SyncFS: Introduce SyncFileSystemBackend

webkit/browser/fileapi/syncable/canned_syncable_file_system.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/browser/fileapi/syncable/canned_syncable_file_system.h"
 
 #include <iterator>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task_runner_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/browser/blob/mock_blob_url_request_context.h"
 #include "webkit/browser/fileapi/external_mount_points.h"
 #include "webkit/browser/fileapi/file_system_backend.h"
 #include "webkit/browser/fileapi/file_system_context.h"
 #include "webkit/browser/fileapi/file_system_operation_context.h"
 #include "webkit/browser/fileapi/file_system_operation_runner.h"
 #include "webkit/browser/fileapi/file_system_task_runners.h"
 #include "webkit/browser/fileapi/mock_file_system_options.h"
 #include "webkit/browser/fileapi/sandbox_file_system_backend.h"
 #include "webkit/browser/fileapi/syncable/local_file_change_tracker.h"
 #include "webkit/browser/fileapi/syncable/local_file_sync_context.h"
+#include "webkit/browser/fileapi/syncable/sync_file_system_backend.h"
 #include "webkit/browser/fileapi/syncable/syncable_file_system_util.h"
 #include "webkit/browser/quota/mock_special_storage_policy.h"
 #include "webkit/browser/quota/quota_manager.h"
 #include "webkit/common/blob/shareable_file_reference.h"
 
 using base::PlatformFileError;
 using fileapi::FileSystemContext;
 using fileapi::FileSystemOperationRunner;
 using fileapi::FileSystemURL;
 using fileapi::FileSystemURLSet;
@@ skipping 187 matching lines @@
                                     io_task_runner_.get(),
                                     base::MessageLoopProxy::current().get(),
                                     storage_policy.get());
 
   std::vector<std::string> additional_allowed_schemes;
   additional_allowed_schemes.push_back(origin_.scheme());
   fileapi::FileSystemOptions options(
       fileapi::FileSystemOptions::PROFILE_MODE_NORMAL,
       additional_allowed_schemes);
 
+  ScopedVector<fileapi::FileSystemBackend> additional_backends;
+  additional_backends.push_back(new SyncFileSystemBackend(
+      file_task_runner_.get(), options));
+
   file_system_context_ = new FileSystemContext(
       make_scoped_ptr(
           new fileapi::FileSystemTaskRunners(io_task_runner_.get(),
                                              file_task_runner_.get())),
       fileapi::ExternalMountPoints::CreateRefCounted().get(),
       storage_policy.get(),
       quota_manager_->proxy(),
-      ScopedVector<fileapi::FileSystemBackend>(),
+      additional_backends.Pass(),
       data_dir_.path(), options);
 
   is_filesystem_set_up_ = true;
 }
 
 void CannedSyncableFileSystem::TearDown() {
   quota_manager_ = NULL;
   file_system_context_ = NULL;
 
   // Make sure we give some more time to finish tasks on other threads.
@@ skipping 11 matching lines @@
 
 PlatformFileError CannedSyncableFileSystem::OpenFileSystem() {
   EXPECT_TRUE(is_filesystem_set_up_);
   EXPECT_FALSE(is_filesystem_opened_);
   file_system_context_->OpenFileSystem(
       origin_, type_,
       fileapi::OPEN_FILE_SYSTEM_CREATE_IF_NONEXISTENT,
       base::Bind(&CannedSyncableFileSystem::DidOpenFileSystem,
                  base::Unretained(this)));
   base::MessageLoop::current()->Run();
-  if (file_system_context_->sync_context()) {
+  if (backend()->sync_context()) {
     // Register 'this' as a sync status observer.
     RunOnThread(
         io_task_runner_.get(),
         FROM_HERE,
         base::Bind(&CannedSyncableFileSystem::InitializeSyncStatusObserver,
                    base::Unretained(this)));
   }
   return result_;
 }
 
@@ skipping 201 matching lines @@
                  usage,
                  quota));
 }
 
 void CannedSyncableFileSystem::GetChangedURLsInTracker(
     FileSystemURLSet* urls) {
   return RunOnThread(
       file_task_runner_.get(),
       FROM_HERE,
       base::Bind(&LocalFileChangeTracker::GetAllChangedURLs,
-                 base::Unretained(file_system_context_->change_tracker()),
+                 base::Unretained(backend()->change_tracker()),
                  urls));
 }
 
 void CannedSyncableFileSystem::ClearChangeForURLInTracker(
     const FileSystemURL& url) {
   return RunOnThread(
       file_task_runner_.get(),
       FROM_HERE,
       base::Bind(&LocalFileChangeTracker::ClearChangesForURL,
-                 base::Unretained(file_system_context_->change_tracker()),
+                 base::Unretained(backend()->change_tracker()),
                  url));
 }
 
+SyncFileSystemBackend* CannedSyncableFileSystem::backend() {
+  return SyncFileSystemBackend::GetBackend(file_system_context_);
+}
+
 FileSystemOperationRunner* CannedSyncableFileSystem::operation_runner() {
   return file_system_context_->operation_runner();
 }
 
 void CannedSyncableFileSystem::OnSyncEnabled(const FileSystemURL& url) {
   sync_status_observers_->Notify(&LocalFileSyncStatus::Observer::OnSyncEnabled,
                                  url);
 }
 
 void CannedSyncableFileSystem::OnWriteEnabled(const FileSystemURL& url) {
@@ skipping 139 matching lines @@
 }
 
 void CannedSyncableFileSystem::DidInitializeFileSystemContext(
     SyncStatusCode status) {
   sync_status_ = status;
   base::MessageLoop::current()->Quit();
 }
 
 void CannedSyncableFileSystem::InitializeSyncStatusObserver() {
   ASSERT_TRUE(io_task_runner_->RunsTasksOnCurrentThread());
-  file_system_context_->sync_context()->sync_status()->AddObserver(this);
+  backend()->sync_context()->sync_status()->AddObserver(this);
 }
 
 }  // namespace sync_file_system