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authorMatthias Radestock <matthias@lshift.net>2009-01-22 21:51:39 +0000
committerMatthias Radestock <matthias@lshift.net>2009-01-22 21:51:39 +0000
commit20b6f51d2e495d89fa4cd02772785a2f003bba50 (patch)
treec21ee44925875bb06521ad2bf01ad0f2de5a2300
parent8b9db9c0f50f03ddc794fa9b21ffaacdb70f7563 (diff)
downloadrabbitmq-server-20b6f51d2e495d89fa4cd02772785a2f003bba50.tar.gz
prefix all mnesia table names with 'rabbit_'
and - get rid of plurals in table names - change rabbit_amqqueue to rabbit_queue - put table attributes in more sensible order
-rw-r--r--src/rabbit_access_control.erl35
-rw-r--r--src/rabbit_amqqueue.erl24
-rw-r--r--src/rabbit_exchange.erl75
-rw-r--r--src/rabbit_misc.erl4
-rw-r--r--src/rabbit_mnesia.erl70
-rw-r--r--src/rabbit_networking.erl10
6 files changed, 122 insertions, 96 deletions
diff --git a/src/rabbit_access_control.erl b/src/rabbit_access_control.erl
index 10d721f2..883425d0 100644
--- a/src/rabbit_access_control.erl
+++ b/src/rabbit_access_control.erl
@@ -117,7 +117,7 @@ internal_lookup_vhost_access(Username, VHostPath) ->
%% TODO: use dirty ops instead
rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:read({user_permission,
+ case mnesia:read({rabbit_user_permission,
#user_vhost{username = Username,
virtual_host = VHostPath}}) of
[] -> not_found;
@@ -149,7 +149,7 @@ check_resource_access(_Username,
check_resource_access(Username,
R = #resource{virtual_host = VHostPath, name = Name},
Permission) ->
- Res = case mnesia:dirty_read({user_permission,
+ Res = case mnesia:dirty_read({rabbit_user_permission,
#user_vhost{username = Username,
virtual_host = VHostPath}}) of
[] ->
@@ -171,9 +171,9 @@ check_resource_access(Username,
add_user(Username, Password) ->
R = rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:read({user, Username}) of
+ case mnesia:read({rabbit_user, Username}) of
[] ->
- ok = mnesia:write(user,
+ ok = mnesia:write(rabbit_user,
#user{username = Username,
password = Password},
write);
@@ -189,10 +189,11 @@ delete_user(Username) ->
rabbit_misc:with_user(
Username,
fun () ->
- ok = mnesia:delete({user, Username}),
- [ok = mnesia:delete_object(user_permissions, R, write) ||
+ ok = mnesia:delete({rabbit_user, Username}),
+ [ok = mnesia:delete_object(
+ rabbit_user_permissions, R, write) ||
R <- mnesia:match_object(
- user_permission,
+ rabbit_user_permission,
#user_permission{user_vhost = #user_vhost{
username = Username,
virtual_host = '_'},
@@ -208,7 +209,7 @@ change_password(Username, Password) ->
rabbit_misc:with_user(
Username,
fun () ->
- ok = mnesia:write(user,
+ ok = mnesia:write(rabbit_user,
#user{username = Username,
password = Password},
write)
@@ -217,17 +218,17 @@ change_password(Username, Password) ->
R.
list_users() ->
- mnesia:dirty_all_keys(user).
+ mnesia:dirty_all_keys(rabbit_user).
lookup_user(Username) ->
- rabbit_misc:dirty_read({user, Username}).
+ rabbit_misc:dirty_read({rabbit_user, Username}).
add_vhost(VHostPath) ->
R = rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:read({vhost, VHostPath}) of
+ case mnesia:read({rabbit_vhost, VHostPath}) of
[] ->
- ok = mnesia:write(vhost,
+ ok = mnesia:write(rabbit_vhost,
#vhost{virtual_host = VHostPath},
write),
[rabbit_exchange:declare(
@@ -275,11 +276,11 @@ internal_delete_vhost(VHostPath) ->
ok = clear_permissions(Username, VHostPath)
end,
list_vhost_permissions(VHostPath)),
- ok = mnesia:delete({vhost, VHostPath}),
+ ok = mnesia:delete({rabbit_vhost, VHostPath}),
ok.
list_vhosts() ->
- mnesia:dirty_all_keys(vhost).
