SUPPORT-9165: add wait for accumulator

backend/src/main/java/ervu_business_metrics/service/SessionResponseHolder.java

@@ -12,6 +12,8 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 import ervu_business_metrics.config.KafkaEnabledCondition;
 import ervu_business_metrics.model.sso.UserSessionInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Conditional;
 import org.springframework.stereotype.Component;
 
@@ -21,6 +23,7 @@ import org.springframework.stereotype.Component;
 @Component
 @Conditional(KafkaEnabledCondition.class)
 public class SessionResponseHolder {
+  private final Logger LOGGER = LoggerFactory.getLogger(SessionResponseHolder.class);
   private final Map<String, SessionAccumulator> sessionsMap = new ConcurrentHashMap<>();
 
   public void initIfAbsent(String requestKey, int totalExpected) {
@@ -37,9 +40,21 @@ public class SessionResponseHolder {
   public List<UserSessionInfo> awaitSessions(String requestKey, long timeout, TimeUnit unit)
       throws ExecutionException, InterruptedException, TimeoutException {
     SessionAccumulator acc = sessionsMap.get(requestKey);
+
+    long startTime = System.nanoTime();
+    LOGGER.info("Начало ожидания сессий для requestKey = {}", requestKey);
+
+    while (acc == null && (System.nanoTime() - startTime) < unit.toNanos(timeout)) {
+      LOGGER.debug("Аккумулятор для requestKey = {} еще не найден, повторная проверка", requestKey);
+      TimeUnit.MILLISECONDS.sleep(50);
+      acc = sessionsMap.get(requestKey);
+    }
+
     if (acc == null) {
+      LOGGER.error("Аккумулятор для requestKey: {} не был инициализирован за время ожидания.", requestKey);
       return List.of();
     }
+
     return acc.getFuture().get(timeout, unit);
   }