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https://github.com/codership/wsrep-lib.git
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ea9971d54b
it on disconnect. - Don't rely on own index from the view because the view may come from another member (IST/SST), instead always determine own index from own ID. Refs codership/wsrep-lib#13
135 lines
3.5 KiB
C++
135 lines
3.5 KiB
C++
/*
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* Copyright (C) 2018 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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/** @file view.hpp
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*
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*
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*/
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#ifndef WSREP_VIEW_HPP
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#define WSREP_VIEW_HPP
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#include "id.hpp"
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#include "seqno.hpp"
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#include "gtid.hpp"
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#include <vector>
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#include <iostream>
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namespace wsrep
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{
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class view
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{
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public:
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enum status
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{
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primary,
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non_primary,
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disconnected
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};
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class member
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{
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public:
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member(const wsrep::id& id,
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const std::string& name,
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const std::string& incoming)
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: id_(id)
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, name_(name)
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, incoming_(incoming)
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{
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}
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const wsrep::id& id() const { return id_; }
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const std::string& name() const { return name_; }
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const std::string& incoming() const { return incoming_; }
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private:
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wsrep::id id_;
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std::string name_;
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std::string incoming_;
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};
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view()
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: state_id_()
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, view_seqno_()
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, status_(disconnected)
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, capabilities_()
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, own_index_(-1)
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, protocol_version_(0)
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, members_()
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{ }
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view(const wsrep::gtid& state_id,
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wsrep::seqno view_seqno,
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enum wsrep::view::status status,
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int capabilities,
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ssize_t own_index,
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int protocol_version,
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const std::vector<wsrep::view::member>& members)
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: state_id_(state_id)
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, view_seqno_(view_seqno)
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, status_(status)
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, capabilities_(capabilities)
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, own_index_(own_index)
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, protocol_version_(protocol_version)
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, members_(members)
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{ }
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wsrep::gtid state_id() const
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{ return state_id_; }
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wsrep::seqno view_seqno() const
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{ return view_seqno_; }
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wsrep::view::status status() const
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{ return status_; }
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ssize_t own_index() const
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{ return own_index_; }
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int protocol_version() const
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{ return protocol_version_; }
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const std::vector<member>& members() const { return members_; }
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/**
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* Return true if the view is final
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*/
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bool final() const
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{
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return (members_.empty() && own_index_ == -1);
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}
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void print(std::ostream& os) const;
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private:
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wsrep::gtid state_id_;
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wsrep::seqno view_seqno_;
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enum wsrep::view::status status_;
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int capabilities_;
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ssize_t own_index_;
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int protocol_version_;
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std::vector<wsrep::view::member> members_;
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};
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static inline
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std::ostream& operator<<(std::ostream& os, const wsrep::view& v)
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{
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v.print(os); return os;
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}
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}
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#endif // WSREP_VIEW
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