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homework-jianmu/source/libs/sync/src/syncMain.c

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/*
* 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 "sync.h"
#include "syncAppendEntries.h"
#include "syncAppendEntriesReply.h"
#include "syncCommit.h"
#include "syncElection.h"
#include "syncEnv.h"
#include "syncIndexMgr.h"
#include "syncInt.h"
#include "syncMessage.h"
#include "syncRaftCfg.h"
#include "syncRaftLog.h"
#include "syncRaftStore.h"
#include "syncReplication.h"
#include "syncRequestVote.h"
#include "syncRequestVoteReply.h"
#include "syncRespMgr.h"
#include "syncSnapshot.h"
#include "syncTimeout.h"
#include "syncUtil.h"
#include "syncVoteMgr.h"
#include "tref.h"
bool gRaftDetailLog = false;
static int32_t tsNodeRefId = -1;
// ------ local funciton ---------
// enqueue message ----
static void syncNodeEqPingTimer(void* param, void* tmrId);
static void syncNodeEqElectTimer(void* param, void* tmrId);
static void syncNodeEqHeartbeatTimer(void* param, void* tmrId);
static int32_t syncNodeEqNoop(SSyncNode* ths);
static int32_t syncNodeAppendNoop(SSyncNode* ths);
static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId);
// process message ----
int32_t syncNodeOnPingCb(SSyncNode* ths, SyncPing* pMsg);
int32_t syncNodeOnPingReplyCb(SSyncNode* ths, SyncPingReply* pMsg);
// ---------------------------------
static void syncNodeFreeCb(void* param) {
syncNodeClose(param);
param = NULL;
}
int32_t syncInit() {
int32_t ret = 0;
if (!syncEnvIsStart()) {
tsNodeRefId = taosOpenRef(200, syncNodeFreeCb);
if (tsNodeRefId < 0) {
sError("failed to init node ref");
syncCleanUp();
ret = -1;
} else {
sDebug("sync rsetId:%" PRId64 " is open", tsNodeRefId);
ret = syncEnvStart();
}
}
return ret;
}
void syncCleanUp() {
int32_t ret = syncEnvStop();
ASSERT(ret == 0);
if (tsNodeRefId != -1) {
sDebug("sync rsetId:%" PRId64 " is closed", tsNodeRefId);
taosCloseRef(tsNodeRefId);
tsNodeRefId = -1;
}
}
int64_t syncOpen(const SSyncInfo* pSyncInfo) {
SSyncNode* pSyncNode = syncNodeOpen(pSyncInfo);
if (pSyncNode == NULL) {
sError("failed to open sync node. vgId:%d", pSyncInfo->vgId);
return -1;
}
pSyncNode->rid = taosAddRef(tsNodeRefId, pSyncNode);
if (pSyncNode->rid < 0) {
syncNodeClose(pSyncNode);
pSyncNode = NULL;
return -1;
}
sDebug("vgId:%d, sync rid:%" PRId64 " is added to rsetId:%" PRId64, pSyncInfo->vgId, pSyncNode->rid, tsNodeRefId);
return pSyncNode->rid;
}
void syncStart(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
if (pSyncNode->pRaftCfg->isStandBy) {
syncNodeStartStandBy(pSyncNode);
} else {
syncNodeStart(pSyncNode);
}
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void syncStartNormal(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
syncNodeStart(pSyncNode);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void syncStartStandBy(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
syncNodeStartStandBy(pSyncNode);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void syncStop(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) return;
int32_t vgId = pSyncNode->vgId;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
taosRemoveRef(tsNodeRefId, rid);
sDebug("vgId:%d, sync rid:%" PRId64 " is removed from rsetId:%" PRId64, vgId, rid, tsNodeRefId);
}
int32_t syncSetStandby(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
sError("failed to set standby since accquire ref error, rid:%" PRId64, rid);
return -1;
}
if (pSyncNode->state != TAOS_SYNC_STATE_FOLLOWER) {
if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
terrno = TSDB_CODE_SYN_IS_LEADER;
} else {
terrno = TSDB_CODE_SYN_STANDBY_NOT_READY;
}
sError("failed to set standby since it is not follower, state:%s rid:%" PRId64, syncStr(pSyncNode->state), rid);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return -1;
}
// state change
pSyncNode->state = TAOS_SYNC_STATE_FOLLOWER;
syncNodeStopHeartbeatTimer(pSyncNode);
// reset elect timer, long enough
int32_t electMS = TIMER_MAX_MS;
int32_t ret = syncNodeRestartElectTimer(pSyncNode, electMS);
ASSERT(ret == 0);
pSyncNode->pRaftCfg->isStandBy = 1;
raftCfgPersist(pSyncNode->pRaftCfg);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
sInfo("vgId:%d, set to standby", pSyncNode->vgId);
return 0;
}
bool syncNodeCheckNewConfig(SSyncNode* pSyncNode, const SSyncCfg* pNewCfg) {
bool IamInNew = syncNodeInConfig(pSyncNode, pNewCfg);
if (!IamInNew) {
return false;
}
if (pNewCfg->replicaNum > pSyncNode->replicaNum + 1) {
return false;
}
if (pNewCfg->replicaNum < pSyncNode->replicaNum - 1) {
return false;
}
return true;
}
int32_t syncReconfigBuild(int64_t rid, const SSyncCfg* pNewCfg, SRpcMsg* pRpcMsg) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t ret = 0;
if (!syncNodeCheckNewConfig(pSyncNode, pNewCfg)) {
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
terrno = TSDB_CODE_SYN_NEW_CONFIG_ERROR;
sError("invalid new config. vgId:%d", pSyncNode->vgId);
return -1;
}
char* newconfig = syncCfg2Str((SSyncCfg*)pNewCfg);
pRpcMsg->msgType = TDMT_SYNC_CONFIG_CHANGE;
pRpcMsg->info.noResp = 1;
pRpcMsg->contLen = strlen(newconfig) + 1;
pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
snprintf(pRpcMsg->pCont, pRpcMsg->contLen, "%s", newconfig);
taosMemoryFree(newconfig);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncReconfig(int64_t rid, const SSyncCfg* pNewCfg) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
if (!syncNodeCheckNewConfig(pSyncNode, pNewCfg)) {
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
terrno = TSDB_CODE_SYN_NEW_CONFIG_ERROR;
sError("invalid new config. vgId:%d", pSyncNode->vgId);
return -1;
}
char* newconfig = syncCfg2Str((SSyncCfg*)pNewCfg);
int32_t ret = 0;
SRpcMsg rpcMsg = {0};
rpcMsg.msgType = TDMT_SYNC_CONFIG_CHANGE;
rpcMsg.info.noResp = 1;
rpcMsg.contLen = strlen(newconfig) + 1;
rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
snprintf(rpcMsg.pCont, rpcMsg.contLen, "%s", newconfig);
taosMemoryFree(newconfig);
ret = syncNodePropose(pSyncNode, &rpcMsg, false);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncLeaderTransfer(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t ret = syncNodeLeaderTransfer(pSyncNode);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncLeaderTransferTo(int64_t rid, SNodeInfo newLeader) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t ret = syncNodeLeaderTransferTo(pSyncNode, newLeader);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t code = 0;
if (pSyncNode->replicaNum == 1) {
SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
code = walBeginSnapshot(pData->pWal, lastApplyIndex);
} else {
SyncIndex snapshottingIndex = atomic_load_64(&pSyncNode->snapshottingIndex);
if (snapshottingIndex == SYNC_INDEX_INVALID) {
atomic_store_64(&pSyncNode->snapshottingIndex, lastApplyIndex);
SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
code = walBeginSnapshot(pData->pWal, lastApplyIndex);
} else {
sError("vgId:%d snapshotting index:%ld, lastApplyIndex:%ld", snapshottingIndex, lastApplyIndex);
}
}
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return code;
}
int32_t syncEndSnapshot(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
int32_t code = walEndSnapshot(pData->pWal);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return code;
}
int32_t syncNodeLeaderTransfer(SSyncNode* pSyncNode) {
if (pSyncNode->peersNum == 0) {
sDebug("only one replica, cannot leader transfer");
terrno = TSDB_CODE_SYN_ONE_REPLICA;
return -1;
}
SNodeInfo newLeader = (pSyncNode->peersNodeInfo)[0];
int32_t ret = syncNodeLeaderTransferTo(pSyncNode, newLeader);
return ret;
}
int32_t syncNodeLeaderTransferTo(SSyncNode* pSyncNode, SNodeInfo newLeader) {
int32_t ret = 0;
if (pSyncNode->replicaNum == 1) {
sDebug("only one replica, cannot leader transfer");
terrno = TSDB_CODE_SYN_ONE_REPLICA;
return -1;
}
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "begin leader transfer to %s:%u", newLeader.nodeFqdn, newLeader.nodePort);
syncNodeEventLog(pSyncNode, logBuf);
} while (0);
SyncLeaderTransfer* pMsg = syncLeaderTransferBuild(pSyncNode->vgId);
pMsg->newLeaderId.addr = syncUtilAddr2U64(newLeader.nodeFqdn, newLeader.nodePort);
pMsg->newLeaderId.vgId = pSyncNode->vgId;
pMsg->newNodeInfo = newLeader;
ASSERT(pMsg != NULL);
SRpcMsg rpcMsg = {0};
syncLeaderTransfer2RpcMsg(pMsg, &rpcMsg);
syncLeaderTransferDestroy(pMsg);
ret = syncNodePropose(pSyncNode, &rpcMsg, false);
return ret;
}
bool syncCanLeaderTransfer(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return false;
}
ASSERT(rid == pSyncNode->rid);
if (pSyncNode->replicaNum == 1) {
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return false;
}
if (pSyncNode->state == TAOS_SYNC_STATE_FOLLOWER) {
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return true;
}
bool matchOK = true;
if (pSyncNode->state == TAOS_SYNC_STATE_CANDIDATE || pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
SyncIndex myCommitIndex = pSyncNode->commitIndex;
for (int i = 0; i < pSyncNode->peersNum; ++i) {
SyncIndex peerMatchIndex = syncIndexMgrGetIndex(pSyncNode->pMatchIndex, &(pSyncNode->peersId)[i]);
if (peerMatchIndex < myCommitIndex) {
matchOK = false;
}
}
}
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return matchOK;
}
int32_t syncForwardToPeer(int64_t rid, SRpcMsg* pMsg, bool isWeak) {
int32_t ret = syncPropose(rid, pMsg, isWeak);
return ret;
}
ESyncState syncGetMyRole(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return TAOS_SYNC_STATE_ERROR;
}
ASSERT(rid == pSyncNode->rid);
ESyncState state = pSyncNode->state;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return state;
}
bool syncIsReady(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return false;
}
ASSERT(rid == pSyncNode->rid);
bool b = (pSyncNode->state == TAOS_SYNC_STATE_LEADER) && pSyncNode->restoreFinish;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
// if false, set error code
if (false == b) {
if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
terrno = TSDB_CODE_SYN_NOT_LEADER;
} else {
terrno = TSDB_CODE_APP_NOT_READY;
}
}
return b;
}
bool syncIsRestoreFinish(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return false;
}
ASSERT(rid == pSyncNode->rid);
bool b = pSyncNode->restoreFinish;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return b;
}
int32_t syncGetSnapshotByIndex(int64_t rid, SyncIndex index, SSnapshot* pSnapshot) {
if (index < SYNC_INDEX_BEGIN) {
return -1;
}
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return -1;
}
ASSERT(rid == pSyncNode->rid);
SSyncRaftEntry* pEntry = NULL;
int32_t code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, index, &pEntry);
if (code != 0) {
if (pEntry != NULL) {
syncEntryDestory(pEntry);
}
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return -1;
}
ASSERT(pEntry != NULL);
pSnapshot->data = NULL;
pSnapshot->lastApplyIndex = index;
pSnapshot->lastApplyTerm = pEntry->term;
pSnapshot->lastConfigIndex = syncNodeGetSnapshotConfigIndex(pSyncNode, index);
syncEntryDestory(pEntry);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return 0;
