fix(settings): сохранять результат операций базы при вторичных сбоях

backend/src/db/operation-lock.ts

@@ -3,13 +3,13 @@ type Client = {
   release: (destroy?: boolean) => void
 }
 /** Nonblocking session lock: a second destructive operation is rejected rather than queued. */
-export async function withTrafficFlowPurgeLock<T>(connect: () => Promise<Client>, key: number, run: () => Promise<T>): Promise<T> {
+export async function withOperationLock<T>(connect: () => Promise<Client>, key: number, run: () => Promise<T>, busyMessage = "Сброс NetFlow уже выполняется"): Promise<T> {
   const client = await connect()
   let owned = false, destroy = false
   try {
     destroy = true
     const result = await client.query("SELECT pg_try_advisory_lock($1) AS acquired", [key])
-    if (result.rows[0]?.acquired === false) { destroy = false; throw new Error("Сброс NetFlow уже выполняется") }
+    if (result.rows[0]?.acquired === false) { destroy = false; throw new Error(busyMessage) }
     if (result.rows[0]?.acquired !== true) throw new Error("Блокировка сброса NetFlow не подтверждена")
     owned = true; destroy = false
     return await run()
@@ -24,3 +24,5 @@ export async function withTrafficFlowPurgeLock<T>(connect: () => Promise<Client>
     client.release(destroy)
   }
 }
+
+export const withTrafficFlowPurgeLock = withOperationLock