syncElection.h

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _TD_LIBS_SYNC_ELECTION_H
#define _TD_LIBS_SYNC_ELECTION_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "syncInt.h"
#include "taosdef.h"

// TLA+ Spec
// RequestVote(i, j) ==
//    /\ state[i] = Candidate
//    /\ j \notin votesResponded[i]
//    /\ Send([mtype         |-> RequestVoteRequest,
//             mterm         |-> currentTerm[i],
//             mlastLogTerm  |-> LastTerm(log[i]),
//             mlastLogIndex |-> Len(log[i]),
//             msource       |-> i,
//             mdest         |-> j])
//    /\ UNCHANGED <<serverVars, candidateVars, leaderVars, logVars>>
//
int32_t syncNodeRequestVotePeers(SSyncNode* pSyncNode);
int32_t syncNodeRequestVotePeersSnapshot(SSyncNode* pSyncNode);
int32_t syncNodeElect(SSyncNode* pSyncNode);
int32_t syncNodeRequestVote(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncRequestVote* pMsg);

#ifdef __cplusplus
}
#endif

#endif /*_TD_LIBS_SYNC_ELECTION_H*/