}
int32_t syncGetSnapshotMeta(int64_t rid, struct SSnapshotMeta* sMeta) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return -1;
}
ASSERT(rid == pSyncNode->rid);
sMeta->lastConfigIndex = pSyncNode->pRaftCfg->lastConfigIndex;
sTrace("vgId:%d, get snapshot meta, lastConfigIndex:%" PRId64, pSyncNode->vgId, pSyncNode->pRaftCfg->lastConfigIndex);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return 0;
}
int32_t syncGetSnapshotMetaByIndex(int64_t rid, SyncIndex snapshotIndex, struct SSnapshotMeta* sMeta) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return -1;
}
ASSERT(rid == pSyncNode->rid);
ASSERT(pSyncNode->pRaftCfg->configIndexCount >= 1);
SyncIndex lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[0];
for (int i = 0; i < pSyncNode->pRaftCfg->configIndexCount; ++i) {
if ((pSyncNode->pRaftCfg->configIndexArr)[i] > lastIndex &&
(pSyncNode->pRaftCfg->configIndexArr)[i] <= snapshotIndex) {
lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[i];
}
}
sMeta->lastConfigIndex = lastIndex;
sTrace("vgId:%d, get snapshot meta by index:%" PRId64 " lcindex:%" PRId64, pSyncNode->vgId, snapshotIndex,
sMeta->lastConfigIndex);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return 0;
}
SyncIndex syncNodeGetSnapshotConfigIndex(SSyncNode* pSyncNode, SyncIndex snapshotLastApplyIndex) {
ASSERT(pSyncNode->pRaftCfg->configIndexCount >= 1);
SyncIndex lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[0];
for (int i = 0; i < pSyncNode->pRaftCfg->configIndexCount; ++i) {
if ((pSyncNode->pRaftCfg->configIndexArr)[i] > lastIndex &&
(pSyncNode->pRaftCfg->configIndexArr)[i] <= snapshotLastApplyIndex) {
lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[i];
}
}
sTrace("vgId:%d, sync get last config index, index:%" PRId64 " lcindex:%" PRId64, pSyncNode->vgId,
snapshotLastApplyIndex, lastIndex);
return lastIndex;
}
const char* syncGetMyRoleStr(int64_t rid) {
const char* s = syncUtilState2String(syncGetMyRole(rid));
return s;
}
bool syncRestoreFinish(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return false;
}
ASSERT(rid == pSyncNode->rid);
bool restoreFinish = pSyncNode->restoreFinish;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return restoreFinish;
}
SyncTerm syncGetMyTerm(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return TAOS_SYNC_STATE_ERROR;
}
ASSERT(rid == pSyncNode->rid);
SyncTerm term = pSyncNode->pRaftStore->currentTerm;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return term;
}
SyncIndex syncGetLastIndex(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return SYNC_INDEX_INVALID;
}
ASSERT(rid == pSyncNode->rid);
SyncIndex lastIndex = syncNodeGetLastIndex(pSyncNode);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return lastIndex;
}
SyncIndex syncGetCommitIndex(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return SYNC_INDEX_INVALID;
}
ASSERT(rid == pSyncNode->rid);
SyncIndex cmtIndex = pSyncNode->commitIndex;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return cmtIndex;
}
SyncGroupId syncGetVgId(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return TAOS_SYNC_STATE_ERROR;
}
ASSERT(rid == pSyncNode->rid);
SyncGroupId vgId = pSyncNode->vgId;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return vgId;
}
void syncGetEpSet(int64_t rid, SEpSet* pEpSet) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
memset(pEpSet, 0, sizeof(*pEpSet));
return;
}
ASSERT(rid == pSyncNode->rid);
pEpSet->numOfEps = 0;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
snprintf(pEpSet->eps[i].fqdn, sizeof(pEpSet->eps[i].fqdn), "%s", (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodeFqdn);
pEpSet->eps[i].port = (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodePort;
(pEpSet->numOfEps)++;
sInfo("vgId:%d, sync get epset: index:%d %s:%d", pSyncNode->vgId, i, pEpSet->eps[i].fqdn, pEpSet->eps[i].port);
}
pEpSet->inUse = pSyncNode->pRaftCfg->cfg.myIndex;
sInfo("vgId:%d, sync get epset in-use:%d", pSyncNode->vgId, pEpSet->inUse);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void syncGetRetryEpSet(int64_t rid, SEpSet* pEpSet) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
memset(pEpSet, 0, sizeof(*pEpSet));
return;
}
ASSERT(rid == pSyncNode->rid);
pEpSet->numOfEps = 0;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
snprintf(pEpSet->eps[i].fqdn, sizeof(pEpSet->eps[i].fqdn), "%s", (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodeFqdn);
pEpSet->eps[i].port = (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodePort;
(pEpSet->numOfEps)++;
sInfo("vgId:%d, sync get retry epset: index:%d %s:%d", pSyncNode->vgId, i, pEpSet->eps[i].fqdn,
pEpSet->eps[i].port);
}
pEpSet->inUse = (pSyncNode->pRaftCfg->cfg.myIndex + 1) % pEpSet->numOfEps;
sInfo("vgId:%d, sync get retry epset in-use:%d", pSyncNode->vgId, pEpSet->inUse);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
int32_t syncGetRespRpc(int64_t rid, uint64_t index, SRpcMsg* msg) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return TAOS_SYNC_STATE_ERROR;
}
ASSERT(rid == pSyncNode->rid);
SRespStub stub;
int32_t ret = syncRespMgrGet(pSyncNode->pSyncRespMgr, index, &stub);
if (ret == 1) {
memcpy(msg, &(stub.rpcMsg), sizeof(SRpcMsg));
}
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncGetAndDelRespRpc(int64_t rid, uint64_t index, SRpcHandleInfo* pInfo) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return TAOS_SYNC_STATE_ERROR;
}
ASSERT(rid == pSyncNode->rid);
SRespStub stub;
int32_t ret = syncRespMgrGetAndDel(pSyncNode->pSyncRespMgr, index, &stub);
if (ret == 1) {
*pInfo = stub.rpcMsg.info;
}
sTrace("vgId:%d, get seq:%" PRIu64 " rpc handle:%p", pSyncNode->vgId, index, pInfo->handle);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
void syncSetMsgCb(int64_t rid, const SMsgCb* msgcb) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
sTrace("syncSetQ get pSyncNode is NULL, rid:%" PRId64, rid);
return;
}
ASSERT(rid == pSyncNode->rid);
pSyncNode->msgcb = msgcb;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
char* sync2SimpleStr(int64_t rid) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
sTrace("syncSetRpc get pSyncNode is NULL, rid:%" PRId64, rid);
return NULL;
}
ASSERT(rid == pSyncNode->rid);
char* s = syncNode2SimpleStr(pSyncNode);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return s;
}
void setPingTimerMS(int64_t rid, int32_t pingTimerMS) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
ASSERT(rid == pSyncNode->rid);
pSyncNode->pingBaseLine = pingTimerMS;
pSyncNode->pingTimerMS = pingTimerMS;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void setElectTimerMS(int64_t rid, int32_t electTimerMS) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
ASSERT(rid == pSyncNode->rid);
pSyncNode->electBaseLine = electTimerMS;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
void setHeartbeatTimerMS(int64_t rid, int32_t hbTimerMS) {
SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
return;
}
ASSERT(rid == pSyncNode->rid);
pSyncNode->hbBaseLine = hbTimerMS;
pSyncNode->heartbeatTimerMS = hbTimerMS;
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
}
int32_t syncPropose(int64_t rid, SRpcMsg* pMsg, bool isWeak) {
SSyncNode* pSyncNode = taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
taosReleaseRef(tsNodeRefId, rid);
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t ret = syncNodePropose(pSyncNode, pMsg, isWeak);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
int32_t syncProposeBatch(int64_t rid, SRpcMsg** pMsgPArr, bool* pIsWeakArr, int32_t arrSize) {
if (arrSize < 0) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
SSyncNode* pSyncNode = taosAcquireRef(tsNodeRefId, rid);
if (pSyncNode == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
ASSERT(rid == pSyncNode->rid);
int32_t ret = syncNodeProposeBatch(pSyncNode, pMsgPArr, pIsWeakArr, arrSize);
taosReleaseRef(tsNodeRefId, pSyncNode->rid);
return ret;
}
static bool syncNodeBatchOK(SRpcMsg** pMsgPArr, int32_t arrSize) {
for (int32_t i = 0; i < arrSize; ++i) {
if (pMsgPArr[i]->msgType == TDMT_SYNC_CONFIG_CHANGE) {
return false;
}
if (pMsgPArr[i]->msgType == TDMT_SYNC_CONFIG_CHANGE_FINISH) {
return false;
}
}
return true;
}
int32_t syncNodeProposeBatch(SSyncNode* pSyncNode, SRpcMsg** pMsgPArr, bool* pIsWeakArr, int32_t arrSize) {
if (!syncNodeBatchOK(pMsgPArr, arrSize)) {
syncNodeErrorLog(pSyncNode, "sync propose batch error");
terrno = TSDB_CODE_SYN_BATCH_ERROR;
return -1;
}
if (arrSize > SYNC_MAX_BATCH_SIZE) {
syncNodeErrorLog(pSyncNode, "sync propose batch error");
terrno = TSDB_CODE_SYN_BATCH_ERROR;
return -1;
}
if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
syncNodeErrorLog(pSyncNode, "sync propose not leader");
terrno = TSDB_CODE_SYN_NOT_LEADER;
return -1;
}
if (pSyncNode->changing) {
syncNodeErrorLog(pSyncNode, "sync propose not ready");
terrno = TSDB_CODE_SYN_PROPOSE_NOT_READY;
return -1;
}
SRaftMeta raftArr[SYNC_MAX_BATCH_SIZE];
for (int i = 0; i < arrSize; ++i) {
do {
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "propose message, type:%s batch:%d", TMSG_INFO(pMsgPArr[i]->msgType),
arrSize);
syncNodeEventLog(pSyncNode, eventLog);
} while (0);
SRespStub stub;
stub.createTime = taosGetTimestampMs();
stub.rpcMsg = *(pMsgPArr[i]);
uint64_t seqNum = syncRespMgrAdd(pSyncNode->pSyncRespMgr, &stub);
raftArr[i].isWeak = pIsWeakArr[i];
raftArr[i].seqNum = seqNum;
}
SyncClientRequestBatch* pSyncMsg = syncClientRequestBatchBuild(pMsgPArr, raftArr, arrSize, pSyncNode->vgId);
ASSERT(pSyncMsg != NULL);
SRpcMsg rpcMsg;
syncClientRequestBatch2RpcMsg(pSyncMsg, &rpcMsg);
taosMemoryFree(pSyncMsg); // only free msg body, do not free rpc msg content
if (pSyncNode->replicaNum == 1 && pSyncNode->vgId != 1) {
int32_t code = syncNodeOnClientRequestBatchCb(pSyncNode, pSyncMsg);
if (code == 0) {
// update rpc msg applyIndex
SRpcMsg* msgArr = syncClientRequestBatchRpcMsgArr(pSyncMsg);
ASSERT(arrSize == pSyncMsg->dataCount);
for (int i = 0; i < arrSize; ++i) {
pMsgPArr[i]->info.conn.applyIndex = msgArr[i].info.conn.applyIndex;
syncRespMgrDel(pSyncNode->pSyncRespMgr, raftArr[i].seqNum);
}
rpcFreeCont(rpcMsg.pCont);
terrno = 0;
return 1;
} else {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
} else {
if (pSyncNode->FpEqMsg != NULL && (*pSyncNode->FpEqMsg)(pSyncNode->msgcb, &rpcMsg) == 0) {
// enqueue msg ok
return 0;
} else {
sError("vgId:%d, enqueue msg error, FpEqMsg is NULL", pSyncNode->vgId);
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
return -1;
}
}
return 0;
}
int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak) {
int32_t ret = 0;
do {
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "propose message, type:%s", TMSG_INFO(pMsg->msgType));
syncNodeEventLog(pSyncNode, eventLog);
} while (0);
if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
if (pSyncNode->changing && pMsg->msgType != TDMT_SYNC_CONFIG_CHANGE_FINISH) {
ret = -1;
terrno = TSDB_CODE_SYN_PROPOSE_NOT_READY;
sError("vgId:%d, failed to sync propose since not ready, type:%s", pSyncNode->vgId, TMSG_INFO(pMsg->msgType));
goto _END;
}
// config change
