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test(conf): fix flaky config sync testcases 

Before the recent changes these testcases relied on the fact that
peer nodes that are part of the test cluster are started one after
the other. This is now not the case in general with `emqx_cth_cluster`,
so now we need to additionally find the "longest running node" in the
cluster before running test logic.
This commit is contained in:
Andrew Mayorov 2024-03-11 13:03:13 +01:00 committed by Thales Macedo Garitezi
parent 5c59a7fb86
commit 92088a5905
1 changed files with 12 additions and 2 deletions
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14
apps/emqx_conf/test/emqx_conf_app_SUITE.erl
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@ -64,7 +64,8 @@ t_copy_new_data_dir(Config) ->
),
%% 1. Start all nodes
[First | Rest] = Nodes = start_cluster(Cluster),
Nodes = start_cluster(Cluster),
[First | Rest] = sort_highest_uptime(Nodes),
try
NodeDataDir = erpc:call(First, emqx, data_dir, []),
File = NodeDataDir ++ "/configs/cluster.hocon",
@ -88,7 +89,8 @@ t_copy_deprecated_data_dir(Config) ->
),
%% 1. Start all nodes
[First | Rest] = Nodes = start_cluster(Cluster),
Nodes = start_cluster(Cluster),
[First | Rest] = sort_highest_uptime(Nodes),
try
NodeDataDir = erpc:call(First, emqx, data_dir, []),
File = NodeDataDir ++ "/configs/cluster-override.conf",
@ -246,3 +248,11 @@ cluster(TC, Specs, Config) ->
cluster_spec({Type, Num}) ->
{Type, list_to_atom(atom_to_list(?MODULE) ++ integer_to_list(Num))}.
sort_highest_uptime(Nodes) ->
Ranking = lists:sort([{-get_node_uptime(N), N} || N <- Nodes]),
element(2, lists:unzip(Ranking)).
get_node_uptime(Node) ->
{Milliseconds, _} = erpc:call(Node, erlang, statistics, [wall_clock]),
Milliseconds.