Files
scylladb/utils/memory_data_sink.hh
Avi Kivity fcb8d040e8 treewide: use Software Package Data Exchange (SPDX) license identifiers
Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.

Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.

The changes we applied mechanically with a script, except to
licenses/README.md.

Closes #9937
2022-01-18 12:15:18 +01:00

59 lines
1.4 KiB
C++

/*
* Copyright (C) 2018-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <seastar/core/iostream.hh>
#include <seastar/core/temporary_buffer.hh>
#include "utils/small_vector.hh"
#include "seastarx.hh"
#pragma once
// Accumulates data sent to the memory_data_sink allowing it
// to be examined later.
class memory_data_sink_buffers {
using buffers_type = utils::small_vector<temporary_buffer<char>, 1>;
buffers_type _bufs;
size_t _size = 0;
public:
size_t size() const { return _size; }
buffers_type& buffers() { return _bufs; }
// Strong exception guarantees
void put(temporary_buffer<char>&& buf) {
auto size = buf.size();
_bufs.emplace_back(std::move(buf));
_size += size;
}
void clear() {
_bufs.clear();
_size = 0;
}
};
class memory_data_sink : public data_sink_impl {
memory_data_sink_buffers& _bufs;
public:
memory_data_sink(memory_data_sink_buffers& b) : _bufs(b) {}
virtual future<> put(net::packet data) override {
abort();
return make_ready_future<>();
}
virtual future<> put(temporary_buffer<char> buf) override {
_bufs.put(std::move(buf));
return make_ready_future<>();
}
virtual future<> flush() override {
return make_ready_future<>();
}
virtual future<> close() override {
return make_ready_future<>();
}
};