if (pMsg->msgType == TDMT_SYNC_CONFIG_CHANGE) {
if (!syncNodeCanChange(pSyncNode)) {
ret = -1;
terrno = TSDB_CODE_SYN_RECONFIG_NOT_READY;
sError("vgId:%d, failed to sync reconfig since not ready, type:%s", pSyncNode->vgId, TMSG_INFO(pMsg->msgType));
goto _END;
}
ASSERT(!pSyncNode->changing);
pSyncNode->changing = true;
}
// not restored, vnode enable
if (!pSyncNode->restoreFinish && pSyncNode->vgId != 1) {
ret = -1;
terrno = TSDB_CODE_SYN_PROPOSE_NOT_READY;
sError("vgId:%d, failed to sync propose since not ready, type:%s, last:%ld, cmt:%ld", pSyncNode->vgId,
TMSG_INFO(pMsg->msgType), syncNodeGetLastIndex(pSyncNode), pSyncNode->commitIndex);
goto _END;
}
SRespStub stub;
stub.createTime = taosGetTimestampMs();
stub.rpcMsg = *pMsg;
uint64_t seqNum = syncRespMgrAdd(pSyncNode->pSyncRespMgr, &stub);
SyncClientRequest* pSyncMsg = syncClientRequestBuild2(pMsg, seqNum, isWeak, pSyncNode->vgId);
SRpcMsg rpcMsg;
syncClientRequest2RpcMsg(pSyncMsg, &rpcMsg);
// optimized one replica
if (syncNodeIsOptimizedOneReplica(pSyncNode, pMsg)) {
SyncIndex retIndex;
int32_t code = syncNodeOnClientRequestCb(pSyncNode, pSyncMsg, &retIndex);
if (code == 0) {
pMsg->info.conn.applyIndex = retIndex;
pMsg->info.conn.applyTerm = pSyncNode->pRaftStore->currentTerm;
rpcFreeCont(rpcMsg.pCont);
syncRespMgrDel(pSyncNode->pSyncRespMgr, seqNum);
ret = 1;
sDebug("vgId:%d, sync optimize index:%" PRId64 ", type:%s", pSyncNode->vgId, retIndex,
TMSG_INFO(pMsg->msgType));
} else {
ret = -1;
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
sError("vgId:%d, failed to sync optimize index:%" PRId64 ", type:%s", pSyncNode->vgId, retIndex,
TMSG_INFO(pMsg->msgType));
}
} else {
if (pSyncNode->FpEqMsg != NULL && (*pSyncNode->FpEqMsg)(pSyncNode->msgcb, &rpcMsg) == 0) {
ret = 0;
} else {
ret = -1;
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
sError("vgId:%d, failed to enqueue msg since its null", pSyncNode->vgId);
}
}
syncClientRequestDestroy(pSyncMsg);
goto _END;
} else {
ret = -1;
terrno = TSDB_CODE_SYN_NOT_LEADER;
sError("vgId:%d, sync propose not leader, %s, type:%s", pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
TMSG_INFO(pMsg->msgType));
goto _END;
}
_END:
return ret;
}
int32_t syncHbTimerInit(SSyncNode* pSyncNode, SSyncTimer* pSyncTimer, SRaftId destId) {
pSyncTimer->pTimer = NULL;
pSyncTimer->counter = 0;
pSyncTimer->timerMS = pSyncNode->hbBaseLine;
pSyncTimer->timerCb = syncNodeEqPeerHeartbeatTimer;
pSyncTimer->destId = destId;
atomic_store_64(&pSyncTimer->logicClock, 0);
return 0;
}
int32_t syncHbTimerStart(SSyncNode* pSyncNode, SSyncTimer* pSyncTimer) {
int32_t ret = 0;
if (syncEnvIsStart()) {
SSyncHbTimerData* pData = taosMemoryMalloc(sizeof(SSyncHbTimerData));
pData->pSyncNode = pSyncNode;
pData->pTimer = pSyncTimer;
pData->destId = pSyncTimer->destId;
pData->logicClock = pSyncTimer->logicClock;
pSyncTimer->pData = pData;
taosTmrReset(pSyncTimer->timerCb, pSyncTimer->timerMS, pData, gSyncEnv->pTimerManager, &pSyncTimer->pTimer);
} else {
sError("vgId:%d, start ctrl hb timer error, sync env is stop", pSyncNode->vgId);
}
return ret;
}
int32_t syncHbTimerStop(SSyncNode* pSyncNode, SSyncTimer* pSyncTimer) {
int32_t ret = 0;
atomic_add_fetch_64(&pSyncTimer->logicClock, 1);
taosTmrStop(pSyncTimer->pTimer);
pSyncTimer->pTimer = NULL;
// taosMemoryFree(pSyncTimer->pData);
return ret;
}
// open/close --------------
SSyncNode* syncNodeOpen(const SSyncInfo* pOldSyncInfo) {
SSyncInfo* pSyncInfo = (SSyncInfo*)pOldSyncInfo;
SSyncNode* pSyncNode = (SSyncNode*)taosMemoryCalloc(1, sizeof(SSyncNode));
if (pSyncNode == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
goto _error;
}
int32_t ret = 0;
if (!taosDirExist((char*)(pSyncInfo->path))) {
if (taosMkDir(pSyncInfo->path) != 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
sError("failed to create dir:%s since %s", pSyncInfo->path, terrstr());
goto _error;
}
}
snprintf(pSyncNode->configPath, sizeof(pSyncNode->configPath), "%s%sraft_config.json", pSyncInfo->path, TD_DIRSEP);
if (!taosCheckExistFile(pSyncNode->configPath)) {
// create a new raft config file
SRaftCfgMeta meta;
meta.isStandBy = pSyncInfo->isStandBy;
meta.snapshotStrategy = pSyncInfo->snapshotStrategy;
meta.lastConfigIndex = SYNC_INDEX_INVALID;
meta.batchSize = pSyncInfo->batchSize;
ret = raftCfgCreateFile((SSyncCfg*)&(pSyncInfo->syncCfg), meta, pSyncNode->configPath);
if (ret != 0) {
sError("failed to create raft cfg file. configPath: %s", pSyncNode->configPath);
goto _error;
}
} else {
// update syncCfg by raft_config.json
pSyncNode->pRaftCfg = raftCfgOpen(pSyncNode->configPath);
if (pSyncNode->pRaftCfg == NULL) {
sError("failed to open raft cfg file. path:%s", pSyncNode->configPath);
goto _error;
}
pSyncInfo->syncCfg = pSyncNode->pRaftCfg->cfg;
raftCfgClose(pSyncNode->pRaftCfg);
pSyncNode->pRaftCfg = NULL;
}
// init by SSyncInfo
pSyncNode->vgId = pSyncInfo->vgId;
memcpy(pSyncNode->path, pSyncInfo->path, sizeof(pSyncNode->path));
snprintf(pSyncNode->raftStorePath, sizeof(pSyncNode->raftStorePath), "%s%sraft_store.json", pSyncInfo->path,
TD_DIRSEP);
snprintf(pSyncNode->configPath, sizeof(pSyncNode->configPath), "%s%sraft_config.json", pSyncInfo->path, TD_DIRSEP);
pSyncNode->pWal = pSyncInfo->pWal;
pSyncNode->msgcb = pSyncInfo->msgcb;
pSyncNode->FpSendMsg = pSyncInfo->FpSendMsg;
pSyncNode->FpEqMsg = pSyncInfo->FpEqMsg;
pSyncNode->FpEqCtrlMsg = pSyncInfo->FpEqCtrlMsg;
// init raft config
pSyncNode->pRaftCfg = raftCfgOpen(pSyncNode->configPath);
if (pSyncNode->pRaftCfg == NULL) {
sError("failed to open raft cfg file. path:%s", pSyncNode->configPath);
goto _error;
}
// init internal
pSyncNode->myNodeInfo = pSyncNode->pRaftCfg->cfg.nodeInfo[pSyncNode->pRaftCfg->cfg.myIndex];
if (!syncUtilnodeInfo2raftId(&pSyncNode->myNodeInfo, pSyncNode->vgId, &pSyncNode->myRaftId)) {
sError("failed to determine my raft member id. vgId:%d", pSyncNode->vgId);
goto _error;
}
// init peersNum, peers, peersId
pSyncNode->peersNum = pSyncNode->pRaftCfg->cfg.replicaNum - 1;
int j = 0;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
if (i != pSyncNode->pRaftCfg->cfg.myIndex) {
pSyncNode->peersNodeInfo[j] = pSyncNode->pRaftCfg->cfg.nodeInfo[i];
j++;
}
}
for (int i = 0; i < pSyncNode->peersNum; ++i) {
if (!syncUtilnodeInfo2raftId(&pSyncNode->peersNodeInfo[i], pSyncNode->vgId, &pSyncNode->peersId[i])) {
sError("failed to determine raft member id. vgId:%d, peer:%d", pSyncNode->vgId, i);
goto _error;
}
}
// init replicaNum, replicasId
pSyncNode->replicaNum = pSyncNode->pRaftCfg->cfg.replicaNum;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
if (!syncUtilnodeInfo2raftId(&pSyncNode->pRaftCfg->cfg.nodeInfo[i], pSyncNode->vgId, &pSyncNode->replicasId[i])) {
sError("failed to determine raft member id. vgId:%d, replica:%d", pSyncNode->vgId, i);
goto _error;
}
}
// init raft algorithm
pSyncNode->pFsm = pSyncInfo->pFsm;
pSyncInfo->pFsm = NULL;
pSyncNode->quorum = syncUtilQuorum(pSyncNode->pRaftCfg->cfg.replicaNum);
pSyncNode->leaderCache = EMPTY_RAFT_ID;
// init life cycle outside
// TLA+ Spec
// InitHistoryVars == /\ elections = {}
// /\ allLogs = {}
// /\ voterLog = [i \in Server |-> [j \in {} |-> <<>>]]
// InitServerVars == /\ currentTerm = [i \in Server |-> 1]
// /\ state = [i \in Server |-> Follower]
// /\ votedFor = [i \in Server |-> Nil]
// InitCandidateVars == /\ votesResponded = [i \in Server |-> {}]
// /\ votesGranted = [i \in Server |-> {}]
// \* The values nextIndex[i][i] and matchIndex[i][i] are never read, since the
// \* leader does not send itself messages. It's still easier to include these
// \* in the functions.
// InitLeaderVars == /\ nextIndex = [i \in Server |-> [j \in Server |-> 1]]
// /\ matchIndex = [i \in Server |-> [j \in Server |-> 0]]
// InitLogVars == /\ log = [i \in Server |-> << >>]
// /\ commitIndex = [i \in Server |-> 0]
// Init == /\ messages = [m \in {} |-> 0]
// /\ InitHistoryVars
// /\ InitServerVars
// /\ InitCandidateVars
// /\ InitLeaderVars
// /\ InitLogVars
//
// init TLA+ server vars
pSyncNode->state = TAOS_SYNC_STATE_FOLLOWER;
pSyncNode->pRaftStore = raftStoreOpen(pSyncNode->raftStorePath);
if (pSyncNode->pRaftStore == NULL) {
sError("failed to open raft store. path: %s", pSyncNode->raftStorePath);
goto _error;
}
// init TLA+ candidate vars
pSyncNode->pVotesGranted = voteGrantedCreate(pSyncNode);
if (pSyncNode->pVotesGranted == NULL) {
sError("failed to create VotesGranted. vgId:%d", pSyncNode->vgId);
goto _error;
}
pSyncNode->pVotesRespond = votesRespondCreate(pSyncNode);
if (pSyncNode->pVotesRespond == NULL) {
sError("failed to create VotesRespond. vgId:%d", pSyncNode->vgId);
goto _error;
}
// init TLA+ leader vars
pSyncNode->pNextIndex = syncIndexMgrCreate(pSyncNode);
if (pSyncNode->pNextIndex == NULL) {
sError("failed to create SyncIndexMgr. vgId:%d", pSyncNode->vgId);
goto _error;
}
pSyncNode->pMatchIndex = syncIndexMgrCreate(pSyncNode);
if (pSyncNode->pMatchIndex == NULL) {
sError("failed to create SyncIndexMgr. vgId:%d", pSyncNode->vgId);
goto _error;
}
// init TLA+ log vars
pSyncNode->pLogStore = logStoreCreate(pSyncNode);
if (pSyncNode->pLogStore == NULL) {
sError("failed to create SyncLogStore. vgId:%d", pSyncNode->vgId);
goto _error;
}
SyncIndex commitIndex = SYNC_INDEX_INVALID;
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
SSnapshot snapshot = {0};
int32_t code = pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
if (code != 0) {
sError("failed to get snapshot info. vgId:%d, code:%d", pSyncNode->vgId, code);
goto _error;
}
if (snapshot.lastApplyIndex > commitIndex) {
commitIndex = snapshot.lastApplyIndex;
syncNodeEventLog(pSyncNode, "reset commit index by snapshot");
}
}
pSyncNode->commitIndex = commitIndex;
// timer ms init
pSyncNode->pingBaseLine = PING_TIMER_MS;
pSyncNode->electBaseLine = ELECT_TIMER_MS_MIN;
pSyncNode->hbBaseLine = HEARTBEAT_TIMER_MS;
// init ping timer
pSyncNode->pPingTimer = NULL;
pSyncNode->pingTimerMS = pSyncNode->pingBaseLine;
atomic_store_64(&pSyncNode->pingTimerLogicClock, 0);
atomic_store_64(&pSyncNode->pingTimerLogicClockUser, 0);
pSyncNode->FpPingTimerCB = syncNodeEqPingTimer;
pSyncNode->pingTimerCounter = 0;
// init elect timer
pSyncNode->pElectTimer = NULL;
pSyncNode->electTimerMS = syncUtilElectRandomMS(pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine);
atomic_store_64(&pSyncNode->electTimerLogicClock, 0);
atomic_store_64(&pSyncNode->electTimerLogicClockUser, 0);
pSyncNode->FpElectTimerCB = syncNodeEqElectTimer;
pSyncNode->electTimerCounter = 0;
// init heartbeat timer
pSyncNode->pHeartbeatTimer = NULL;
pSyncNode->heartbeatTimerMS = pSyncNode->hbBaseLine;
atomic_store_64(&pSyncNode->heartbeatTimerLogicClock, 0);
atomic_store_64(&pSyncNode->heartbeatTimerLogicClockUser, 0);
pSyncNode->FpHeartbeatTimerCB = syncNodeEqHeartbeatTimer;
pSyncNode->heartbeatTimerCounter = 0;
// init peer heartbeat timer
for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
syncHbTimerInit(pSyncNode, &(pSyncNode->peerHeartbeatTimerArr[i]), (pSyncNode->replicasId)[i]);
}
// init callback
pSyncNode->FpOnPing = syncNodeOnPingCb;
pSyncNode->FpOnPingReply = syncNodeOnPingReplyCb;