+ mnesia:dirty_all_keys(rabbit_vhost).
validate_regexp(RegexpBin) ->
Regexp = binary_to_list(RegexpBin),
@@ -295,7 +296,7 @@ set_permissions(Username, VHostPath, ConfigurationPerm, MessagingPerm) ->
rabbit_misc:with_user_and_vhost(
Username, VHostPath,
fun () -> ok = mnesia:write(
- user_permission,
+ rabbit_user_permission,
#user_permission{user_vhost = #user_vhost{
username = Username,
virtual_host = VHostPath},
@@ -310,7 +311,7 @@ clear_permissions(Username, VHostPath) ->
rabbit_misc:with_user_and_vhost(
Username, VHostPath,
fun () ->
- ok = mnesia:delete({user_permission,
+ ok = mnesia:delete({rabbit_user_permission,
#user_vhost{username = Username,
virtual_host = VHostPath}})
end)).
@@ -339,7 +340,7 @@ list_permissions(QueryThunk) ->
match_user_vhost(Username, VHostPath) ->
fun () -> mnesia:match_object(
- user_permission,
+ rabbit_user_permission,
#user_permission{user_vhost = #user_vhost{
username = Username,
virtual_host = VHostPath},
diff --git a/src/rabbit_amqqueue.erl b/src/rabbit_amqqueue.erl
index 025571df..3018582f 100644
--- a/src/rabbit_amqqueue.erl
+++ b/src/rabbit_amqqueue.erl
@@ -128,7 +128,7 @@ recover_durable_queues() ->
R = rabbit_misc:execute_mnesia_transaction(
fun () ->
qlc:e(qlc:q([Q || Q = #amqqueue{pid = Pid}
- <- mnesia:table(durable_queues),
+ <- mnesia:table(rabbit_durable_queue),
node(Pid) == Node]))
end),
Queues = lists:map(fun start_queue_process/1, R),
@@ -146,7 +146,7 @@ declare(QueueName, Durable, AutoDelete, Args) ->
pid = none}),
case rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:wread({amqqueue, QueueName}) of
+ case mnesia:wread({rabbit_queue, QueueName}) of
[] -> ok = store_queue(Q),
ok = add_default_binding(Q),
Q;
@@ -159,11 +159,11 @@ declare(QueueName, Durable, AutoDelete, Args) ->
end.
store_queue(Q = #amqqueue{durable = true}) ->
- ok = mnesia:write(durable_queues, Q, write),
- ok = mnesia:write(amqqueue, Q, write),
+ ok = mnesia:write(rabbit_durable_queue, Q, write),
+ ok = mnesia:write(rabbit_queue, Q, write),
ok;
store_queue(Q = #amqqueue{durable = false}) ->
- ok = mnesia:write(amqqueue, Q, write),
+ ok = mnesia:write(rabbit_queue, Q, write),
ok.
start_queue_process(Q) ->
@@ -177,7 +177,7 @@ add_default_binding(#amqqueue{name = QueueName}) ->
ok.
lookup(Name) ->
- rabbit_misc:dirty_read({amqqueue, Name}).
+ rabbit_misc:dirty_read({rabbit_queue, Name}).
with(Name, F, E) ->
case lookup(Name) of
@@ -194,7 +194,7 @@ with_or_die(Name, F) ->
list(VHostPath) ->
mnesia:dirty_match_object(
- amqqueue,
+ rabbit_queue,
#amqqueue{name = rabbit_misc:r(VHostPath, queue), _ = '_'}).
map(VHostPath, F) -> rabbit_misc:filter_exit_map(F, list(VHostPath)).
@@ -215,7 +215,7 @@ info_all(VHostPath, Items) -> map(VHostPath, fun (Q) -> info(Q, Items) end).
stat(#amqqueue{pid = QPid}) -> gen_server2:call(QPid, stat).
stat_all() ->
- lists:map(fun stat/1, rabbit_misc:dirty_read_all(amqqueue)).
+ lists:map(fun stat/1, rabbit_misc:dirty_read_all(rabbit_queue)).
delete(#amqqueue{ pid = QPid }, IfUnused, IfEmpty) ->
gen_server2:call(QPid, {delete, IfUnused, IfEmpty}).
