host_of_route/1,
process_iq/1,
unregister_route/1,
+ unregister_route/2,
unregister_routes/1,
get_all_routes/0,
is_my_route/1,
-callback init() -> any().
-callback register_route(binary(), binary(), local_hint(),
undefined | pos_integer(), pid()) -> ok | {error, term()}.
--callback unregister_route(binary(), undefined | pos_integer()) -> ok | {error, term()}.
+-callback unregister_route(binary(), undefined | pos_integer(), pid()) -> ok | {error, term()}.
-callback find_routes(binary()) -> [#route{}].
-callback host_of_route(binary()) -> {ok, binary()} | error.
-callback is_my_route(binary()) -> boolean().
-spec unregister_route(binary()) -> ok.
unregister_route(Domain) ->
+ unregister_route(Domain, self()).
+
+-spec unregister_route(binary(), pid()) -> ok.
+unregister_route(Domain, Pid) ->
case jid:nameprep(Domain) of
error ->
erlang:error({invalid_domain, Domain});
LDomain ->
Mod = get_backend(),
- case Mod:unregister_route(LDomain, get_component_number(LDomain)) of
+ case Mod:unregister_route(
+ LDomain, get_component_number(LDomain), Pid) of
ok ->
?DEBUG("Route unregistered: ~s", [LDomain]);
{error, Err} ->
-behaviour(gen_server).
%% API
--export([init/0, register_route/5, unregister_route/2, find_routes/1,
+-export([init/0, register_route/5, unregister_route/3, find_routes/1,
host_of_route/1, is_my_route/1, is_my_host/1, get_all_routes/0]).
%% gen_server callbacks
-export([init/1, handle_cast/2, handle_call/3, handle_info/2,
end,
transaction(F).
-unregister_route(Domain, undefined) ->
+unregister_route(Domain, undefined, Pid) ->
F = fun () ->
case mnesia:match_object(
- #route{domain = Domain, pid = self(), _ = '_'}) of
+ #route{domain = Domain, pid = Pid, _ = '_'}) of
[R] -> mnesia:delete_object(R);
_ -> ok
end
end,
transaction(F);
-unregister_route(Domain, _) ->
+unregister_route(Domain, _, Pid) ->
F = fun () ->
case mnesia:match_object(
- #route{domain = Domain, pid = self(), _ = '_'}) of
+ #route{domain = Domain, pid = Pid, _ = '_'}) of
[R] ->
I = R#route.local_hint,
ServerHost = R#route.server_host,
--- /dev/null
+%%%-------------------------------------------------------------------
+%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
+%%% Created : 28 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
+%%%
+%%%
+%%% ejabberd, Copyright (C) 2002-2017 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_sql).
+-behaviour(ejabberd_router).
+
+-compile([{parse_transform, ejabberd_sql_pt}]).
+
+%% API
+-export([init/0, register_route/5, unregister_route/3, find_routes/1,
+ host_of_route/1, is_my_route/1, is_my_host/1, get_all_routes/0]).
+
+-include("ejabberd.hrl").
+-include("logger.hrl").
+-include("ejabberd_sql_pt.hrl").
+-include("ejabberd_router.hrl").
+
+%%%===================================================================
+%%% API
+%%%===================================================================
+init() ->
+ Node = erlang:atom_to_binary(node(), latin1),
+ ?INFO_MSG("Cleaning SQL 'route' table...", []),
+ case ejabberd_sql:sql_query(
+ ?MYNAME, ?SQL("delete from route where node=%(Node)s")) of
+ {updated, _} ->
+ ok;
+ Err ->
+ ?ERROR_MSG("failed to clean 'route' table: ~p", [Err]),
+ Err
+ end.
+
+register_route(Domain, ServerHost, LocalHint, _, Pid) ->
+ PidS = enc_pid(Pid),
+ LocalHintS = enc_local_hint(LocalHint),
+ Node = erlang:atom_to_binary(node(Pid), latin1),
+ case ?SQL_UPSERT(?MYNAME, "route",
+ ["!domain=%(Domain)s",
+ "!server_host=%(ServerHost)s",
+ "!node=%(Node)s",
+ "!pid=%(PidS)s",
+ "local_hint=%(LocalHintS)s"]) of
+ ok ->
+ ok;
+ Err ->
+ ?ERROR_MSG("failed to update 'route' table: ~p", [Err]),
+ {error, Err}
+ end.
