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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_last_mnesia).
-behaviour(mod_last).
%% API
-export([init/2, import/2, get_last/2, store_last_info/4, remove_user/2]).
-include("mod_last.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
mnesia:create_table(last_activity,
[{disc_copies, [node()]},
{attributes,
record_info(fields, last_activity)}]),
update_table().
get_last(LUser, LServer) ->
case mnesia:dirty_read(last_activity, {LUser, LServer}) of
[] ->
not_found;
[#last_activity{timestamp = TimeStamp,
status = Status}] ->
{ok, TimeStamp, Status}
end.
store_last_info(LUser, LServer, TimeStamp, Status) ->
US = {LUser, LServer},
F = fun () ->
mnesia:write(#last_activity{us = US,
timestamp = TimeStamp,
status = Status})
end,
mnesia:transaction(F).
remove_user(LUser, LServer) ->
US = {LUser, LServer},
F = fun () -> mnesia:delete({last_activity, US}) end,
mnesia:transaction(F).
import(_LServer, #last_activity{} = LA) ->
mnesia:dirty_write(LA).
%%%===================================================================
%%% Internal functions
%%%===================================================================
update_table() ->
Fields = record_info(fields, last_activity),
case mnesia:table_info(last_activity, attributes) of
Fields ->
ejabberd_config:convert_table_to_binary(
last_activity, Fields, set,
fun(#last_activity{us = {U, _}}) -> U end,
fun(#last_activity{us = {U, S}, status = Status} = R) ->
R#last_activity{us = {iolist_to_binary(U),
iolist_to_binary(S)},
status = iolist_to_binary(Status)}
end);
_ ->
?INFO_MSG("Recreating last_activity table", []),
mnesia:transform_table(last_activity, ignore, Fields)
end.
|