@@ -291,18 +291,18 @@ unblock(QPid, ChPid) ->
internal_delete(QueueName) ->
rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:wread({amqqueue, QueueName}) of
+ case mnesia:wread({rabbit_queue, QueueName}) of
[] -> {error, not_found};
[Q] ->
ok = delete_queue(Q),
- ok = mnesia:delete({durable_queues, QueueName}),
+ ok = mnesia:delete({rabbit_durable_queue, QueueName}),
ok
end
end).
delete_queue(#amqqueue{name = QueueName}) ->
ok = rabbit_exchange:delete_bindings_for_queue(QueueName),
- ok = mnesia:delete({amqqueue, QueueName}),
+ ok = mnesia:delete({rabbit_queue, QueueName}),
ok.
on_node_down(Node) ->
@@ -312,7 +312,7 @@ on_node_down(Node) ->
fun (Q, Acc) -> ok = delete_queue(Q), Acc end,
ok,
qlc:q([Q || Q = #amqqueue{pid = Pid}
- <- mnesia:table(amqqueue),
+ <- mnesia:table(rabbit_queue),
node(Pid) == Node]))
end).
diff --git a/src/rabbit_exchange.erl b/src/rabbit_exchange.erl
index c97b4adc..b04a5b37 100644
--- a/src/rabbit_exchange.erl
+++ b/src/rabbit_exchange.erl
@@ -107,16 +107,18 @@ recover() ->
fun () ->
mnesia:foldl(
fun (Exchange, Acc) ->
- ok = mnesia:write(exchange, Exchange, write),
+ ok = mnesia:write(rabbit_exchange, Exchange, write),
Acc
- end, ok, durable_exchanges),
+ end, ok, rabbit_durable_exchange),
mnesia:foldl(
fun (Route, Acc) ->
{_, ReverseRoute} = route_with_reverse(Route),
- ok = mnesia:write(route, Route, write),
- ok = mnesia:write(reverse_route, ReverseRoute, write),
+ ok = mnesia:write(rabbit_route,
+ Route, write),
+ ok = mnesia:write(rabbit_reverse_route,
+ ReverseRoute, write),
Acc
- end, ok, durable_routes),
+ end, ok, rabbit_durable_route),
ok
end).
@@ -128,11 +130,11 @@ declare(ExchangeName, Type, Durable, AutoDelete, Args) ->
arguments = Args},
rabbit_misc:execute_mnesia_transaction(
fun () ->
- case mnesia:wread({exchange, ExchangeName}) of
- [] -> ok = mnesia:write(exchange, Exchange, write),
+ case mnesia:wread({rabbit_exchange, ExchangeName}) of
+ [] -> ok = mnesia:write(rabbit_exchange, Exchange, write),
if Durable ->
- ok = mnesia:write(
- durable_exchanges, Exchange, write);
+ ok = mnesia:write(rabbit_durable_exchange,
+ Exchange, write);
true -> ok
end,
Exchange;
@@ -161,7 +163,7 @@ assert_type(#exchange{ name = Name, type = ActualType }, RequiredType) ->
[rabbit_misc:rs(Name), ActualType, RequiredType]).
lookup(Name) ->
- rabbit_misc:dirty_read({exchange, Name}).
+ rabbit_misc:dirty_read({rabbit_exchange, Name}).
lookup_or_die(Name) ->
case lookup(Name) of
@@ -173,7 +175,7 @@ lookup_or_die(Name) ->
list(VHostPath) ->
mnesia:dirty_match_object(
- exchange,
+ rabbit_exchange,
#exchange{name = rabbit_misc:r(VHostPath, exchange), _ = '_'}).
map(VHostPath, F) ->
@@ -260,7 +262,7 @@ match_bindings(#exchange{name = Name}, Match) ->
Query = qlc:q([QName || #route{binding = Binding = #binding{
exchange_name = ExchangeName,
queue_name = QName}} <-
- mnesia:table(route),
+ mnesia:table(rabbit_route),
ExchangeName == Name,
Match(Binding)]),
lookup_qpids(
@@ -272,7 +274,7 @@ match_bindings(#exchange{name = Name}, Match) ->
[QName || #route{binding = Binding = #binding{
queue_name = QName}} <-
mnesia:dirty_match_object(
- route,
+ rabbit_route,
#route{binding = #binding{exchange_name = Name,
_ = '_'}}),
Match(Binding)]
@@ -283,12 +285,12 @@ match_routing_key(#exchange{name = Name}, RoutingKey) ->
queue_name = '$1',
key = RoutingKey,
_ = '_'}},
- lookup_qpids(mnesia:dirty_select(route, [{MatchHead, [], ['$1']}])).
