wip

Author: Daniil Fedotov

src/rabbit_variable_queue.erl

@@ -2689,17 +2689,44 @@ migrate_queue(Queue, OldStore, NewStoreSup) ->
     OldStoreClient = get_old_client(OldStore),
     NewStoreClient = get_new_store_client(Queue, NewStoreSup),
     walk_queue_index(
-        fun(MessageIdInStore) ->
-            Msg = get_msg_from_store(OldStoreClient),
-            put_message_to_store(Msg, NewStoreClient)
+        fun(MessageIdInStore, OldC) ->
+            case rabbit_msg_store:read(MessageIdInStore, OldStoreClient) of
+                {{ok, Msg}, OldC1} -> 
+                    ok = rabbit_msg_store:write(MessageIdInStore, Msg, NewStoreClient),
+                    OldC1;
+                _ -> OldC
+            end
         end,
         Queue).
 
+spawn_for_each(Fun, List) ->
+    Ref = erlang:make_ref(),
+    Self = self(),
+    Processes = lists:map(
+        fun(El) ->
+            spawn_link(
+                fun() ->
+                    Fun(El),
+                    Self ! {ok, self(), Ref}
+                end)
+        end,
+        List),
+    {Ref, Processes}.
+
+wait({Ref, Processes}) ->
+    lists:foreach(
+        fun(Proc) ->
+            receive {ok, Proc, Ref} -> ok
+            end
+        end,
+        Processes).
 
 get_new_store_client(Queue, NewStoreSup) ->
     Vhost = queue_vhost(Queue),
     get_new_client(NewStoreSup, Vhost).
 
+queue_vhost(#amqqueue{name = #resource{virtual_host = VHost}}) -> VHost.
+
 get_new_client(NewStoreSup, VHost) ->
     rabbit_msg_store_vhost_sup:client_init(NewStoreSup, 
                                            rabbit_guid:gen(),
@@ -2735,7 +2762,7 @@ start_recovery_terms(Queues) ->
     {Refs, StartFunState}.
 
 run_old_persistent_store(Refs, StartFunState) ->    
-    OldStoreName = old_persistent_msg_store.
+    OldStoreName = old_persistent_msg_store,
     ok = rabbit_sup:start_child(OldStoreName, rabbit_msg_store,
                                 [OldStoreName, rabbit_mnesia:dir(),
                                  Refs, StartFunState]),
@@ -2753,3 +2780,12 @@ start_new_store_sup() ->
                                  undefined,  {fun (ok) -> finished end, ok}]),
     ?PERSISTENT_MSG_STORE.
 
+delete_old_store(OldStore) ->
+    gen_server:stop(OldStore),
+    rabbit_file:recursive_delete(
+        filename:join([rabbit_mnesia:dir(), ?PERSISTENT_MSG_STORE])).
+
+
+
+
+