Add node_health_check test suite

Author: Alexey Lebedeff

test/health_check_SUITE.erl

@@ -0,0 +1,167 @@
+%% The contents of this file are subject to the Mozilla Public License
+%% Version 1.1 (the "License"); you may not use this file except in
+%% compliance with the License. You may obtain a copy of the License
+%% at http://www.mozilla.org/MPL/
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and
+%% limitations under the License.
+%%
+%% The Original Code is RabbitMQ.
+%%
+%% The Initial Developer of the Original Code is GoPivotal, Inc.
+%% Copyright (c) 2016 Pivotal Software, Inc.  All rights reserved.
+%%
+-module(health_check_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("amqp_client/include/amqp_client.hrl").
+
+-export([all/0
+        ,groups/0
+        ,init_per_suite/1
+        ,end_per_suite/1
+        ,init_per_testcase/2
+        ,end_per_testcase/2
+        ]).
+
+-export([ignores_remote_dead_channel/1
+        ,detects_local_dead_channel/1
+        ,ignores_remote_dead_queue/1
+        ,detects_local_dead_queue/1
+        ,ignores_remote_alarms/1
+        ,detects_local_alarm/1
+        ,honors_timeout_argument/1
+        ]).
+
+all() ->
+    [{group, all_cases}].
+
+groups() ->
+    [{all_cases, [],
+      [ignores_remote_dead_queue
+      ,detects_local_dead_queue
+      ,ignores_remote_dead_channel
+      ,detects_local_dead_channel
+      ,ignores_remote_alarms
+      ,detects_local_alarm
+      ,honors_timeout_argument
+      ]}].
+
+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_testcase(Testcase, Config0) ->
+    rabbit_ct_helpers:testcase_started(Config0, Testcase),
+    Config1 = rabbit_ct_helpers:set_config(
+                Config0, [{rmq_nodes_count, 2},
+                          {rmq_nodes_clustered, true}]),
+    rabbit_ct_helpers:run_steps(Config1,
+                                rabbit_ct_broker_helpers:setup_steps() ++
+                                rabbit_ct_client_helpers:setup_steps()).
+
+end_per_testcase(Testcase, Config0) ->
+    Config1 = case rabbit_ct_helpers:get_config(Config0, save_config) of
+        undefined -> Config0;
+        C         -> C
+    end,
+    Config2 = rabbit_ct_helpers:run_steps(Config1,
+                                          rabbit_ct_broker_helpers:teardown_steps() ++
+                                          rabbit_ct_client_helpers:teardown_steps()),
+    rabbit_ct_helpers:testcase_finished(Config2, Testcase).
+
+%%----------------------------------------------------------------------------
+%% Test cases
+%%----------------------------------------------------------------------------
+ignores_remote_dead_channel(Config) ->
+    [A, B] = open_channel_and_declare_queue_everywhere(Config),
+    CPid = suspend_single_channel(Config, B),
+    {ok, _} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    resume_sys_process(Config, B, CPid),
+    ok.
+
+detects_local_dead_channel(Config) ->
+    [A|_] = open_channel_and_declare_queue_everywhere(Config),
+    CPid = suspend_single_channel(Config, A),
+    {error, 75, Str} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    {match, _} = re:run(Str, "operation node_health_check.*timed out"),
+    resume_sys_process(Config, A, CPid),
+    ok.
+
+ignores_remote_dead_queue(Config) ->
+    [A, B] = open_channel_and_declare_queue_everywhere(Config),
+    QPid = suspend_single_queue(Config, B),
+    {ok, _} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    resume_sys_process(Config, B, QPid),
+    ok.
+
+detects_local_dead_queue(Config) ->
+    [A|_] = open_channel_and_declare_queue_everywhere(Config),
+    QPid = suspend_single_queue(Config, A),
+    {error, 75, Str} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    {match, _} = re:run(Str, "operation node_health_check.*timed out"),
+    resume_sys_process(Config, A, QPid),
+    ok.
+
+ignores_remote_alarms(Config) ->
+    [A, B] = rabbit_ct_broker_helpers:get_node_configs(Config, nodename),
+    rabbit_ct_broker_helpers:rabbitmqctl(Config, B,
+                                         ["set_vm_memory_high_watermark", "0.000000001"]),
+    {ok, _} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    ok.
+
+detects_local_alarm(Config) ->
+    [A|_] = rabbit_ct_broker_helpers:get_node_configs(Config, nodename),
+    rabbit_ct_broker_helpers:rabbitmqctl(Config, A,
+                                         ["set_vm_memory_high_watermark", "0.000000001"]),
+    {error, 70, Str} = rabbit_ct_broker_helpers:rabbitmqctl(Config, A, ["-t", "5", "node_health_check"]),
+    {match, _} = re:run(Str, "resource alarm.*in effect"),
+    ok.
+
+honors_timeout_argument(Config) ->
+    [A|_] = open_channel_and_declare_queue_everywhere(Config),
+    QPid = suspend_single_queue(Config, A),
+
+    case timer:tc(rabbit_ct_broker_helpers, rabbitmqctl, [Config, A, ["-t", "5", "node_health_check"]]) of
+        {TimeSpent, {error, 75, _}} ->
+            if TimeSpent < 5000000 -> exit({too_fast, TimeSpent});
+               TimeSpent > 7000000 -> exit({too_slow, TimeSpent}); %% +2 seconds for rabbitmqctl overhead
+               true -> ok
+            end;
+        {_, Unexpected} ->
+            exit({unexpected, Unexpected})
+    end,
+    resume_sys_process(Config, A, QPid),
+    ok.
+
+%%----------------------------------------------------------------------------
+%% Helpers
+%%----------------------------------------------------------------------------
+open_channel_and_declare_queue_everywhere(Config) ->
+    Nodes = rabbit_ct_broker_helpers:get_node_configs(Config, nodename),
+    lists:foreach(fun(Node) ->
+                      Ch = rabbit_ct_client_helpers:open_channel(Config, Node),
+                      #'queue.declare_ok'{} = amqp_channel:call(Ch, #'queue.declare'{})
+                  end,
+                  Nodes),
+    Nodes.
+
+suspend_single_queue(Config, Node) ->
+    [QPid|_] = [rabbit_amqqueue:pid_of(Q) || Q <- rabbit_ct_broker_helpers:rpc(Config, Node, rabbit_amqqueue, list, []),
+                                             Node == node(rabbit_amqqueue:pid_of(Q))],
+    rabbit_ct_broker_helpers:rpc(Config, Node, sys, suspend, [QPid]),
+    QPid.
+
+suspend_single_channel(Config, Node) ->
+    [CPid|_] = [Pid || Pid <- rabbit_ct_broker_helpers:rpc(Config, Node, rabbit_channel, list_local, []),
+                       Node == node(Pid)],
+    rabbit_ct_broker_helpers:rpc(Config, Node, sys, suspend, [CPid]),
+    CPid.
+
+resume_sys_process(Config, Node, Pid) ->
+    rabbit_ct_broker_helpers:rpc(Config, Node, sys, resume, [Pid]).