From b3985d77fbf2ff8be91d6e4ecb2d8f0822a9a955 Mon Sep 17 00:00:00 2001
From: windpacer <bogang.park@gmail.com>
Date: Fri, 19 Jun 2026 05:44:11 +0900
Subject: [PATCH] =?UTF-8?q?fix(crawler):=20realtime=5Ftable=20id=20bigint(?=
 =?UTF-8?q?=EC=8B=9C=ED=80=80=EC=8A=A4=20=EC=98=A4=EB=B2=84=ED=94=8C?=
 =?UTF-8?q?=EB=A1=9C)=20+=20HCX=20=ED=8F=B4=EB=A7=81=20=EB=B9=84=ED=99=9C?=
 =?UTF-8?q?=EC=84=B1?=
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운영 사고 재발 방지:
- realtime_table.id가 SERIAL(int4)이라 매 poll의 nextval 소비로 2^31 도달 →
  전체 realtime 업서트가 'reached maximum value of sequence'로 정지(현장에서 14h
  무갱신 발생, bigint ALTER로 라이브 복구 완료). 신규 배포: CREATE를 BIGSERIAL로,
  기존 배포: 기동 시 멱등 마이그레이션(integer일 때만 bigint+시퀀스 ALTER).
- gateway-config: HCX(IP·맵 없는 플레이스홀더)가 enabled=true라 50055 연결거부
  로그 양산 → enabled=false.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 config/gateway-config.json                    |  2 +-
 src/Infrastructure/Database/Hc900DbContext.cs | 17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/config/gateway-config.json b/config/gateway-config.json
index 0700fc3..798162f 100644
--- a/config/gateway-config.json
+++ b/config/gateway-config.json
@@ -53,7 +53,7 @@
       "grpcPort": 50055,
       "pollIntervalMs": 1000,
       "registerMapPath": "",
-      "enabled": true
+      "enabled": false
     }
   ]
 }
\ No newline at end of file
diff --git a/src/Infrastructure/Database/Hc900DbContext.cs b/src/Infrastructure/Database/Hc900DbContext.cs
index d2e5a3d..4bc5ae7 100644
--- a/src/Infrastructure/Database/Hc900DbContext.cs
+++ b/src/Infrastructure/Database/Hc900DbContext.cs
@@ -705,7 +705,7 @@ public class Hc900DbService : IExperionDbService
             // realtime_table 생성 (실시간 모니터링 포인트)
             await _ctx.Database.ExecuteSqlRawAsync("""
                 CREATE TABLE IF NOT EXISTS realtime_table (
-                    id            SERIAL PRIMARY KEY,
+                    id            BIGSERIAL PRIMARY KEY,
                     tagname       TEXT        NOT NULL,
                     node_id       TEXT        NOT NULL,
                     livevalue     TEXT,
@@ -772,6 +772,21 @@ public class Hc900DbService : IExperionDbService
                     ON event_history_table(tagname, event_type, event_time DESC);
                 """);
 
+            // ── realtime_table.id int4→bigint 마이그레이션 (멱등) ───────────────
+            // realtime_table은 upsert지만 매 poll마다 nextval을 소비 → SERIAL(int4)은
+            // 2^31에서 오버플로해 전체 업서트가 멈춘다(운영 사고). 이미 bigint면 no-op.
+            await _ctx.Database.ExecuteSqlRawAsync("""
+                DO $$
+                BEGIN
+                  IF (SELECT data_type FROM information_schema.columns
+                      WHERE table_schema = current_schema()
+                        AND table_name = 'realtime_table' AND column_name = 'id') = 'integer' THEN
+                    ALTER TABLE realtime_table ALTER COLUMN id TYPE bigint;
+                    ALTER SEQUENCE realtime_table_id_seq AS bigint MAXVALUE 9223372036854775807;
+                  END IF;
+                END $$;
+                """);
+
             // ── Multi-Controller Migration (controller_id) ─────────────────────
             // 기존 테이블에 controller_id 컬럼 추가 (멱등)
             await _ctx.Database.ExecuteSqlRawAsync(