fcb8d040e8
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
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
/*
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* Copyright 2016-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <optional>
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#include "commitlog_types.hh"
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#include "frozen_mutation.hh"
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#include "schema_fwd.hh"
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class commitlog_entry {
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std::optional<column_mapping> _mapping;
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frozen_mutation _mutation;
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public:
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commitlog_entry(std::optional<column_mapping> mapping, frozen_mutation&& mutation)
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: _mapping(std::move(mapping)), _mutation(std::move(mutation)) { }
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const std::optional<column_mapping>& mapping() const { return _mapping; }
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const frozen_mutation& mutation() const & { return _mutation; }
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frozen_mutation&& mutation() && { return std::move(_mutation); }
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};
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class commitlog_entry_writer {
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public:
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using force_sync = db::commitlog_force_sync;
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private:
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schema_ptr _schema;
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const frozen_mutation& _mutation;
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bool _with_schema = true;
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size_t _size = std::numeric_limits<size_t>::max();
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force_sync _sync;
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private:
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template<typename Output>
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void serialize(Output&) const;
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void compute_size();
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public:
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commitlog_entry_writer(schema_ptr s, const frozen_mutation& fm, force_sync sync)
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: _schema(std::move(s)), _mutation(fm), _sync(sync)
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{}
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void set_with_schema(bool value) {
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_with_schema = value;
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compute_size();
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}
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bool with_schema() const {
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return _with_schema;
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}
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schema_ptr schema() const {
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return _schema;
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}
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size_t size() const {
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assert(_size != std::numeric_limits<size_t>::max());
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return _size;
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}
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size_t mutation_size() const {
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return _mutation.representation().size();
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}
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force_sync sync() const {
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return _sync;
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}
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void write(typename seastar::memory_output_stream<std::vector<temporary_buffer<char>>::iterator>& out) const;
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};
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class commitlog_entry_reader {
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commitlog_entry _ce;
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public:
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commitlog_entry_reader(const fragmented_temporary_buffer& buffer);
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const std::optional<column_mapping>& get_column_mapping() const { return _ce.mapping(); }
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const frozen_mutation& mutation() const & { return _ce.mutation(); }
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frozen_mutation&& mutation() && { return std::move(_ce).mutation(); }
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};
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