PHP Cache::getId方法代码示例

 /**
  * scan a single file and store it in the cache
  *
  * @param string $file
  * @param int $reuseExisting
  * @return array an array of metadata of the scanned file
  */
 public function scanFile($file, $reuseExisting = 0)
 {
     if (!self::isPartialFile($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) {
             $parent = dirname($file);
             if ($parent === '.' or $parent === '/') {
                 $parent = '';
             }
             $parentId = $this->cache->getId($parent);
             // scan the parent if it's not in the cache (id -1) and the current file is not the root folder
             if ($file and $parentId === -1) {
                 $parentData = $this->scanFile($parent);
                 $parentId = $parentData['fileid'];
             }
             if ($parent) {
                 $data['parent'] = $parentId;
             }
             $cacheData = $this->cache->get($file);
             if ($cacheData and $reuseExisting) {
                 // prevent empty etag
                 if (empty($cacheData['etag'])) {
                     $etag = $data['etag'];
                 } else {
                     $etag = $cacheData['etag'];
                 }
                 // only reuse data if the file hasn't explicitly changed
                 if (isset($data['storage_mtime']) && isset($cacheData['storage_mtime']) && $data['storage_mtime'] === $cacheData['storage_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;
                     }
                 }
                 // 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);
                 }
             } else {
                 $newData = $data;
             }
             if (!empty($newData)) {
                 $data['fileid'] = $this->addToCache($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 {
             $this->removeFromCache($file);
         }
         return $data;
     }
     return null;
 }

 private function updateStorageMTimeOnly($internalPath)
 {
     $fileId = $this->cache->getId($internalPath);
     if ($fileId !== -1) {
         $this->cache->update($fileId, ['mtime' => null, 'storage_mtime' => $this->storage->filemtime($internalPath)]);
     }
 }

 /**
  * scan all the files and folders in a folder
  *
  * @param string $path
  * @param bool $recursive
  * @param int $reuse
  * @param int $folderId id for the folder to be scanned
  * @param bool $lock set to false to disable getting an additional read lock during scanning
  * @return int the size of the scanned folder or -1 if the size is unknown at this stage
  */
 protected function scanChildren($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $folderId = null, $lock = true)
 {
     if ($reuse === -1) {
         $reuse = $recursive === self::SCAN_SHALLOW ? self::REUSE_ETAG | self::REUSE_SIZE : self::REUSE_ETAG;
     }
     $this->emit('\\OC\\Files\\Cache\\Scanner', 'scanFolder', array($path, $this->storageId));
     $size = 0;
     if (!is_null($folderId)) {
         $folderId = $this->cache->getId($path);
     }
     $childQueue = $this->handleChildren($path, $recursive, $reuse, $folderId, $lock, $size);
     foreach ($childQueue as $child => $childId) {
         $childSize = $this->scanChildren($child, $recursive, $reuse, $childId, $lock);
         if ($childSize === -1) {
             $size = -1;
         } else {
             if ($size !== -1) {
                 $size += $childSize;
             }
         }
     }
     if ($this->cacheActive) {
         $this->cache->update($folderId, array('size' => $size));
     }
     $this->emit('\\OC\\Files\\Cache\\Scanner', 'postScanFolder', array($path, $this->storageId));
     return $size;
 }

	public function testSimple() {
		$file1 = 'foo';
		$file2 = 'foo/bar';
		$data1 = array('size' => 100, 'mtime' => 50, 'mimetype' => 'foo/folder');
		$data2 = array('size' => 1000, 'mtime' => 20, 'mimetype' => 'foo/file');

		$this->assertFalse($this->cache->inCache($file1));
		$this->assertEquals($this->cache->get($file1), null);

		$id1 = $this->cache->put($file1, $data1);
		$this->assertTrue($this->cache->inCache($file1));
		$cacheData1 = $this->cache->get($file1);
		foreach ($data1 as $key => $value) {
			$this->assertEquals($value, $cacheData1[$key]);
		}
		$this->assertEquals($cacheData1['mimepart'], 'foo');
		$this->assertEquals($cacheData1['fileid'], $id1);
		$this->assertEquals($id1, $this->cache->getId($file1));

		$this->assertFalse($this->cache->inCache($file2));
		$id2 = $this->cache->put($file2, $data2);
		$this->assertTrue($this->cache->inCache($file2));
		$cacheData2 = $this->cache->get($file2);
		foreach ($data2 as $key => $value) {
			$this->assertEquals($value, $cacheData2[$key]);
		}
		$this->assertEquals($cacheData1['fileid'], $cacheData2['parent']);
		$this->assertEquals($cacheData2['fileid'], $id2);
		$this->assertEquals($id2, $this->cache->getId($file2));
		$this->assertEquals($id1, $this->cache->getParentId($file2));

		$newSize = 1050;
		$newId2 = $this->cache->put($file2, array('size' => $newSize));
		$cacheData2 = $this->cache->get($file2);
		$this->assertEquals($newId2, $id2);
		$this->assertEquals($cacheData2['size'], $newSize);
		$this->assertEquals($cacheData1, $this->cache->get($file1));

