# Introduction
Currently preparing the `UpgradeCommand` refactor, in this way started
by cleaning up the existing avoiding unecessary dependencies to others
services allowing easier readability and concern centralization for
upcoming refactor
The UpgradeCommand was extending up to five classes, overriding
abstracted class and so on. It was also cascade
injecting 3 services
Introducing the `WorkspaceIteratorService` that centralize the commands
set to run over a single workspace logic shared between both atomic
upgrade command call and global upgradeCommand
## Tradeoff
Duplicated `@Option` between both `UpgradeCommandRunner` and
`WorkspaceMigrationRunner`
## Before
```
UpgradeCommand
└─ extends UpgradeCommandRunner
└─ extends ActiveOrSuspendedWorkspacesMigrationCommandRunner
└─ extends WorkspacesMigrationCommandRunner (owns workspace iteration loop + ORM deps)
└─ extends MigrationCommandRunner (dry-run, verbose, error handling)
└─ extends CommandRunner (nest-commander)
```
## Now
```
UpgradeCommand
└─ extends UpgradeCommandRunner
└─ extends CommandRunner (nest-commander)
uses ─► Services (via composition)
```
## Logging management
At the moment all services are logging, in the best of the world only
the runners should be doing so
## Summary
- Add `WORKSPACE_SCHEMA_DDL_LOCKED` env-only boolean config variable
that blocks all workspace schema DDL changes when set to `true`. This is
intended for hot upgrades where logical replication cannot handle DDL
changes. Enforced at two chokepoints:
- `WorkspaceMigrationRunnerService.run` — blocks all metadata-driven DDL
(object/field/index CRUD, app sync/uninstall, standard app sync, upgrade
commands)
- `WorkspaceDataSourceService.createWorkspaceDBSchema` /
`deleteWorkspaceDBSchema` — blocks workspace creation (sign-up) and hard
deletion. Uses a dedicated `WorkspaceDataSourceException` (not
ForbiddenException)
- Add maintenance mode feature with Admin Panel UI and user-facing
banner:
- **Backend**: `MaintenanceModeService` stores maintenance window
(startAt, endAt, optional link) in `core.keyValuePair` as
`CONFIG_VARIABLE`. Validates endAt > startAt. Uses `GraphQLISODateTime`
scalar for date fields. Exposed via `clientConfig` REST endpoint and
admin GraphQL mutations (`setMaintenanceMode`, `clearMaintenanceMode`)
- **Admin Panel**: New "Maintenance Mode" section in Health tab with UTC
datetime pickers and activate/deactivate controls
- **Banner**: `InformationBannerMaintenance` displayed at the top of
`DefaultLayout` for all users, using Temporal API for timezone-aware
formatting with an optional "Learn more" link
These two features are **independent** — the DDL lock is controlled via
env var for operational use, while maintenance mode is a UI notification
mechanism controlled from the admin panel.
- Deduplicate standard record command menu items by merging
single-record and multi-record delete, restore, destroy, and export
actions into shared record commands.
- Update frontend command registrations and engine component mappings to
use the new unified keys, while keeping deprecated engine keys
temporarily mapped for backward compatibility.
- Add a 1-21 upgrade command that removes legacy command menu items from
workspaces and creates the new unified standard items.
## Summary
- Adds a new `upgrade:1-21:backfill-datasource-to-workspace` command
that copies `dataSource.schema` into `workspace.databaseSchema` for all
active/suspended workspaces that haven't been migrated yet
- Registers the command in the 1-21 upgrade module and wires it into the
upgrade runner (runs before other 1-21 commands)
- Part of the ongoing deprecation of the `dataSource` table in favor of
storing `databaseSchema` directly on `WorkspaceEntity`
Paul Rastoin