on_disk_directory_backing_store.h revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef SYNC_SYNCABLE_ON_DISK_DIRECTORY_BACKING_STORE_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define SYNC_SYNCABLE_ON_DISK_DIRECTORY_BACKING_STORE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/file_path.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "sync/syncable/directory_backing_store.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace syncer { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace syncable { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This is the concrete class that provides a useful implementation of 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// DirectoryBackingStore. 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class OnDiskDirectoryBackingStore : public DirectoryBackingStore { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnDiskDirectoryBackingStore(const std::string& dir_name, 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const FilePath& backing_filepath); 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~OnDiskDirectoryBackingStore(); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual DirOpenResult Load( 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MetahandlesIndex* entry_bucket, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Directory::KernelLoadInfo* kernel_load_info) OVERRIDE; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A helper function that will make one attempt to load the directory. 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Unlike Load(), it does not attempt to recover from failure. 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DirOpenResult TryLoad( 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MetahandlesIndex* entry_bucket, 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Directory::KernelLoadInfo* kernel_load_info); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Subclasses may override this to avoid a possible DCHECK. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void ReportFirstTryOpenFailure(); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FRIEND_TEST_ALL_PREFIXES(DirectoryBackingStoreTest, MinorCorruption); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool allow_failure_for_test_; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath backing_filepath_; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace syncable 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace syncer 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // SYNC_SYNCABLE_ON_DISK_DIRECTORY_BACKING_STORE_H_ 46