2017-03-31 18:07:56 +02:00
|
|
|
%%%-------------------------------------------------------------------
|
|
|
|
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
|
|
%%% Created : 31 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(mod_proxy65_redis).
|
|
|
|
-behaviour(mod_proxy65).
|
|
|
|
|
|
|
|
%% API
|
|
|
|
-export([init/0, register_stream/2, unregister_stream/1, activate_stream/4]).
|
|
|
|
|
|
|
|
-include("ejabberd.hrl").
|
|
|
|
-include("logger.hrl").
|
|
|
|
|
|
|
|
-record(proxy65, {pid_t :: pid(),
|
|
|
|
pid_i :: pid() | undefined,
|
|
|
|
jid_i :: binary() | undefined}).
|
|
|
|
|
|
|
|
%%%===================================================================
|
|
|
|
%%% API
|
|
|
|
%%%===================================================================
|
|
|
|
init() ->
|
2017-04-15 14:47:00 +02:00
|
|
|
?DEBUG("Cleaning Redis 'proxy65' table...", []),
|
2017-03-31 18:07:56 +02:00
|
|
|
NodeKey = node_key(),
|
|
|
|
case ejabberd_redis:smembers(NodeKey) of
|
|
|
|
{ok, SIDs} ->
|
|
|
|
SIDKeys = [sid_key(S) || S <- SIDs],
|
|
|
|
JIDs = lists:flatmap(
|
|
|
|
fun(SIDKey) ->
|
|
|
|
case ejabberd_redis:get(SIDKey) of
|
|
|
|
{ok, Val} ->
|
|
|
|
try binary_to_term(Val) of
|
|
|
|
#proxy65{jid_i = J} when is_binary(J) ->
|
|
|
|
[jid_key(J)];
|
|
|
|
_ ->
|
|
|
|
[]
|
|
|
|
catch _:badarg ->
|
|
|
|
[]
|
|
|
|
end;
|
|
|
|
_ ->
|
|
|
|
[]
|
|
|
|
end
|
|
|
|
end, SIDKeys),
|
|
|
|
ejabberd_redis:multi(
|
|
|
|
fun() ->
|
|
|
|
if SIDs /= [] ->
|
|
|
|
ejabberd_redis:del(SIDKeys),
|
|
|
|
if JIDs /= [] ->
|
|
|
|
ejabberd_redis:del(JIDs);
|
|
|
|
true ->
|
|
|
|
ok
|
|
|
|
end;
|
|
|
|
true ->
|
|
|
|
ok
|
|
|
|
end,
|
|
|
|
ejabberd_redis:del([NodeKey])
|
|
|
|
end),
|
|
|
|
ok;
|
2017-04-07 08:10:33 +02:00
|
|
|
{error, _} ->
|
2017-03-31 18:07:56 +02:00
|
|
|
{error, db_failure}
|
|
|
|
end.
|
|
|
|
|
|
|
|
register_stream(SID, Pid) ->
|
|
|
|
SIDKey = sid_key(SID),
|
|
|
|
try
|
|
|
|
{ok, Val} = ejabberd_redis:get(SIDKey),
|
|
|
|
try binary_to_term(Val) of
|
|
|
|
#proxy65{pid_i = undefined} = R ->
|
|
|
|
NewVal = term_to_binary(R#proxy65{pid_i = Pid}),
|
|
|
|
ok = ejabberd_redis:set(SIDKey, NewVal);
|
|
|
|
_ ->
|
|
|
|
{error, conflict}
|
|
|
|
catch _:badarg when Val == undefined ->
|
|
|
|
NewVal = term_to_binary(#proxy65{pid_t = Pid}),
|
|
|
|
{ok, _} = ejabberd_redis:multi(
|
|
|
|
fun() ->
|
|
|
|
ejabberd_redis:set(SIDKey, NewVal),
|
|
|
|
ejabberd_redis:sadd(node_key(), [SID])
|
|
|
|
end),
|
|
|
|
ok;
|
|
|
|
_:badarg ->
|
|
|
|
?ERROR_MSG("malformed data in redis (key = '~s'): ~p",
|
|
|
|
[SIDKey, Val]),
|
|
|
|
{error, db_failure}
|
|
|
|
end
|
2017-04-07 08:10:33 +02:00
|
|
|
catch _:{badmatch, {error, _}} ->
|
2017-03-31 18:07:56 +02:00
|
|
|
{error, db_failure}
|
|
|
|
end.
