basic key get/put

apps/kv/src/kv_vnode_manager.erl

@@ -4,7 +4,8 @@
 
 -export([
     start_link/0,
-    get_vnode/1
+    get_local/2,
+    put_local/3
 ]).
 
 %%% gen_server callbacks
@@ -19,8 +20,13 @@
 start_link() ->
     gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
 
-get_vnode(Index) ->
+-spec get_local(Index :: non_neg_integer(), Key :: term()) -> {ok, Value :: term()} | none.
-    gen_server:call(?MODULE, {get_vnode, Index}).
+get_local(Index, Key) ->
+    gen_server:call(?MODULE, {get, Index, Key}).
+
+-spec put_local(Index :: non_neg_integer(), Key :: term(), Value :: term()) -> ok.
+put_local(Index, Key, Value) ->
+    gen_server:cast(?MODULE, {put, Index, Key, Value}).
 
 %%% gen_server callbacks
 
@@ -28,17 +34,23 @@ get_vnode(Index) ->
 init([]) ->
     {ok, #kv_vnode_manager{table = ets:new(?MODULE, [set])}}.
 
-handle_call({get_vnode, Index}, _From, State) ->
+handle_call({get, Index, Key}, _From, State) ->
-    Table = State#kv_vnode_manager.table,
+    VNode = get_vnode(Index, State),
-    Reply =
+    {reply, kv_vnode:get(VNode, Key), State}.
+
+handle_cast({put, Index, Key, Value}, State) ->
+    VNode = get_vnode(Index, State),
+    ok = kv_vnode:put(VNode, Key, Value),
+    {noreply, State}.
+
+%%% internal functions
+
+get_vnode(Index, #kv_vnode_manager{table = Table}) ->
     case ets:lookup(Table, Index) of
         [{_, Pid}] ->
-                {ok, Pid};
+            Pid;
         [] ->
             {ok, Pid} = kv_vnode_sup:start_vnode(Index),
             ets:insert(Table, {Index, Pid}),
-                {ok, Pid}
+            Pid
-        end,
+    end.
-    {reply, Reply, State}.
-
-handle_cast(_, _) -> error(not_implemented).