116 lines
3.5 KiB
Erlang
116 lines
3.5 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% Created : 30 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2017 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%-------------------------------------------------------------------
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-module(mod_carboncopy_redis).
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-behaviour(mod_carboncopy).
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%% API
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-export([init/2, enable/4, disable/3, list/2]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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%%%===================================================================
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%%% API
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%%%===================================================================
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init(_Host, _Opts) ->
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clean_table().
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enable(LUser, LServer, LResource, NS) ->
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USKey = us_key(LUser, LServer),
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NodeKey = node_key(),
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JID = jid:encode({LUser, LServer, LResource}),
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case ejabberd_redis:multi(
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fun() ->
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ejabberd_redis:hset(USKey, LResource, NS),
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ejabberd_redis:sadd(NodeKey, [JID])
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end) of
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{ok, _} ->
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ok;
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Err ->
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?ERROR_MSG("failed to write in redis: ~p", [Err]),
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Err
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end.
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disable(LUser, LServer, LResource) ->
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USKey = us_key(LUser, LServer),
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NodeKey = node_key(),
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JID = jid:encode({LUser, LServer, LResource}),
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case ejabberd_redis:multi(
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fun() ->
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ejabberd_redis:hdel(USKey, [LResource]),
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ejabberd_redis:srem(NodeKey, [JID])
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end) of
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{ok, _} ->
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ok;
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Err ->
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?ERROR_MSG("failed to delete from redis: ~p", [Err]),
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Err
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end.
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list(LUser, LServer) ->
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USKey = us_key(LUser, LServer),
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case ejabberd_redis:hgetall(USKey) of
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{ok, Vals} ->
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Vals;
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Err ->
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?ERROR_MSG("failed to read from redis: ~p", [Err]),
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[]
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end.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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clean_table() ->
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?INFO_MSG("Cleaning Redis 'carboncopy' table...", []),
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NodeKey = node_key(),
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case ejabberd_redis:smembers(NodeKey) of
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{ok, JIDs} ->
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case ejabberd_redis:multi(
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fun() ->
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lists:foreach(
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fun(JID) ->
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{U, S, R} = jid:split(jid:decode(JID)),
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USKey = us_key(U, S),
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ejabberd_redis:hdel(USKey, [R])
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end, JIDs)
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end) of
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{ok, _} ->
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ok;
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Err ->
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?ERROR_MSG("failed to delete from redis: ~p", [Err])
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end;
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Err ->
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?ERROR_MSG("failed to read from redis: ~p", [Err])
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end,
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case ejabberd_redis:del([NodeKey]) of
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{ok, _} -> ok;
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Error -> ?ERROR_MSG("failed to delete from redis: ~p", [Error])
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end.
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us_key(LUser, LServer) ->
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<<"ejabberd:carboncopy:users:", LUser/binary, $@, LServer/binary>>.
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node_key() ->
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Node = erlang:atom_to_binary(node(), latin1),
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<<"ejabberd:carboncopy:nodes:", Node/binary>>.
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