feat(monitoring): 마지막 수집 완료일시 모니터링 기능 추가

- GET /api/batch/last-collections API 엔드포인트 추가
- BatchLastExecution 엔티티에 apiDesc 컬럼 추가
- 재수집 이력 페이지에 마지막 수집 완료일시 토글 패널 추가
  - 상태 요약 바 (정상/주의/경고 건수)
  - API별 테이블 (성공일시, 경과시간, 상태 뱃지)
- /monitoring SPA 라우트 추가

Closes #17

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/api/batchApi.ts

@@ -324,6 +324,16 @@ export interface CollectionPeriodDto {
   rangeToDate: string | null;
 }
 
+// ── Last Collection Status ───────────────────────────────────
+
+export interface LastCollectionStatusDto {
+  apiKey: string;
+  apiDesc: string | null;
+  lastSuccessDate: string | null;
+  updatedAt: string | null;
+  elapsedMinutes: number;
+}
+
 // ── API Functions ────────────────────────────────────────────
 
 export const batchApi = {
@@ -475,4 +485,8 @@ export const batchApi = {
 
   updateCollectionPeriod: (apiKey: string, body: { rangeFromDate: string; rangeToDate: string }) =>
     postJson<{ success: boolean; message: string }>(`${BASE}/collection-periods/${apiKey}/update`, body),
+
+  // Last Collection Status
+  getLastCollectionStatuses: () =>
+    fetchJson<LastCollectionStatusDto[]>(`${BASE}/last-collections`),
 };

frontend/src/pages/Recollects.tsx

@@ -5,6 +5,7 @@ import {
     type RecollectionHistoryDto,
     type RecollectionSearchResponse,
     type CollectionPeriodDto,
+    type LastCollectionStatusDto,
 } from '../api/batchApi';
 import { formatDateTime, formatDuration } from '../utils/formatters';
 import { usePoller } from '../hooks/usePoller';
@@ -51,6 +52,47 @@ interface PeriodEdit {
     toTime: string;
 }
 
+// ── 수집 상태 임계값 (분 단위) ────────────────────────────────
+const THRESHOLD_WARN_MINUTES = 24 * 60;   // 24시간
+const THRESHOLD_DANGER_MINUTES = 48 * 60; // 48시간
+
+type CollectionStatusLevel = 'normal' | 'warn' | 'danger';
+
+function getStatusLevel(elapsedMinutes: number): CollectionStatusLevel {
+    if (elapsedMinutes < 0) return 'danger';
+    if (elapsedMinutes <= THRESHOLD_WARN_MINUTES) return 'normal';
+    if (elapsedMinutes <= THRESHOLD_DANGER_MINUTES) return 'warn';
+    return 'danger';
+}
+
+function getStatusLabel(level: CollectionStatusLevel): string {
+    if (level === 'normal') return '정상';
+    if (level === 'warn') return '주의';
+    return '경고';
+}
+
+function getStatusColor(level: CollectionStatusLevel): string {
+    if (level === 'normal') return 'text-green-500';
+    if (level === 'warn') return 'text-yellow-500';
+    return 'text-red-500';
+}
+
+function getStatusBgColor(level: CollectionStatusLevel): string {
+    if (level === 'normal') return 'bg-green-500/10 text-green-600 dark:text-green-400';
+    if (level === 'warn') return 'bg-yellow-500/10 text-yellow-600 dark:text-yellow-400';
+    return 'bg-red-500/10 text-red-600 dark:text-red-400';
+}
+
+function formatElapsed(minutes: number): string {
+    if (minutes < 0) return '-';
+    if (minutes < 60) return `${minutes}분 전`;
+    const hours = Math.floor(minutes / 60);
+    if (hours < 24) return `${hours}시간 ${minutes % 60}분 전`;
+    const days = Math.floor(hours / 24);
+    const remainHours = hours % 24;
+    return remainHours > 0 ? `${days}일 ${remainHours}시간 전` : `${days}일 전`;
+}
+
 /** 기간 프리셋 정의 (시간 단위) */
 const DURATION_PRESETS = [
     { label: '6시간', hours: 6 },
@@ -79,6 +121,9 @@ function addHoursToDateTime(
 export default function Recollects() {
     const navigate = useNavigate();
     const { showToast } = useToastContext();
+    const [lastCollectionStatuses, setLastCollectionStatuses] = useState<LastCollectionStatusDto[]>([]);
+    const [lastCollectionPanelOpen, setLastCollectionPanelOpen] = useState(false);
+
     const [periods, setPeriods] = useState<CollectionPeriodDto[]>([]);
     const [histories, setHistories] = useState<RecollectionHistoryDto[]>([]);
     const [selectedApiKey, setSelectedApiKey] = useState('');
@@ -228,6 +273,15 @@ export default function Recollects() {
         }
     };
 