pSyncNode->FpOnClientRequest = syncNodeOnClientRequestCb;
pSyncNode->FpOnTimeout = syncNodeOnTimeoutCb;
pSyncNode->FpOnSnapshotSend = syncNodeOnSnapshotSendCb;
pSyncNode->FpOnSnapshotRsp = syncNodeOnSnapshotRspCb;
if (pSyncNode->pRaftCfg->snapshotStrategy) {
sInfo("vgId:%d, sync node use snapshot", pSyncNode->vgId);
pSyncNode->FpOnRequestVote = syncNodeOnRequestVoteSnapshotCb;
pSyncNode->FpOnRequestVoteReply = syncNodeOnRequestVoteReplySnapshotCb;
pSyncNode->FpOnAppendEntries = syncNodeOnAppendEntriesSnapshotCb;
pSyncNode->FpOnAppendEntriesReply = syncNodeOnAppendEntriesReplySnapshotCb;
} else {
sInfo("vgId:%d, sync node do not use snapshot", pSyncNode->vgId);
pSyncNode->FpOnRequestVote = syncNodeOnRequestVoteCb;
pSyncNode->FpOnRequestVoteReply = syncNodeOnRequestVoteReplyCb;
pSyncNode->FpOnAppendEntries = syncNodeOnAppendEntriesCb;
pSyncNode->FpOnAppendEntriesReply = syncNodeOnAppendEntriesReplyCb;
}
// tools
pSyncNode->pSyncRespMgr = syncRespMgrCreate(pSyncNode, SYNC_RESP_TTL_MS);
if (pSyncNode->pSyncRespMgr == NULL) {
sError("failed to create SyncRespMgr. vgId:%d", pSyncNode->vgId);
goto _error;
}
// restore state
pSyncNode->restoreFinish = false;
// snapshot senders
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
SSyncSnapshotSender* pSender = snapshotSenderCreate(pSyncNode, i);
// ASSERT(pSender != NULL);
(pSyncNode->senders)[i] = pSender;
}
// snapshot receivers
pSyncNode->pNewNodeReceiver = snapshotReceiverCreate(pSyncNode, EMPTY_RAFT_ID);
// is config changing
pSyncNode->changing = false;
// peer state
syncNodePeerStateInit(pSyncNode);
// start in syncNodeStart
// start raft
// syncNodeBecomeFollower(pSyncNode);
int64_t timeNow = taosGetTimestampMs();
pSyncNode->startTime = timeNow;
pSyncNode->leaderTime = timeNow;
pSyncNode->lastReplicateTime = timeNow;
// snapshotting
atomic_store_64(&pSyncNode->snapshottingIndex, SYNC_INDEX_INVALID);
syncNodeEventLog(pSyncNode, "sync open");
return pSyncNode;
_error:
if (pSyncInfo->pFsm) {
taosMemoryFree(pSyncInfo->pFsm);
pSyncInfo->pFsm = NULL;
}
syncNodeClose(pSyncNode);
pSyncNode = NULL;
return NULL;
}
void syncNodeMaybeUpdateCommitBySnapshot(SSyncNode* pSyncNode) {
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
SSnapshot snapshot;
int32_t code = pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
ASSERT(code == 0);
if (snapshot.lastApplyIndex > pSyncNode->commitIndex) {
pSyncNode->commitIndex = snapshot.lastApplyIndex;
}
}
}
void syncNodeStart(SSyncNode* pSyncNode) {
// start raft
if (pSyncNode->replicaNum == 1) {
raftStoreNextTerm(pSyncNode->pRaftStore);
syncNodeBecomeLeader(pSyncNode, "one replica start");
// Raft 3.6.2 Committing entries from previous terms
syncNodeAppendNoop(pSyncNode);
syncMaybeAdvanceCommitIndex(pSyncNode);
} else {
syncNodeBecomeFollower(pSyncNode, "first start");
}
if (pSyncNode->vgId == 1) {
int32_t ret = 0;
ret = syncNodeStartPingTimer(pSyncNode);
ASSERT(ret == 0);
}
}
void syncNodeStartStandBy(SSyncNode* pSyncNode) {
// state change
pSyncNode->state = TAOS_SYNC_STATE_FOLLOWER;
syncNodeStopHeartbeatTimer(pSyncNode);
// reset elect timer, long enough
int32_t electMS = TIMER_MAX_MS;
int32_t ret = syncNodeRestartElectTimer(pSyncNode, electMS);
ASSERT(ret == 0);
if (pSyncNode->vgId == 1) {
int32_t ret = 0;
ret = syncNodeStartPingTimer(pSyncNode);
ASSERT(ret == 0);
}
}
void syncNodeClose(SSyncNode* pSyncNode) {
syncNodeEventLog(pSyncNode, "sync close");
if (pSyncNode == NULL) {
return;
}
int32_t ret;
ret = raftStoreClose(pSyncNode->pRaftStore);
ASSERT(ret == 0);
syncRespMgrDestroy(pSyncNode->pSyncRespMgr);
pSyncNode->pSyncRespMgr = NULL;
voteGrantedDestroy(pSyncNode->pVotesGranted);
pSyncNode->pVotesGranted = NULL;
votesRespondDestory(pSyncNode->pVotesRespond);
pSyncNode->pVotesRespond = NULL;
syncIndexMgrDestroy(pSyncNode->pNextIndex);
pSyncNode->pNextIndex = NULL;
syncIndexMgrDestroy(pSyncNode->pMatchIndex);
pSyncNode->pMatchIndex = NULL;
logStoreDestory(pSyncNode->pLogStore);
pSyncNode->pLogStore = NULL;
raftCfgClose(pSyncNode->pRaftCfg);
pSyncNode->pRaftCfg = NULL;
syncNodeStopPingTimer(pSyncNode);
syncNodeStopElectTimer(pSyncNode);
syncNodeStopHeartbeatTimer(pSyncNode);
if (pSyncNode->pFsm != NULL) {
taosMemoryFree(pSyncNode->pFsm);
}
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
if ((pSyncNode->senders)[i] != NULL) {
snapshotSenderDestroy((pSyncNode->senders)[i]);
(pSyncNode->senders)[i] = NULL;
}
}
if (pSyncNode->pNewNodeReceiver != NULL) {
snapshotReceiverDestroy(pSyncNode->pNewNodeReceiver);
pSyncNode->pNewNodeReceiver = NULL;
}
taosMemoryFree(pSyncNode);
}
// option
// bool syncNodeSnapshotEnable(SSyncNode* pSyncNode) { return pSyncNode->pRaftCfg->snapshotEnable; }
ESyncStrategy syncNodeStrategy(SSyncNode* pSyncNode) { return pSyncNode->pRaftCfg->snapshotStrategy; }
// ping --------------
int32_t syncNodePing(SSyncNode* pSyncNode, const SRaftId* destRaftId, SyncPing* pMsg) {
syncPingLog2((char*)"==syncNodePing==", pMsg);
int32_t ret = 0;
SRpcMsg rpcMsg;
syncPing2RpcMsg(pMsg, &rpcMsg);
syncRpcMsgLog2((char*)"==syncNodePing==", &rpcMsg);
ret = syncNodeSendMsgById(destRaftId, pSyncNode, &rpcMsg);
return ret;
}
int32_t syncNodePingSelf(SSyncNode* pSyncNode) {
int32_t ret = 0;
SyncPing* pMsg = syncPingBuild3(&pSyncNode->myRaftId, &pSyncNode->myRaftId, pSyncNode->vgId);
ret = syncNodePing(pSyncNode, &pMsg->destId, pMsg);
ASSERT(ret == 0);
syncPingDestroy(pMsg);
return ret;
}
int32_t syncNodePingPeers(SSyncNode* pSyncNode) {
int32_t ret = 0;
for (int i = 0; i < pSyncNode->peersNum; ++i) {
SRaftId* destId = &(pSyncNode->peersId[i]);
SyncPing* pMsg = syncPingBuild3(&pSyncNode->myRaftId, destId, pSyncNode->vgId);
ret = syncNodePing(pSyncNode, destId, pMsg);
ASSERT(ret == 0);
syncPingDestroy(pMsg);
}
return ret;
}
int32_t syncNodePingAll(SSyncNode* pSyncNode) {
int32_t ret = 0;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
SRaftId* destId = &(pSyncNode->replicasId[i]);
SyncPing* pMsg = syncPingBuild3(&pSyncNode->myRaftId, destId, pSyncNode->vgId);
ret = syncNodePing(pSyncNode, destId, pMsg);
ASSERT(ret == 0);
syncPingDestroy(pMsg);
}
return ret;
}
// timer control --------------
int32_t syncNodeStartPingTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
if (syncEnvIsStart()) {
taosTmrReset(pSyncNode->FpPingTimerCB, pSyncNode->pingTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pPingTimer);
atomic_store_64(&pSyncNode->pingTimerLogicClock, pSyncNode->pingTimerLogicClockUser);
} else {
sError("vgId:%d, start ping timer error, sync env is stop", pSyncNode->vgId);
}
return ret;
}
int32_t syncNodeStopPingTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
atomic_add_fetch_64(&pSyncNode->pingTimerLogicClockUser, 1);
taosTmrStop(pSyncNode->pPingTimer);
pSyncNode->pPingTimer = NULL;
return ret;
}
int32_t syncNodeStartElectTimer(SSyncNode* pSyncNode, int32_t ms) {
int32_t ret = 0;
if (syncEnvIsStart()) {
pSyncNode->electTimerMS = ms;
taosTmrReset(pSyncNode->FpElectTimerCB, pSyncNode->electTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pElectTimer);
atomic_store_64(&pSyncNode->electTimerLogicClock, pSyncNode->electTimerLogicClockUser);
/*
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "elect timer reset, ms:%d", ms);
syncNodeEventLog(pSyncNode, logBuf);
} while (0);
*/
} else {
sError("vgId:%d, start elect timer error, sync env is stop", pSyncNode->vgId);
}
return ret;
}
int32_t syncNodeStopElectTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
atomic_add_fetch_64(&pSyncNode->electTimerLogicClockUser, 1);
taosTmrStop(pSyncNode->pElectTimer);
pSyncNode->pElectTimer = NULL;
// sTrace("vgId:%d, sync %s stop elect timer", pSyncNode->vgId, syncUtilState2String(pSyncNode->state));
return ret;
}
int32_t syncNodeRestartElectTimer(SSyncNode* pSyncNode, int32_t ms) {
int32_t ret = 0;
syncNodeStopElectTimer(pSyncNode);
syncNodeStartElectTimer(pSyncNode, ms);
return ret;
}
int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
int32_t electMS;
if (pSyncNode->pRaftCfg->isStandBy) {
electMS = TIMER_MAX_MS;
} else {
electMS = syncUtilElectRandomMS(pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine);
}
ret = syncNodeRestartElectTimer(pSyncNode, electMS);
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "reset elect timer, min:%d, max:%d, ms:%d", pSyncNode->electBaseLine,
2 * pSyncNode->electBaseLine, electMS);
syncNodeEventLog(pSyncNode, logBuf);
} while (0);
return ret;
}
static int32_t syncNodeDoStartHeartbeatTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
if (syncEnvIsStart()) {
taosTmrReset(pSyncNode->FpHeartbeatTimerCB, pSyncNode->heartbeatTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pHeartbeatTimer);
atomic_store_64(&pSyncNode->heartbeatTimerLogicClock, pSyncNode->heartbeatTimerLogicClockUser);
} else {
sError("vgId:%d, start heartbeat timer error, sync env is stop", pSyncNode->vgId);
}
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "start heartbeat timer, ms:%d", pSyncNode->heartbeatTimerMS);
syncNodeEventLog(pSyncNode, logBuf);
} while (0);
return ret;
}
int32_t syncNodeStartHeartbeatTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
if (syncNodeIsMnode(pSyncNode)) {
pSyncNode->heartbeatTimerMS = pSyncNode->hbBaseLine;
ret = syncNodeDoStartHeartbeatTimer(pSyncNode);
} else {
do {
for (int i = 0; i < pSyncNode->peersNum; ++i) {
SSyncTimer* pSyncTimer = syncNodeGetHbTimer(pSyncNode, &(pSyncNode->peersId[i]));
syncHbTimerStart(pSyncNode, pSyncTimer);
}
} while (0);
}
return ret;
}
int32_t syncNodeStartHeartbeatTimerMS(SSyncNode* pSyncNode, int32_t ms) {
pSyncNode->heartbeatTimerMS = ms;
int32_t ret = syncNodeDoStartHeartbeatTimer(pSyncNode);
return ret;
}
int32_t syncNodeStartHeartbeatTimerNow(SSyncNode* pSyncNode) {
pSyncNode->heartbeatTimerMS = 1;
int32_t ret = syncNodeDoStartHeartbeatTimer(pSyncNode);
return ret;
}
int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode) {
int32_t ret = 0;
atomic_add_fetch_64(&pSyncNode->heartbeatTimerLogicClockUser, 1);
taosTmrStop(pSyncNode->pHeartbeatTimer);
pSyncNode->pHeartbeatTimer = NULL;
sTrace("vgId:%d, sync %s stop heartbeat timer", pSyncNode->vgId, syncUtilState2String(pSyncNode->state));
do {
for (int i = 0; i < pSyncNode->peersNum; ++i) {
SSyncTimer* pSyncTimer = syncNodeGetHbTimer(pSyncNode, &(pSyncNode->peersId[i]));
syncHbTimerStop(pSyncNode, pSyncTimer);
}
} while (0);
return ret;
}
int32_t syncNodeRestartHeartbeatTimer(SSyncNode* pSyncNode) {
syncNodeStopHeartbeatTimer(pSyncNode);
syncNodeStartHeartbeatTimer(pSyncNode);
return 0;
}
int32_t syncNodeRestartHeartbeatTimerNow(SSyncNode* pSyncNode) {
syncNodeStopHeartbeatTimer(pSyncNode);
syncNodeStartHeartbeatTimerNow(pSyncNode);
return 0;
}
int32_t syncNodeRestartNowHeartbeatTimerMS(SSyncNode* pSyncNode, int32_t ms) {
syncNodeStopHeartbeatTimer(pSyncNode);
syncNodeStartHeartbeatTimerMS(pSyncNode, ms);
return 0;
}
// utils --------------
int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
SEpSet epSet;
syncUtilraftId2EpSet(destRaftId, &epSet);
if (pSyncNode->FpSendMsg != NULL) {
// htonl
syncUtilMsgHtoN(pMsg->pCont);
pMsg->info.noResp = 1;
