Clean mod_last.erl from DB specific code

1 files changed, 53 insertions, 0 deletions

diff --git a/src/mod_last_riak.erl b/src/mod_last_riak.erl
new file mode 100644
index 00000000..d25a3a15
--- /dev/null
+++ b/src/mod_last_riak.erl
@@ -0,0 +1,53 @@
+%%%-------------------------------------------------------------------
+%%% @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_last_riak).
+-behaviour(mod_last).
+
+%% API
+-export([init/2, import/2, get_last/2, store_last_info/4, remove_user/2]).
+
+-include("mod_last.hrl").
+-include("logger.hrl").
+
+%%%===================================================================
+%%% API
+%%%===================================================================
+init(_Host, _Opts) ->
+    ok.
+
+get_last(LUser, LServer) ->
+    case ejabberd_riak:get(last_activity, last_activity_schema(),
+			   {LUser, LServer}) of
+        {ok, #last_activity{timestamp = TimeStamp,
+                            status = Status}} ->
+            {ok, TimeStamp, Status};
+        {error, notfound} ->
+            not_found;
+        Err ->
+            Err
+    end.
+
+store_last_info(LUser, LServer, TimeStamp, Status) ->
+    US = {LUser, LServer},
+    {atomic, ejabberd_riak:put(#last_activity{us = US,
+                                              timestamp = TimeStamp,
+                                              status = Status},
+			       last_activity_schema())}.
+
+remove_user(LUser, LServer) ->
+    {atomic, ejabberd_riak:delete(last_activity, {LUser, LServer})}.
+
+import(_LServer, #last_activity{} = LA) ->
+    ejabberd_riak:put(LA, last_activity_schema()).
+
+%%%===================================================================
+%%% Internal functions
+%%%===================================================================
+last_activity_schema() ->
+    {record_info(fields, last_activity), #last_activity{}}.