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https://github.com/codership/wsrep-lib.git
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6752a4504f
* Added unit tests for transaction::xa_detach() and transaction::xa_replay() * Added unit tests for wsrep::xid * Fixed minor issues pointed out by reviewer
112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
/*
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* Copyright (C) 2019 Codership Oy <info@codership.com>
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*
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* This file is part of wsrep-lib.
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*
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* Wsrep-lib is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* Wsrep-lib is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef WSREP_XID_HPP
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#define WSREP_XID_HPP
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#include <iosfwd>
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#include "buffer.hpp"
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#include "exception.hpp"
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namespace wsrep
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{
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class xid
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{
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public:
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xid()
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: format_id_(-1)
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, gtrid_len_(0)
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, bqual_len_(0)
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, data_()
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{ }
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xid(long format_id, long gtrid_len,
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long bqual_len, const char* data)
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: format_id_(format_id)
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, gtrid_len_(gtrid_len)
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, bqual_len_(bqual_len)
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, data_()
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{
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if (gtrid_len_ > 64 || bqual_len_ > 64)
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{
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throw wsrep::runtime_error("maximum wsrep::xid size exceeded");
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}
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const long len = gtrid_len_ + bqual_len_;
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if (len > 0)
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{
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data_.push_back(data, data + len);
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}
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}
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xid(const xid& xid)
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: format_id_(xid.format_id_)
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, gtrid_len_(xid.gtrid_len_)
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, bqual_len_(xid.bqual_len_)
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, data_(xid.data_)
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{ }
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bool is_null() const
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{
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return format_id_ == -1;
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}
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void clear()
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{
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format_id_ = -1;
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gtrid_len_ = 0;
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bqual_len_ = 0;
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data_.clear();
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}
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xid& operator= (const xid& other)
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{
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format_id_ = other.format_id_;
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gtrid_len_ = other.gtrid_len_;
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bqual_len_ = other.bqual_len_;
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data_ = other.data_;
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return *this;
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}
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bool operator==(const xid& other) const
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{
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if (format_id_ != other.format_id_ ||
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gtrid_len_ != other.gtrid_len_ ||
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bqual_len_ != other.bqual_len_ ||
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data_.size() != other.data_.size())
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{
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return false;
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}
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return data_ == other.data_;
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}
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friend std::string to_string(const wsrep::xid& xid);
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friend std::ostream& operator<<(std::ostream& os, const wsrep::xid& xid);
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protected:
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long format_id_;
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long gtrid_len_;
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long bqual_len_;
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mutable_buffer data_;
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};
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std::string to_string(const wsrep::xid& xid);
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std::ostream& operator<<(std::ostream& os, const wsrep::xid& xid);
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}
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#endif // WSREP_XID_HPP
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