pSyncNode->FpSendMsg(&epSet, pMsg);
} else {
sError("vgId:%d, sync send msg by id error, fp-send-msg is null", pSyncNode->vgId);
return -1;
}
return 0;
}
int32_t syncNodeSendMsgByInfo(const SNodeInfo* nodeInfo, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
SEpSet epSet;
syncUtilnodeInfo2EpSet(nodeInfo, &epSet);
if (pSyncNode->FpSendMsg != NULL) {
// htonl
syncUtilMsgHtoN(pMsg->pCont);
pMsg->info.noResp = 1;
pSyncNode->FpSendMsg(&epSet, pMsg);
} else {
sError("vgId:%d, sync send msg by info error, fp-send-msg is null", pSyncNode->vgId);
}
return 0;
}
cJSON* syncNode2Json(const SSyncNode* pSyncNode) {
char u64buf[128] = {0};
cJSON* pRoot = cJSON_CreateObject();
if (pSyncNode != NULL) {
// init by SSyncInfo
cJSON_AddNumberToObject(pRoot, "vgId", pSyncNode->vgId);
cJSON_AddItemToObject(pRoot, "SRaftCfg", raftCfg2Json(pSyncNode->pRaftCfg));
cJSON_AddStringToObject(pRoot, "path", pSyncNode->path);
cJSON_AddStringToObject(pRoot, "raftStorePath", pSyncNode->raftStorePath);
cJSON_AddStringToObject(pRoot, "configPath", pSyncNode->configPath);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->pWal);
cJSON_AddStringToObject(pRoot, "pWal", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->msgcb);
cJSON_AddStringToObject(pRoot, "rpcClient", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpSendMsg);
cJSON_AddStringToObject(pRoot, "FpSendMsg", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->msgcb);
cJSON_AddStringToObject(pRoot, "queue", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpEqMsg);
cJSON_AddStringToObject(pRoot, "FpEqMsg", u64buf);
// init internal
cJSON* pMe = syncUtilNodeInfo2Json(&pSyncNode->myNodeInfo);
cJSON_AddItemToObject(pRoot, "myNodeInfo", pMe);
cJSON* pRaftId = syncUtilRaftId2Json(&pSyncNode->myRaftId);
cJSON_AddItemToObject(pRoot, "myRaftId", pRaftId);
cJSON_AddNumberToObject(pRoot, "peersNum", pSyncNode->peersNum);
cJSON* pPeers = cJSON_CreateArray();
cJSON_AddItemToObject(pRoot, "peersNodeInfo", pPeers);
for (int i = 0; i < pSyncNode->peersNum; ++i) {
cJSON_AddItemToArray(pPeers, syncUtilNodeInfo2Json(&pSyncNode->peersNodeInfo[i]));
}
cJSON* pPeersId = cJSON_CreateArray();
cJSON_AddItemToObject(pRoot, "peersId", pPeersId);
for (int i = 0; i < pSyncNode->peersNum; ++i) {
cJSON_AddItemToArray(pPeersId, syncUtilRaftId2Json(&pSyncNode->peersId[i]));
}
cJSON_AddNumberToObject(pRoot, "replicaNum", pSyncNode->replicaNum);
cJSON* pReplicasId = cJSON_CreateArray();
cJSON_AddItemToObject(pRoot, "replicasId", pReplicasId);
for (int i = 0; i < pSyncNode->replicaNum; ++i) {
cJSON_AddItemToArray(pReplicasId, syncUtilRaftId2Json(&pSyncNode->replicasId[i]));
}
// raft algorithm
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->pFsm);
cJSON_AddStringToObject(pRoot, "pFsm", u64buf);
cJSON_AddNumberToObject(pRoot, "quorum", pSyncNode->quorum);
cJSON* pLaderCache = syncUtilRaftId2Json(&pSyncNode->leaderCache);
cJSON_AddItemToObject(pRoot, "leaderCache", pLaderCache);
// life cycle
snprintf(u64buf, sizeof(u64buf), "%" PRId64, pSyncNode->rid);
cJSON_AddStringToObject(pRoot, "rid", u64buf);
// tla+ server vars
cJSON_AddNumberToObject(pRoot, "state", pSyncNode->state);
cJSON_AddStringToObject(pRoot, "state_str", syncUtilState2String(pSyncNode->state));
cJSON_AddItemToObject(pRoot, "pRaftStore", raftStore2Json(pSyncNode->pRaftStore));
// tla+ candidate vars
cJSON_AddItemToObject(pRoot, "pVotesGranted", voteGranted2Json(pSyncNode->pVotesGranted));
cJSON_AddItemToObject(pRoot, "pVotesRespond", votesRespond2Json(pSyncNode->pVotesRespond));
// tla+ leader vars
cJSON_AddItemToObject(pRoot, "pNextIndex", syncIndexMgr2Json(pSyncNode->pNextIndex));
cJSON_AddItemToObject(pRoot, "pMatchIndex", syncIndexMgr2Json(pSyncNode->pMatchIndex));
// tla+ log vars
cJSON_AddItemToObject(pRoot, "pLogStore", logStore2Json(pSyncNode->pLogStore));
snprintf(u64buf, sizeof(u64buf), "%" PRId64, pSyncNode->commitIndex);
cJSON_AddStringToObject(pRoot, "commitIndex", u64buf);
// timer ms init
cJSON_AddNumberToObject(pRoot, "pingBaseLine", pSyncNode->pingBaseLine);
cJSON_AddNumberToObject(pRoot, "electBaseLine", pSyncNode->electBaseLine);
cJSON_AddNumberToObject(pRoot, "hbBaseLine", pSyncNode->hbBaseLine);
// ping timer
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->pPingTimer);
cJSON_AddStringToObject(pRoot, "pPingTimer", u64buf);
cJSON_AddNumberToObject(pRoot, "pingTimerMS", pSyncNode->pingTimerMS);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->pingTimerLogicClock);
cJSON_AddStringToObject(pRoot, "pingTimerLogicClock", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->pingTimerLogicClockUser);
cJSON_AddStringToObject(pRoot, "pingTimerLogicClockUser", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpPingTimerCB);
cJSON_AddStringToObject(pRoot, "FpPingTimerCB", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->pingTimerCounter);
cJSON_AddStringToObject(pRoot, "pingTimerCounter", u64buf);
// elect timer
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->pElectTimer);
cJSON_AddStringToObject(pRoot, "pElectTimer", u64buf);
cJSON_AddNumberToObject(pRoot, "electTimerMS", pSyncNode->electTimerMS);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->electTimerLogicClock);
cJSON_AddStringToObject(pRoot, "electTimerLogicClock", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->electTimerLogicClockUser);
cJSON_AddStringToObject(pRoot, "electTimerLogicClockUser", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpElectTimerCB);
cJSON_AddStringToObject(pRoot, "FpElectTimerCB", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->electTimerCounter);
cJSON_AddStringToObject(pRoot, "electTimerCounter", u64buf);
// heartbeat timer
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->pHeartbeatTimer);
cJSON_AddStringToObject(pRoot, "pHeartbeatTimer", u64buf);
cJSON_AddNumberToObject(pRoot, "heartbeatTimerMS", pSyncNode->heartbeatTimerMS);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->heartbeatTimerLogicClock);
cJSON_AddStringToObject(pRoot, "heartbeatTimerLogicClock", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->heartbeatTimerLogicClockUser);
cJSON_AddStringToObject(pRoot, "heartbeatTimerLogicClockUser", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpHeartbeatTimerCB);
cJSON_AddStringToObject(pRoot, "FpHeartbeatTimerCB", u64buf);
snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pSyncNode->heartbeatTimerCounter);
cJSON_AddStringToObject(pRoot, "heartbeatTimerCounter", u64buf);
// callback
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnPing);
cJSON_AddStringToObject(pRoot, "FpOnPing", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnPingReply);
cJSON_AddStringToObject(pRoot, "FpOnPingReply", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnRequestVote);
cJSON_AddStringToObject(pRoot, "FpOnRequestVote", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnRequestVoteReply);
cJSON_AddStringToObject(pRoot, "FpOnRequestVoteReply", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnAppendEntries);
cJSON_AddStringToObject(pRoot, "FpOnAppendEntries", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnAppendEntriesReply);
cJSON_AddStringToObject(pRoot, "FpOnAppendEntriesReply", u64buf);
snprintf(u64buf, sizeof(u64buf), "%p", pSyncNode->FpOnTimeout);
cJSON_AddStringToObject(pRoot, "FpOnTimeout", u64buf);
// restoreFinish
cJSON_AddNumberToObject(pRoot, "restoreFinish", pSyncNode->restoreFinish);
// snapshot senders
cJSON* pSenders = cJSON_CreateArray();
cJSON_AddItemToObject(pRoot, "senders", pSenders);
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
cJSON_AddItemToArray(pSenders, snapshotSender2Json((pSyncNode->senders)[i]));
}
// snapshot receivers
cJSON* pReceivers = cJSON_CreateArray();
cJSON_AddItemToObject(pRoot, "receiver", snapshotReceiver2Json(pSyncNode->pNewNodeReceiver));
// changing
cJSON_AddNumberToObject(pRoot, "changing", pSyncNode->changing);
}
cJSON* pJson = cJSON_CreateObject();
cJSON_AddItemToObject(pJson, "SSyncNode", pRoot);
return pJson;
}
char* syncNode2Str(const SSyncNode* pSyncNode) {
cJSON* pJson = syncNode2Json(pSyncNode);
char* serialized = cJSON_Print(pJson);
cJSON_Delete(pJson);
return serialized;
}
inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
int32_t userStrLen = strlen(str);
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0};
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
}
SyncIndex logLastIndex = SYNC_INDEX_INVALID;
SyncIndex logBeginIndex = SYNC_INDEX_INVALID;
if (pSyncNode->pLogStore != NULL) {
logLastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
logBeginIndex = pSyncNode->pLogStore->syncLogBeginIndex(pSyncNode->pLogStore);
}
char* pCfgStr = syncCfg2SimpleStr(&(pSyncNode->pRaftCfg->cfg));
char* printStr = "";
if (pCfgStr != NULL) {
printStr = pCfgStr;
}
if (userStrLen < 256) {
char logBuf[256 + 256];
if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
snprintf(logBuf, sizeof(logBuf),
"vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
", snap-tm:%" PRIu64
", sby:%d, "
"stgy:%d, bch:%d, "
"r-num:%d, "
"lcfg:%" PRId64 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s",
pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
pSyncNode->heartbeatTimerLogicClockUser, printStr);
} else {
snprintf(logBuf, sizeof(logBuf), "%s", str);
}
// sDebug("%s", logBuf);
// sInfo("%s", logBuf);
sTrace("%s", logBuf);
} else {
int len = 256 + userStrLen;
char* s = (char*)taosMemoryMalloc(len);
if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
snprintf(s, len,
"vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
", snap-tm:%" PRIu64
", sby:%d, "
"stgy:%d, bch:%d, "
"r-num:%d, "
"lcfg:%" PRId64 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s",
pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
pSyncNode->heartbeatTimerLogicClockUser, printStr);
} else {
snprintf(s, len, "%s", str);
}
// sDebug("%s", s);
// sInfo("%s", s);
sTrace("%s", s);
taosMemoryFree(s);
}
taosMemoryFree(pCfgStr);
}
inline void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
int32_t userStrLen = strlen(str);
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0};
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
}
SyncIndex logLastIndex = SYNC_INDEX_INVALID;
SyncIndex logBeginIndex = SYNC_INDEX_INVALID;
if (pSyncNode->pLogStore != NULL) {
logLastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
logBeginIndex = pSyncNode->pLogStore->syncLogBeginIndex(pSyncNode->pLogStore);
}
char* pCfgStr = syncCfg2SimpleStr(&(pSyncNode->pRaftCfg->cfg));
char* printStr = "";
if (pCfgStr != NULL) {
printStr = pCfgStr;
}
if (userStrLen < 256) {
char logBuf[256 + 256];
if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
snprintf(logBuf, sizeof(logBuf),
"vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
", snap-tm:%" PRIu64
", sby:%d, "
"stgy:%d, bch:%d, "
"r-num:%d, "
"lcfg:%" PRId64 ", chging:%d, rsto:%d, %s",
pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
pSyncNode->restoreFinish, printStr);
} else {
snprintf(logBuf, sizeof(logBuf), "%s", str);
}
sError("%s", logBuf);
} else {
