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recreate an etag within the scanner if the cache contains an empty etag

This commit is contained in:
Thomas Müller 2013-09-16 12:09:15 +02:00
parent 46f59b165e
commit 3c026b7cf6
2 changed files with 24 additions and 1 deletions
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8
lib/files/cache/scanner.php vendored
View File

@ -97,13 +97,19 @@ class Scanner extends BasicEmitter {
}
$newData = $data;
if ($reuseExisting and $cacheData = $this->cache->get($file)) {
// prevent empty etag
$etag = $cacheData['etag'];
if (empty($etag)) {
$etag = $data['etag'];
}
// only reuse data if the file hasn't explicitly changed
if (isset($data['mtime']) && isset($cacheData['mtime']) && $data['mtime'] === $cacheData['mtime']) {
if (($reuseExisting & self::REUSE_SIZE) && ($data['size'] === -1)) {
$data['size'] = $cacheData['size'];
}
if ($reuseExisting & self::REUSE_ETAG) {
$data['etag'] = $cacheData['etag'];
$data['etag'] = $etag;
}
}
// Only update metadata that has changed

17
tests/lib/files/cache/scanner.php vendored
View File

@ -184,6 +184,23 @@ class Scanner extends \PHPUnit_Framework_TestCase {
$this->assertFalse($this->cache->inCache('folder/bar.txt'));
}
public function testETagRecreation() {
$this->fillTestFolders();
$this->scanner->scan('');
// manipulate etag to simulate an empty etag
$this->scanner->scan('', \OC\Files\Cache\Scanner::SCAN_SHALLOW, \OC\Files\Cache\Scanner::REUSE_ETAG);
$data['etag'] = '';
$this->cache->put('', $data);
// rescan
$this->scanner->scan('', \OC\Files\Cache\Scanner::SCAN_SHALLOW, \OC\Files\Cache\Scanner::REUSE_ETAG);
$newData = $this->cache->get('');
$this->assertNotEmpty($newData['etag']);
}
function setUp() {
$this->storage = new \OC\Files\Storage\Temporary(array());
$this->scanner = new \OC\Files\Cache\Scanner($this->storage);