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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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_IMPL_H_
#define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_IMPL_H_
#include <stdint.h>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "storage/browser/blob/scoped_file.h"
#include "storage/browser/fileapi/file_system_operation.h"
#include "storage/browser/fileapi/file_system_operation_context.h"
#include "storage/browser/fileapi/file_system_url.h"
#include "storage/browser/fileapi/file_writer_delegate.h"
#include "storage/browser/storage_browser_export.h"
#include "storage/common/quota/quota_types.h"
namespace storage {
class AsyncFileUtil;
class FileSystemContext;
class RecursiveOperationDelegate;
// The default implementation of FileSystemOperation for file systems.
class STORAGE_EXPORT FileSystemOperationImpl
: public NON_EXPORTED_BASE(FileSystemOperation) {
public:
~FileSystemOperationImpl() override;
// FileSystemOperation overrides.
void CreateFile(const FileSystemURL& url,
bool exclusive,
const StatusCallback& callback) override;
void CreateDirectory(const FileSystemURL& url,
bool exclusive,
bool recursive,
const StatusCallback& callback) override;
void Copy(const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
ErrorBehavior error_behavior,
const CopyProgressCallback& progress_callback,
const StatusCallback& callback) override;
void Move(const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
const StatusCallback& callback) override;
void DirectoryExists(const FileSystemURL& url,
const StatusCallback& callback) override;
void FileExists(const FileSystemURL& url,
const StatusCallback& callback) override;
void GetMetadata(const FileSystemURL& url,
int fields,
const GetMetadataCallback& callback) override;
void ReadDirectory(const FileSystemURL& url,
const ReadDirectoryCallback& callback) override;
void Remove(const FileSystemURL& url,
bool recursive,
const StatusCallback& callback) override;
void Write(const FileSystemURL& url,
scoped_ptr<FileWriterDelegate> writer_delegate,
scoped_ptr<net::URLRequest> blob_request,
const WriteCallback& callback) override;
void Truncate(const FileSystemURL& url,
int64_t length,
const StatusCallback& callback) override;
void TouchFile(const FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
const StatusCallback& callback) override;
void OpenFile(const FileSystemURL& url,
int file_flags,
const OpenFileCallback& callback) override;
void Cancel(const StatusCallback& cancel_callback) override;
void CreateSnapshotFile(const FileSystemURL& path,
const SnapshotFileCallback& callback) override;
void CopyInForeignFile(const base::FilePath& src_local_disk_path,
const FileSystemURL& dest_url,
const StatusCallback& callback) override;
void RemoveFile(const FileSystemURL& url,
const StatusCallback& callback) override;
void RemoveDirectory(const FileSystemURL& url,
const StatusCallback& callback) override;
void CopyFileLocal(const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
const CopyFileProgressCallback& progress_callback,
const StatusCallback& callback) override;
void MoveFileLocal(const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
const StatusCallback& callback) override;
base::File::Error SyncGetPlatformPath(const FileSystemURL& url,
base::FilePath* platform_path) override;
FileSystemContext* file_system_context() const {
return file_system_context_.get();
}
private:
friend class FileSystemOperation;
FileSystemOperationImpl(
const FileSystemURL& url,
FileSystemContext* file_system_context,
scoped_ptr<FileSystemOperationContext> operation_context);
// Queries the quota and usage and then runs the given |task|.
// If an error occurs during the quota query it runs |error_callback| instead.
void GetUsageAndQuotaThenRunTask(
const FileSystemURL& url,
const base::Closure& task,
const base::Closure& error_callback);
// Called after the quota info is obtained from the quota manager
// (which is triggered by GetUsageAndQuotaThenRunTask).
// Sets the quota info in the operation_context_ and then runs the given
// |task| if the returned quota status is successful, otherwise runs
// |error_callback|.
void DidGetUsageAndQuotaAndRunTask(const base::Closure& task,
const base::Closure& error_callback,
storage::QuotaStatusCode status,
int64_t usage,
int64_t quota);
// The 'body' methods that perform the actual work (i.e. posting the
// file task on proxy_) after the quota check.
void DoCreateFile(const FileSystemURL& url,
const StatusCallback& callback, bool exclusive);
void DoCreateDirectory(const FileSystemURL& url,
const StatusCallback& callback,
bool exclusive,
bool recursive);
void DoCopyFileLocal(const FileSystemURL& src,
const FileSystemURL& dest,
CopyOrMoveOption option,
const CopyFileProgressCallback& progress_callback,
const StatusCallback& callback);
void DoMoveFileLocal(const FileSystemURL& src,
const FileSystemURL& dest,
CopyOrMoveOption option,
const StatusCallback& callback);
void DoCopyInForeignFile(const base::FilePath& src_local_disk_file_path,
const FileSystemURL& dest,
const StatusCallback& callback);
void DoTruncate(const FileSystemURL& url,
const StatusCallback& callback,
int64_t length);
void DoOpenFile(const FileSystemURL& url,
const OpenFileCallback& callback, int file_flags);
// Callback for CreateFile for |exclusive|=true cases.
void DidEnsureFileExistsExclusive(const StatusCallback& callback,
base::File::Error rv,
bool created);
// Callback for CreateFile for |exclusive|=false cases.
void DidEnsureFileExistsNonExclusive(const StatusCallback& callback,
base::File::Error rv,
bool created);
void DidFinishOperation(const StatusCallback& callback,
base::File::Error rv);
void DidDirectoryExists(const StatusCallback& callback,
base::File::Error rv,
const base::File::Info& file_info);
void DidFileExists(const StatusCallback& callback,
base::File::Error rv,
const base::File::Info& file_info);
void DidDeleteRecursively(const FileSystemURL& url,
const StatusCallback& callback,
base::File::Error rv);
void DidWrite(const FileSystemURL& url,
const WriteCallback& callback,
base::File::Error rv,
int64_t bytes,
FileWriterDelegate::WriteProgressStatus write_status);
// Used only for internal assertions.
// Returns false if there's another inflight pending operation.
bool SetPendingOperationType(OperationType type);
scoped_refptr<FileSystemContext> file_system_context_;
scoped_ptr<FileSystemOperationContext> operation_context_;
AsyncFileUtil* async_file_util_; // Not owned.
scoped_ptr<FileWriterDelegate> file_writer_delegate_;
scoped_ptr<RecursiveOperationDelegate> recursive_operation_delegate_;
StatusCallback cancel_callback_;
// A flag to make sure we call operation only once per instance.
OperationType pending_operation_;
base::WeakPtrFactory<FileSystemOperationImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(FileSystemOperationImpl);
};
} // namespace storage
#endif // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_IMPL_H_