%%%-------------------------------------------------------------------
%%% File : mod_offline_riak.erl
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 15 Apr 2016 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_offline_riak).
-behaviour(mod_offline).
-export([init/2, store_message/1, pop_messages/2, remove_expired_messages/1,
remove_old_messages/2, remove_user/2, read_message_headers/2,
read_message/3, remove_message/3, read_all_messages/2,
remove_all_messages/2, count_messages/2, import/1]).
-include("xmpp.hrl").
-include("mod_offline.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
store_message(#offline_msg{us = US, packet = Pkt, timestamp = TS} = M) ->
El = xmpp:encode(Pkt),
ejabberd_riak:put(M#offline_msg{packet = El},
offline_msg_schema(),
[{i, TS}, {'2i', [{<<"us">>, US}]}]).
pop_messages(LUser, LServer) ->
case ejabberd_riak:get_by_index(offline_msg, offline_msg_schema(),
<<"us">>, {LUser, LServer}) of
{ok, Rs} ->
try
lists:foreach(
fun(#offline_msg{timestamp = T}) ->
ok = ejabberd_riak:delete(offline_msg, T)
end, Rs),
{ok, lists:keysort(#offline_msg.timestamp, Rs)}
catch _:{badmatch, Err} ->
Err
end;
Err ->
Err
end.
remove_expired_messages(_LServer) ->
%% TODO
{atomic, ok}.
remove_old_messages(_Days, _LServer) ->
%% TODO
{atomic, ok}.
remove_user(LUser, LServer) ->
{atomic, ejabberd_riak:delete_by_index(offline_msg,
<<"us">>, {LUser, LServer})}.
read_message_headers(LUser, LServer) ->
case ejabberd_riak:get_by_index(
offline_msg, offline_msg_schema(),
<<"us">>, {LUser, LServer}) of
{ok, Rs} ->
Hdrs = lists:map(
fun(#offline_msg{from = From, to = To, packet = Pkt,
timestamp = TS}) ->
Seq = now_to_integer(TS),
{Seq, From, To, TS, Pkt}
end, Rs),
lists:keysort(1, Hdrs);
_Err ->
[]
end.
read_message(_LUser, _LServer, I) ->
TS = integer_to_now(I),
case ejabberd_riak:get(offline_msg, offline_msg_schema(), TS) of
{ok, Msg} ->
{ok, Msg};
_ ->
error
end.
remove_message(_LUser, _LServer, I) ->
TS = integer_to_now(I),
ejabberd_riak:delete(offline_msg, TS),
ok.
read_all_messages(LUser, LServer) ->
case ejabberd_riak:get_by_index(
offline_msg, offline_msg_schema(),
<<"us">>, {LUser, LServer}) of
{ok, Rs} ->
lists:keysort(#offline_msg.timestamp, Rs);
_Err ->
[]
end.
remove_all_messages(LUser, LServer) ->
Res = ejabberd_riak:delete_by_index(offline_msg,
<<"us">>, {LUser, LServer}),
{atomic, Res}.
count_messages(LUser, LServer) ->
case ejabberd_riak:count_by_index(
offline_msg, <<"us">>, {LUser, LServer}) of
{ok, Res} ->
Res;
_ ->
0
end.
import(#offline_msg{us = US, timestamp = TS} = M) ->
ejabberd_riak:put(M, offline_msg_schema(),
[{i, TS}, {'2i', [{<<"us">>, US}]}]).
%%%===================================================================
%%% Internal functions
%%%===================================================================
offline_msg_schema() ->
{record_info(fields, offline_msg), #offline_msg{}}.
now_to_integer({MS, S, US}) ->
(MS * 1000000 + S) * 1000000 + US.
integer_to_now(Int) ->
Secs = Int div 1000000,
USec = Int rem 1000000,
MSec = Secs div 1000000,
Sec = Secs rem 1000000,
{MSec, Sec, USec}.
