fix: alarm 문제 수정

monicar-control-center/src/main/java/org/controlcenter/alarm/application/AlarmService.java

@@ -36,6 +36,10 @@ public class AlarmService {
 	private final VehicleRepository vehicleRepository;
 	private final ManagerRepository managerRepository;
 
+	public Map<String, SseEmitter> getSseEmitters() {
+		return sseEmitters;
+	}
+
 	/**
 	 * 특정 userId가 SSE 구독을 시작할 때 호출.
 	 */

monicar-control-center/src/main/java/org/controlcenter/alarm/infrastructure/jpa/AlarmJpaRepository.java

@@ -1,6 +1,5 @@
 package org.controlcenter.alarm.infrastructure.jpa;
 
-import java.util.List;
 import java.util.Optional;
 
 import org.controlcenter.alarm.domain.AlarmInfo;
@@ -35,6 +34,7 @@ Page<AlarmInfo> findAlarmListByStatus(@Param("status") AlarmStatus status,
 		        SUM(CASE WHEN a.status = 'COMPLETED' THEN 1 ELSE 0 END)
 		    )
 		    FROM alarm a
+				    WHERE a.isChecked = FALSE
 		""")
 	AlarmStatusStats findStatusCounts();
 }

monicar-control-center/src/main/java/org/controlcenter/common/scheduler/SseHeartbeatScheduler.java

@@ -0,0 +1,32 @@
+package org.controlcenter.common.scheduler;
+
+import java.io.IOException;
+
+import lombok.RequiredArgsConstructor;
+
+import org.controlcenter.alarm.application.AlarmService;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
+
+@Component
+@RequiredArgsConstructor
+public class SseHeartbeatScheduler {
+	private final AlarmService alarmService;
+
+	@Scheduled(fixedRate = 15000)
+	public void sendHeartbeat() {
+		var emitters = alarmService.getSseEmitters();
+		emitters.forEach((userId, emitter) -> {
+			try {
+				emitter.send(SseEmitter.event()
+					.name("ping")
+					.data("ping"));
+			} catch (IOException e) {
+				emitter.complete();
+				emitters.remove(userId);
+			}
+		});
+	}
+}
+