merge bug21758 into default

1 files changed, 16 insertions, 7 deletions

diff --git a/src/rabbit_amqqueue_process.erl b/src/rabbit_amqqueue_process.erl
index fe2e8509f7..c78edcfa33 100644
--- a/src/rabbit_amqqueue_process.erl
+++ b/src/rabbit_amqqueue_process.erl
@@ -321,8 +321,8 @@ handle_ch_down(DownPid, State = #q{exclusive_consumer = Holder}) ->
                     blocked_consumers = remove_consumers(
                                           ChPid, State#q.blocked_consumers)}),
             case should_auto_delete(NewState) of
-                false -> noreply(NewState);
-                true  -> {stop, normal, NewState}
+                false -> {ok, NewState};
+                true  -> {stop, NewState}
             end
     end.
 
@@ -576,10 +576,16 @@ handle_call({commit, Txn}, From, State) ->
     erase_tx(Txn),
     noreply(NewState);
 
-handle_call({notify_down, ChPid}, From, State) ->
-    %% optimisation: we reply straight away so the sender can continue
-    gen_server2:reply(From, ok),
-    handle_ch_down(ChPid, State);
+handle_call({notify_down, ChPid}, _From, State) ->
+    %% we want to do this synchronously, so that auto_deleted queues
+    %% are no longer visible by the time we send a response to the
+    %% client.  The queue is ultimately deleted in terminate/2; if we
+    %% return stop with a reply, terminate/2 will be called by
+    %% gen_server2 *before* the reply is sent.
+    case handle_ch_down(ChPid, State) of
+        {ok, NewState}   -> reply(ok, NewState);
+        {stop, NewState} -> {stop, normal, ok, NewState}
+    end;
 
 handle_call({basic_get, ChPid, NoAck}, _From,
             State = #q{q = #amqqueue{name = QName},
@@ -813,7 +819,10 @@ handle_info({'DOWN', MonitorRef, process, DownPid, _Reason},
     NewState = State#q{owner = none},
     {stop, normal, NewState};
 handle_info({'DOWN', _MonitorRef, process, DownPid, _Reason}, State) ->
-    handle_ch_down(DownPid, State);
+    case handle_ch_down(DownPid, State) of
+        {ok, NewState}   -> noreply(NewState);
+        {stop, NewState} -> {stop, normal, NewState}
+    end;
 
 handle_info(Info, State) ->
     ?LOGDEBUG("Info in queue: ~p~n", [Info]),