Ensembia/nextcloud-ng_backup
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Full restore creates missing tables and suspends foreign keys; --install-apps; clearer messages

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Backups now record each table's structure in the dump manifest. The full
restore creates tables that do not exist on the new instance (left behind
by apps that were removed or are switched off), lists all problems at
once, and no longer stops on apps that are missing. Foreign keys are not
checked while rows are loaded in name order, and checked again before the
restore commits (PostgreSQL: dropped and added back in the transaction).

--install-apps installs or enables the apps that were enabled at backup
time; --skip-missing-tables leaves out tables of older backups whose
structure is unknown. nextcloud-aio is never required.

backup:target:add without a key points to backup:key:import, and says that
connecting can take a while. Removing a location drops its cached index;
a migration removes the cache of locations that are gone.

The full-restore test now also runs on PostgreSQL with Mail (foreign keys)
and a disabled app.
This commit is contained in:
Dillard Blom
2026-10-18 01:45:01 +02:00
parent 5af712acc3
commit d8ef50732f
11 changed files with 359 additions and 46 deletions
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lib/Service/RestoreFullService.php
+34 -19
View File
@@ -43,34 +43,49 @@ final class RestoreFullService {
) {
}
/** Apps that only exist in a particular setup and are never needed elsewhere. */
private const ENVIRONMENT_APPS = ['nextcloud-aio'];
/**
* Whether this installation can receive $snapshotId: same Nextcloud major version, and every
* app that was enabled at backup time already installed here (its tables must exist before
* the database restore can write into them).
* Whether this installation can receive $snapshotId, all problems at once:
* - the same Nextcloud major version is required;
* - apps that were enabled at backup time but are not here (they work again once installed);
* - tables in the backup that do not exist here: a backup made from 1.0.0-rc.2 on records
* their structure and the restore creates them, an older one cannot (missingTables).
*
* @return array{ok:bool, currentMajor:string, snapshotMajor:string, missingApps:list<string>}
* @return array{ok:bool, currentMajor:string, snapshotMajor:string, missingApps:list<string>, missingTables:list<string>}
*/
public function checkCompatibility(Target $target, string $snapshotId): array {
$meta = $this->targets->repository($target)->snapshotMeta($snapshotId);
public function checkCompatibility(Target $target, string $snapshotId, bool $skipMissingTables = false): array {
$repo = $this->targets->repository($target);
$meta = $repo->snapshotMeta($snapshotId);
$currentMajor = explode('.', $this->config->getSystemValueString('version'))[0];
$snapshotMajor = explode('.', (string)($meta['nextcloud'] ?? ''))[0];
$enabled = array_flip($this->appManager->getEnabledApps());
$missingApps = array_values(array_diff(array_keys($meta['apps'] ?? []), array_keys($enabled)));
$missingApps = array_values(array_diff(array_keys($meta['apps'] ?? []), array_keys($enabled), self::ENVIRONMENT_APPS));
$missingTables = [];
if (isset($meta['db'])) {
$manifest = json_decode($repo->getObject($meta['db']), true, 512, JSON_THROW_ON_ERROR);
$prefix = $this->config->getSystemValueString('dbtableprefix', 'oc_');
$dumper = new DbDumper($this->db->getInner(), $prefix);
$missingTables = array_values(array_filter($dumper->missingTables($manifest),
fn (string $t) => !isset($manifest['tables'][$t]['schema']) && !str_starts_with($t, $prefix . 'ngb_')));
}
return [
'ok' => $currentMajor === $snapshotMajor && $missingApps === [],
'ok' => $currentMajor === $snapshotMajor && ($missingTables === [] || $skipMissingTables),
'currentMajor' => $currentMajor,
'snapshotMajor' => $snapshotMajor,
'missingApps' => $missingApps,
'missingTables' => $missingTables,
];
}
/** @return array{dbReport:array, dataFiles:int, configKeys:int, dbConsistent:bool} */
public function restoreFull(Target $target, string $snapshotId): array {
$check = $this->checkCompatibility($target, $snapshotId);
/** @return array{dbReport:array, dataFiles:int, configKeys:int, dbConsistent:bool, missingApps:list<string>} */
public function restoreFull(Target $target, string $snapshotId, bool $skipMissingTables = false): array {
$check = $this->checkCompatibility($target, $snapshotId, $skipMissingTables);
if (!$check['ok']) {
throw new \RuntimeException($this->describeBlockers($check));
}
return $this->withSharedLock($target, function (callable $refresh) use ($target, $snapshotId) {
return $this->withSharedLock($target, function (callable $refresh) use ($target, $snapshotId, $skipMissingTables, $check) {
$beat = LeaseService::throttled($refresh);
$repo = $this->targets->repository($target);
$meta = $repo->snapshotMeta($snapshotId);
@@ -102,7 +117,7 @@ final class RestoreFullService {
$ownAppConfig = $this->preserveOwnAppConfig();
$dumper = new DbDumper($this->db->getInner(), $prefix);
try {
$dumper->restore($repo, $manifest, $dbReport, $beat);
$dumper->restore($repo, $manifest, $dbReport, $beat, $skipMissingTables);
} finally {
$this->restoreOwnAppConfig($ownAppConfig);
}
@@ -125,8 +140,8 @@ final class RestoreFullService {
);
}
return ['dbReport' => $dbReport ?? ['skipped' => [], 'restored' => []], 'dataFiles' => $dataFiles, 'configKeys' => count($backupConfig),
'dbConsistent' => (bool)($manifest['consistent'] ?? true)];
return ['dbReport' => $dbReport ?? ['skipped' => [], 'restored' => [], 'created' => [], 'missing' => []], 'dataFiles' => $dataFiles, 'configKeys' => count($backupConfig),
'dbConsistent' => (bool)($manifest['consistent'] ?? true), 'missingApps' => $check['missingApps']];
});
}
@@ -209,11 +224,11 @@ final class RestoreFullService {
if ($check['currentMajor'] !== $check['snapshotMajor']) {
$parts[] = "this installation is Nextcloud {$check['currentMajor']}, the backup is from {$check['snapshotMajor']} (same major version required)";
}
if ($check['missingApps'] !== []) {
$parts[] = 'install these apps first (their tables must exist before the database restore can use them): '
. implode(', ', array_map(fn (string $a) => "occ app:install $a", $check['missingApps']));
if ($check['missingTables'] !== []) {
$prefix = $this->config->getSystemValueString('dbtableprefix', 'oc_');
$parts[] = DbDumper::describeMissing($check['missingTables'], $prefix);
}
return implode('; ', $parts);
return implode("\n", $parts);
}
private function withSharedLock(Target $target, callable $fn): mixed {