mirror of
https://github.com/processone/ejabberd.git
synced 2024-10-11 15:08:56 +02:00
227 lines
6.8 KiB
Erlang
227 lines
6.8 KiB
Erlang
%%%-------------------------------------------------------------------
|
|
%%% File : mod_offline_mnesia.erl
|
|
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% ejabberd, Copyright (C) 2002-2018 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_mnesia).
|
|
|
|
-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]).
|
|
-export([need_transform/1, transform/1]).
|
|
|
|
-include("xmpp.hrl").
|
|
-include("mod_offline.hrl").
|
|
-include("logger.hrl").
|
|
|
|
%%%===================================================================
|
|
%%% API
|
|
%%%===================================================================
|
|
init(_Host, _Opts) ->
|
|
ejabberd_mnesia:create(?MODULE, offline_msg,
|
|
[{disc_only_copies, [node()]}, {type, bag},
|
|
{attributes, record_info(fields, offline_msg)}]).
|
|
|
|
store_message(#offline_msg{packet = Pkt} = OffMsg) ->
|
|
El = xmpp:encode(Pkt),
|
|
mnesia:dirty_write(OffMsg#offline_msg{packet = El}).
|
|
|
|
pop_messages(LUser, LServer) ->
|
|
US = {LUser, LServer},
|
|
F = fun () ->
|
|
Rs = mnesia:wread({offline_msg, US}),
|
|
mnesia:delete({offline_msg, US}),
|
|
Rs
|
|
end,
|
|
case mnesia:transaction(F) of
|
|
{atomic, L} ->
|
|
{ok, lists:keysort(#offline_msg.timestamp, L)};
|
|
{aborted, Reason} ->
|
|
{error, Reason}
|
|
end.
|
|
|
|
remove_expired_messages(_LServer) ->
|
|
TimeStamp = p1_time_compat:timestamp(),
|
|
F = fun () ->
|
|
mnesia:write_lock_table(offline_msg),
|
|
mnesia:foldl(fun (Rec, _Acc) ->
|
|
case Rec#offline_msg.expire of
|
|
never -> ok;
|
|
TS ->
|
|
if TS < TimeStamp ->
|
|
mnesia:delete_object(Rec);
|
|
true -> ok
|
|
end
|
|
end
|
|
end,
|
|
ok, offline_msg)
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
remove_old_messages(Days, _LServer) ->
|
|
S = p1_time_compat:system_time(seconds) - 60 * 60 * 24 * Days,
|
|
MegaSecs1 = S div 1000000,
|
|
Secs1 = S rem 1000000,
|
|
TimeStamp = {MegaSecs1, Secs1, 0},
|
|
F = fun () ->
|
|
mnesia:write_lock_table(offline_msg),
|
|
mnesia:foldl(fun (#offline_msg{timestamp = TS} = Rec,
|
|
_Acc)
|
|
when TS < TimeStamp ->
|
|
mnesia:delete_object(Rec);
|
|
(_Rec, _Acc) -> ok
|
|
end,
|
|
ok, offline_msg)
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
remove_user(LUser, LServer) ->
|
|
US = {LUser, LServer},
|
|
F = fun () -> mnesia:delete({offline_msg, US}) end,
|
|
mnesia:transaction(F).
|
|
|
|
read_message_headers(LUser, LServer) ->
|
|
Msgs = mnesia:dirty_read({offline_msg, {LUser, LServer}}),
|
|
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, Msgs),
|
|
lists:keysort(1, Hdrs).
|
|
|
|
read_message(LUser, LServer, I) ->
|
|
US = {LUser, LServer},
|
|
TS = integer_to_now(I),
|
|
case mnesia:dirty_match_object(
|
|
offline_msg, #offline_msg{us = US, timestamp = TS, _ = '_'}) of
|
|
[Msg|_] ->
|
|
{ok, Msg};
|
|
_ ->
|
|
error
|
|
end.
