dillard
38654317a2
- RetentionPolicy (last/daily/weekly/monthly) and PruneService: forget snapshots the policy drops, delete packs nothing uses and repack mostly unused ones by copying encrypted blobs as-is; new packs are indexed before old ones are removed - a location lock keeps prune and backups apart; append-only locations are never pruned (cleanup via the location's lifecycle rules) - weekly prune from the background job; occ backup:prune [--dry-run], backup:retention, backup:target:append-only - tests: forget+prune frees space and the remaining snapshot restores identically, repack of mixed packs, dry-run preview, retention buckets
86 lines
3.0 KiB
PHP
86 lines
3.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace OCA\NgBackup\Tests\Unit\Repository;
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use OCA\NgBackup\Backend\LocalBackend;
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use OCA\NgBackup\Crypto\KeyRing;
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use OCA\NgBackup\Repository\Repository;
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use OCA\NgBackup\Tests\Unit\TempDirTrait;
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use PHPUnit\Framework\TestCase;
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class PruneTest extends TestCase {
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use TempDirTrait;
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private function du(LocalBackend $b): int {
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$root = (new \ReflectionProperty(LocalBackend::class, 'root'))->getValue($b);
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$total = 0;
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foreach ($b->list('packs') as $p) {
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$total += filesize("$root/$p");
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}
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return $total;
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}
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public function testForgetAndPruneFreesSpaceAndKeepsTheRest(): void {
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$src = $this->tempDir();
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$backend = new LocalBackend($this->tempDir());
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$keys = KeyRing::generate();
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$repo = Repository::initWithKey($backend, $keys, $keys->wrap('pw'));
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file_put_contents("$src/keep.bin", random_bytes(6 * 1048576));
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file_put_contents("$src/old.bin", random_bytes(40 * 1048576));
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$old = $repo->backupDirectory($src);
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unlink("$src/old.bin");
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file_put_contents("$src/new.bin", random_bytes(3 * 1048576));
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$new = $repo->backupDirectory($src, $old['snapshot']);
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$expected = self::hashTree($src);
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$before = $this->du($backend);
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$dry = $repo->prune(true);
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$this->assertSame(0, $dry['freedBytes'], 'nothing is unused while both snapshots exist');
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$preview = $repo->prune(true, 0.5, [$old['snapshot']]);
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$this->assertGreaterThan(35 * 1048576, $preview['freedBytes'], 'dry run can preview forgetting a snapshot');
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$repo->forget($old['snapshot']);
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$plan = $repo->prune(true);
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$this->assertSame($plan, $repo->prune(true, 0.5, []));
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$this->assertGreaterThan(35 * 1048576, $plan['freedBytes']);
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$this->assertSame($before, $this->du($backend), 'dry run changes nothing');
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$result = $repo->prune();
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$this->assertGreaterThan(0, $result['deleted'] + $result['repacked']);
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$this->assertLessThan($before - 35 * 1048576, $this->du($backend));
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$reopened = Repository::openWithKey($backend, $keys);
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$target = $this->tempDir();
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$reopened->restore($new['snapshot'], $target);
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$this->assertSame($expected, self::hashTree($target));
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$this->assertSame([$new['snapshot']], $reopened->listSnapshots());
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}
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public function testRepackKeepsUsedBlobsOfMixedPacks(): void {
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$src = $this->tempDir();
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$backend = new LocalBackend($this->tempDir());
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$keys = KeyRing::generate();
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$repo = Repository::initWithKey($backend, $keys, $keys->wrap('pw'));
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// Small files share packs: deleting most of them leaves mixed packs to repack.
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for ($i = 0; $i < 40; $i++) {
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file_put_contents("$src/f$i", random_bytes(500000));
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}
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$a = $repo->backupDirectory($src);
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for ($i = 0; $i < 40; $i++) {
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if ($i % 5 !== 0) {
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unlink("$src/f$i");
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}
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}
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$b = $repo->backupDirectory($src, $a['snapshot']);
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$repo->forget($a['snapshot']);
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$r = $repo->prune(false, 0.5);
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$this->assertGreaterThan(0, $r['repacked']);
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$target = $this->tempDir();
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Repository::openWithKey($backend, $keys)->restore($b['snapshot'], $target);
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$this->assertSame(self::hashTree($src), self::hashTree($target));
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}
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}
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