fix(netflow): отклонять конкурентный сброс до удаления данных

backend/src/services/traffic-flow-ingest.ts

@@ -1,6 +1,7 @@
 import { deleteTrafficFlowData, executeTrafficFlowPurge } from "./traffic-flow-purge-execution.js"
+import { withTrafficFlowPurgeLock } from "../db/operation-lock.js"
 import { Worker } from "node:worker_threads"
-import { db, dbAll, pool, withAdvisoryLock } from "../db/index.js"
+import { db, dbAll, pool } from "../db/index.js"
 import { dropExpiredPartitions } from "../db/partitions.js"
 import { servers } from "../db/schema.js"
 import type { FlowPurgeDto, FlowStatsDto, FlowTalkerDto } from "@mmapp/contracts/traffic-flow"
@@ -519,7 +520,7 @@ const PURGE_LOCK_KEY = 8_723_103
 
 /** Удаляет данные одним transaction; ключи и пиры не меняются. */
 export async function purgeTrafficFlowStore(): Promise<FlowPurgeDto> {
-  return withAdvisoryLock(PURGE_LOCK_KEY, () => executeTrafficFlowPurge({
+  return withTrafficFlowPurgeLock(() => pool.connect(), PURGE_LOCK_KEY, () => executeTrafficFlowPurge({
     stop: async () => {
       wantListen = false
       await stopWorkerProcessAsync()