|
|
|
|
remove_message(LUser, LServer, I) ->
|
|
US = {LUser, LServer},
|
|
TS = integer_to_now(I),
|
|
case mnesia:dirty_match_object(
|
|
offline_msg, #offline_msg{us = US, timestamp = TS, _ = '_'}) of
|
|
[] ->
|
|
{error, notfound};
|
|
Msgs ->
|
|
lists:foreach(
|
|
fun(Msg) ->
|
|
mnesia:dirty_delete_object(Msg)
|
|
end, Msgs)
|
|
end.
|
|
|
|
read_all_messages(LUser, LServer) ->
|
|
US = {LUser, LServer},
|
|
lists:keysort(#offline_msg.timestamp,
|
|
mnesia:dirty_read({offline_msg, US})).
|
|
|
|
remove_all_messages(LUser, LServer) ->
|
|
US = {LUser, LServer},
|
|
F = fun () ->
|
|
mnesia:write_lock_table(offline_msg),
|
|
lists:foreach(fun (Msg) -> mnesia:delete_object(Msg) end,
|
|
mnesia:dirty_read({offline_msg, US}))
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
count_messages(LUser, LServer) ->
|
|
US = {LUser, LServer},
|
|
F = fun () ->
|
|
count_mnesia_records(US)
|
|
end,
|
|
case catch mnesia:async_dirty(F) of
|
|
I when is_integer(I) -> I;
|
|
_ -> 0
|
|
end.
|
|
|
|
import(#offline_msg{} = Msg) ->
|
|
mnesia:dirty_write(Msg).
|
|
|
|
need_transform(#offline_msg{us = {U, S}}) when is_list(U) orelse is_list(S) ->
|
|
?INFO_MSG("Mnesia table 'offline_msg' will be converted to binary", []),
|
|
true;
|
|
need_transform(_) ->
|
|
false.
|
|
|
|
transform(#offline_msg{us = {U, S}, from = From, to = To,
|
|
packet = El} = R) ->
|
|
R#offline_msg{us = {iolist_to_binary(U), iolist_to_binary(S)},
|
|
from = jid_to_binary(From),
|
|
to = jid_to_binary(To),
|
|
packet = fxml:to_xmlel(El)}.
|
|
|
|
%%%===================================================================
|
|
%%% Internal functions
|
|
%%%===================================================================
|
|
%% Return the number of records matching a given match expression.
|
|
%% This function is intended to be used inside a Mnesia transaction.
|
|
%% The count has been written to use the fewest possible memory by
|
|
%% getting the record by small increment and by using continuation.
|
|
-define(BATCHSIZE, 100).
|
|
|
|
count_mnesia_records(US) ->
|
|
MatchExpression = #offline_msg{us = US, _ = '_'},
|
|
case mnesia:select(offline_msg, [{MatchExpression, [], [[]]}],
|
|
?BATCHSIZE, read) of
|
|
{Result, Cont} ->
|
|
Count = length(Result),
|
|
count_records_cont(Cont, Count);
|
|
'$end_of_table' ->
|
|
0
|
|
end.
|
|
|
|
count_records_cont(Cont, Count) ->
|
|
case mnesia:select(Cont) of
|
|
{Result, Cont} ->
|
|
NewCount = Count + length(Result),
|
|
count_records_cont(Cont, NewCount);
|
|
'$end_of_table' ->
|
|
Count
|
|
end.
|
|
|
|
jid_to_binary(#jid{user = U, server = S, resource = R,
|
|
luser = LU, lserver = LS, lresource = LR}) ->
|
|
#jid{user = iolist_to_binary(U),
|
|
server = iolist_to_binary(S),
|
|
resource = iolist_to_binary(R),
|
|
luser = iolist_to_binary(LU),
|
|
lserver = iolist_to_binary(LS),
|
|
lresource = iolist_to_binary(LR)}.
|
|
|
|
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}.
|