/
per_node_limit_SUITE.erl
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/
per_node_limit_SUITE.erl
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%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% Copyright (c) 2007-2024 Broadcom. All Rights Reserved. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. All rights reserved.
%%
-module(per_node_limit_SUITE).
-include_lib("common_test/include/ct.hrl").
-include_lib("amqp_client/include/amqp_client.hrl").
-include_lib("eunit/include/eunit.hrl").
-compile(export_all).
all() ->
[
{group, limit_tests}
].
groups() ->
[
{limit_tests, [], [
node_connection_limit,
vhost_limit,
channel_consumers_limit,
node_channel_limit
]}
].
suite() ->
[
{timetrap, {minutes, 3}}
].
%% -------------------------------------------------------------------
%% Testsuite setup/teardown.
%% -------------------------------------------------------------------
init_per_suite(Config) ->
rabbit_ct_helpers:log_environment(),
rabbit_ct_helpers:run_setup_steps(Config).
end_per_suite(Config) ->
rabbit_ct_helpers:run_teardown_steps(Config).
init_per_group(Group, Config) ->
Config1 = rabbit_ct_helpers:set_config(Config, [
{rmq_nodename_suffix, Group},
{rmq_nodes_count, 1}
]),
rabbit_ct_helpers:run_steps(Config1,
rabbit_ct_broker_helpers:setup_steps() ++
rabbit_ct_client_helpers:setup_steps()).
end_per_group(_Group, Config) ->
rabbit_ct_helpers:run_steps(Config,
rabbit_ct_client_helpers:teardown_steps() ++
rabbit_ct_broker_helpers:teardown_steps()).
init_per_testcase(Testcase, Config) ->
rabbit_ct_helpers:testcase_started(Config, Testcase).
end_per_testcase(vhost_limit = Testcase, Config) ->
set_node_limit(Config, vhost_max, infinity),
set_node_limit(Config, channel_max_per_node, infinity),
set_node_limit(Config, consumer_max_per_channel, infinity),
set_node_limit(Config, connection_max, infinity),
[rabbit_ct_broker_helpers:delete_vhost(Config, integer_to_binary(I)) || I <- lists:seq(1,4)],
rabbit_ct_helpers:testcase_finished(Config, Testcase);
end_per_testcase(Testcase, Config) ->
set_node_limit(Config, vhost_max, infinity),
set_node_limit(Config, channel_max_per_node, infinity),
set_node_limit(Config, consumer_max_per_channel, infinity),
set_node_limit(Config, connection_max, infinity),
rabbit_ct_helpers:testcase_finished(Config, Testcase).
%% -------------------------------------------------------------------
%% Test cases
%% -------------------------------------------------------------------
node_connection_limit(Config) ->
%% Set limit to 0, don't accept any connections
set_node_limit(Config, connection_max, 0),
{error, not_allowed} = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0),
%% Set limit to 5, accept 5 connections
Connections = open_connections_to_limit(Config, 5),
%% But no more than 5
{error, not_allowed} = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0),
close_all_connections(Connections),
set_node_limit(Config, connection_max, infinity),
C = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0),
true = is_pid(C),
close_all_connections([C]),
ok.
vhost_limit(Config) ->
set_node_limit(Config, vhost_max, 0),
{'EXIT',{vhost_limit_exceeded, _}} = rabbit_ct_broker_helpers:add_vhost(Config, <<"foo">>),
set_node_limit(Config, vhost_max, 5),
[ok = rabbit_ct_broker_helpers:add_vhost(Config, integer_to_binary(I)) || I <- lists:seq(1,4)],
{'EXIT',{vhost_limit_exceeded, _}} = rabbit_ct_broker_helpers:add_vhost(Config, <<"5">>),
[rabbit_ct_broker_helpers:delete_vhost(Config, integer_to_binary(I)) || I <- lists:seq(1,4)],
set_node_limit(Config, vhost_max, infinity),
[ok = rabbit_ct_broker_helpers:add_vhost(Config, integer_to_binary(I)) || I <- lists:seq(1,4)],
ok = rabbit_ct_broker_helpers:add_vhost(Config, <<"5">>),
[rabbit_ct_broker_helpers:delete_vhost(Config, integer_to_binary(I)) || I <- lists:seq(1,5)],
ok.
