mirror of
https://github.com/processone/ejabberd.git
synced 2024-12-02 16:37:52 +01:00
190 lines
5.2 KiB
Erlang
190 lines
5.2 KiB
Erlang
%%%-------------------------------------------------------------------
|
|
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%% Created : 28 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% ejabberd, Copyright (C) 2002-2019 ProcessOne
|
|
%%%
|
|
%%% This program is free software; you can redistribute it and/or
|
|
%%% modify it under the terms of the GNU General Public License as
|
|
%%% published by the Free Software Foundation; either version 2 of the
|
|
%%% License, or (at your option) any later version.
|
|
%%%
|
|
%%% This program is distributed in the hope that it will be useful,
|
|
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
%%% General Public License for more details.
|
|
%%%
|
|
%%% You should have received a copy of the GNU General Public License along
|
|
%%% with this program; if not, write to the Free Software Foundation, Inc.,
|
|
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
%%%
|
|
%%%-------------------------------------------------------------------
|
|
-module(ejabberd_router_redis).
|
|
-behaviour(ejabberd_router).
|
|
-behaviour(gen_server).
|
|
|
|
%% API
|
|
-export([init/0, register_route/5, unregister_route/3, find_routes/1,
|
|
get_all_routes/0]).
|
|
%% gen_server callbacks
|
|
-export([init/1, handle_cast/2, handle_call/3, handle_info/2,
|
|
terminate/2, code_change/3, start_link/0]).
|
|
|
|
-include("logger.hrl").
|
|
-include("ejabberd_router.hrl").
|
|
|
|
-record(state, {}).
|
|
|
|
-define(ROUTES_KEY, <<"ejabberd:routes">>).
|
|
-define(DOMAINS_KEY, <<"ejabberd:domains">>).
|
|
|
|
%%%===================================================================
|
|
%%% API
|
|
%%%===================================================================
|
|
init() ->
|
|
Spec = {?MODULE, {?MODULE, start_link, []},
|
|
transient, 5000, worker, [?MODULE]},
|
|
case supervisor:start_child(ejabberd_backend_sup, Spec) of
|
|
{ok, _Pid} -> ok;
|
|
Err -> Err
|
|
end.
|
|
|
|
-spec start_link() -> {ok, pid()} | {error, any()}.
|
|
start_link() ->
|
|
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
|
|
|
|
register_route(Domain, ServerHost, LocalHint, _, Pid) ->
|
|
DomKey = domain_key(Domain),
|
|
PidKey = term_to_binary(Pid),
|
|
T = term_to_binary({ServerHost, LocalHint}),
|
|
case ejabberd_redis:multi(
|
|
fun() ->
|
|
ejabberd_redis:hset(DomKey, PidKey, T),
|
|
ejabberd_redis:sadd(?DOMAINS_KEY, [Domain]),
|
|
if Domain /= ServerHost ->
|
|
ejabberd_redis:sadd(?ROUTES_KEY, [Domain]);
|
|
true ->
|
|
ok
|
|
end
|
|
end) of
|
|
{ok, _} ->
|
|
ok;
|
|
{error, _} ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
unregister_route(Domain, _, Pid) ->
|
|
DomKey = domain_key(Domain),
|
|
PidKey = term_to_binary(Pid),
|
|
try
|
|
{ok, Num} = ejabberd_redis:hdel(DomKey, [PidKey]),
|
|
if Num > 0 ->
|
|
{ok, Len} = ejabberd_redis:hlen(DomKey),
|
|
if Len == 0 ->
|
|
{ok, _} = ejabberd_redis:multi(
|
|
fun() ->
|
|
ejabberd_redis:del([DomKey]),
|
|
ejabberd_redis:srem(?ROUTES_KEY, [Domain]),
|
|
ejabberd_redis:srem(?DOMAINS_KEY, [Domain])
|
|
end),
|
|
ok;
|
|
true ->
|
|
ok
|
|
end;
|
|
true ->
|
|
ok
|
|
end
|
|
catch _:{badmatch, {error, _}} ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
find_routes(Domain) ->
|
|
DomKey = domain_key(Domain),
|
|
case ejabberd_redis:hgetall(DomKey) of
|
|
{ok, Vals} ->
|
|
{ok, decode_routes(Domain, Vals)};
|
|
_ ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
get_all_routes() ->
|
|
case ejabberd_redis:smembers(?ROUTES_KEY) of
|
|
{ok, Routes} ->
|
|
{ok, Routes};
|
|
_ ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
get_all_domains() ->
|
|
case ejabberd_redis:smembers(?DOMAINS_KEY) of
|
|
{ok, Domains} ->
|
|
{ok, Domains};
|
|
_ ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
%%%===================================================================
|
|
%%% gen_server callbacks
|
|
%%%===================================================================
|
|
init([]) ->
|
|
clean_table(),
|
|
{ok, #state{}}.
|
|
|
|
handle_call(Request, From, State) ->
|
|
?WARNING_MSG("Unexpected call from ~p: ~p", [From, Request]),
|
|
{noreply, State}.
|
|
|
|
handle_cast(Msg, State) ->
|
|
?WARNING_MSG("Unexpected cast: ~p", [Msg]),
|
|
{noreply, State}.
|
|
|
|
handle_info(Info, State) ->
|
|
?ERROR_MSG("Unexpected info: ~p", [Info]),
|
|
{noreply, State}.
|
|
|
|
terminate(_Reason, _State) ->
|
|
ok.
|
|
|
|
code_change(_OldVsn, State, _Extra) ->
|
|
{ok, State}.
|
|
|
|
%%%===================================================================
|
|
%%% Internal functions
|
|
%%%===================================================================
|
|
clean_table() ->
|
|
?DEBUG("Cleaning Redis route entries...", []),
|
|
lists:foreach(
|
|
fun(#route{domain = Domain, pid = Pid}) when node(Pid) == node() ->
|
|
unregister_route(Domain, undefined, Pid);
|
|
(_) ->
|
|
ok
|
|
end, find_routes()).
|
|
|
|
find_routes() ->
|
|
case get_all_domains() of
|
|
{ok, Domains} ->
|
|
lists:flatmap(
|
|
fun(Domain) ->
|
|
case find_routes(Domain) of
|
|
{ok, Routes} -> Routes;
|
|
{error, _} -> []
|
|
end
|
|
end, Domains);
|
|
{error, _} ->
|
|
[]
|
|
end.
|
|
|
|
domain_key(Domain) ->
|
|
<<"ejabberd:route:", Domain/binary>>.
|
|
|
|
decode_routes(Domain, Vals) ->
|
|
lists:map(
|
|
fun({Pid, Data}) ->
|
|
{ServerHost, LocalHint} = binary_to_term(Data),
|
|
#route{domain = Domain,
|
|
pid = binary_to_term(Pid),
|
|
server_host = ServerHost,
|
|
local_hint = LocalHint}
|
|
end, Vals).
|