%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_offline_riak).
-behaviour(mod_offline).
-export([init/2, store_messages/5, 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/2]).
-include("jlib.hrl").
-include("mod_offline.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
store_messages(Host, {User, _}, Msgs, Len, MaxOfflineMsgs) ->
Count = if MaxOfflineMsgs =/= infinity ->
Len + count_messages(User, Host);
true -> 0
end,
if
Count > MaxOfflineMsgs ->
{atomic, discard};
true ->
try
lists:foreach(
fun(#offline_msg{us = US,
timestamp = TS} = M) ->
ok = ejabberd_riak:put(
M, offline_msg_schema(),
[{i, TS}, {'2i', [{<<"us">>, US}]}])
end, Msgs),
{atomic, ok}
catch _:{badmatch, Err} ->
{atomic, Err}
end
end.
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),
NewPkt = jlib:add_delay_info(
Pkt, LServer, TS, <<"Offline Storage">>),
{Seq, From, To, NewPkt}
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(_LServer, #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}.
