dillard
ab3f0ea948
ExternalStorageFactory builds storages with files_external's own backends and auth mechanisms from an unsaved StorageConfig (as its ConfigAdapter does), and StorageBackend adapts any IStorage to IBackend (writeStream, seekable range reads, temp name + rename except on S3). IBackend::put() now owns and always closes the stream, because files_external's S3 writeStream closes it. Spike D (NC34): S3 (SeaweedFS) and SFTP: 120 MiB backup ~6s, unchanged run uploads nothing, restore bit-identical, no files_external mount created, no temp files (max 12 KiB in /tmp). Works with files_external disabled when its classes are loaded. Backup peak memory 85-89 MiB on these targets (to investigate).
109 lines
4.2 KiB
PHP
109 lines
4.2 KiB
PHP
<?php
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declare(strict_types=1);
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// Spike D: repository on S3 and SFTP through files_external classes, without any mount.
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// Run inside the Nextcloud container as the web user:
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// php -d memory_limit=128M /var/www/html/custom_apps/ng_backup/spikes/04-external-storage.php [s3|sftp|both]
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require '/var/www/html/lib/base.php';
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set_exception_handler(null);
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restore_error_handler();
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require __DIR__ . '/bootstrap.php';
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use OCA\Files_External\Service\BackendService;
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use OCA\NgBackup\Backend\ExternalStorageFactory;
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use OCA\NgBackup\Backend\StorageBackend;
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use OCA\NgBackup\Repository\Repository;
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\OC_App::loadApp('files_external');
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$which = $argv[1] ?? 'both';
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$ok = true;
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$check = static function (string $name, bool $pass) use (&$ok): void {
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printf("%-62s %s\n", $name, $pass ? 'PASS' : 'FAIL');
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$ok = $ok && $pass;
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};
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$hashTree = static function (string $root): array {
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$out = [];
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$it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($root, FilesystemIterator::SKIP_DOTS));
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foreach ($it as $f) {
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if ($f->isFile()) {
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$out[substr($f->getPathname(), strlen($root) + 1)] = hash_file('sha256', $f->getPathname());
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}
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}
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ksort($out);
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return $out;
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};
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// Source tree: 100 small files + one 120 MiB file.
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$src = '/tmp/ngb-d-src';
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exec('rm -rf /tmp/ngb-d-src /tmp/ngb-d-restore-*');
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mkdir("$src/docs", 0700, true);
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for ($i = 0; $i < 100; $i++) {
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file_put_contents("$src/docs/note-$i.txt", str_repeat("notitie $i ", 2000));
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}
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$fh = fopen("$src/big.bin", 'wb');
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for ($i = 0; $i < 120; $i++) {
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fwrite($fh, random_bytes(1048576));
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}
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fclose($fh);
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$state = $hashTree($src);
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$factory = new ExternalStorageFactory(\OCP\Server::get(BackendService::class));
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$names = array_column($factory->describeBackends(), 'id');
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printf("files_external backends available: %s\n", implode(', ', $names));
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$targets = [
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's3' => ['amazons3', 'amazons3::accesskey', [
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'bucket' => 'ngbackup', 'hostname' => 's3', 'port' => '8333', 'region' => 'us-east-1',
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'use_ssl' => false, 'use_path_style' => true, 'autocreate' => true,
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'key' => 'ngbtestkey', 'secret' => 'ngbtestsecret123',
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]],
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'sftp' => ['sftp', 'password::password', [
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'host' => 'sftp', 'root' => '/repo', 'user' => 'ngb', 'password' => 'ngbtestpass',
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]],
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];
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$mountsBefore = (int)\OCP\Server::get(\OCP\IDBConnection::class)->getQueryBuilder()
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->select($q = \OCP\Server::get(\OCP\IDBConnection::class)->getQueryBuilder()->func()->count('*'))
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->from('external_mounts')->executeQuery()->fetchOne();
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foreach ($targets as $name => [$backendId, $authId, $options]) {
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if ($which !== 'both' && $which !== $name) {
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continue;
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}
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echo "--- $name\n";
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$storage = $factory->create($backendId, $authId, $options);
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$backend = new StorageBackend($storage, 'spike-' . bin2hex(random_bytes(3)));
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memory_reset_peak_usage();
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$t = microtime(true);
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$repo = Repository::init($backend, 'spike passphrase');
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$r1 = $repo->backupDirectory($src, null, $name);
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printf("backup: %.1fs, peak %.1f MiB, uploaded %.1f MiB\n", microtime(true) - $t, memory_get_peak_usage() / 1048576, $r1['uploaded'] / 1048576);
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$t = microtime(true);
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$r2 = $repo->backupDirectory($src, $r1['snapshot'], $name);
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printf("unchanged run: %.2fs, uploaded %d bytes\n", microtime(true) - $t, $r2['uploaded']);
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memory_reset_peak_usage();
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$t = microtime(true);
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$repo = Repository::open($backend, 'spike passphrase');
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$repo->restore($r1['snapshot'], "/tmp/ngb-d-restore-$name");
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printf("restore: %.1fs, peak %.1f MiB\n", microtime(true) - $t, memory_get_peak_usage() / 1048576);
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$check("$name: restored tree identical", $hashTree("/tmp/ngb-d-restore-$name") === $state);
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$check("$name: unchanged run uploads nothing", $r2['uploaded'] === 0);
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$check("$name: peak memory < 64 MiB", memory_get_peak_usage() < 64 * 1048576);
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$check("$name: objects on target: config, packs, index, snapshots", count($backend->list('snapshots')) === 2 && $backend->exists('config'));
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}
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$mountsAfter = (int)\OCP\Server::get(\OCP\IDBConnection::class)->getQueryBuilder()
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->select(\OCP\Server::get(\OCP\IDBConnection::class)->getQueryBuilder()->func()->count('*'))
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->from('external_mounts')->executeQuery()->fetchOne();
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$check("no files_external mount created ($mountsBefore -> $mountsAfter)", $mountsBefore === $mountsAfter);
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exec('rm -rf /tmp/ngb-d-src /tmp/ngb-d-restore-*');
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echo $ok ? "ALL PASS\n" : "FAILURES\n";
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exit($ok ? 0 : 1);
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