| 1 |
|
%%%------------------------------------------------------------------- |
| 2 |
|
%%% @doc |
| 3 |
|
%%% A behaviour which should be used by all modules being used in a |
| 4 |
|
%%% routing pipeline. The pipeline, manage by ejabberd_router:route |
| 5 |
|
%%% func, calls filter and route for each successful module. |
| 6 |
|
%%% |
| 7 |
|
%%% Module has to implement both functions, can be a no-op just returning |
| 8 |
|
%%% a tuple of its args. |
| 9 |
|
%%% @end |
| 10 |
|
%%%------------------------------------------------------------------- |
| 11 |
|
-module(xmpp_router). |
| 12 |
|
|
| 13 |
|
-define(ARGS, From :: jid:jid(), |
| 14 |
|
To :: jid:jid(), |
| 15 |
|
Acc :: mongoose_acc:t(), |
| 16 |
|
Packet :: exml:element()). |
| 17 |
|
-record(router_handler, { |
| 18 |
|
filter :: filter_fun(), |
| 19 |
|
route :: route_fun() |
| 20 |
|
}). |
| 21 |
|
-type t() :: #router_handler{}. |
| 22 |
|
-type filter_fun() :: fun((?ARGS) -> drop | filter()). |
| 23 |
|
-type route_fun() :: fun((?ARGS) -> {done, mongoose_acc:t()} | filter()). |
| 24 |
|
-type filter() :: {?ARGS}. |
| 25 |
|
-export_type([filter/0, t/0]). |
| 26 |
|
|
| 27 |
|
-callback route(?ARGS) -> {done, mongoose_acc:t()} | filter(). |
| 28 |
|
-callback filter(?ARGS) -> drop | filter(). |
| 29 |
|
|
| 30 |
|
-export([expand_routing_modules/1]). |
| 31 |
|
-export([call_route/5, call_filter/5]). |
| 32 |
|
|
| 33 |
|
-spec call_route(Handler :: t(), From :: jid:jid(), |
| 34 |
|
To :: jid:jid(), Acc :: mongoose_acc:t(), Packet :: exml:element()) -> |
| 35 |
|
{done, mongoose_acc:t()} | filter(). |
| 36 |
|
call_route(#router_handler{route = Route}, From, To, Acc, Packet) -> |
| 37 |
100811 |
Route(From, To, Acc, Packet). |
| 38 |
|
|
| 39 |
|
-spec call_filter(Handler :: t(), From :: jid:jid(), |
| 40 |
|
To :: jid:jid(), Acc :: mongoose_acc:t(), Packet :: exml:element()) -> drop | filter(). |
| 41 |
|
call_filter(#router_handler{filter = Filter}, From, To, Acc, Packet) -> |
| 42 |
101207 |
Filter(From, To, Acc, Packet). |
| 43 |
|
|
| 44 |
|
-spec expand_routing_modules([module()]) -> [t()]. |
| 45 |
|
expand_routing_modules(ModuleList) -> |
| 46 |
103 |
[ #router_handler{filter = fun Module:filter/4, |
| 47 |
|
route = fun Module:route/4} |
| 48 |
103 |
|| Module <- ModuleList ]. |