|
|
|
|
|
|
|
|
unregister_stream(SID) ->
|
|
|
|
SIDKey = sid_key(SID),
|
|
|
|
NodeKey = node_key(),
|
|
|
|
try
|
|
|
|
{ok, Val} = ejabberd_redis:get(SIDKey),
|
|
|
|
try binary_to_term(Val) of
|
|
|
|
#proxy65{jid_i = JID} when is_binary(JID) ->
|
|
|
|
JIDKey = jid_key(JID),
|
|
|
|
{ok, _} = ejabberd_redis:multi(
|
|
|
|
fun() ->
|
|
|
|
ejabberd_redis:del([SIDKey]),
|
|
|
|
ejabberd_redis:srem(JIDKey, [SID]),
|
|
|
|
ejabberd_redis:srem(NodeKey, [SID])
|
|
|
|
end),
|
|
|
|
ok;
|
|
|
|
_ ->
|
|
|
|
{ok, _} = ejabberd_redis:multi(
|
|
|
|
fun() ->
|
|
|
|
ejabberd_redis:del([SIDKey]),
|
|
|
|
ejabberd_redis:srem(NodeKey, [SID])
|
|
|
|
end),
|
|
|
|
ok
|
|
|
|
catch _:badarg when Val == undefined ->
|
|
|
|
ok;
|
|
|
|
_:badarg ->
|
|
|
|
?ERROR_MSG("malformed data in redis (key = '~s'): ~p",
|
|
|
|
[SIDKey, Val]),
|
|
|
|
{error, db_failure}
|
|
|
|
end
|
2017-04-07 08:10:33 +02:00
|
|
|
catch _:{badmatch, {error, _}} ->
|
2017-03-31 18:07:56 +02:00
|
|
|
{error, db_failure}
|
|
|
|
end.
|
|
|
|
|
|
|
|
activate_stream(SID, IJID, MaxConnections, _Node) ->
|
|
|
|
SIDKey = sid_key(SID),
|
|
|
|
JIDKey = jid_key(IJID),
|
|
|
|
try
|
|
|
|
{ok, Val} = ejabberd_redis:get(SIDKey),
|
|
|
|
try binary_to_term(Val) of
|
|
|
|
#proxy65{pid_t = TPid, pid_i = IPid,
|
|
|
|
jid_i = undefined} = R when is_pid(IPid) ->
|
|
|
|
{ok, Num} = ejabberd_redis:scard(JIDKey),
|
|
|
|
if Num >= MaxConnections ->
|
|
|
|
{error, {limit, IPid, TPid}};
|
|
|
|
true ->
|
|
|
|
NewVal = term_to_binary(R#proxy65{jid_i = IJID}),
|
|
|
|
{ok, _} = ejabberd_redis:multi(
|
|
|
|
fun() ->
|
|
|
|
ejabberd_redis:sadd(JIDKey, [SID]),
|
|
|
|
ejabberd_redis:set(SIDKey, NewVal)
|
|
|
|
end),
|
|
|
|
{ok, IPid, TPid}
|
|
|
|
end;
|
|
|
|
#proxy65{jid_i = JID} when is_binary(JID) ->
|
|
|
|
{error, conflict};
|
|
|
|
_ ->
|
|
|
|
{error, notfound}
|
|
|
|
catch _:badarg when Val == undefined ->
|
|
|
|
{error, notfound};
|
|
|
|
_:badarg ->
|
|
|
|
?ERROR_MSG("malformed data in redis (key = '~s'): ~p",
|
|
|
|
[SIDKey, Val]),
|
|
|
|
{error, db_failure}
|
|
|
|
end
|
2017-04-07 08:10:33 +02:00
|
|
|
catch _:{badmatch, {error, _}} ->
|
2017-03-31 18:07:56 +02:00
|
|
|
{error, db_failure}
|
|
|
|
end.
|
|
|
|
|
|
|
|
%%%===================================================================
|
|
|
|
%%% Internal functions
|
|
|
|
%%%===================================================================
|
|
|
|
sid_key(SID) ->
|
|
|
|
<<"ejabberd:proxy65:sid:", SID/binary>>.
|
|
|
|
|
|
|
|
jid_key(JID) ->
|
|
|
|
<<"ejabberd:proxy65:initiator:", JID/binary>>.
|
|
|
|
|
|
|
|
node_key() ->
|
|
|
|
Node = erlang:atom_to_binary(node(), latin1),
|
|
|
|
<<"ejabberd:proxy65:node:", Node/binary>>.
|