int len = 256 + userStrLen;
char* s = (char*)taosMemoryMalloc(len);
if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
snprintf(s, len,
"vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
", snap-tm:%" PRIu64
", sby:%d, "
"stgy:%d, bch:%d, "
"r-num:%d, "
"lcfg:%" PRId64 ", chging:%d, rsto:%d, %s",
pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
pSyncNode->restoreFinish, printStr);
} else {
snprintf(s, len, "%s", str);
}
sError("%s", s);
taosMemoryFree(s);
}
taosMemoryFree(pCfgStr);
}
inline char* syncNode2SimpleStr(const SSyncNode* pSyncNode) {
int len = 256;
char* s = (char*)taosMemoryMalloc(len);
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0};
if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
}
SyncIndex logLastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
SyncIndex logBeginIndex = pSyncNode->pLogStore->syncLogBeginIndex(pSyncNode->pLogStore);
snprintf(s, len,
"vgId:%d, sync %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
", sby:%d, "
"r-num:%d, "
"lcfg:%" PRId64 ", chging:%d, rsto:%d",
pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, pSyncNode->pRaftCfg->isStandBy,
pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing, pSyncNode->restoreFinish);
return s;
}
inline bool syncNodeInConfig(SSyncNode* pSyncNode, const SSyncCfg* config) {
bool b1 = false;
bool b2 = false;
for (int i = 0; i < config->replicaNum; ++i) {
if (strcmp((config->nodeInfo)[i].nodeFqdn, pSyncNode->myNodeInfo.nodeFqdn) == 0 &&
(config->nodeInfo)[i].nodePort == pSyncNode->myNodeInfo.nodePort) {
b1 = true;
break;
}
}
for (int i = 0; i < config->replicaNum; ++i) {
SRaftId raftId;
raftId.addr = syncUtilAddr2U64((config->nodeInfo)[i].nodeFqdn, (config->nodeInfo)[i].nodePort);
raftId.vgId = pSyncNode->vgId;
if (syncUtilSameId(&raftId, &(pSyncNode->myRaftId))) {
b2 = true;
break;
}
}
ASSERT(b1 == b2);
return b1;
}
void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex lastConfigChangeIndex) {
SSyncCfg oldConfig = pSyncNode->pRaftCfg->cfg;
pSyncNode->pRaftCfg->cfg = *pNewConfig;
pSyncNode->pRaftCfg->lastConfigIndex = lastConfigChangeIndex;
bool IamInOld = syncNodeInConfig(pSyncNode, &oldConfig);
bool IamInNew = syncNodeInConfig(pSyncNode, pNewConfig);
bool isDrop = false;
bool isAdd = false;
if (IamInOld && !IamInNew) {
isDrop = true;
} else {
isDrop = false;
}
if (!IamInOld && IamInNew) {
isAdd = true;
} else {
isAdd = false;
}
// log begin config change
do {
char eventLog[256];
char* pOldCfgStr = syncCfg2SimpleStr(&oldConfig);
char* pNewCfgStr = syncCfg2SimpleStr(pNewConfig);
snprintf(eventLog, sizeof(eventLog), "begin do config change, from %s to %s", pOldCfgStr, pNewCfgStr);
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(pOldCfgStr);
taosMemoryFree(pNewCfgStr);
} while (0);
if (IamInNew) {
pSyncNode->pRaftCfg->isStandBy = 0; // change isStandBy to normal
}
if (isDrop) {
pSyncNode->pRaftCfg->isStandBy = 1; // set standby
}
// add last config index
raftCfgAddConfigIndex(pSyncNode->pRaftCfg, lastConfigChangeIndex);
if (IamInNew) {
//-----------------------------------------
int32_t ret = 0;
// save snapshot senders
int32_t oldReplicaNum = pSyncNode->replicaNum;
SRaftId oldReplicasId[TSDB_MAX_REPLICA];
memcpy(oldReplicasId, pSyncNode->replicasId, sizeof(oldReplicasId));
SSyncSnapshotSender* oldSenders[TSDB_MAX_REPLICA];
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
oldSenders[i] = (pSyncNode->senders)[i];
char* eventLog = snapshotSender2SimpleStr(oldSenders[i], "snapshot sender save old");
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(eventLog);
}
// init internal
pSyncNode->myNodeInfo = pSyncNode->pRaftCfg->cfg.nodeInfo[pSyncNode->pRaftCfg->cfg.myIndex];
syncUtilnodeInfo2raftId(&pSyncNode->myNodeInfo, pSyncNode->vgId, &pSyncNode->myRaftId);
// init peersNum, peers, peersId
pSyncNode->peersNum = pSyncNode->pRaftCfg->cfg.replicaNum - 1;
int j = 0;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
if (i != pSyncNode->pRaftCfg->cfg.myIndex) {
pSyncNode->peersNodeInfo[j] = pSyncNode->pRaftCfg->cfg.nodeInfo[i];
j++;
}
}
for (int i = 0; i < pSyncNode->peersNum; ++i) {
syncUtilnodeInfo2raftId(&pSyncNode->peersNodeInfo[i], pSyncNode->vgId, &pSyncNode->peersId[i]);
}
// init replicaNum, replicasId
pSyncNode->replicaNum = pSyncNode->pRaftCfg->cfg.replicaNum;
for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
syncUtilnodeInfo2raftId(&pSyncNode->pRaftCfg->cfg.nodeInfo[i], pSyncNode->vgId, &pSyncNode->replicasId[i]);
}
syncIndexMgrUpdate(pSyncNode->pNextIndex, pSyncNode);
syncIndexMgrUpdate(pSyncNode->pMatchIndex, pSyncNode);
voteGrantedUpdate(pSyncNode->pVotesGranted, pSyncNode);
votesRespondUpdate(pSyncNode->pVotesRespond, pSyncNode);
pSyncNode->quorum = syncUtilQuorum(pSyncNode->pRaftCfg->cfg.replicaNum);
// reset snapshot senders
// clear new
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
(pSyncNode->senders)[i] = NULL;
}
// reset new
for (int i = 0; i < pSyncNode->replicaNum; ++i) {
// reset sender
bool reset = false;
for (int j = 0; j < TSDB_MAX_REPLICA; ++j) {
if (syncUtilSameId(&(pSyncNode->replicasId)[i], &oldReplicasId[j])) {
char host[128];
uint16_t port;
syncUtilU642Addr((pSyncNode->replicasId)[i].addr, host, sizeof(host), &port);
do {
char eventLog[256];
snprintf(eventLog, sizeof(eventLog), "snapshot sender reset for: %" PRIu64 ", newIndex:%d, %s:%d, %p",
(pSyncNode->replicasId)[i].addr, i, host, port, oldSenders[j]);
syncNodeEventLog(pSyncNode, eventLog);
} while (0);
(pSyncNode->senders)[i] = oldSenders[j];
oldSenders[j] = NULL;
reset = true;
// reset replicaIndex
int32_t oldreplicaIndex = (pSyncNode->senders)[i]->replicaIndex;
(pSyncNode->senders)[i]->replicaIndex = i;
do {
char eventLog[256];
snprintf(eventLog, sizeof(eventLog),
"snapshot sender udpate replicaIndex from %d to %d, %s:%d, %p, reset:%d", oldreplicaIndex, i, host,
port, (pSyncNode->senders)[i], reset);
syncNodeEventLog(pSyncNode, eventLog);
} while (0);
}
}
}
// create new
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
if ((pSyncNode->senders)[i] == NULL) {
(pSyncNode->senders)[i] = snapshotSenderCreate(pSyncNode, i);
char* eventLog = snapshotSender2SimpleStr((pSyncNode->senders)[i], "snapshot sender create new");
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(eventLog);
}
}
// free old
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
if (oldSenders[i] != NULL) {
snapshotSenderDestroy(oldSenders[i]);
do {
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "snapshot sender delete old %p replica-index:%d", oldSenders[i], i);
syncNodeEventLog(pSyncNode, eventLog);
} while (0);
oldSenders[i] = NULL;
}
}
// persist cfg
raftCfgPersist(pSyncNode->pRaftCfg);
char tmpbuf[512];
char* oldStr = syncCfg2SimpleStr(&oldConfig);
char* newStr = syncCfg2SimpleStr(pNewConfig);
snprintf(tmpbuf, sizeof(tmpbuf), "config change from %d to %d, index:%" PRId64 ", %s --> %s",
oldConfig.replicaNum, pNewConfig->replicaNum, lastConfigChangeIndex, oldStr, newStr);
taosMemoryFree(oldStr);
taosMemoryFree(newStr);
// change isStandBy to normal (election timeout)
if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
syncNodeBecomeLeader(pSyncNode, tmpbuf);
// Raft 3.6.2 Committing entries from previous terms
syncNodeAppendNoop(pSyncNode);
syncMaybeAdvanceCommitIndex(pSyncNode);
} else {
syncNodeBecomeFollower(pSyncNode, tmpbuf);
}
} else {
// persist cfg
raftCfgPersist(pSyncNode->pRaftCfg);
char tmpbuf[512];
char* oldStr = syncCfg2SimpleStr(&oldConfig);
char* newStr = syncCfg2SimpleStr(pNewConfig);
snprintf(tmpbuf, sizeof(tmpbuf), "do not config change from %d to %d, index:%" PRId64 ", %s --> %s",
oldConfig.replicaNum, pNewConfig->replicaNum, lastConfigChangeIndex, oldStr, newStr);
taosMemoryFree(oldStr);
taosMemoryFree(newStr);
syncNodeEventLog(pSyncNode, tmpbuf);
}
_END:
// log end config change
do {
char eventLog[256];
char* pOldCfgStr = syncCfg2SimpleStr(&oldConfig);
char* pNewCfgStr = syncCfg2SimpleStr(pNewConfig);
snprintf(eventLog, sizeof(eventLog), "end do config change, from %s to %s", pOldCfgStr, pNewCfgStr);
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(pOldCfgStr);
taosMemoryFree(pNewCfgStr);
} while (0);
return;
}
SSyncNode* syncNodeAcquire(int64_t rid) {
SSyncNode* pNode = taosAcquireRef(tsNodeRefId, rid);
if (pNode == NULL) {
sTrace("failed to acquire node from refId:%" PRId64, rid);
}
return pNode;
}
void syncNodeRelease(SSyncNode* pNode) { taosReleaseRef(tsNodeRefId, pNode->rid); }
// raft state change --------------
void syncNodeUpdateTerm(SSyncNode* pSyncNode, SyncTerm term) {
if (term > pSyncNode->pRaftStore->currentTerm) {
raftStoreSetTerm(pSyncNode->pRaftStore, term);
char tmpBuf[64];
snprintf(tmpBuf, sizeof(tmpBuf), "update term to %" PRIu64, term);
syncNodeBecomeFollower(pSyncNode, tmpBuf);
raftStoreClearVote(pSyncNode->pRaftStore);
}
}
void syncNodeUpdateTermWithoutStepDown(SSyncNode* pSyncNode, SyncTerm term) {
if (term > pSyncNode->pRaftStore->currentTerm) {
raftStoreSetTerm(pSyncNode->pRaftStore, term);
}
}
void syncNodeLeaderChangeRsp(SSyncNode* pSyncNode) { syncRespCleanRsp(pSyncNode->pSyncRespMgr); }
void syncNodeBecomeFollower(SSyncNode* pSyncNode, const char* debugStr) {
// maybe clear leader cache
if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
pSyncNode->leaderCache = EMPTY_RAFT_ID;
}
// state change
pSyncNode->state = TAOS_SYNC_STATE_FOLLOWER;
syncNodeStopHeartbeatTimer(pSyncNode);
// reset elect timer
syncNodeResetElectTimer(pSyncNode);
// send rsp to client
syncNodeLeaderChangeRsp(pSyncNode);
// call back
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpBecomeFollowerCb != NULL) {
pSyncNode->pFsm->FpBecomeFollowerCb(pSyncNode->pFsm);
}
// trace log
do {
int32_t debugStrLen = strlen(debugStr);
if (debugStrLen < 256) {
char eventLog[256 + 64];
snprintf(eventLog, sizeof(eventLog), "become follower %s", debugStr);
syncNodeEventLog(pSyncNode, eventLog);
} else {
char* eventLog = taosMemoryMalloc(debugStrLen + 64);
snprintf(eventLog, debugStrLen, "become follower %s", debugStr);
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(eventLog);
}
} while (0);
}
// TLA+ Spec
// \* Candidate i transitions to leader.
// BecomeLeader(i) ==
// /\ state[i] = Candidate
// /\ votesGranted[i] \in Quorum
// /\ state' = [state EXCEPT ![i] = Leader]
// /\ nextIndex' = [nextIndex EXCEPT ![i] =
// [j \in Server |-> Len(log[i]) + 1]]
// /\ matchIndex' = [matchIndex EXCEPT ![i] =
// [j \in Server |-> 0]]
// /\ elections' = elections \cup
// {[eterm |-> currentTerm[i],
// eleader |-> i,
// elog |-> log[i],
// evotes |-> votesGranted[i],
// evoterLog |-> voterLog[i]]}
// /\ UNCHANGED <<messages, currentTerm, votedFor, candidateVars, logVars>>
//
void syncNodeBecomeLeader(SSyncNode* pSyncNode, const char* debugStr) {
pSyncNode->leaderTime = taosGetTimestampMs();
// reset restoreFinish
pSyncNode->restoreFinish = false;
// state change
pSyncNode->state = TAOS_SYNC_STATE_LEADER;
// set leader cache
pSyncNode->leaderCache = pSyncNode->myRaftId;
for (int i = 0; i < pSyncNode->pNextIndex->replicaNum; ++i) {
// maybe overwrite myself, no harm
// just do it!
