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
|
%%%----------------------------------------------------------------------
%%% File : ejabberd_router.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose :
%%% Created : 27 Nov 2002 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(ejabberd_router).
-author('alexey@sevcom.net').
-vsn('$Revision$ ').
-export([route/3, register_route/1, register_local_route/1,
dirty_get_all_routes/0,
dirty_get_all_domains/0
]).
-export([start/0, init/0]).
-include("ejabberd.hrl").
-record(route, {domain, node, pid}).
-record(local_route, {domain, pid}).
start() ->
spawn(ejabberd_router, init, []).
init() ->
register(ejabberd_router, self()),
mnesia:create_table(route,
[{ram_copies, [node()]},
{attributes,
record_info(fields, route)}]),
mnesia:create_table(local_route,
[{ram_copies, [node()]},
{local_content, true},
{attributes,
record_info(fields, local_route)}]),
loop().
loop() ->
receive
{route, From, To, Packet} ->
% TODO
do_route(From, To, Packet),
loop();
{register_route, Domain, Pid, Node} ->
F = fun() ->
case mnesia:wread({route, Domain}) of
[] ->
ok;
[Old] ->
% TODO: notify
ok
end,
mnesia:write(#route{domain = Domain,
node = Node,
pid = Pid})
end,
mnesia:transaction(F),
loop();
{register_local_route, Domain, Pid} ->
F = fun() ->
mnesia:write(#local_route{domain = Domain,
pid = Pid})
end,
mnesia:transaction(F),
loop();
{unregister_route, Domain} ->
F = fun() ->
case mnesia:wread({route, Domain}) of
[] ->
ok;
[Old] ->
% TODO: notify
ok
end,
mnesia:delete({route, Domain})
end,
mnesia:transaction(F),
loop();
_ ->
loop()
end.
do_route(From, To, Packet) ->
?DEBUG("route~n\tfrom ~p~n\tto ~p~n\tpacket ~p~n", [From, To, Packet]),
{DstNode, DstDomain, DstResourse} = To,
F = fun() ->
case mnesia:read({local_route, DstDomain}) of
[] ->
case mnesia:read({route, DstDomain}) of
[] ->
false;
[R] ->
{ok, R#route.node, R#route.pid}
end;
[R] ->
{ok, node(), R#local_route.pid}
end
end,
case mnesia:transaction(F) of
{atomic, false} ->
ejabberd_s2s ! {route, From, To, Packet};
{atomic, {ok, Node, Pid}} ->
case node() of
Node ->
?DEBUG("routed to process ~p~n", [Pid]),
Pid ! {route, From, To, Packet};
_ ->
?DEBUG("routed to node ~p~n", [Node]),
{ejabberd_router, Node} ! {route, From, To, Packet}
end;
_ ->
% TODO
error
end.
route(From, To, Packet) ->
ejabberd_router ! {route, From, To, Packet}.
register_route(Domain) ->
ejabberd_router ! {register_route, Domain, self(), node()}.
register_local_route(Domain) ->
ejabberd_router ! {register_local_route, Domain, self()}.
dirty_get_all_routes() ->
lists:delete(?MYNAME,
lists:umerge(lists:sort(mnesia:dirty_all_keys(route)),
lists:sort(mnesia:dirty_all_keys(local_route)))).
dirty_get_all_domains() ->
lists:umerge(lists:sort(mnesia:dirty_all_keys(route)),
lists:sort(mnesia:dirty_all_keys(local_route))).
|
