fix(maintenance): prevent enable/disable maintenance CLI hanging on occasion (#24713)

* fix(maintenance): prevent CLI hanging on occassion
fix(maintenance): always ack messages
fix(maintenance): ensure Redis is connected first

* chore(maintenance): validate app restart responses

* chore: mock the app restart callback

* fix: ack may not exist depending on caller

* refactor: move one shot into app.repository

* fix: send correct state in one shot

* chore: log restart event

server/src/services/cli.service.ts

@@ -5,7 +5,7 @@ import { MaintenanceAuthDto } from 'src/dtos/maintenance.dto';
 import { UserAdminResponseDto, mapUserAdmin } from 'src/dtos/user.dto';
 import { SystemMetadataKey } from 'src/enum';
 import { BaseService } from 'src/services/base.service';
-import { createMaintenanceLoginUrl, generateMaintenanceSecret, sendOneShotAppRestart } from 'src/utils/maintenance';
+import { createMaintenanceLoginUrl, generateMaintenanceSecret } from 'src/utils/maintenance';
 import { getExternalDomain } from 'src/utils/misc';
 
 @Injectable()
@@ -55,8 +55,7 @@ export class CliService extends BaseService {
 
     const state = { isMaintenanceMode: false as const };
     await this.systemMetadataRepository.set(SystemMetadataKey.MaintenanceMode, state);
-
-    sendOneShotAppRestart(state);
+    await this.appRepository.sendOneShotAppRestart(state);
 
     return {
       alreadyDisabled: false,
@@ -89,7 +88,7 @@ export class CliService extends BaseService {
       secret,
     });
 
-    sendOneShotAppRestart({
+    await this.appRepository.sendOneShotAppRestart({
       isMaintenanceMode: true,
     });