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/*
* Copyright (C) 2018 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* Wsrep-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file db_client.hpp */
#ifndef WSREP_DB_CLIENT_HPP
#define WSREP_DB_CLIENT_HPP
#include "db_server_state.hpp"
#include "db_storage_engine.hpp"
#include "db_client_state.hpp"
#include "db_client_service.hpp"
#include "db_high_priority_service.hpp"
#include <random>
namespace db
{
class server;
class client
{
public:
struct stats
{
long long commits;
long long rollbacks;
long long replays;
stats()
: commits(0)
, rollbacks(0)
, replays(0)
{ }
};
client(db::server&,
wsrep::client_id,
enum wsrep::client_state::mode,
const db::params&);
bool bf_abort(wsrep::seqno);
const struct stats stats() const { return stats_; }
void store_globals()
{
client_state_.store_globals();
}
void reset_globals()
{ }
void start();
wsrep::client_state& client_state() { return client_state_; }
wsrep::client_service& client_service() { return client_service_; }
bool do_2pc() const { return false; }
private:
friend class db::server_state;
friend class db::client_service;
friend class db::high_priority_service;
template <class F> int client_command(F f);
void run_one_transaction();
void reset_error();
void report_progress(size_t) const;
wsrep::default_mutex mutex_;
wsrep::default_condition_variable cond_;
const db::params& params_;
db::server& server_;
db::server_state& server_state_;
db::client_state client_state_;
db::client_service client_service_;
db::storage_engine::transaction se_trx_;
wsrep::mutable_buffer data_;
std::random_device random_device_;
std::default_random_engine random_engine_;
struct stats stats_;
};
}
#endif // WSREP_DB_CLIENT_HPP
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