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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2015, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 9 Mar 2015 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(ejabberd_sm_mnesia).
-behaviour(gen_server).
-behaviour(ejabberd_sm).
%% API
-export([init/0,
set_session/1,
delete_session/4,
get_sessions/0,
get_sessions/1,
get_sessions/2,
get_sessions/3]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-include("ejabberd.hrl").
-include("ejabberd_sm.hrl").
-include("jlib.hrl").
-include_lib("stdlib/include/ms_transform.hrl").
-record(state, {}).
%%%===================================================================
%%% API
%%%===================================================================
-spec init() -> ok | {error, any()}.
init() ->
case gen_server:start_link({local, ?MODULE}, ?MODULE, [], []) of
{ok, _Pid} ->
ok;
Err ->
Err
end.
-spec set_session(#session{}) -> ok.
set_session(Session) ->
mnesia:dirty_write(Session).
-spec delete_session(binary(), binary(), binary(), sid()) ->
{ok, #session{}} | {error, notfound}.
delete_session(_LUser, _LServer, _LResource, SID) ->
case mnesia:dirty_read(session, SID) of
[Session] ->
mnesia:dirty_delete(session, SID),
{ok, Session};
[] ->
{error, notfound}
end.
-spec get_sessions() -> [#session{}].
get_sessions() ->
ets:tab2list(session).
-spec get_sessions(binary()) -> [#session{}].
get_sessions(LServer) ->
mnesia:dirty_select(session,
[{#session{usr = '$1', _ = '_'},
[{'==', {element, 2, '$1'}, LServer}], ['$_']}]).
-spec get_sessions(binary(), binary()) -> [#session{}].
get_sessions(LUser, LServer) ->
mnesia:dirty_index_read(session, {LUser, LServer}, #session.us).
-spec get_sessions(binary(), binary(), binary()) -> [#session{}].
get_sessions(LUser, LServer, LResource) ->
mnesia:dirty_index_read(session, {LUser, LServer, LResource}, #session.usr).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
init([]) ->
update_tables(),
mnesia:create_table(session,
[{ram_copies, [node()]},
{attributes, record_info(fields, session)}]),
mnesia:create_table(session_counter,
[{ram_copies, [node()]},
{attributes, record_info(fields, session_counter)}]),
mnesia:add_table_index(session, usr),
mnesia:add_table_index(session, us),
mnesia:add_table_copy(session, node(), ram_copies),
mnesia:add_table_copy(session_counter, node(), ram_copies),
mnesia:subscribe(system),
{ok, #state{}}.
handle_call(_Request, _From, State) ->
Reply = ok,
{reply, Reply, State}.
handle_cast(_Msg, State) ->
{noreply, State}.
handle_info({mnesia_system_event, {mnesia_down, Node}}, State) ->
ets:select_delete(
session,
ets:fun2ms(
fun(#session{sid = {_, Pid}}) ->
node(Pid) == Node
end)),
{noreply, State};
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
update_tables() ->
case catch mnesia:table_info(session, attributes) of
[ur, user, node] -> mnesia:delete_table(session);
[ur, user, pid] -> mnesia:delete_table(session);
[usr, us, pid] -> mnesia:delete_table(session);
[usr, us, sid, priority, info] -> mnesia:delete_table(session);
[sid, usr, us, priority] ->
mnesia:delete_table(session);
[sid, usr, us, priority, info] -> ok;
{'EXIT', _} -> ok
end,
case lists:member(presence, mnesia:system_info(tables))
of
true -> mnesia:delete_table(presence);
false -> ok
end,
case lists:member(local_session, mnesia:system_info(tables)) of
true ->
mnesia:delete_table(local_session);
false ->
ok
end.
|