node_channel_limit(Config) ->
set_node_limit(Config, channel_max_per_node, 5),
VHost = <<"node_channel_limit">>,
User = <<"guest">>,
ok = rabbit_ct_broker_helpers:add_vhost(Config, VHost),
ok = rabbit_ct_broker_helpers:set_full_permissions(Config, User, VHost),
Conn1 = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0, VHost),
Conn2 = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0, VHost),
0 = count_channels_per_node(Config),
lists:foreach(fun(N) when (N band 1) == 1 -> {ok, _} = open_channel(Conn1);
(_) -> {ok,_ } = open_channel(Conn2)
end, lists:seq(1, 5)),
5 = count_channels_per_node(Config),
%% In total 5 channels are open on this node, so a new one, regardless of
%% connection, will not be allowed. It will terminate the connection with
%% its channels too. So
{error, not_allowed_crash} = open_channel(Conn2),
3 = count_channels_per_node(Config),
%% As the connection is dead, so are the 2 channels, so we should be able to
%% create 2 more on Conn1
{ok , _} = open_channel(Conn1),
{ok , _} = open_channel(Conn1),
%% But not a third
{error, not_allowed_crash} = open_channel(Conn1),
%% Now all connections are closed, so there should be 0 open connections
0 = count_channels_per_node(Config),
close_all_connections([Conn1, Conn2]),
rabbit_ct_broker_helpers:delete_vhost(Config, VHost),
ok.
channel_consumers_limit(Config) ->
set_node_limit(Config, consumer_max_per_channel, 2),
VHost = <<"channel_consumers_limit">>,
User = <<"guest">>,
ok = rabbit_ct_broker_helpers:add_vhost(Config, VHost),
ok = rabbit_ct_broker_helpers:set_full_permissions(Config, User, VHost),
Conn1 = rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0, VHost),
{ok, Ch} = open_channel(Conn1),
Q = <<"Q">>, Tag = <<"Tag">>,
{ok, _} = consume(Ch, Q, <<"Tag1">>),
{ok, _} = consume(Ch, Q, <<"Tag2">>),
{error, not_allowed_crash} = consume(Ch, Q, <<"Tag3">>), % Third consumer should fail
close_all_connections([Conn1]),
rabbit_ct_broker_helpers:delete_vhost(Config, VHost),
ok.
%% -------------------------------------------------------------------
%% Implementation
%% -------------------------------------------------------------------
open_connections_to_limit(Config, Limit) ->
set_node_limit(Config, connection_max, Limit),
Connections = [rabbit_ct_client_helpers:open_unmanaged_connection(Config, 0) || _ <- lists:seq(1,Limit)],
true = lists:all(fun(E) -> is_pid(E) end, Connections),
Connections.
close_all_connections(Connections) ->
[rabbit_ct_client_helpers:close_connection(C) || C <- Connections].
set_node_limit(Config, Type, Limit) ->
rabbit_ct_broker_helpers:rpc(Config, 0,
application,
set_env, [rabbit, Type, Limit]).
consume(Ch, Q, Tag) ->
#'queue.declare_ok'{queue = Q} = amqp_channel:call(Ch, #'queue.declare'{queue = Q}),
try amqp_channel:call(Ch, #'basic.consume'{queue = Q, consumer_tag = Tag}) of
#'basic.consume_ok'{} = OK -> {ok, OK};
NotOk -> {error, NotOk}
catch
_:_Error -> {error, not_allowed_crash}
end.
open_channel(Conn) when is_pid(Conn) ->
try amqp_connection:open_channel(Conn) of
{ok, Ch} -> {ok, Ch};
{error, _} ->
{error, not_allowed}
catch
_:_Error -> {error, not_allowed_crash}
end.
count_channels_per_node(Config) ->
NodeConfig = rabbit_ct_broker_helpers:get_node_config(Config, 0),
rabbit_ct_broker_helpers:rpc(Config, 0,
rabbit_channel_tracking,
channel_count_on_node,
[?config(nodename, NodeConfig)]).