// pSyncNode->pNextIndex->index[i] = pSyncNode->pLogStore->getLastIndex(pSyncNode->pLogStore) + 1;
// maybe wal is deleted
SyncIndex lastIndex;
SyncTerm lastTerm;
int32_t code = syncNodeGetLastIndexTerm(pSyncNode, &lastIndex, &lastTerm);
ASSERT(code == 0);
pSyncNode->pNextIndex->index[i] = lastIndex + 1;
}
for (int i = 0; i < pSyncNode->pMatchIndex->replicaNum; ++i) {
// maybe overwrite myself, no harm
// just do it!
pSyncNode->pMatchIndex->index[i] = SYNC_INDEX_INVALID;
}
// update sender private term
SSyncSnapshotSender* pMySender = syncNodeGetSnapshotSender(pSyncNode, &(pSyncNode->myRaftId));
if (pMySender != NULL) {
for (int i = 0; i < pSyncNode->pMatchIndex->replicaNum; ++i) {
if ((pSyncNode->senders)[i]->privateTerm > pMySender->privateTerm) {
pMySender->privateTerm = (pSyncNode->senders)[i]->privateTerm;
}
}
(pMySender->privateTerm) += 100;
}
// close receiver
if (snapshotReceiverIsStart(pSyncNode->pNewNodeReceiver)) {
snapshotReceiverForceStop(pSyncNode->pNewNodeReceiver);
}
// stop elect timer
syncNodeStopElectTimer(pSyncNode);
// start heartbeat timer
syncNodeStartHeartbeatTimer(pSyncNode);
// send heartbeat right now
syncNodeHeartbeatPeers(pSyncNode);
// call back
if (pSyncNode->pFsm != NULL && pSyncNode->pFsm->FpBecomeLeaderCb != NULL) {
pSyncNode->pFsm->FpBecomeLeaderCb(pSyncNode->pFsm);
}
// trace log
do {
int32_t debugStrLen = strlen(debugStr);
if (debugStrLen < 256) {
char eventLog[256 + 64];
snprintf(eventLog, sizeof(eventLog), "become leader %s", debugStr);
syncNodeEventLog(pSyncNode, eventLog);
} else {
char* eventLog = taosMemoryMalloc(debugStrLen + 64);
snprintf(eventLog, debugStrLen, "become leader %s", debugStr);
syncNodeEventLog(pSyncNode, eventLog);
taosMemoryFree(eventLog);
}
} while (0);
}
void syncNodeCandidate2Leader(SSyncNode* pSyncNode) {
ASSERT(pSyncNode->state == TAOS_SYNC_STATE_CANDIDATE);
ASSERT(voteGrantedMajority(pSyncNode->pVotesGranted));
syncNodeBecomeLeader(pSyncNode, "candidate to leader");
syncNodeLog2("==state change syncNodeCandidate2Leader==", pSyncNode);
// Raft 3.6.2 Committing entries from previous terms
syncNodeAppendNoop(pSyncNode);
syncMaybeAdvanceCommitIndex(pSyncNode);
if (pSyncNode->replicaNum > 1) {
syncNodeDoReplicate(pSyncNode);
}
}
bool syncNodeIsMnode(SSyncNode* pSyncNode) { return (pSyncNode->vgId == 1); }
int32_t syncNodePeerStateInit(SSyncNode* pSyncNode) {
for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
pSyncNode->peerStates[i].lastSendIndex = SYNC_INDEX_INVALID;
pSyncNode->peerStates[i].lastSendTime = 0;
}
return 0;
}
void syncNodeStepDown(SSyncNode* pSyncNode, SyncTerm newTerm) {
ASSERT(pSyncNode->pRaftStore->currentTerm <= newTerm);
if (pSyncNode->pRaftStore->currentTerm < newTerm) {
raftStoreSetTerm(pSyncNode->pRaftStore, newTerm);
char tmpBuf[64];
snprintf(tmpBuf, sizeof(tmpBuf), "step down, update term to %" PRIu64, newTerm);
syncNodeBecomeFollower(pSyncNode, tmpBuf);
raftStoreClearVote(pSyncNode->pRaftStore);
} else {
if (pSyncNode->state != TAOS_SYNC_STATE_FOLLOWER) {
syncNodeBecomeFollower(pSyncNode, "step down");
}
}
}
void syncNodeFollower2Candidate(SSyncNode* pSyncNode) {
ASSERT(pSyncNode->state == TAOS_SYNC_STATE_FOLLOWER);
pSyncNode->state = TAOS_SYNC_STATE_CANDIDATE;
syncNodeEventLog(pSyncNode, "follower to candidate");
}
void syncNodeLeader2Follower(SSyncNode* pSyncNode) {
ASSERT(pSyncNode->state == TAOS_SYNC_STATE_LEADER);
syncNodeBecomeFollower(pSyncNode, "leader to follower");
syncNodeEventLog(pSyncNode, "leader to follower");
}
void syncNodeCandidate2Follower(SSyncNode* pSyncNode) {
ASSERT(pSyncNode->state == TAOS_SYNC_STATE_CANDIDATE);
syncNodeBecomeFollower(pSyncNode, "candidate to follower");
syncNodeEventLog(pSyncNode, "candidate to follower");
}
// raft vote --------------
// just called by syncNodeVoteForSelf
// need assert
void syncNodeVoteForTerm(SSyncNode* pSyncNode, SyncTerm term, SRaftId* pRaftId) {
ASSERT(term == pSyncNode->pRaftStore->currentTerm);
ASSERT(!raftStoreHasVoted(pSyncNode->pRaftStore));
raftStoreVote(pSyncNode->pRaftStore, pRaftId);
}
// simulate get vote from outside
void syncNodeVoteForSelf(SSyncNode* pSyncNode) {
syncNodeVoteForTerm(pSyncNode, pSyncNode->pRaftStore->currentTerm, &(pSyncNode->myRaftId));
SyncRequestVoteReply* pMsg = syncRequestVoteReplyBuild(pSyncNode->vgId);
pMsg->srcId = pSyncNode->myRaftId;
pMsg->destId = pSyncNode->myRaftId;
pMsg->term = pSyncNode->pRaftStore->currentTerm;
pMsg->voteGranted = true;
voteGrantedVote(pSyncNode->pVotesGranted, pMsg);
votesRespondAdd(pSyncNode->pVotesRespond, pMsg);
syncRequestVoteReplyDestroy(pMsg);
}
// snapshot --------------
// return if has a snapshot
bool syncNodeHasSnapshot(SSyncNode* pSyncNode) {
bool ret = false;
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0, .lastConfigIndex = -1};
if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
if (snapshot.lastApplyIndex >= SYNC_INDEX_BEGIN) {
ret = true;
}
}
return ret;
}
// return max(logLastIndex, snapshotLastIndex)
// if no snapshot and log, return -1
SyncIndex syncNodeGetLastIndex(const SSyncNode* pSyncNode) {
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0, .lastConfigIndex = -1};
if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
}
SyncIndex logLastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
SyncIndex lastIndex = logLastIndex > snapshot.lastApplyIndex ? logLastIndex : snapshot.lastApplyIndex;
return lastIndex;
}
// return the last term of snapshot and log
// if error, return SYNC_TERM_INVALID (by syncLogLastTerm)
SyncTerm syncNodeGetLastTerm(SSyncNode* pSyncNode) {
SyncTerm lastTerm = 0;
if (syncNodeHasSnapshot(pSyncNode)) {
// has snapshot
SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0, .lastConfigIndex = -1};
if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
}
SyncIndex logLastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
if (logLastIndex > snapshot.lastApplyIndex) {
lastTerm = pSyncNode->pLogStore->syncLogLastTerm(pSyncNode->pLogStore);
} else {
lastTerm = snapshot.lastApplyTerm;
}
} else {
// no snapshot
lastTerm = pSyncNode->pLogStore->syncLogLastTerm(pSyncNode->pLogStore);
}
return lastTerm;
}
// get last index and term along with snapshot
int32_t syncNodeGetLastIndexTerm(SSyncNode* pSyncNode, SyncIndex* pLastIndex, SyncTerm* pLastTerm) {
*pLastIndex = syncNodeGetLastIndex(pSyncNode);
*pLastTerm = syncNodeGetLastTerm(pSyncNode);
return 0;
}
// return append-entries first try index
SyncIndex syncNodeSyncStartIndex(SSyncNode* pSyncNode) {
SyncIndex syncStartIndex = syncNodeGetLastIndex(pSyncNode) + 1;
return syncStartIndex;
}
// if index > 0, return index - 1
// else, return -1
SyncIndex syncNodeGetPreIndex(SSyncNode* pSyncNode, SyncIndex index) {
SyncIndex preIndex = index - 1;
if (preIndex < SYNC_INDEX_INVALID) {
preIndex = SYNC_INDEX_INVALID;
}
return preIndex;
}
// if index < 0, return SYNC_TERM_INVALID
// if index == 0, return 0
// if index > 0, return preTerm
// if error, return SYNC_TERM_INVALID
SyncTerm syncNodeGetPreTerm(SSyncNode* pSyncNode, SyncIndex index) {
if (index < SYNC_INDEX_BEGIN) {
return SYNC_TERM_INVALID;
}
if (index == SYNC_INDEX_BEGIN) {
return 0;
}
SyncTerm preTerm = 0;
SyncIndex preIndex = index - 1;
SSyncRaftEntry* pPreEntry = NULL;
int32_t code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, preIndex, &pPreEntry);
SSnapshot snapshot = {.data = NULL,
.lastApplyIndex = SYNC_INDEX_INVALID,
.lastApplyTerm = SYNC_TERM_INVALID,
.lastConfigIndex = SYNC_INDEX_INVALID};
if (code == 0) {
ASSERT(pPreEntry != NULL);
preTerm = pPreEntry->term;
taosMemoryFree(pPreEntry);
return preTerm;
} else {
if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
pSyncNode->pFsm->FpGetSnapshotInfo(pSyncNode->pFsm, &snapshot);
if (snapshot.lastApplyIndex == preIndex) {
return snapshot.lastApplyTerm;
}
}
}
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf),
"sync node get pre term error, index:%" PRId64 ", snap-index:%" PRId64 ", snap-term:%" PRIu64, index,
snapshot.lastApplyIndex, snapshot.lastApplyTerm);
syncNodeErrorLog(pSyncNode, logBuf);
} while (0);
return SYNC_TERM_INVALID;
}
// get pre index and term of "index"
int32_t syncNodeGetPreIndexTerm(SSyncNode* pSyncNode, SyncIndex index, SyncIndex* pPreIndex, SyncTerm* pPreTerm) {
*pPreIndex = syncNodeGetPreIndex(pSyncNode, index);
*pPreTerm = syncNodeGetPreTerm(pSyncNode, index);
return 0;
}
// for debug --------------
void syncNodePrint(SSyncNode* pObj) {
char* serialized = syncNode2Str(pObj);
printf("syncNodePrint | len:%" PRIu64 " | %s \n", strlen(serialized), serialized);
fflush(NULL);
taosMemoryFree(serialized);
}
void syncNodePrint2(char* s, SSyncNode* pObj) {
char* serialized = syncNode2Str(pObj);
printf("syncNodePrint2 | len:%" PRIu64 " | %s | %s \n", strlen(serialized), s, serialized);
fflush(NULL);
taosMemoryFree(serialized);
}
void syncNodeLog(SSyncNode* pObj) {
char* serialized = syncNode2Str(pObj);
sTraceLong("syncNodeLog | len:%" PRIu64 " | %s", strlen(serialized), serialized);
taosMemoryFree(serialized);
}
void syncNodeLog2(char* s, SSyncNode* pObj) {
if (gRaftDetailLog) {
char* serialized = syncNode2Str(pObj);
sTraceLong("syncNodeLog2 | len:%" PRIu64 " | %s | %s", strlen(serialized), s, serialized);
taosMemoryFree(serialized);
}
}
void syncNodeLog3(char* s, SSyncNode* pObj) {
char* serialized = syncNode2Str(pObj);
sTraceLong("syncNodeLog3 | len:%" PRIu64 " | %s | %s", strlen(serialized), s, serialized);
taosMemoryFree(serialized);
}
// ------ local funciton ---------
// enqueue message ----
static void syncNodeEqPingTimer(void* param, void* tmrId) {
SSyncNode* pSyncNode = (SSyncNode*)param;
if (atomic_load_64(&pSyncNode->pingTimerLogicClockUser) <= atomic_load_64(&pSyncNode->pingTimerLogicClock)) {