+ lookup_qpids(mnesia:dirty_select(rabbit_route, [{MatchHead, [], ['$1']}])).
lookup_qpids(Queues) ->
sets:fold(
fun(Key, Acc) ->
- case mnesia:dirty_read({amqqueue, Key}) of
+ case mnesia:dirty_read({rabbit_queue, Key}) of
[#amqqueue{pid = QPid}] -> [QPid | Acc];
[] -> Acc
end
@@ -300,10 +302,11 @@ lookup_qpids(Queues) ->
delete_bindings_for_exchange(ExchangeName) ->
[begin
- ok = mnesia:delete_object(reverse_route, reverse_route(Route), write),
+ ok = mnesia:delete_object(rabbit_reverse_route,
+ reverse_route(Route), write),
ok = delete_forward_routes(Route)
end || Route <- mnesia:match_object(
- route,
+ rabbit_route,
#route{binding = #binding{exchange_name = ExchangeName,
_ = '_'}},
read)],
@@ -313,22 +316,22 @@ delete_bindings_for_queue(QueueName) ->
Exchanges = exchanges_for_queue(QueueName),
[begin
ok = delete_forward_routes(reverse_route(Route)),
- ok = mnesia:delete_object(reverse_route, Route, write)
+ ok = mnesia:delete_object(rabbit_reverse_route, Route, write)
end || Route <- mnesia:match_object(
- reverse_route,
+ rabbit_reverse_route,
reverse_route(
#route{binding = #binding{queue_name = QueueName,
_ = '_'}}),
write)],
[begin
- [X] = mnesia:read({exchange, ExchangeName}),
+ [X] = mnesia:read({rabbit_exchange, ExchangeName}),
ok = maybe_auto_delete(X)
end || ExchangeName <- Exchanges],
ok.
delete_forward_routes(Route) ->
- ok = mnesia:delete_object(route, Route, write),
- ok = mnesia:delete_object(durable_routes, Route, write).
+ ok = mnesia:delete_object(rabbit_route, Route, write),
+ ok = mnesia:delete_object(rabbit_durable_route, Route, write).
exchanges_for_queue(QueueName) ->
MatchHead = reverse_route(
@@ -337,17 +340,18 @@ exchanges_for_queue(QueueName) ->
_ = '_'}}),
sets:to_list(
sets:from_list(
- mnesia:select(reverse_route, [{MatchHead, [], ['$1']}]))).
+ mnesia:select(rabbit_reverse_route, [{MatchHead, [], ['$1']}]))).
has_bindings(ExchangeName) ->
MatchHead = #route{binding = #binding{exchange_name = ExchangeName,
_ = '_'}},
try
- continue(mnesia:select(route, [{MatchHead, [], ['$_']}], 1, read))
+ continue(mnesia:select(rabbit_route, [{MatchHead, [], ['$_']}],
+ 1, read))
catch exit:{aborted, {badarg, _}} ->
%% work around OTP-7025, which was fixed in R12B-1, by
%% falling back on a less efficient method
- case mnesia:match_object(route, MatchHead, read) of
+ case mnesia:match_object(rabbit_route, MatchHead, read) of
[] -> false;
[_|_] -> true
end
@@ -359,7 +363,7 @@ continue({[], Continuation}) -> continue(mnesia:select(Continuation)).
