From f1f5af64997e539716a63b555447f08fc1da2714 Mon Sep 17 00:00:00 2001
From: Aleksey Sabilin <aleksey@sabilin.com>
Date: Sun, 19 Jul 2026 13:32:38 +0300
Subject: [PATCH] fix: tolerate existing eventhub_counters ETS on infra_mnesia
 restart

Supervisor restarts after mnesia_stopped crashed on ets:new already_exists.
---
 src/infra/infra_mnesia.erl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/infra/infra_mnesia.erl b/src/infra/infra_mnesia.erl
index 915fb03..d86bd85 100644
--- a/src/infra/infra_mnesia.erl
+++ b/src/infra/infra_mnesia.erl
@@ -36,7 +36,11 @@
 
 start_link() ->
   % Счётчики для метрик (сессии, ws-соединения)
-  ets:new(eventhub_counters, [named_table, public, set, {write_concurrency, true}]),
+  case ets:info(eventhub_counters) of
+    undefined ->
+      ets:new(eventhub_counters, [named_table, public, set, {write_concurrency, true}]);
+    _ -> ok
+  end,
   gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
 
 init_tables() ->