		$this->cache->remove($file2);
		$this->assertFalse($this->cache->inCache($file2));
		$this->assertEquals($this->cache->get($file2), null);
		$this->assertTrue($this->cache->inCache($file1));

		$this->assertEquals($cacheData1, $this->cache->get($id1));
	}

 public function testRepairParentShallow()
 {
     $this->fillTestFolders();
     $this->scanner->scan('');
     $this->assertTrue($this->cache->inCache('folder/bar.txt'));
     $oldFolderId = $this->cache->getId('folder');
     // delete the folder without removing the childs
     $sql = 'DELETE FROM `*PREFIX*filecache` WHERE `fileid` = ?';
     \OC_DB::executeAudited($sql, array($oldFolderId));
     $cachedData = $this->cache->get('folder/bar.txt');
     $this->assertEquals($oldFolderId, $cachedData['parent']);
     $this->assertFalse($this->cache->inCache('folder'));
     $this->scanner->scan('folder', \OC\Files\Cache\Scanner::SCAN_SHALLOW);
     $this->assertTrue($this->cache->inCache('folder'));
     $newFolderId = $this->cache->getId('folder');
     $this->assertNotEquals($oldFolderId, $newFolderId);
     $cachedData = $this->cache->get('folder/bar.txt');
     $this->assertEquals($newFolderId, $cachedData['parent']);
 }

 /**
  * scan all the files and folders in a folder
  *
  * @param string $path
  * @param bool $recursive
  * @param int $reuse
  * @param array $folderData existing cache data for the folder to be scanned
  * @param bool $lock set to false to disable getting an additional read lock during scanning
  * @return int the size of the scanned folder or -1 if the size is unknown at this stage
  */
 protected function scanChildren($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $folderData = null, $lock = true)
 {
     if ($reuse === -1) {
         $reuse = $recursive === self::SCAN_SHALLOW ? self::REUSE_ETAG | self::REUSE_SIZE : self::REUSE_ETAG;
     }
     $this->emit('\\OC\\Files\\Cache\\Scanner', 'scanFolder', array($path, $this->storageId));
     $size = 0;
     $childQueue = array();
     if (is_array($folderData) and isset($folderData['fileid'])) {
         $folderId = $folderData['fileid'];
     } else {
         $folderId = $this->cache->getId($path);
     }
     $existingChildren = $this->getExistingChildren($folderId);
     $newChildren = $this->getNewChildren($path);
     if ($this->useTransactions) {
         \OC::$server->getDatabaseConnection()->beginTransaction();
     }
     $exceptionOccurred = false;
     foreach ($newChildren as $file) {
         $child = $path ? $path . '/' . $file : $file;
         try {
             $existingData = isset($existingChildren[$file]) ? $existingChildren[$file] : null;
             $data = $this->scanFile($child, $reuse, $folderId, $existingData, $lock);
             if ($data) {
                 if ($data['mimetype'] === 'httpd/unix-directory' and $recursive === self::SCAN_RECURSIVE) {
                     $childQueue[$child] = $data;
                 } else {
                     if ($data['size'] === -1) {
                         $size = -1;
                     } else {
                         if ($size !== -1) {
                             $size += $data['size'];
                         }
                     }
                 }
             }
         } catch (\Doctrine\DBAL\DBALException $ex) {
             // might happen if inserting duplicate while a scanning
             // process is running in parallel
             // log and ignore
             \OCP\Util::writeLog('core', 'Exception while scanning file "' . $child . '": ' . $ex->getMessage(), \OCP\Util::DEBUG);
             $exceptionOccurred = true;
         } catch (\OCP\Lock\LockedException $e) {
             if ($this->useTransactions) {
                 \OC::$server->getDatabaseConnection()->rollback();
             }
             throw $e;
         }
     }
     $removedChildren = \array_diff(array_keys($existingChildren), $newChildren);
     foreach ($removedChildren as $childName) {
         $child = $path ? $path . '/' . $childName : $childName;
         $this->removeFromCache($child);
     }
     if ($this->useTransactions) {
         \OC::$server->getDatabaseConnection()->commit();
     }
     if ($exceptionOccurred) {
         // It might happen that the parallel scan process has already
         // inserted mimetypes but those weren't available yet inside the transaction
         // To make sure to have the updated mime types in such cases,
         // we reload them here
         \OC::$server->getMimeTypeLoader()->reset();
     }
     foreach ($childQueue as $child => $childData) {
         $childSize = $this->scanChildren($child, self::SCAN_RECURSIVE, $reuse, $childData, $lock);
         if ($childSize === -1) {
             $size = -1;
         } else {
             if ($size !== -1) {
                 $size += $childSize;
             }
         }
     }
     if (!is_array($folderData) or !isset($folderData['size']) or $folderData['size'] !== $size) {
         $this->updateCache($path, array('size' => $size), $folderId);
     }
     $this->emit('\\OC\\Files\\Cache\\Scanner', 'postScanFolder', array($path, $this->storageId));
     return $size;
 }

 /**
  * get the file id for a file
  *
  * @param string $file
  * @return int
  */
 public function getId($file)
 {
     return $this->cache->getId($file);
 }