call_with_exchange(Exchange, Fun) ->
rabbit_misc:execute_mnesia_transaction(
- fun() -> case mnesia:read({exchange, Exchange}) of
+ fun() -> case mnesia:read({rabbit_exchange, Exchange}) of
[] -> {error, exchange_not_found};
[X] -> Fun(X)
end
@@ -368,7 +372,7 @@ call_with_exchange(Exchange, Fun) ->
call_with_exchange_and_queue(Exchange, Queue, Fun) ->
call_with_exchange(
Exchange,
- fun(X) -> case mnesia:read({amqqueue, Queue}) of
+ fun(X) -> case mnesia:read({rabbit_queue, Queue}) of
[] -> {error, queue_not_found};
[Q] -> Fun(X, Q)
end
@@ -402,12 +406,13 @@ sync_binding(ExchangeName, QueueName, RoutingKey, Arguments, Durable, Fun) ->
key = RoutingKey,
args = sort_arguments(Arguments)},
ok = case Durable of
- true -> Fun(durable_routes, #route{binding = Binding}, write);
+ true -> Fun(rabbit_durable_route,
+ #route{binding = Binding}, write);
false -> ok
end,
{Route, ReverseRoute} = route_with_reverse(Binding),
- ok = Fun(route, Route, write),
- ok = Fun(reverse_route, ReverseRoute, write),
+ ok = Fun(rabbit_route, Route, write),
+ ok = Fun(rabbit_reverse_route, ReverseRoute, write),
ok.
list_bindings(VHostPath) ->
@@ -418,7 +423,7 @@ list_bindings(VHostPath) ->
queue_name = QueueName,
args = Arguments}}
<- mnesia:dirty_match_object(
- route,
+ rabbit_route,
#route{binding = #binding{
exchange_name = rabbit_misc:r(VHostPath, exchange),
_ = '_'},
@@ -561,8 +566,8 @@ conditional_delete(Exchange = #exchange{name = ExchangeName}) ->
unconditional_delete(#exchange{name = ExchangeName}) ->
ok = delete_bindings_for_exchange(ExchangeName),
- ok = mnesia:delete({durable_exchanges, ExchangeName}),
- ok = mnesia:delete({exchange, ExchangeName}).
+ ok = mnesia:delete({rabbit_durable_exchange, ExchangeName}),
+ ok = mnesia:delete({rabbit_exchange, ExchangeName}).
%%----------------------------------------------------------------------------
%% EXTENDED API
@@ -578,7 +583,7 @@ list_exchange_bindings(ExchangeName) ->
#route{binding = #binding{queue_name = QueueName,
key = RoutingKey,
args = Arguments}}
- <- mnesia:dirty_match_object(route, Route)].
+ <- mnesia:dirty_match_object(rabbit_route, Route)].
% Refactoring is left as an exercise for the reader
list_queue_bindings(QueueName) ->
@@ -588,4 +593,4 @@ list_queue_bindings(QueueName) ->
#route{binding = #binding{exchange_name = ExchangeName,
key = RoutingKey,
args = Arguments}}
- <- mnesia:dirty_match_object(route, Route)].
+ <- mnesia:dirty_match_object(rabbit_route, Route)].
diff --git a/src/rabbit_misc.erl b/src/rabbit_misc.erl
index 85db50d7..214c9528 100644
--- a/src/rabbit_misc.erl
+++ b/src/rabbit_misc.erl
@@ -237,7 +237,7 @@ filter_exit_map(F, L) ->
with_user(Username, Thunk) ->
fun () ->
- case mnesia:read({user, Username}) of
+ case mnesia:read({rabbit_user, Username}) of
[] ->
mnesia:abort({no_such_user, Username});
[_U] ->
@@ -247,7 +247,7 @@ with_user(Username, Thunk) ->
with_vhost(VHostPath, Thunk) ->
fun () ->
- case mnesia:read({vhost, VHostPath}) of
+ case mnesia:read({rabbit_vhost, VHostPath}) of
[] ->
mnesia:abort({no_such_vhost, VHostPath});
[_V] ->
diff --git a/src/rabbit_mnesia.erl b/src/rabbit_mnesia.erl
index b7f3dd0a..c0bf3d25 100644
--- a/src/rabbit_mnesia.erl
+++ b/src/rabbit_mnesia.erl
@@ -100,31 +100,51 @@ force_reset() -> reset(true).
