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/*
* Copyright (C) 2019 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/>.
*/
#ifndef WSREP_XID_HPP
#define WSREP_XID_HPP
#include <iosfwd>
#include "buffer.hpp"
#include "exception.hpp"
namespace wsrep
{
class xid
{
public:
xid()
: format_id_(-1)
, gtrid_len_(0)
, bqual_len_(0)
, data_()
{ }
xid(long format_id, long gtrid_len,
long bqual_len, const char* data)
: format_id_(format_id)
, gtrid_len_(gtrid_len)
, bqual_len_(bqual_len)
, data_()
{
if (gtrid_len_ > 64 || bqual_len_ > 64)
{
throw wsrep::runtime_error("maximum wsrep::xid size exceeded");
}
const long len = gtrid_len_ + bqual_len_;
if (len > 0)
{
data_.push_back(data, data + len);
}
}
xid(const xid& xid)
: format_id_(xid.format_id_)
, gtrid_len_(xid.gtrid_len_)
, bqual_len_(xid.bqual_len_)
, data_(xid.data_)
{ }
bool is_null() const
{
return format_id_ == -1;
}
void clear()
{
format_id_ = -1;
gtrid_len_ = 0;
bqual_len_ = 0;
data_.clear();
}
xid& operator= (const xid& other)
{
format_id_ = other.format_id_;
gtrid_len_ = other.gtrid_len_;
bqual_len_ = other.bqual_len_;
data_ = other.data_;
return *this;
}
bool operator==(const xid& other) const
{
if (format_id_ != other.format_id_ ||
gtrid_len_ != other.gtrid_len_ ||
bqual_len_ != other.bqual_len_ ||
data_.size() != other.data_.size())
{
return false;
}
return data_ == other.data_;
}
friend std::string to_string(const wsrep::xid& xid);
friend std::ostream& operator<<(std::ostream& os, const wsrep::xid& xid);
protected:
long format_id_;
long gtrid_len_;
long bqual_len_;
mutable_buffer data_;
};
std::string to_string(const wsrep::xid& xid);
std::ostream& operator<<(std::ostream& os, const wsrep::xid& xid);
}
#endif // WSREP_XID_HPP
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