/**
* @param string $internalPath
* @param int $time
* @return array[] all propagated entries
*/
public function propagateChange($internalPath, $time)
{
$cache = $this->storage->getCache($internalPath);
$parentId = $cache->getParentId($internalPath);
$propagatedEntries = [];
while ($parentId !== -1) {
$entry = $cache->get($parentId);
$propagatedEntries[] = $entry;
if (!$entry) {
return $propagatedEntries;
}
$mtime = max($time, $entry['mtime']);
$cache->update($parentId, ['mtime' => $mtime, 'etag' => $this->storage->getETag($entry['path'])]);
$parentId = $entry['parent'];
}
return $propagatedEntries;
}
/**
* get all the metadata of a file or folder
* *
*
* @param string $path
* @return array with metadata of the file
*/
public function getData($path)
{
if (!$this->storage->isReadable($path)) {
//cant read, nothing we can do
\OCP\Util::writeLog('OC\\Files\\Cache\\Scanner', "!!! Path '{$path}' is not readable !!!", \OCP\Util::DEBUG);
return null;
}
$data = array();
$data['mimetype'] = $this->storage->getMimeType($path);
$data['mtime'] = $this->storage->filemtime($path);
if ($data['mimetype'] == 'httpd/unix-directory') {
$data['size'] = -1;
//unknown
} else {
$data['size'] = $this->storage->filesize($path);
}
$data['etag'] = $this->storage->getETag($path);
$data['storage_mtime'] = $data['mtime'];
return $data;
}
/**
* @param string $internalPath
* @param int $time
* @param int $sizeDifference number of bytes the file has grown
* @return array[] all propagated entries
*/
public function propagateChange($internalPath, $time, $sizeDifference = 0)
{
$cache = $this->storage->getCache($internalPath);
$parentId = $cache->getParentId($internalPath);
$propagatedEntries = [];
while ($parentId !== -1) {
$entry = $cache->get($parentId);
$propagatedEntries[] = $entry;
if (!$entry) {
return $propagatedEntries;
}
$mtime = max($time, $entry['mtime']);
if ($entry['size'] === -1) {
$newSize = -1;
} else {
$newSize = $entry['size'] + $sizeDifference;
}
$cache->update($parentId, ['mtime' => $mtime, 'etag' => $this->storage->getETag($entry['path']), 'size' => $newSize]);
$parentId = $entry['parent'];
}
return $propagatedEntries;
}
/**
* get all the metadata of a file or folder
* *
*
* @param string $path
* @return array an array of metadata of the file
*/
public function getData($path)
{
$permissions = $this->storage->getPermissions($path);
if (!$permissions & \OCP\PERMISSION_READ) {
//cant read, nothing we can do
\OCP\Util::writeLog('OC\\Files\\Cache\\Scanner', "!!! Path '{$path}' is not accessible or present !!!", \OCP\Util::DEBUG);
return null;
}
$data = array();
$data['mimetype'] = $this->storage->getMimeType($path);
$data['mtime'] = $this->storage->filemtime($path);
if ($data['mimetype'] == 'httpd/unix-directory') {
$data['size'] = -1;
//unknown
} else {
$data['size'] = $this->storage->filesize($path);
}
$data['etag'] = $this->storage->getETag($path);
$data['storage_mtime'] = $data['mtime'];
$data['permissions'] = $permissions;
return $data;
}
/**
* scan a single file and store it in the cache
*
* @param string $file
* @param int $reuseExisting
* @param bool $parentExistsInCache
* @return array with metadata of the scanned file
*/
public function scanFile($file, $reuseExisting = 0, $parentExistsInCache = false)
{
if (!self::isPartialFile($file) and !Filesystem::isFileBlacklisted($file)) {
$this->emit('\\OC\\Files\\Cache\\Scanner', 'scanFile', array($file, $this->storageId));
\OC_Hook::emit('\\OC\\Files\\Cache\\Scanner', 'scan_file', array('path' => $file, 'storage' => $this->storageId));
$data = $this->getData($file);
if ($data) {
if ($file and !$parentExistsInCache) {
$parent = dirname($file);
if ($parent === '.' or $parent === '/') {
$parent = '';
}
if (!$this->cache->inCache($parent)) {
$this->scanFile($parent);
}
}
$newData = $data;
$cacheData = $this->cache->get($file);
if ($cacheData) {
if (isset($cacheData['fileid'])) {
$this->permissionsCache->remove($cacheData['fileid']);
}
if ($reuseExisting) {
// prevent empty etag
$etag = $cacheData['etag'];
$propagateETagChange = false;
if (empty($etag)) {
$etag = $data['etag'];
$propagateETagChange = true;
}
// only reuse data if the file hasn't explicitly changed
if (isset($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'] = $etag;
if ($propagateETagChange) {
$parent = $file;
while ($parent !== '') {
$parent = dirname($parent);
if ($parent === '.') {
$parent = '';
}
$parentCacheData = $this->cache->get($parent);
$this->cache->update($parentCacheData['fileid'], array('etag' => $this->storage->getETag($parent)));
}
}
}
}
// Only update metadata that has changed
$newData = array_diff_assoc($data, $cacheData);
if (isset($newData['etag'])) {
$cacheDataString = print_r($cacheData, true);
$dataString = print_r($data, true);
\OCP\Util::writeLog('OC\\Files\\Cache\\Scanner', "!!! No reuse of etag for '{$file}' !!! \ncache: {$cacheDataString} \ndata: {$dataString}", \OCP\Util::DEBUG);
}
}
}
if (!empty($newData)) {
$this->cache->put($file, $newData);
$this->emit('\\OC\\Files\\Cache\\Scanner', 'postScanFile', array($file, $this->storageId));
\OC_Hook::emit('\\OC\\Files\\Cache\\Scanner', 'post_scan_file', array('path' => $file, 'storage' => $this->storageId));
}
} else {
$this->cache->remove($file);
}
return $data;
}
return null;
}
/**
* get the ETag for a file or folder
*
* @param string $path
* @return string
*/
public function getETag($path)
{
return $this->storage->getETag($path);
}