+    const loadLastCollectionStatuses = useCallback(async () => {
+        try {
+            const data = await batchApi.getLastCollectionStatuses();
+            setLastCollectionStatuses(data);
+        } catch {
+            /* 수집 성공일시 로드 실패 무시 */
+        }
+    }, []);
+
     const loadPeriods = useCallback(async () => {
         try {
             const data = await batchApi.getCollectionPeriods();
@@ -270,9 +324,21 @@ export default function Recollects() {
         }
     }, [selectedApiKey, statusFilter, startDate, endDate, useSearch, page]);
 
+    usePoller(loadLastCollectionStatuses, 60_000, []);
     usePoller(loadPeriods, 60_000, []);
     usePoller(loadHistories, POLLING_INTERVAL_MS, [selectedApiKey, statusFilter, useSearch, page]);
 
+    const collectionStatusSummary = useMemo(() => {
+        let normal = 0, warn = 0, danger = 0;
+        for (const s of lastCollectionStatuses) {
+            const level = getStatusLevel(s.elapsedMinutes);
+            if (level === 'normal') normal++;
+            else if (level === 'warn') warn++;
+            else danger++;
+        }
+        return { normal, warn, danger, total: lastCollectionStatuses.length };
+    }, [lastCollectionStatuses]);
+
     const filteredHistories = useMemo(() => {
         if (useSearch) return histories;
         if (statusFilter === 'ALL') return histories;
@@ -316,6 +382,115 @@ export default function Recollects() {
                 </p>
             </div>
 
+            {/* 마지막 수집 성공일시 패널 */}
+            <div className="bg-wing-surface rounded-xl shadow-md">
+                <button
+                    onClick={() => setLastCollectionPanelOpen((v) => !v)}
+                    className="w-full flex items-center justify-between px-6 py-4 hover:bg-wing-hover transition-colors rounded-xl"
+                >
+                    <div className="flex items-center gap-2">
+                        <svg
+                            className={`w-4 h-4 text-wing-muted transition-transform ${lastCollectionPanelOpen ? 'rotate-90' : ''}`}
+                            fill="none" viewBox="0 0 24 24" stroke="currentColor"
+                        >
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+                        </svg>
+                        <span className="text-sm font-semibold text-wing-text">마지막 수집 완료일시</span>
+                        <span className="text-xs text-wing-muted">({collectionStatusSummary.total}건)</span>
+                        {collectionStatusSummary.danger > 0 && (
+                            <span className="ml-1 inline-flex items-center px-1.5 py-0.5 rounded text-xs font-medium bg-red-500/10 text-red-600 dark:text-red-400">
+                                경고 {collectionStatusSummary.danger}
+                            </span>
+                        )}
+                        {collectionStatusSummary.warn > 0 && (
+                            <span className="ml-1 inline-flex items-center px-1.5 py-0.5 rounded text-xs font-medium bg-yellow-500/10 text-yellow-600 dark:text-yellow-400">
+                                주의 {collectionStatusSummary.warn}
+                            </span>
+                        )}
+                    </div>
+                    <span className="text-xs text-wing-muted">
+                        {lastCollectionPanelOpen ? '접기' : '펼치기'}
+                    </span>
+                </button>
+
+                {lastCollectionPanelOpen && (
+                    <div className="border-t border-wing-border/50 px-6 py-4 space-y-4">
+                        {lastCollectionStatuses.length === 0 ? (
+                            <div className="py-4 text-center text-sm text-wing-muted">
+                                수집 이력이 없습니다.
+                            </div>
+                        ) : (
+                            <>
+                                {/* 요약 바 */}
+                                <div className="flex items-center gap-4 text-sm">
+                                    <div className="flex items-center gap-1.5">
+                                        <span className="inline-block w-2.5 h-2.5 rounded-full bg-green-500" />
+                                        <span className="text-wing-muted">정상</span>
+                                        <span className="font-semibold text-wing-text">{collectionStatusSummary.normal}</span>
+                                    </div>
+                                    <div className="flex items-center gap-1.5">
+                                        <span className="inline-block w-2.5 h-2.5 rounded-full bg-yellow-500" />
+                                        <span className="text-wing-muted">주의</span>
+                                        <span className="font-semibold text-wing-text">{collectionStatusSummary.warn}</span>
+                                    </div>
+                                    <div className="flex items-center gap-1.5">
+                                        <span className="inline-block w-2.5 h-2.5 rounded-full bg-red-500" />
+                                        <span className="text-wing-muted">경고</span>
+                                        <span className="font-semibold text-wing-text">{collectionStatusSummary.danger}</span>
+                                    </div>
+                                    <span className="text-xs text-wing-muted ml-auto">
+                                        기준: 정상 24h 이내 · 주의 24~48h · 경고 48h 초과
+                                    </span>
+                                </div>
+
+                                {/* 테이블 */}
+                                <div className="overflow-x-auto">
+                                    <table className="w-full text-sm">
+                                        <thead>
+                                            <tr className="border-b border-wing-border/50">
+                                                <th className="text-left py-2 px-3 text-xs font-medium text-wing-muted">API명</th>
+                                                <th className="text-left py-2 px-3 text-xs font-medium text-wing-muted">마지막 수집 완료일시</th>
+                                                <th className="text-left py-2 px-3 text-xs font-medium text-wing-muted">경과시간</th>
+                                                <th className="text-center py-2 px-3 text-xs font-medium text-wing-muted">상태</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            {lastCollectionStatuses.map((s) => {
+                                                const level = getStatusLevel(s.elapsedMinutes);
+                                                return (
+                                                    <tr key={s.apiKey} className="border-b border-wing-border/30 hover:bg-wing-hover/50 transition-colors">
+                                                        <td className="py-2.5 px-3">
+                                                            <div className="text-wing-text font-medium">{s.apiDesc || s.apiKey}</div>
+                                                            {s.apiDesc && (
+                                                                <div className="text-xs text-wing-muted font-mono">{s.apiKey}</div>
+                                                            )}
+                                                        </td>
+                                                        <td className="py-2.5 px-3 font-mono text-xs text-wing-muted">
+                                                            {formatDateTime(s.lastSuccessDate)}
+                                                        </td>
+                                                        <td className={`py-2.5 px-3 text-xs font-medium ${getStatusColor(level)}`}>
+                                                            {formatElapsed(s.elapsedMinutes)}
+                                                        </td>
+                                                        <td className="py-2.5 px-3 text-center">
+                                                            <span className={`inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium ${getStatusBgColor(level)}`}>
+                                                                {level === 'normal' && '●'}
+                                                                {level === 'warn' && '▲'}
+                                                                {level === 'danger' && '■'}
+                                                                {' '}{getStatusLabel(level)}
+                                                            </span>
+                                                        </td>
+                                                    </tr>
+                                                );
+                                            })}
+                                        </tbody>
+                                    </table>
+                                </div>
+                            </>
+                        )}
+                    </div>
+                )}
+            </div>
+
             {/* 수집 기간 관리 패널 */}
             <div className="bg-wing-surface rounded-xl shadow-md">
                 <button

