131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
//
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// Copyright (c) 2019-2024 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_MYSQL_IMPL_INTERNAL_SANSIO_CONNECTION_STATE_HPP
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#define BOOST_MYSQL_IMPL_INTERNAL_SANSIO_CONNECTION_STATE_HPP
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#include <boost/mysql/diagnostics.hpp>
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#include <boost/mysql/error_code.hpp>
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#include <boost/mysql/handshake_params.hpp>
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#include <boost/mysql/statement.hpp>
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#include <boost/mysql/detail/algo_params.hpp>
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#include <boost/mysql/detail/any_resumable_ref.hpp>
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#include <boost/mysql/impl/internal/sansio/close_connection.hpp>
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#include <boost/mysql/impl/internal/sansio/close_statement.hpp>
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#include <boost/mysql/impl/internal/sansio/connect.hpp>
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#include <boost/mysql/impl/internal/sansio/connection_state_data.hpp>
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#include <boost/mysql/impl/internal/sansio/execute.hpp>
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#include <boost/mysql/impl/internal/sansio/handshake.hpp>
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#include <boost/mysql/impl/internal/sansio/ping.hpp>
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#include <boost/mysql/impl/internal/sansio/prepare_statement.hpp>
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#include <boost/mysql/impl/internal/sansio/quit_connection.hpp>
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#include <boost/mysql/impl/internal/sansio/read_resultset_head.hpp>
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#include <boost/mysql/impl/internal/sansio/read_some_rows.hpp>
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#include <boost/mysql/impl/internal/sansio/read_some_rows_dynamic.hpp>
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#include <boost/mysql/impl/internal/sansio/reset_connection.hpp>
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#include <boost/mysql/impl/internal/sansio/run_pipeline.hpp>
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#include <boost/mysql/impl/internal/sansio/set_character_set.hpp>
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#include <boost/mysql/impl/internal/sansio/start_execution.hpp>
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#include <boost/mysql/impl/internal/sansio/top_level_algo.hpp>
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#include <boost/variant2/variant.hpp>
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#include <cstddef>
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namespace boost {
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namespace mysql {
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namespace detail {
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// clang-format off
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template <class AlgoParams> struct get_algo;
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template <> struct get_algo<connect_algo_params> { using type = connect_algo; };
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template <> struct get_algo<handshake_algo_params> { using type = handshake_algo; };
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template <> struct get_algo<execute_algo_params> { using type = execute_algo; };
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template <> struct get_algo<start_execution_algo_params> { using type = start_execution_algo; };
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template <> struct get_algo<read_resultset_head_algo_params> { using type = read_resultset_head_algo; };
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template <> struct get_algo<read_some_rows_algo_params> { using type = read_some_rows_algo; };
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template <> struct get_algo<read_some_rows_dynamic_algo_params> { using type = read_some_rows_dynamic_algo; };
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template <> struct get_algo<prepare_statement_algo_params> { using type = prepare_statement_algo; };
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template <> struct get_algo<set_character_set_algo_params> { using type = set_character_set_algo; };
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template <> struct get_algo<quit_connection_algo_params> { using type = quit_connection_algo; };
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template <> struct get_algo<close_connection_algo_params> { using type = close_connection_algo; };
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template <> struct get_algo<run_pipeline_algo_params> { using type = run_pipeline_algo; };
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template <class AlgoParams> using get_algo_t = typename get_algo<AlgoParams>::type;
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// clang-format on
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class connection_state
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{
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// Helper
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template <class... Algos>
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using make_any_algo_type = variant2::variant<top_level_algo<Algos>...>;
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using any_algo = make_any_algo_type<
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connect_algo,
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handshake_algo,
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execute_algo,
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start_execution_algo,
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read_resultset_head_algo,
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read_some_rows_algo,
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read_some_rows_dynamic_algo,
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prepare_statement_algo,
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set_character_set_algo,
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quit_connection_algo,
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close_connection_algo,
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run_pipeline_algo>;
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connection_state_data st_data_;
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any_algo algo_;
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public:
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// We initialize the algo state with a dummy value. This will be overwritten
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// by setup() before the first algorithm starts running. Doing this avoids
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// the need for a special null algo
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connection_state(std::size_t read_buffer_size, std::size_t max_buffer_size, bool transport_supports_ssl)
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: st_data_(read_buffer_size, max_buffer_size, transport_supports_ssl),
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algo_(top_level_algo<quit_connection_algo>(
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st_data_,
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quit_connection_algo_params{&st_data_.shared_diag}
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))
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{
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}
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const connection_state_data& data() const { return st_data_; }
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connection_state_data& data() { return st_data_; }
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template <class AlgoParams>
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any_resumable_ref setup(AlgoParams params)
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{
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return any_resumable_ref(algo_.emplace<top_level_algo<get_algo_t<AlgoParams>>>(st_data_, params));
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}
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any_resumable_ref setup(close_statement_algo_params params)
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{
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return setup(setup_close_statement_pipeline(st_data_, params));
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}
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any_resumable_ref setup(reset_connection_algo_params params)
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{
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return setup(setup_reset_connection_pipeline(st_data_, params));
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}
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any_resumable_ref setup(ping_algo_params params) { return setup(setup_ping_pipeline(st_data_, params)); }
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template <typename AlgoParams>
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typename AlgoParams::result_type result() const
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{
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return variant2::get<top_level_algo<get_algo_t<AlgoParams>>>(algo_).inner_algo().result(st_data_);
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}
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};
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} // namespace detail
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} // namespace mysql
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} // namespace boost
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#endif
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