Add cth_validate_nodes

The hook would check if MIM is running before init_per_suite
for each big test

It would check it for nodes requested by setting TEST_HOSTS variable
--one-node flag still works as expected

To disable this check use new --skip-validate-nodes flag

It is compatible with cth_surefire

big_tests/default.spec

@@ -130,13 +130,13 @@
 %% ct_mongoose_hook will:
 %% * ensure preset & mim_data_dir values are passed to ct Config
 %% * check server's purity after SUITE
-{ct_hooks, [ct_groups_summary_hook, ct_tty_hook,
+{ct_hooks, [cth_validate_nodes,
+            ct_groups_summary_hook,
+            ct_tty_hook,
             ct_mongoose_hook,
+            ct_mongoose_log_hook,
             {ct_mongoose_log_hook, [{host, mim2}, {print_init_and_done_for_testcases, false}]},
             {ct_mongoose_log_hook, [{host, mim3}, {print_init_and_done_for_testcases, false}]},
             ct_progress_hook,
-            ct_markdown_errors_hook, ct_mongoose_log_hook]}.
-
-%% since test-runner.sh can be executed with the --one-node option,
-%% log collection is enabled by default for host mim1 only.
-% {ct_hooks, [{ct_mongoose_log_hook,[{host, mim2}, {log, []}]}]}.
+            ct_markdown_errors_hook
+]}.

big_tests/dynamic_domains.spec

@@ -173,12 +173,12 @@
 %% ct_mongoose_hook will:
 %% * ensure preset & mim_data_dir values are passed to ct Config
 %% * check server's purity after SUITE
-{ct_hooks, [ct_groups_summary_hook, ct_tty_hook, ct_mongoose_hook, ct_progress_hook,
+{ct_hooks, [cth_validate_nodes,
+            ct_groups_summary_hook,
+            ct_tty_hook,
+            ct_mongoose_hook,
+            ct_progress_hook,
             ct_markdown_errors_hook,
             ct_mongoose_log_hook,
             {ct_mongoose_log_hook, [{host, mim2}, {print_init_and_done_for_testcases, false}]},
             {ct_mongoose_log_hook, [{host, mim3}, {print_init_and_done_for_testcases, false}]}]}.
-
-%% since test-runner.sh can be executed with the --one-node option,
-%% log collection is enabled by default for host mim1 only.
-% {ct_hooks, [{ct_mongoose_log_hook,[{host, mim2}, {log, []}]}]}.

big_tests/src/ct_mongoose_hook.erl

@@ -41,14 +41,16 @@ init(_Id, _Opts) ->
     {ok, #{}}.
 
 %% @doc Called before init_per_suite is called.
-pre_init_per_suite(Suite,Config,State) ->
+pre_init_per_suite(Suite, [_|_] = Config, State) ->
     Preset = case application:get_env(common_test, test_label) of
                  {ok, Value} -> Value;
                  _ -> undefined
              end,
     DataDir = path_helper:data_dir(Suite, Config),
     NewConfig = [{preset, Preset}, {mim_data_dir, DataDir} | Config],
-    {NewConfig, State}.
+    {NewConfig, State};
+pre_init_per_suite(_Suite, SkipOrFail, State) ->
+    {SkipOrFail, State}.
 
 %% @doc Called after init_per_suite.
 post_init_per_suite(_Suite, _Config, Return, State) ->

big_tests/src/cth_validate_nodes.erl

@@ -0,0 +1,35 @@
+-module(cth_validate_nodes).
+
+%% Callbacks
+-export([id/1]).
+-export([init/2]).
+
+-export([pre_init_per_suite/3]).
+-export([terminate/1]).
+
+-record(state, {}).
+
+%% CT callbacks
+
+id(_Opts) ->
+    "cth_validate_nodes_001".
+
+init(_Id, _Opts) ->
+    {ok, #state{}}.
+
+pre_init_per_suite(_Suite, Config, State) ->
+    case distributed_helper:validate_nodes() of
+        ok ->
+            {Config, State};
+        {error, Reason} ->
+            case os:getenv("SKIP_VALIDATE_NODES") of
+                "true" ->
+                    ct:pal("Skip failing with ~p in ct_check_rpc_nodes", [Reason]),
+                    {Config, State};
+                _ ->
+                    {{fail, Reason}, State}
+            end
+    end.
+
+terminate(_State) ->
+    ok.

test/common/distributed_helper.erl

@@ -39,7 +39,7 @@ add_node_to_cluster(Node, Config) ->
     end,
     Config.
 