+
+unregister_route(Domain, _, Pid) ->
+ PidS = enc_pid(Pid),
+ Node = erlang:atom_to_binary(node(Pid), latin1),
+ ejabberd_sql:sql_query(
+ ?MYNAME,
+ ?SQL("delete from route where domain=%(Domain)s "
+ "and pid=%(PidS)s and node=%(Node)s")),
+ %% TODO: return meaningful error
+ ok.
+
+find_routes(Domain) ->
+ case ejabberd_sql:sql_query(
+ ?MYNAME,
+ ?SQL("select @(server_host)s, @(node)s, @(pid)s, @(local_hint)s "
+ "from route where domain=%(Domain)s")) of
+ {selected, Rows} ->
+ lists:flatmap(
+ fun(Row) ->
+ row_to_route(Domain, Row)
+ end, Rows);
+ Err ->
+ ?ERROR_MSG("failed to select from 'route' table: ~p", [Err]),
+ {error, Err}
+ end.
+
+host_of_route(Domain) ->
+ case ejabberd_sql:sql_query(
+ ?MYNAME,
+ ?SQL("select @(server_host)s from route where domain=%(Domain)s")) of
+ {selected, [{ServerHost}|_]} ->
+ {ok, ServerHost};
+ {selected, []} ->
+ error;
+ Err ->
+ ?ERROR_MSG("failed to select from 'route' table: ~p", [Err]),
+ error
+ end.
+
+is_my_route(Domain) ->
+ case host_of_route(Domain) of
+ {ok, _} -> true;
+ _ -> false
+ end.
+
+is_my_host(Domain) ->
+ {ok, Domain} == host_of_route(Domain).
+
+get_all_routes() ->
+ case ejabberd_sql:sql_query(
+ ?MYNAME,
+ ?SQL("select @(domain)s from route where domain <> server_host")) of
+ {selected, Domains} ->
+ [Domain || {Domain} <- Domains];
+ Err ->
+ ?ERROR_MSG("failed to select from 'route' table: ~p", [Err]),
+ []
+ end.
+
+%%%===================================================================
+%%% Internal functions
+%%%===================================================================
+enc_local_hint(undefined) ->
+ <<"">>;
+enc_local_hint(LocalHint) ->
+ jlib:term_to_expr(LocalHint).
+
+dec_local_hint(<<"">>) ->
+ undefined;
+dec_local_hint(S) ->
+ ejabberd_sql:decode_term(S).
+
+-spec enc_pid(pid()) -> binary().
+enc_pid(Pid) ->
+ list_to_binary(erlang:pid_to_list(Pid)).
+
+-spec dec_pid(binary(), binary()) -> pid().
+dec_pid(PidBin, NodeBin) ->
+ PidStr = binary_to_list(PidBin),
+ Pid = erlang:list_to_pid(PidStr),
+ case erlang:binary_to_atom(NodeBin, latin1) of
+ Node when Node == node() ->
+ Pid;
+ Node ->
+ try set_node_id(PidStr, NodeBin)
+ catch _:badarg ->
+ erlang:error({node_down, Node})
+ end
+ end.
+
+-spec set_node_id(string(), binary()) -> pid().
+set_node_id(PidStr, NodeBin) ->
+ ExtPidStr = erlang:pid_to_list(
+ binary_to_term(
+ <<131,103,100,(size(NodeBin)):16,NodeBin/binary,0:72>>)),
+ [H|_] = string:tokens(ExtPidStr, "."),
+ [_|T] = string:tokens(PidStr, "."),
+ erlang:list_to_pid(string:join([H|T], ".")).
+
+row_to_route(Domain, {ServerHost, NodeS, PidS, LocalHintS} = Row) ->
+ try [#route{domain = Domain,
+ server_host = ServerHost,
+ pid = dec_pid(PidS, NodeS),
+ local_hint = dec_local_hint(LocalHintS)}]
+ catch _:{node_down, _} ->
+ [];
+ E:R ->
+ ?ERROR_MSG("failed to decode row from 'route' table:~n"
+ "Row = ~p~n"
+ "Domain = ~s~n"
+ "Reason = ~p",
+ [Row, Domain, {E, {R, erlang:get_stacktrace()}}]),
+ []
+ end.
projects / ejabberd / commitdiff