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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 NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_
#define NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_
#include "base/compiler_specific.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "net/base/upload_element_reader.h"
namespace base {
class TaskRunner;
}
namespace net {
class FileStream;
// An UploadElementReader implementation for file.
class NET_EXPORT UploadFileElementReader : public UploadElementReader {
public:
// |task_runner| is used to perform file operations. It must not be NULL.
UploadFileElementReader(base::TaskRunner* task_runner,
const base::FilePath& path,
uint64 range_offset,
uint64 range_length,
const base::Time& expected_modification_time);
~UploadFileElementReader() override;
const base::FilePath& path() const { return path_; }
uint64 range_offset() const { return range_offset_; }
uint64 range_length() const { return range_length_; }
const base::Time& expected_modification_time() const {
return expected_modification_time_;
}
// UploadElementReader overrides:
const UploadFileElementReader* AsFileReader() const override;
int Init(const CompletionCallback& callback) override;
uint64 GetContentLength() const override;
uint64 BytesRemaining() const override;
int Read(IOBuffer* buf,
int buf_length,
const CompletionCallback& callback) override;
private:
FRIEND_TEST_ALL_PREFIXES(ElementsUploadDataStreamTest, FileSmallerThanLength);
FRIEND_TEST_ALL_PREFIXES(HttpNetworkTransactionTest,
UploadFileSmallerThanLength);
// Resets this instance to the uninitialized state.
void Reset();
// These methods are used to implement Init().
void OnOpenCompleted(const CompletionCallback& callback, int result);
void OnSeekCompleted(const CompletionCallback& callback, int64 result);
void OnGetFileInfoCompleted(const CompletionCallback& callback,
base::File::Info* file_info,
bool result);
// This method is used to implement Read().
int OnReadCompleted(const CompletionCallback& callback, int result);
// Sets an value to override the result for GetContentLength().
// Used for tests.
struct NET_EXPORT_PRIVATE ScopedOverridingContentLengthForTests {
ScopedOverridingContentLengthForTests(uint64 value);
~ScopedOverridingContentLengthForTests();
};
scoped_refptr<base::TaskRunner> task_runner_;
const base::FilePath path_;
const uint64 range_offset_;
const uint64 range_length_;
const base::Time expected_modification_time_;
scoped_ptr<FileStream> file_stream_;
uint64 content_length_;
uint64 bytes_remaining_;
base::WeakPtrFactory<UploadFileElementReader> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(UploadFileElementReader);
};
} // namespace net
#endif // NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_
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