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// 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.
#ifndef CHROME_BROWSER_CHROMEOS_DRIVE_DEBUG_INFO_COLLECTOR_H_
#define CHROME_BROWSER_CHROMEOS_DRIVE_DEBUG_INFO_COLLECTOR_H_
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/threading/thread_checker.h"
#include "chrome/browser/chromeos/drive/file_system_interface.h"
namespace drive {
// This class provides some methods which are useful to show the debug
// info on chrome://drive-internals page.
// All the method should be called on UI thread.
class DebugInfoCollector {
public:
// Callback for ReadDirectory().
typedef base::Callback<void(FileError error,
scoped_ptr<ResourceEntryVector> entries)>
ReadDirectoryCallback;
// Callback for IterateFileCache().
typedef base::Callback<void(const std::string& id,
const FileCacheEntry& cache_entry)>
IterateFileCacheCallback;
DebugInfoCollector(internal::ResourceMetadata* metadata,
FileSystemInterface* file_system,
base::SequencedTaskRunner* blocking_task_runner);
~DebugInfoCollector();
// Finds a locally stored entry (a file or a directory) by |file_path|.
// |callback| must not be null.
void GetResourceEntry(const base::FilePath& file_path,
const GetResourceEntryCallback& callback);
// Finds and reads a directory by |file_path|.
// |callback| must not be null.
void ReadDirectory(const base::FilePath& file_path,
const ReadDirectoryCallback& callback);
// Iterates all files in the file cache and calls |iteration_callback| for
// each file. |completion_callback| is run upon completion.
// |iteration_callback| and |completion_callback| must not be null.
void IterateFileCache(const IterateFileCacheCallback& iteration_callback,
const base::Closure& completion_callback);
// Returns miscellaneous metadata of the file system like the largest
// timestamp. |callback| must not be null.
void GetMetadata(const GetFilesystemMetadataCallback& callback);
private:
internal::ResourceMetadata* metadata_; // No owned.
FileSystemInterface* file_system_; // Not owned.
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(DebugInfoCollector);
};
} // namespace drive
#endif // CHROME_BROWSER_CHROMEOS_DRIVE_DEBUG_INFO_COLLECTOR_H_
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