106 lines
2.2 KiB
Erlang
106 lines
2.2 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_router.erl
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%%% Author : Alexey Shchepin <alexey@sevcom.net>
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%%% Purpose :
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%%% Created : 27 Nov 2002 by Alexey Shchepin <alexey@sevcom.net>
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%%% Id : $Id$
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%%%----------------------------------------------------------------------
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-module(ejabberd_router).
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-author('alexey@sevcom.net').
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-vsn('$Revision$ ').
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-export([route/3]).
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-export([start/0, init/0]).
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-include("ejabberd.hrl").
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-record(route, {domain, node, pid}).
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start() ->
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spawn(ejabberd_router, init, []).
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init() ->
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register(ejabberd_router, self()),
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mnesia:create_table(route,
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[{ram_copies, [node()]},
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{attributes,
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record_info(fields, route)}]),
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loop().
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loop() ->
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receive
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{route, From, To, Packet} ->
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% TODO
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do_route(From, To, Packet),
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loop();
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{register_route, Domain, Pid, Node} ->
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F = fun() ->
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case mnesia:wread({route, Domain}) of
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[] ->
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ok;
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[Old] ->
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% TODO: notify
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ok
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end,
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mnesia:write(#route{domain = Domain,
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node = Node,
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pid = Pid})
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end,
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mnesia:transaction(F),
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loop();
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{unregister_route, Domain} ->
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F = fun() ->
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case mnesia:wread({route, Domain}) of
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[] ->
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ok;
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[Old] ->
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% TODO: notify
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ok
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end,
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mnesia:delete({route, Domain})
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end,
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mnesia:transaction(F),
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loop();
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_ ->
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loop()
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end.
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do_route(From, To, Packet) ->
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?DEBUG("route~n\tfrom ~p~n\tto ~p~n\tpacket ~p~n", [From, To, Packet]),
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{DstNode, DstDomain, DstResourse} = To,
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F = fun() ->
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case mnesia:read({route, DstDomain}) of
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[] ->
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error;
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[R] ->
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{ok, R#route.node, R#route.pid}
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end
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end,
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case mnesia:transaction(F) of
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{atomic, error} ->
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% TODO: start s2s instead of below
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{xmlelement, Name, Attrs, SubTags} = Packet,
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case xml:get_attr_s("type", Attrs) of
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"error" ->
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ok;
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_ ->
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Err = jlib:make_error_reply(Packet,
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502, "Service Unavailable"),
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ejabberd_router ! {route, To, From, Err}
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end;
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{atomic, {ok, Node, Pid}} ->
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{Pid, Node} ! {packet, From, To, Packet};
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_ ->
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% TODO
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error
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end.
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route(From, To, Packet) ->
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ejabberd_router ! {route, From, To, Packet}.
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