src/main/java/com/snp/batch/global/controller/BatchController.java

@@ -538,6 +538,17 @@ public class BatchController {
         return ResponseEntity.ok(stats);
     }
 
+    // ── 마지막 수집 성공일시 모니터링 API ──────────────────────────
+
+    @Operation(summary = "마지막 수집 성공일시 목록 조회",
+               description = "모든 API의 마지막 수집 성공 일시를 조회합니다. 오래된 순으로 정렬됩니다.")
+    @GetMapping("/last-collections")
+    public ResponseEntity<List<LastCollectionStatusResponse>> getLastCollectionStatuses() {
+        log.debug("Received request to get last collection statuses");
+        List<LastCollectionStatusResponse> statuses = batchService.getLastCollectionStatuses();
+        return ResponseEntity.ok(statuses);
+    }
+
     // ── 수집 기간 관리 API ───────────────────────────────────────
 
     @Operation(summary = "수집 기간 목록 조회", description = "모든 API의 수집 기간 설정을 조회합니다")

src/main/java/com/snp/batch/global/controller/WebViewController.java

@@ -14,7 +14,7 @@ public class WebViewController {
 
     @GetMapping({"/", "/jobs", "/executions", "/executions/{id:\\d+}",
                  "/recollects", "/recollects/{id:\\d+}",
-                 "/schedules", "/schedule-timeline"})
+                 "/schedules", "/schedule-timeline", "/monitoring"})
     public String forward() {
         return "forward:/index.html";
     }

