dillard
6cbc5d79d4
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Wires the existing RepositoryExportDestination/RepositoryImportSource (see lib/UserMigration/) into user_migration's own UserMigrationService, resolved on demand through a new UserMigrationServiceLocator since the app is an optional dependency (PLAN.md 3.8) -- without it, only this feature is unavailable, the full backup still works. New: UserBackupService::backupUser() (occ backup:backup:user) streams a user_migration export straight into the repository, under the same shared location lock as a regular backup. UserRestoreService::restoreUser() (occ backup:restore:user) never imports over a live account: --mode=replace safety-exports the current state first, then deletes and recreates the account from the backup under the same uid; --mode=as-backup restores into a new "<uid>-bak" account instead, since Nextcloud cannot rename a uid. The catalog now also tracks user export manifests (Repository::recordUserExport/ listUserExports/forgetUserExport/isRecordedUserExport), rollback-protected like a snapshot: listUserExports() verifies each one is still present on the location, and restore only ever reads a manifest the verified catalog actually recorded, never an arbitrary caller-supplied path. prune()'s existing raw users/ scan for blob retention is unchanged. A new short exclusive "catalog" lock (PruneService::catalogLockKey()) serializes the catalog write itself, so two concurrent per-user backups (or one alongside a full backup) can no longer race to write the same next generation and silently drop one of them -- the broader per-target shared lock only ever protected against a concurrent cleanup, not against other shared holders. Two real bugs found by testing this against a live Nextcloud instance, not by unit tests (RepositoryExportDestination/RepositoryImportSource implement OCP interfaces that plain PHPUnit can't load, see tests/Unit/Repository/UserExportTest.php's docblock; the new tests/integration/user-roundtrip.sh covers the real round trip instead): - RepositoryImportSource::copyToFolder() double-closed the stream it handed to putContent()/newFile() (both already close it themselves), which throws a TypeError on PHP 8 and broke every restored file with content. - A replace-mode restore failed on NotPermittedException: IRootFolder::getUserFolder() caches a Folder per uid for the process lifetime, so after delete+recreate of the same uid the import still got the deleted account's (now storage-less) folder. Fixed by dispatching FilesystemTornDownEvent, which Root already listens for to clear exactly that cache -- no internal OC\ classes needed. Local review (CodeRabbit + Codex) against this diff found three more real issues, all fixed: the catalog write race above, a failed as-backup import leaving a broken stub account behind (now deleted on failure), and an export stream leak on a read/backend failure in RepositoryExportDestination::copyFolder() (now closed in a finally). Deliberately left out: wiring per-user export into the automatic backup schedule (on-demand via occ only, for now) and retention/pruning of old user exports -- both open design questions, not yet decided. The lease covering a single export/import still has a fixed TTL (3600s) with no mid-call refresh, since UserMigrationService exposes no progress; a resumable, step-based per-user backup (like the main BackupService run) would remove that cap but is a bigger change than this pass.
58 lines
2.2 KiB
PHP
58 lines
2.2 KiB
PHP
<?php
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declare(strict_types=1);
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// SPDX-FileCopyrightText: 2026 Dillard Blom
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// SPDX-License-Identifier: AGPL-3.0-or-later
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namespace OCA\NgBackup\Command;
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use OCA\NgBackup\Service\TargetService;
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use OCA\NgBackup\Service\UserRestoreService;
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use Symfony\Component\Console\Command\Command;
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use Symfony\Component\Console\Input\InputArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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final class RestoreUser extends Command {
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public function __construct(
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private TargetService $targets,
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private UserRestoreService $userRestore,
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) {
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parent::__construct();
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}
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protected function configure(): void {
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$this->setName('backup:restore:user')
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->setDescription('Restore a user from a user_migration export (see backup:backup:user)')
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->addArgument('target', InputArgument::REQUIRED, 'Location name or id')
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->addArgument('manifest', InputArgument::REQUIRED, 'Manifest path printed by backup:backup:user (users/<uid>/<exportId>)')
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->addOption('mode', 'm', InputOption::VALUE_REQUIRED, 'replace or as-backup', UserRestoreService::MODE_REPLACE)
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->setHelp(<<<'HELP'
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Never imports over a live account. Modes:
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replace (default) safety-exports the current account first, then deletes and recreates it
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fresh from the backup, under the same user id
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as-backup restores into a new account "<uid>-bak" (or "-bak-2", ...) instead, so an admin can
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compare and transfer by hand; Nextcloud cannot rename a user id, so the backup gets
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the new name, never the existing account
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Example:
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occ backup:restore:user offsite users/alice/20261005T120000Z-ab12cd34
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occ backup:restore:user offsite users/alice/20261005T120000Z-ab12cd34 --mode=as-backup
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HELP);
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}
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protected function execute(InputInterface $input, OutputInterface $output): int {
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try {
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$target = $this->targets->get($input->getArgument('target'));
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$user = $this->userRestore->restoreUser($target, (string)$input->getArgument('manifest'), (string)$input->getOption('mode'));
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} catch (\Throwable $e) {
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$output->writeln('<error>' . $e->getMessage() . '</error>');
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return 1;
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}
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$output->writeln('Restored <info>' . $user->getUID() . '</info>.');
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return 0;
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}
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}
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