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#pragma clang system_header
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#pragma once
#include <memory>
#include <vector>
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/io/type_fwd.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/result.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/type_fwd.h"
namespace arrow20 {
namespace io {
struct ReadRange;
}
namespace ipc {
namespace internal {
/// \class IoRecordedRandomAccessFile
/// \brief An RandomAccessFile that doesn't perform real IO, but only save all the IO
/// operations it receives, including read operation's <offset, length>, for replaying
/// later
class ARROW_EXPORT IoRecordedRandomAccessFile : public io::RandomAccessFile {
public:
explicit IoRecordedRandomAccessFile(const int64_t file_size)
: file_size_(file_size), position_(0) {}
Status Close() override;
Status Abort() override;
/// \brief Return the position in this stream
Result<int64_t> Tell() const override;
/// \brief Return whether the stream is closed
bool closed() const override;
Status Seek(int64_t position) override;
Result<int64_t> GetSize() override;
Result<int64_t> ReadAt(int64_t position, int64_t nbytes, void* out) override;
Result<std::shared_ptr<Buffer>> ReadAt(int64_t position, int64_t nbytes) override;
Result<int64_t> Read(int64_t nbytes, void* out) override;
Result<std::shared_ptr<Buffer>> Read(int64_t nbytes) override;
const io::IOContext& io_context() const override;
/// \brief Return a vector containing all the read operations this file receives, each
/// read operation is represented as an arrow20::io::ReadRange
///
/// \return a vector
const std::vector<io::ReadRange>& GetReadRanges() const;
private:
const int64_t file_size_;
std::vector<io::ReadRange> read_ranges_;
int64_t position_;
bool closed_ = false;
io::IOContext io_context_;
};
} // namespace internal
} // namespace ipc
} // namespace arrow20
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