src/main/java/com/snp/batch/global/dto/LastCollectionStatusResponse.java

@@ -0,0 +1,21 @@
+package com.snp.batch.global.dto;
+
+import java.time.LocalDateTime;
+
+/**
+ * 마지막 수집 성공일시 모니터링 응답 DTO
+ *
+ * @param apiKey          API 식별 키 (예: "EVENT_IMPORT_API")
+ * @param apiDesc         API 설명 (사용자 표시용, 예: "해양사건 수집")
+ * @param lastSuccessDate 마지막 수집 성공 일시
+ * @param updatedAt       레코드 최종 수정 일시
+ * @param elapsedMinutes  현재 시각 기준 경과 시간(분)
+ */
+public record LastCollectionStatusResponse(
+        String apiKey,
+        String apiDesc,
+        LocalDateTime lastSuccessDate,
+        LocalDateTime updatedAt,
+        long elapsedMinutes
+) {
+}

src/main/java/com/snp/batch/global/model/BatchLastExecution.java

@@ -22,6 +22,9 @@ public class BatchLastExecution {
     @Column(name = "API_KEY", length = 50)
     private String apiKey;
 
+    @Column(name = "API_DESC", length = 100)
+    private String apiDesc;
+
     @Column(name = "LAST_SUCCESS_DATE", nullable = false)
     private LocalDateTime lastSuccessDate;
 

src/main/java/com/snp/batch/service/BatchService.java

@@ -4,8 +4,10 @@ import com.snp.batch.common.batch.listener.RecollectionJobExecutionListener;
 import com.snp.batch.global.dto.*;
 import com.snp.batch.global.model.BatchApiLog;
 import com.snp.batch.global.model.BatchFailedRecord;
+import com.snp.batch.global.model.BatchLastExecution;
 import com.snp.batch.global.repository.BatchApiLogRepository;
 import com.snp.batch.global.repository.BatchFailedRecordRepository;
+import com.snp.batch.global.repository.BatchLastExecutionRepository;
 import com.snp.batch.global.repository.TimelineRepository;
 import jakarta.annotation.PostConstruct;
 import lombok.extern.slf4j.Slf4j;
@@ -27,6 +29,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.temporal.ChronoUnit;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -43,6 +46,7 @@ public class BatchService {
     private final RecollectionJobExecutionListener recollectionJobExecutionListener;
     private final BatchApiLogRepository apiLogRepository;
     private final BatchFailedRecordRepository failedRecordRepository;
+    private final BatchLastExecutionRepository batchLastExecutionRepository;
 
     @Autowired
     public BatchService(JobLauncher jobLauncher,
@@ -53,7 +57,8 @@ public class BatchService {
                         TimelineRepository timelineRepository,
                         RecollectionJobExecutionListener recollectionJobExecutionListener,
                         BatchApiLogRepository apiLogRepository,
-                        BatchFailedRecordRepository failedRecordRepository) {
+                        BatchFailedRecordRepository failedRecordRepository,
+                        BatchLastExecutionRepository batchLastExecutionRepository) {
         this.jobLauncher = jobLauncher;
         this.jobExplorer = jobExplorer;
         this.jobOperator = jobOperator;
@@ -63,6 +68,7 @@ public class BatchService {
         this.recollectionJobExecutionListener = recollectionJobExecutionListener;
         this.apiLogRepository = apiLogRepository;
         this.failedRecordRepository = failedRecordRepository;
+        this.batchLastExecutionRepository = batchLastExecutionRepository;
     }
 
     /**
@@ -717,6 +723,31 @@ public class BatchService {
                 .build();
     }
 
+    // ── 마지막 수집 성공일시 모니터링 ─────────────────────────────
+
+    /**
+     * 전체 API의 마지막 수집 성공일시를 조회합니다.
+     * lastSuccessDate 오름차순 정렬 (오래된 것이 위로 → 모니터링 편의)
+     */
+    @Transactional(readOnly = true)
+    public List<LastCollectionStatusResponse> getLastCollectionStatuses() {
+        LocalDateTime now = LocalDateTime.now();
+        return batchLastExecutionRepository.findAll().stream()
+                .sorted(Comparator.comparing(
+                        BatchLastExecution::getLastSuccessDate,
+                        Comparator.nullsFirst(Comparator.naturalOrder())))
+                .map(entity -> new LastCollectionStatusResponse(
+                        entity.getApiKey(),
+                        entity.getApiDesc(),
+                        entity.getLastSuccessDate(),
+                        entity.getUpdatedAt(),
+                        entity.getLastSuccessDate() != null
+                                ? ChronoUnit.MINUTES.between(entity.getLastSuccessDate(), now)
+                                : -1
+                ))
+                .toList();
+    }
+
     // ── F1: 강제 종료(Abandon) 관련 ──────────────────────────────
 
     public List<JobExecutionDto> getStaleExecutions(int thresholdMinutes) {