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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
/*
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* Copyright (C) 2018-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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*/
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#include <seastar/core/iostream.hh>
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#include <seastar/core/temporary_buffer.hh>
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#include <seastar/util/memory-data-sink.hh>
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#include "utils/small_vector.hh"
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#include "seastarx.hh"
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#pragma once
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// Accumulates data sent to the memory_data_sink allowing it
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// to be examined later.
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class memory_data_sink_buffers {
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using buffers_type = utils::small_vector<temporary_buffer<char>, 1>;
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buffers_type _bufs;
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size_t _size = 0;
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public:
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using value_type = temporary_buffer<char>; // for std::back_inserter to work
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size_t size() const { return _size; }
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buffers_type& buffers() { return _bufs; }
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const buffers_type& buffers() const { return _bufs; }
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// Strong exception guarantees
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void push_back(temporary_buffer<char>&& buf) {
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auto size = buf.size();
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_bufs.emplace_back(std::move(buf));
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_size += size;
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}
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void clear() {
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_bufs.clear();
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_size = 0;
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}
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memory_data_sink_buffers() = default;
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memory_data_sink_buffers(memory_data_sink_buffers&& other)
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: _bufs(std::move(other._bufs))
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, _size(std::exchange(other._size, 0))
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{
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}
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};
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inline void append_buffers(memory_data_sink_buffers& c, std::span<temporary_buffer<char>> bufs) {
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std::ranges::move(bufs, std::back_inserter(c));
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}
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using memory_data_sink = seastar::util::basic_memory_data_sink<memory_data_sink_buffers, 128*1024>;
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