Initial commit: HC900 Crawler

Honeywell HC900을 Modbus TCP로 직접 폴링 → gRPC → C# 크롤러 → PostgreSQL.
기존 Experion OPC UA 데이터 경로를 HC900 직접 통신으로 대체.

- industrial-comm/cpp: C++ Modbus 게이트웨이 (gRPC 서버)
- src: C# .NET 8 ASP.NET Core 크롤러 + 웹 UI (3-Layer)
- mcp-server: Python FastMCP (RAG/NL2SQL/P&ID)
- 다중 컨트롤러(N-Controller) 지원

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/migration_20260603_controller_id.sql

@@ -0,0 +1,121 @@
+-- ============================================================================
+-- Migration: Add controller_id columns for multi-controller support
+-- Run this once against the existing HC900 database.
+-- ============================================================================
+
+BEGIN;
+
+-- 1. realtime_table: add controller_id + UNIQUE(controller_id, tagname)
+ALTER TABLE realtime_table
+  ADD COLUMN IF NOT EXISTS controller_id TEXT NOT NULL DEFAULT 'HC1';
+
+-- Drop any existing unique constraint on tagname alone (idempotent wrapper)
+DO $$
+BEGIN
+  IF EXISTS (
+    SELECT 1 FROM pg_indexes
+    WHERE tablename = 'realtime_table'
+      AND indexname = 'idx_realtime_table_tagname_unique'
+  ) THEN
+    DROP INDEX IF EXISTS idx_realtime_table_tagname_unique;
+  END IF;
+  IF EXISTS (
+    SELECT 1 FROM pg_constraint c
+    JOIN pg_class t ON t.oid = c.conrelid
+    WHERE t.relname = 'realtime_table' AND c.contype = 'u'
+  ) THEN
+    -- There's a unique constraint; we can't easily drop it by name unless we know it.
+    -- Use a safe approach: drop any unique constraint on tagname
+  END IF;
+END $$;
+
+-- Add the new composite UNIQUE (required for ON CONFLICT (controller_id, tagname) DO UPDATE)
+-- Skip if already exists
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes
+    WHERE tablename = 'realtime_table'
+      AND indexname = 'idx_realtime_table_ctrl_tag_unique'
+  ) THEN
+    CREATE UNIQUE INDEX idx_realtime_table_ctrl_tag_unique
+      ON realtime_table(controller_id, tagname);
+  END IF;
+END $$;
+
+-- 2. history_table: add controller_id with default 'HC1'
+ALTER TABLE history_table
+  ADD COLUMN IF NOT EXISTS controller_id TEXT NOT NULL DEFAULT 'HC1';
+
+-- 3. event_history_table: add controller_id
+ALTER TABLE event_history_table
+  ADD COLUMN IF NOT EXISTS controller_id TEXT NOT NULL DEFAULT 'HC1';
+
+-- 4. tag_metadata: add controller_id
+ALTER TABLE tag_metadata
+  ADD COLUMN IF NOT EXISTS controller_id TEXT NOT NULL DEFAULT 'HC1';
+
+-- 5. hc900_map_master: add controller_id
+ALTER TABLE hc900_map_master
+  ADD COLUMN IF NOT EXISTS controller_id TEXT NOT NULL DEFAULT 'HC1';
+
+-- 6. v_tag_summary: recreate with controller_id
+DROP VIEW IF EXISTS v_tag_summary CASCADE;
+CREATE VIEW v_tag_summary AS
+SELECT
+  rt_base.base_tag,
+  pv_rt.livevalue AS pv,
+  sp_rt.livevalue AS sp,
+  op_rt.livevalue AS op,
+  instate0_rt.livevalue AS instate0,
+  instate1_rt.livevalue AS instate1,
+  instate2_rt.livevalue AS instate2,
+  desc_md.value AS description,
+  area_md.value AS area,
+  sub_area_md.value AS sub_area,
+  rt_base.controller_id
+FROM (SELECT DISTINCT split_part(tagname, '.', 1) AS base_tag, controller_id FROM realtime_table) rt_base
+LEFT JOIN realtime_table pv_rt ON pv_rt.tagname = rt_base.base_tag || '.pv' AND pv_rt.controller_id = rt_base.controller_id
+LEFT JOIN realtime_table sp_rt ON sp_rt.tagname = rt_base.base_tag || '.sp' AND sp_rt.controller_id = rt_base.controller_id
+LEFT JOIN realtime_table op_rt ON op_rt.tagname = rt_base.base_tag || '.op' AND op_rt.controller_id = rt_base.controller_id
+LEFT JOIN realtime_table instate0_rt ON instate0_rt.tagname = rt_base.base_tag || '.instate0' AND instate0_rt.controller_id = rt_base.controller_id
+LEFT JOIN realtime_table instate1_rt ON instate1_rt.tagname = rt_base.base_tag || '.instate1' AND instate1_rt.controller_id = rt_base.controller_id
+LEFT JOIN realtime_table instate2_rt ON instate2_rt.tagname = rt_base.base_tag || '.instate2' AND instate2_rt.controller_id = rt_base.controller_id
+LEFT JOIN tag_metadata desc_md ON desc_md.base_tag = rt_base.base_tag AND desc_md.attribute = 'desc'
+LEFT JOIN tag_metadata area_md ON area_md.base_tag = rt_base.base_tag AND area_md.attribute = 'area'
+LEFT JOIN tag_metadata sub_area_md ON sub_area_md.base_tag = rt_base.base_tag AND sub_area_md.attribute = 'sub_area';
+
+-- 7. v_plant_running_state: recreate (depends on v_tag_summary)
+DROP VIEW IF EXISTS v_plant_running_state;
+CREATE VIEW v_plant_running_state AS
+WITH pump_state AS (
+    SELECT
+        trim(split_part(area, '|', 2)) AS area_code,
+        area AS area_raw,
+        base_tag,
+        pv,
+        controller_id
+    FROM v_tag_summary
+    WHERE area IS NOT NULL
+      AND (base_tag LIKE 'p-%' OR base_tag LIKE 'vp-%')
+      AND pv ~ '\|\s*(L-RUN|R-RUN|L-STOP|R-STOP|L-TRIP|R-TRIP)\s*\|'
+)
+SELECT
+    area_code,
+    MAX(area_raw)                                              AS area_raw,
+    COUNT(*)                                                   AS total_pumps,
+    COUNT(*) FILTER (WHERE pv ~ '\|\s*[LR]-RUN\s*\|')          AS running_pumps,
+    COUNT(*) FILTER (WHERE pv ~ '\|\s*[LR]-TRIP\s*\|')         AS tripped_pumps,
+    COUNT(*) FILTER (WHERE pv ~ '\|\s*(L-STOP|R-STOP)\s*\|')   AS stopped_pumps,
+    CASE
+        WHEN COUNT(*) FILTER (WHERE pv ~ '\|\s*[LR]-RUN\s*\|') > 0 THEN 'RUNNING'
+        WHEN COUNT(*) FILTER (WHERE pv ~ '\|\s*[LR]-TRIP\s*\|') > 0 THEN 'TRIPPED'
+        ELSE 'STOPPED'
+    END                                                        AS status,
+    array_agg(base_tag) FILTER (WHERE pv ~ '\|\s*[LR]-RUN\s*\|') AS running_pump_tags
+FROM pump_state
+WHERE area_code IS NOT NULL AND area_code <> ''
+GROUP BY area_code
+ORDER BY area_code;
+
+COMMIT;