1 files changed, 117 insertions, 0 deletions
diff --git a/src/mod_muc_riak.erl b/src/mod_muc_riak.erl
new file mode 100644
index 000000000..bc6e5959a
--- /dev/null
+++ b/src/mod_muc_riak.erl
@@ -0,0 +1,117 @@
+%%%-------------------------------------------------------------------
+%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
+%%% @copyright (C) 2016, Evgeny Khramtsov
+%%% @doc
+%%%
+%%% @end
+%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
+%%%-------------------------------------------------------------------
+-module(mod_muc_riak).
+
+-behaviour(mod_muc).
+
+%% API
+-export([init/2, import/2, store_room/4, restore_room/3, forget_room/3,
+	 can_use_nick/4, get_rooms/2, get_nick/3, set_nick/4]).
+
+-include("mod_muc.hrl").
+
+%%%===================================================================
+%%% API
+%%%===================================================================
+init(_Host, _Opts) ->
+    ok.
+
+store_room(_LServer, Host, Name, Opts) ->
+    {atomic, ejabberd_riak:put(#muc_room{name_host = {Name, Host},
+                                         opts = Opts},
+			       muc_room_schema())}.
+
+restore_room(_LServer, Host, Name) ->
+    case ejabberd_riak:get(muc_room, muc_room_schema(), {Name, Host}) of
+        {ok, #muc_room{opts = Opts}} -> Opts;
+        _ -> error
+    end.
+
+forget_room(_LServer, Host, Name) ->
+    {atomic, ejabberd_riak:delete(muc_room, {Name, Host})}.
+
+can_use_nick(LServer, Host, JID, Nick) ->
+    {LUser, LServer, _} = jid:tolower(JID),
+    LUS = {LUser, LServer},
+    case ejabberd_riak:get_by_index(muc_registered,
+				    muc_registered_schema(),
+                                    <<"nick_host">>, {Nick, Host}) of
+        {ok, []} ->
+            true;
+        {ok, [#muc_registered{us_host = {U, _Host}}]} ->
+            U == LUS;
+        {error, _} ->
+            true
+    end.
+
+get_rooms(_LServer, Host) ->
+    case ejabberd_riak:get(muc_room, muc_room_schema()) of
+        {ok, Rs} ->
+            lists:filter(
+              fun(#muc_room{name_host = {_, H}}) ->
+                      Host == H
+              end, Rs);
+        _Err ->
+            []
+    end.
+
+get_nick(LServer, Host, From) ->
+    {LUser, LServer, _} = jid:tolower(From),
+    US = {LUser, LServer},
+    case ejabberd_riak:get(muc_registered,
+			   muc_registered_schema(),
+			   {US, Host}) of
+        {ok, #muc_registered{nick = Nick}} -> Nick;
+        {error, _} -> error
+    end.
+
+set_nick(LServer, Host, From, Nick) ->
+    {LUser, LServer, _} = jid:tolower(From),
+    LUS = {LUser, LServer},
+    {atomic,
+     case Nick of
+         <<"">> ->
+             ejabberd_riak:delete(muc_registered, {LUS, Host});
+         _ ->
+             Allow = case ejabberd_riak:get_by_index(
+                            muc_registered,
+			    muc_registered_schema(),
+                            <<"nick_host">>, {Nick, Host}) of
+                         {ok, []} ->
+                             true;
+                         {ok, [#muc_registered{us_host = {U, _Host}}]} ->
+                             U == LUS;
+                         {error, _} ->
+                             false
+                     end,
+             if Allow ->
+                     ejabberd_riak:put(#muc_registered{us_host = {LUS, Host},
+                                                       nick = Nick},
+				       muc_registered_schema(),
+                                       [{'2i', [{<<"nick_host">>,
+                                                 {Nick, Host}}]}]);
+                true ->
+                     false
+             end
+     end}.
+
+import(_LServer, #muc_room{} = R) ->
+    ejabberd_riak:put(R, muc_room_schema());
+import(_LServer, #muc_registered{us_host = {_, Host}, nick = Nick} = R) ->
+    ejabberd_riak:put(R, muc_registered_schema(),
+		      [{'2i', [{<<"nick_host">>, {Nick, Host}}]}]).
+
+%%%===================================================================
+%%% Internal functions
+%%%===================================================================
+muc_room_schema() ->
+    {record_info(fields, muc_room), #muc_room{}}.
+
+muc_registered_schema() ->
+    {record_info(fields, muc_registered), #muc_registered{}}.