64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_LIBS_SYNC_REPLICATION_H
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#define _TD_LIBS_SYNC_REPLICATION_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "syncInt.h"
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#include "taosdef.h"
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// TLA+ Spec
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// AppendEntries(i, j) ==
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// /\ i /= j
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// /\ state[i] = Leader
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// /\ LET prevLogIndex == nextIndex[i][j] - 1
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// prevLogTerm == IF prevLogIndex > 0 THEN
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// log[i][prevLogIndex].term
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// ELSE
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// 0
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// \* Send up to 1 entry, constrained by the end of the log.
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// lastEntry == Min({Len(log[i]), nextIndex[i][j]})
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// entries == SubSeq(log[i], nextIndex[i][j], lastEntry)
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// IN Send([mtype |-> AppendEntriesRequest,
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// mterm |-> currentTerm[i],
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// mprevLogIndex |-> prevLogIndex,
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// mprevLogTerm |-> prevLogTerm,
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// mentries |-> entries,
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// \* mlog is used as a history variable for the proof.
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// \* It would not exist in a real implementation.
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// mlog |-> log[i],
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// mcommitIndex |-> Min({commitIndex[i], lastEntry}),
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// msource |-> i,
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// mdest |-> j])
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// /\ UNCHANGED <<serverVars, candidateVars, leaderVars, logVars>>
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//
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int32_t syncNodeAppendEntriesPeers(SSyncNode* pSyncNode);
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int32_t syncNodeAppendEntriesPeersSnapshot(SSyncNode* pSyncNode);
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int32_t syncNodeReplicate(SSyncNode* pSyncNode);
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int32_t syncNodeAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntries* pMsg);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_LIBS_SYNC_REPLICATION_H*/
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