
couch_event_sup:stop(Pid).
init(Fun) ->
{ok, Fun}.
terminate(_Reason, _State) ->
ok.
handle_event(Event, Fun) ->
Fun(Event),
{ok, Fun}.
handle_call(_Request, State) ->
{ok, ok, State}.
handle_info({'EXIT', Pid, Reason}, Pid) ->
couch_log:error("View update notification process ~p died: ~p", [Pid, Reason]),
remove_handler.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
|