%%--------------------------------------------------------------------
table_definitions() ->
- [{user, [{disc_copies, [node()]},
- {attributes, record_info(fields, user)}]},
- {user_permission, [{disc_copies, [node()]},
- {attributes, record_info(fields, user_permission)}]},
- {vhost, [{disc_copies, [node()]},
- {attributes, record_info(fields, vhost)}]},
- {rabbit_config, [{disc_copies, [node()]}]},
- {listener, [{type, bag},
- {attributes, record_info(fields, listener)}]},
- {durable_routes, [{disc_copies, [node()]},
- {record_name, route},
- {attributes, record_info(fields, route)}]},
- {route, [{type, ordered_set},
- {attributes, record_info(fields, route)}]},
- {reverse_route, [{type, ordered_set},
- {attributes, record_info(fields, reverse_route)}]},
- {durable_exchanges, [{disc_copies, [node()]},
- {record_name, exchange},
- {attributes, record_info(fields, exchange)}]},
- {exchange, [{attributes, record_info(fields, exchange)}]},
- {durable_queues, [{disc_copies, [node()]},
- {record_name, amqqueue},
- {attributes, record_info(fields, amqqueue)}]},
- {amqqueue, [{attributes, record_info(fields, amqqueue)},
- {index, [pid]}]}].
+ [{rabbit_user,
+ [{record_name, user},
+ {attributes, record_info(fields, user)},
+ {disc_copies, [node()]}]},
+ {rabbit_user_permission,
+ [{record_name, user_permission},
+ {attributes, record_info(fields, user_permission)},
+ {disc_copies, [node()]}]},
+ {rabbit_vhost,
+ [{record_name, vhost},
+ {attributes, record_info(fields, vhost)},
+ {disc_copies, [node()]}]},
+ {rabbit_config,
+ [{disc_copies, [node()]}]},
+ {rabbit_listener,
+ [{record_name, listener},
+ {attributes, record_info(fields, listener)},
+ {type, bag}]},
+ {rabbit_durable_route,
+ [{record_name, route},
+ {attributes, record_info(fields, route)},
+ {disc_copies, [node()]}]},
+ {rabbit_route,
+ [{record_name, route},
+ {attributes, record_info(fields, route)},
+ {type, ordered_set}]},
+ {rabbit_reverse_route,
+ [{record_name, reverse_route},
+ {attributes, record_info(fields, reverse_route)},
+ {type, ordered_set}]},
+ {rabbit_durable_exchange,
+ [{record_name, exchange},
+ {attributes, record_info(fields, exchange)},
+ {disc_copies, [node()]}]},
+ {rabbit_exchange,
+ [{record_name, exchange},
+ {attributes, record_info(fields, exchange)}]},
+ {rabbit_durable_queue,
+ [{record_name, amqqueue},
+ {attributes, record_info(fields, amqqueue)},
+ {disc_copies, [node()]}]},
+ {rabbit_queue,
+ [{record_name, amqqueue},
+ {attributes, record_info(fields, amqqueue)},
+ {index, [pid]}]}].
table_names() ->
[Tab || {Tab, _} <- table_definitions()].
diff --git a/src/rabbit_networking.erl b/src/rabbit_networking.erl
index 81c40a31..2dbd5a5a 100644
--- a/src/rabbit_networking.erl
+++ b/src/rabbit_networking.erl
@@ -123,7 +123,7 @@ stop_tcp_listener(Host, Port) ->
tcp_listener_started(IPAddress, Port) ->
ok = mnesia:dirty_write(
- listener,
+ rabbit_listener,
#listener{node = node(),
protocol = tcp,
host = tcp_host(IPAddress),
@@ -131,20 +131,20 @@ tcp_listener_started(IPAddress, Port) ->
tcp_listener_stopped(IPAddress, Port) ->
ok = mnesia:dirty_delete_object(
- listener,
+ rabbit_listener,
#listener{node = node(),
protocol = tcp,
host = tcp_host(IPAddress),
port = Port}).
active_listeners() ->
- rabbit_misc:dirty_read_all(listener).
+ rabbit_misc:dirty_read_all(rabbit_listener).
node_listeners(Node) ->
- mnesia:dirty_read(listener, Node).
+ mnesia:dirty_read(rabbit_listener, Node).
on_node_down(Node) ->
- ok = mnesia:dirty_delete(listener, Node).
+ ok = mnesia:dirty_delete(rabbit_listener, Node).
start_client(Sock) ->
{ok, Child} = supervisor:start_child(rabbit_tcp_client_sup, []),