syncAppendEntriesReply.c

/*
 * 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/>.
 */

#include "syncAppendEntriesReply.h"

int32_t syncNodeOnAppendEntriesReplyCb(SSyncNode* ths, SyncAppendEntriesReply* pMsg) {
  // TLA+ Spec
  // HandleAppendEntriesResponse(i, j, m) ==
  //    /\ m.mterm = currentTerm[i]
  //    /\ \/ /\ m.msuccess \* successful
  //          /\ nextIndex'  = [nextIndex  EXCEPT ![i][j] = m.mmatchIndex + 1]
  //          /\ matchIndex' = [matchIndex EXCEPT ![i][j] = m.mmatchIndex]
  //       \/ /\ \lnot m.msuccess \* not successful
  //          /\ nextIndex' = [nextIndex EXCEPT ![i][j] =
  //                               Max({nextIndex[i][j] - 1, 1})]
  //          /\ UNCHANGED <<matchIndex>>
  //    /\ Discard(m)
  //    /\ UNCHANGED <<serverVars, candidateVars, logVars, elections>>
}