112 lines
3.5 KiB
Erlang
112 lines
3.5 KiB
Erlang
%%%-------------------------------------------------------------------
|
|
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%% Created : 15 Apr 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% ejabberd, Copyright (C) 2002-2019 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_riak).
|
|
-behaviour(mod_proxy65).
|
|
|
|
%% API
|
|
-export([init/0, register_stream/2, unregister_stream/1, activate_stream/4]).
|
|
|
|
-include("logger.hrl").
|
|
|
|
-record(proxy65, {sid :: binary(),
|
|
pid_t :: pid(),
|
|
pid_i :: pid() | undefined,
|
|
jid_i :: binary() | undefined}).
|
|
|
|
%%%===================================================================
|
|
%%% API
|
|
%%%===================================================================
|
|
init() ->
|
|
clean_table().
|
|
|
|
register_stream(SID, Pid) ->
|
|
case ejabberd_riak:get(proxy65, proxy65_schema(), SID) of
|
|
{error, notfound} ->
|
|
ejabberd_riak:put(#proxy65{sid = SID, pid_t = Pid},
|
|
proxy65_schema());
|
|
{ok, #proxy65{pid_i = undefined} = R} ->
|
|
ejabberd_riak:put(R#proxy65{pid_i = Pid},
|
|
proxy65_schema());
|
|
{ok, _} ->
|
|
{error, conflict};
|
|
{error, _} ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
unregister_stream(SID) ->
|
|
case ejabberd_riak:delete(proxy65, SID) of
|
|
ok -> ok;
|
|
{error, _} -> {error, db_failure}
|
|
end.
|
|
|
|
activate_stream(SID, IJID, MaxConnections, _Node) ->
|
|
try
|
|
case ejabberd_riak:get(proxy65, proxy65_schema(), SID) of
|
|
{ok, #proxy65{pid_t = TPid, pid_i = IPid,
|
|
jid_i = undefined} = R} when is_pid(IPid) ->
|
|
{ok, Num} = ejabberd_riak:count_by_index(
|
|
proxy65, <<"jid_i">>, IJID),
|
|
if Num >= MaxConnections ->
|
|
{error, {limit, IPid, TPid}};
|
|
true ->
|
|
ok = ejabberd_riak:put(
|
|
R#proxy65{jid_i = IJID},
|
|
proxy65_schema(),
|
|
[{'2i', [{<<"jid_i">>, IJID}]}]),
|
|
{ok, IPid, TPid}
|
|
end;
|
|
{ok, #proxy65{jid_i = JID}} ->
|
|
if is_binary(JID) -> {error, conflict};
|
|
true -> {error, notfound}
|
|
end;
|
|
{error, _} = Err ->
|
|
Err
|
|
end
|
|
catch _:{badmatch, {error, _}} ->
|
|
{error, db_failure}
|
|
end.
|
|
|
|
%%%===================================================================
|
|
%%% Internal functions
|
|
%%%===================================================================
|
|
proxy65_schema() ->
|
|
{record_info(fields, proxy65), #proxy65{sid = <<>>, pid_t = self()}}.
|
|
|
|
clean_table() ->
|
|
?DEBUG("Cleaning Riak 'proxy65' table...", []),
|
|
case ejabberd_riak:get(proxy65, proxy65_schema()) of
|
|
{ok, Rs} ->
|
|
lists:foreach(
|
|
fun(#proxy65{sid = SID, pid_t = TPid, pid_i = IPid}) ->
|
|
if node(TPid) == node() orelse
|
|
(is_pid(IPid) andalso node(IPid) == node()) ->
|
|
ejabberd_riak:delete(proxy65, SID);
|
|
true ->
|
|
ok
|
|
end
|
|
end, Rs);
|
|
{error, Reason} = Err ->
|
|
?ERROR_MSG("Failed to clean Riak 'proxy65' table: ~p", [Reason]),
|
|
Err
|
|
end.
|