-add_node_to_mnesia_cluster(Node, Config) ->
+add_node_to_mnesia_cluster(Node, _Config) ->
     ClusterMemberNode = maps:get(node, mim()),
     ok = rpc(Node#{timeout => cluster_op_timeout()},
              mongoose_cluster, join, [ClusterMemberNode]),
@@ -205,3 +205,33 @@ subhost_pattern(SubhostTemplate) ->
 
 lookup_config_opt(Key) ->
     rpc(mim(), mongoose_config, lookup_opt, [Key]).
+
+%% @doc Checks if MongooseIM nodes are running
+validate_nodes() ->
+    Results = [validate_node(Node) || Node <- get_node_keys()],
+    Errors = [Res || Res <- Results, Res =/= ok],
+    case Errors of
+        [] -> ok;
+        _ -> {error, Errors}
+    end.
+
+get_node_keys() ->
+    case os:getenv("TEST_HOSTS") of
+        false ->
+            [NodeKey || {NodeKey, _Opts} <- ct:get_config(hosts)];
+        EnvValue -> %% EnvValue examples are "mim" or "mim mim2"
+            BinHosts = binary:split(iolist_to_binary(EnvValue), <<" ">>, [global]),
+            [binary_to_atom(Node, utf8) || Node <- BinHosts]
+    end.
+
+validate_node(NodeKey) ->
+    Spec = #{node := Node} = rpc_spec(NodeKey),
+    try rpc(Spec, application, which_applications, []) of
+        Loaded ->
+            case lists:keymember(mongooseim, 1, Loaded) of
+                true -> ok;
+                false -> {validate_node_failed, mongooseim_not_running, Node}
+            end
+    catch error:{badrpc, Reason} ->
+        {validate_node_failed, {badrpc, Reason}, Node}
+    end.

tools/test-runner.sh

@@ -37,6 +37,7 @@ Options:
 --skip-start-nodes    -- do not start nodes before big tests
 --skip-stop-nodes     -- do not stop nodes after big tests
 --skip-setup-db       -- do not start any databases, the same as "--db --" option
+--skip-validate-nodes -- do not check if MongooseIM is running
 --no-parallel         -- run most commands in sequence
 --tls-dist            -- enable encryption between nodes in big tests
 --verbose             -- print script output
@@ -115,6 +116,9 @@ Script examples:
     Sets dev-nodes and test-hosts to empty lists
     Reruns mam_SUITE
 
+./tools/test-runner.sh --skip-small-tests --skip-start-nodes --skip-validate-nodes -- connect
+    Continues test execution even if MongooseIM is not running on all nodes
+
 ./tools/test-runner.sh --rerun-big-tests -- mam
     The same command as above
 
@@ -309,6 +313,7 @@ SELECTED_TESTS=()
 STOP_SCRIPT=false
 SKIP_DB_SETUP=false
 DB_FROM_PRESETS=true
+SKIP_VALIDATE_NODES=false
 
 # Parse command line arguments
 # Prefer arguments to env variables
@@ -353,6 +358,11 @@ case $key in
         DB_FROM_PRESETS=false
     ;;
 
+    --skip-validate-nodes)
+        shift # past argument
+        SKIP_VALIDATE_NODES=true
+    ;;
+
     # Similar how we parse --db option
     --preset)
         shift # past argument
@@ -635,6 +645,7 @@ export TESTSPEC="auto_big_tests.spec"
 export START_NODES="$START_NODES"
 export STOP_NODES="$STOP_NODES"
 export PAUSE_BEFORE_BIG_TESTS="$PAUSE_BEFORE_BIG_TESTS"
+export SKIP_VALIDATE_NODES="$SKIP_VALIDATE_NODES"
 
 # Debug printing
 echo "Variables:"
@@ -653,6 +664,7 @@ echo "    TESTSPEC=$TESTSPEC"
 echo "    TLS_DIST=$TLS_DIST"
 echo "    START_NODES=$START_NODES"
 echo "    STOP_NODES=$STOP_NODES"
+echo "    SKIP_VALIDATE_NODES=$SKIP_VALIDATE_NODES"
 echo ""