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%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 14 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_roster_riak).
-behaviour(mod_roster).
%% API
-export([init/2, read_roster_version/2, write_roster_version/4,
get_roster/2, get_roster_by_jid/3,
roster_subscribe/4, get_roster_by_jid_with_groups/3,
remove_user/2, update_roster/4, del_roster/3, transaction/2,
read_subscription_and_groups/3, get_only_items/2, import/2]).
-include("jlib.hrl").
-include("mod_roster.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
read_roster_version(LUser, LServer) ->
case ejabberd_riak:get(roster_version, roster_version_schema(),
{LUser, LServer}) of
{ok, #roster_version{version = V}} -> V;
_Err -> error
end.
write_roster_version(LUser, LServer, _InTransaction, Ver) ->
US = {LUser, LServer},
ejabberd_riak:put(#roster_version{us = US, version = Ver},
roster_version_schema()).
get_roster(LUser, LServer) ->
case ejabberd_riak:get_by_index(roster, roster_schema(),
<<"us">>, {LUser, LServer}) of
{ok, Items} -> Items;
_Err -> []
end.
get_roster_by_jid(LUser, LServer, LJID) ->
case ejabberd_riak:get(roster, roster_schema(), {LUser, LServer, LJID}) of
{ok, I} ->
I#roster{jid = LJID, name = <<"">>, groups = [], xs = []};
{error, notfound} ->
#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID};
Err ->
exit(Err)
end.
get_only_items(LUser, LServer) ->
get_roster(LUser, LServer).
roster_subscribe(LUser, LServer, _LJID, Item) ->
ejabberd_riak:put(Item, roster_schema(),
[{'2i', [{<<"us">>, {LUser, LServer}}]}]).
transaction(_LServer, F) ->
{atomic, F()}.
get_roster_by_jid_with_groups(LUser, LServer, LJID) ->
case ejabberd_riak:get(roster, roster_schema(), {LUser, LServer, LJID}) of
{ok, I} ->
I;
{error, notfound} ->
#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID};
Err ->
exit(Err)
end.
remove_user(LUser, LServer) ->
{atomic, ejabberd_riak:delete_by_index(roster, <<"us">>, {LUser, LServer})}.
update_roster(LUser, LServer, _LJID, Item) ->
ejabberd_riak:put(Item, roster_schema(),
[{'2i', [{<<"us">>, {LUser, LServer}}]}]).
del_roster(LUser, LServer, LJID) ->
ejabberd_riak:delete(roster, {LUser, LServer, LJID}).
read_subscription_and_groups(LUser, LServer, LJID) ->
case ejabberd_riak:get(roster, roster_schema(), {LUser, LServer, LJID}) of
{ok, #roster{subscription = Subscription,
groups = Groups}} ->
{Subscription, Groups};
_ ->
error
end.
import(_LServer, #roster{us = {LUser, LServer}} = R) ->
ejabberd_riak:put(R, roster_schema(),
[{'2i', [{<<"us">>, {LUser, LServer}}]}]);
import(_LServer, #roster_version{} = RV) ->
ejabberd_riak:put(RV, roster_version_schema()).
%%%===================================================================
%%% Internal functions
%%%===================================================================
roster_schema() ->
{record_info(fields, roster), #roster{}}.
roster_version_schema() ->
{record_info(fields, roster_version), #roster_version{}}.
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