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// Copyright (c) 2012 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.
#ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_METADATA_STORE_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_METADATA_STORE_H_
#include "base/callback_forward.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/non_thread_safe.h"
namespace base {
class SequencedTaskRunner;
}
namespace fileapi {
class FileSystemURL;
}
namespace gdata {
class DocumentFeed;
}
class FilePath;
class GURL;
namespace sync_file_system {
class RemoteMetadataDatabase;
// This class holds snapshot of server side metadata..
class RemoteMetadataStore
: public base::NonThreadSafe,
public base::SupportsWeakPtr<RemoteMetadataStore> {
public:
typedef base::Callback<void(bool success, bool has_cache)>
InitializationCallback;
RemoteMetadataStore(const FilePath& base_dir,
base::SequencedTaskRunner* file_task_runner);
~RemoteMetadataStore();
void InitializeFromDiskCache(const InitializationCallback& callback);
void InitializeWithDocumentFeed(scoped_ptr<gdata::DocumentFeed> feed,
const InitializationCallback& callback);
void SetLargestChangeStamp(int64 largest_changestamp);
int64 GetLargestChangeStamp() const;
void ApplyChangeFeed(scoped_ptr<gdata::DocumentFeed> feed);
std::string GetResourceId(const fileapi::FileSystemURL& url) const;
std::string GetETag(const fileapi::FileSystemURL& url) const;
GURL GetDownloadURL(const fileapi::FileSystemURL& url) const;
GURL GetUploadURL(const fileapi::FileSystemURL& url) const;
private:
scoped_ptr<RemoteMetadataDatabase> db_;
scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
bool db_disabled_;
int64 largest_changestamp_;
DISALLOW_COPY_AND_ASSIGN(RemoteMetadataStore);
};
} // namespace sync_file_system
#endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_METADATA_STORE_H_
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