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%%%----------------------------------------------------------------------
%%% File : gen_iq_handler.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose :
%%% Created : 22 Jan 2003 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(gen_iq_handler).
-author('alexey@sevcom.net').
-vsn('$Revision$ ').
-export([start/0,
add_iq_handler/5,
remove_iq_handler/2,
stop_iq_handler/3,
handle/6,
process_iq/5,
queue_init/2]).
-include("ejabberd.hrl").
start() ->
ok.
add_iq_handler(Component, NS, Module, Function, Type) ->
case Type of
no_queue ->
Component:register_iq_handler(NS, Module, Function, no_queue);
one_queue ->
Pid = spawn(?MODULE, queue_init, [Module, Function]),
Component:register_iq_handler(NS, Module, Function,
{one_queue, Pid});
parallel ->
Component:register_iq_handler(NS, Module, Function, parallel)
end.
remove_iq_handler(Component, NS) ->
Component:unregister_iq_handler(NS).
stop_iq_handler(Module, Function, Opts) ->
case Opts of
{one_queue, Pid} ->
exit(Pid, kill);
_ ->
ok
end.
handle(Module, Function, Opts, From, To, IQ) ->
case Opts of
no_queue ->
process_iq(Module, Function, From, To, IQ);
{one_queue, Pid} ->
Pid ! {process_iq, From, To, IQ};
parallel ->
spawn(?MODULE, process_iq, [Module, Function, From, To, IQ]);
_ ->
todo
end.
process_iq(Module, Function, From, To, IQ) ->
case catch Module:Function(From, To, IQ) of
{'EXIT', Reason} ->
?ERROR_MSG("~p", [Reason]);
ResIQ ->
if
ResIQ /= ignore ->
ejabberd_router:route(To, From,
jlib:iq_to_xml(ResIQ));
true ->
ok
end
end.
queue_init(Module, Function) ->
queue_loop(Module, Function).
% TODO: use gen_event
queue_loop(Module, Function) ->
receive
{process_iq, From, To, IQ} ->
process_iq(Module, Function, From, To, IQ),
queue_loop(Module, Function);
_ ->
queue_loop(Module, Function)
end.
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