SyncTimeout* pSyncMsg = syncTimeoutBuild2(SYNC_TIMEOUT_PING, atomic_load_64(&pSyncNode->pingTimerLogicClock),
pSyncNode->pingTimerMS, pSyncNode->vgId, pSyncNode);
SRpcMsg rpcMsg;
syncTimeout2RpcMsg(pSyncMsg, &rpcMsg);
syncRpcMsgLog2((char*)"==syncNodeEqPingTimer==", &rpcMsg);
if (pSyncNode->FpEqMsg != NULL) {
int32_t code = pSyncNode->FpEqMsg(pSyncNode->msgcb, &rpcMsg);
if (code != 0) {
sError("vgId:%d, sync enqueue ping msg error, code:%d", pSyncNode->vgId, code);
rpcFreeCont(rpcMsg.pCont);
syncTimeoutDestroy(pSyncMsg);
return;
}
} else {
sTrace("syncNodeEqPingTimer pSyncNode->FpEqMsg is NULL");
}
syncTimeoutDestroy(pSyncMsg);
if (syncEnvIsStart()) {
taosTmrReset(syncNodeEqPingTimer, pSyncNode->pingTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pPingTimer);
} else {
sError("sync env is stop, syncNodeEqPingTimer");
}
} else {
sTrace("==syncNodeEqPingTimer== pingTimerLogicClock:%" PRIu64 ", pingTimerLogicClockUser:%" PRIu64,
pSyncNode->pingTimerLogicClock, pSyncNode->pingTimerLogicClockUser);
}
}
static void syncNodeEqElectTimer(void* param, void* tmrId) {
SSyncNode* pSyncNode = (SSyncNode*)param;
if (atomic_load_64(&pSyncNode->electTimerLogicClockUser) <= atomic_load_64(&pSyncNode->electTimerLogicClock)) {
SyncTimeout* pSyncMsg = syncTimeoutBuild2(SYNC_TIMEOUT_ELECTION, atomic_load_64(&pSyncNode->electTimerLogicClock),
pSyncNode->electTimerMS, pSyncNode->vgId, pSyncNode);
SRpcMsg rpcMsg;
syncTimeout2RpcMsg(pSyncMsg, &rpcMsg);
syncRpcMsgLog2((char*)"==syncNodeEqElectTimer==", &rpcMsg);
if (pSyncNode->FpEqMsg != NULL) {
int32_t code = pSyncNode->FpEqMsg(pSyncNode->msgcb, &rpcMsg);
if (code != 0) {
sError("vgId:%d, sync enqueue elect msg error, code:%d", pSyncNode->vgId, code);
rpcFreeCont(rpcMsg.pCont);
syncTimeoutDestroy(pSyncMsg);
return;
}
} else {
sTrace("syncNodeEqElectTimer FpEqMsg is NULL");
}
syncTimeoutDestroy(pSyncMsg);
// reset timer ms
if (syncEnvIsStart()) {
pSyncNode->electTimerMS = syncUtilElectRandomMS(pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine);
taosTmrReset(syncNodeEqElectTimer, pSyncNode->electTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pElectTimer);
} else {
sError("sync env is stop, syncNodeEqElectTimer");
}
} else {
sTrace("==syncNodeEqElectTimer== electTimerLogicClock:%" PRIu64 ", electTimerLogicClockUser:%" PRIu64,
pSyncNode->electTimerLogicClock, pSyncNode->electTimerLogicClockUser);
}
}
static void syncNodeEqHeartbeatTimer(void* param, void* tmrId) {
SSyncNode* pSyncNode = (SSyncNode*)param;
syncNodeEventLog(pSyncNode, "eq hb timer");
if (pSyncNode->replicaNum > 1) {
if (atomic_load_64(&pSyncNode->heartbeatTimerLogicClockUser) <=
atomic_load_64(&pSyncNode->heartbeatTimerLogicClock)) {
SyncTimeout* pSyncMsg =
syncTimeoutBuild2(SYNC_TIMEOUT_HEARTBEAT, atomic_load_64(&pSyncNode->heartbeatTimerLogicClock),
pSyncNode->heartbeatTimerMS, pSyncNode->vgId, pSyncNode);
SRpcMsg rpcMsg;
syncTimeout2RpcMsg(pSyncMsg, &rpcMsg);
syncRpcMsgLog2((char*)"==syncNodeEqHeartbeatTimer==", &rpcMsg);
if (pSyncNode->FpEqMsg != NULL) {
int32_t code = pSyncNode->FpEqMsg(pSyncNode->msgcb, &rpcMsg);
if (code != 0) {
sError("vgId:%d, sync enqueue timer msg error, code:%d", pSyncNode->vgId, code);
rpcFreeCont(rpcMsg.pCont);
syncTimeoutDestroy(pSyncMsg);
return;
}
} else {
sError("vgId:%d, enqueue msg cb ptr (i.e. FpEqMsg) not set.", pSyncNode->vgId);
}
syncTimeoutDestroy(pSyncMsg);
if (syncEnvIsStart()) {
taosTmrReset(syncNodeEqHeartbeatTimer, pSyncNode->heartbeatTimerMS, pSyncNode, gSyncEnv->pTimerManager,
&pSyncNode->pHeartbeatTimer);
} else {
sError("sync env is stop, syncNodeEqHeartbeatTimer");
}
} else {
sTrace("==syncNodeEqHeartbeatTimer== heartbeatTimerLogicClock:%" PRIu64 ", heartbeatTimerLogicClockUser:%" PRIu64
"",
pSyncNode->heartbeatTimerLogicClock, pSyncNode->heartbeatTimerLogicClockUser);
}
}
}
static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId) {
SSyncHbTimerData* pData = (SSyncHbTimerData*)param;
SSyncNode* pSyncNode = pData->pSyncNode;
SSyncTimer* pSyncTimer = pData->pTimer;
syncNodeEventLog(pSyncNode, "eq peer hb timer");
int64_t timerLogicClock = atomic_load_64(&pSyncTimer->logicClock);
int64_t msgLogicClock = atomic_load_64(&pData->logicClock);
if (pSyncNode->replicaNum > 1) {
if (timerLogicClock == msgLogicClock) {
SyncHeartbeat* pSyncMsg = syncHeartbeatBuild(pSyncNode->vgId);
pSyncMsg->srcId = pSyncNode->myRaftId;
pSyncMsg->destId = pData->destId;
pSyncMsg->term = pSyncNode->pRaftStore->currentTerm;
pSyncMsg->commitIndex = pSyncNode->commitIndex;
pSyncMsg->privateTerm = 0;
SRpcMsg rpcMsg;
syncHeartbeat2RpcMsg(pSyncMsg, &rpcMsg);
// eq msg
#if 0
if (pSyncNode->FpEqCtrlMsg != NULL) {
int32_t code = pSyncNode->FpEqCtrlMsg(pSyncNode->msgcb, &rpcMsg);
if (code != 0) {
sError("vgId:%d, sync ctrl enqueue timer msg error, code:%d", pSyncNode->vgId, code);
rpcFreeCont(rpcMsg.pCont);
syncHeartbeatDestroy(pSyncMsg);
return;
}
} else {
sError("vgId:%d, enqueue ctrl msg cb ptr (i.e. FpEqMsg) not set.", pSyncNode->vgId);
}
#endif
// send msg
syncNodeHeartbeat(pSyncNode, &(pSyncMsg->destId), pSyncMsg);
syncHeartbeatDestroy(pSyncMsg);
if (syncEnvIsStart()) {
taosTmrReset(syncNodeEqPeerHeartbeatTimer, pSyncTimer->timerMS, pData, gSyncEnv->pTimerManager,
&pSyncTimer->pTimer);
} else {
sError("sync env is stop, syncNodeEqHeartbeatTimer");
}
} else {
sTrace("==syncNodeEqPeerHeartbeatTimer== timerLogicClock:%" PRIu64 ", msgLogicClock:%" PRIu64 "", timerLogicClock,
msgLogicClock);
}
}
}
static int32_t syncNodeEqNoop(SSyncNode* ths) {
int32_t ret = 0;
ASSERT(ths->state == TAOS_SYNC_STATE_LEADER);
SyncIndex index = ths->pLogStore->syncLogWriteIndex(ths->pLogStore);
SyncTerm term = ths->pRaftStore->currentTerm;
SSyncRaftEntry* pEntry = syncEntryBuildNoop(term, index, ths->vgId);
ASSERT(pEntry != NULL);
uint32_t entryLen;
char* serialized = syncEntrySerialize(pEntry, &entryLen);
SyncClientRequest* pSyncMsg = syncClientRequestBuild(entryLen);
ASSERT(pSyncMsg->dataLen == entryLen);
memcpy(pSyncMsg->data, serialized, entryLen);
SRpcMsg rpcMsg = {0};
syncClientRequest2RpcMsg(pSyncMsg, &rpcMsg);
if (ths->FpEqMsg != NULL) {
ths->FpEqMsg(ths->msgcb, &rpcMsg);
} else {
sTrace("syncNodeEqNoop pSyncNode->FpEqMsg is NULL");
}
taosMemoryFree(serialized);
syncClientRequestDestroy(pSyncMsg);
return ret;
}
static void deleteCacheEntry(const void* key, size_t keyLen, void* value) { taosMemoryFree(value); }
static int32_t syncCacheEntry(SSyncLogStore* pLogStore, SSyncRaftEntry* pEntry, LRUHandle** h) {
int code = 0;
int entryLen = sizeof(*pEntry) + pEntry->dataLen;
LRUStatus status = taosLRUCacheInsert(pLogStore->pCache, &pEntry->index, sizeof(pEntry->index), pEntry, entryLen,
deleteCacheEntry, h, TAOS_LRU_PRIORITY_LOW);
if (status != TAOS_LRU_STATUS_OK) {
code = -1;
}
return code;
}
static int32_t syncNodeAppendNoop(SSyncNode* ths) {
int32_t ret = 0;
SyncIndex index = ths->pLogStore->syncLogWriteIndex(ths->pLogStore);
SyncTerm term = ths->pRaftStore->currentTerm;
SSyncRaftEntry* pEntry = syncEntryBuildNoop(term, index, ths->vgId);
ASSERT(pEntry != NULL);
LRUHandle* h = NULL;
syncCacheEntry(ths->pLogStore, pEntry, &h);
if (ths->state == TAOS_SYNC_STATE_LEADER) {
int32_t code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pEntry);
ASSERT(code == 0);
syncNodeReplicate(ths, false);
}
if (h) {
taosLRUCacheRelease(ths->pLogStore->pCache, h, false);
} else {
syncEntryDestory(pEntry);
}
return ret;
}
// on message ----
int32_t syncNodeOnPingCb(SSyncNode* ths, SyncPing* pMsg) {
// log state
char logBuf[1024] = {0};
snprintf(logBuf, sizeof(logBuf),
"==syncNodeOnPingCb== vgId:%d, state: %d, %s, term:%" PRIu64 " electTimerLogicClock:%" PRIu64
", "
"electTimerLogicClockUser:%" PRIu64 ", electTimerMS:%d",
ths->vgId, ths->state, syncUtilState2String(ths->state), ths->pRaftStore->currentTerm,
ths->electTimerLogicClock, ths->electTimerLogicClockUser, ths->electTimerMS);
int32_t ret = 0;
syncPingLog2(logBuf, pMsg);
SyncPingReply* pMsgReply = syncPingReplyBuild3(&ths->myRaftId, &pMsg->srcId, ths->vgId);
SRpcMsg rpcMsg;
syncPingReply2RpcMsg(pMsgReply, &rpcMsg);
/*
// htonl
SMsgHead* pHead = rpcMsg.pCont;
pHead->contLen = htonl(pHead->contLen);
pHead->vgId = htonl(pHead->vgId);
*/
syncNodeSendMsgById(&pMsgReply->destId, ths, &rpcMsg);
return ret;
}
int32_t syncNodeOnPingReplyCb(SSyncNode* ths, SyncPingReply* pMsg) {
int32_t ret = 0;
syncPingReplyLog2("==syncNodeOnPingReplyCb==", pMsg);
return ret;
}
int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg) {
syncLogRecvHeartbeat(ths, pMsg, "");
SyncHeartbeatReply* pMsgReply = syncHeartbeatReplyBuild(ths->vgId);
pMsgReply->destId = pMsg->srcId;
pMsgReply->srcId = ths->myRaftId;
pMsgReply->term = ths->pRaftStore->currentTerm;
pMsgReply->privateTerm = 8864; // magic number
SRpcMsg rpcMsg;
syncHeartbeatReply2RpcMsg(pMsgReply, &rpcMsg);
if (pMsg->term >= ths->pRaftStore->currentTerm && ths->state != TAOS_SYNC_STATE_FOLLOWER) {
syncNodeBecomeFollower(ths, "become follower by hb");
}
if (pMsg->term == ths->pRaftStore->currentTerm) {
// sInfo("vgId:%d, heartbeat reset timer", ths->vgId);
syncNodeResetElectTimer(ths);
if (ths->state == TAOS_SYNC_STATE_FOLLOWER) {
syncNodeFollowerCommit(ths, pMsg->commitIndex);
}
}
/*
// htonl
SMsgHead* pHead = rpcMsg.pCont;
pHead->contLen = htonl(pHead->contLen);
pHead->vgId = htonl(pHead->vgId);
*/
// reply
syncNodeSendMsgById(&pMsgReply->destId, ths, &rpcMsg);
return 0;
}
int32_t syncNodeOnHeartbeatReply(SSyncNode* ths, SyncHeartbeatReply* pMsg) {
syncLogRecvHeartbeatReply(ths, pMsg, "");
// update last reply time, make decision whether the other node is alive or not
syncIndexMgrSetRecvTime(ths->pMatchIndex, &(pMsg->destId), pMsg->startTime);
return 0;
}
// TLA+ Spec
// ClientRequest(i, v) ==
// /\ state[i] = Leader
// /\ LET entry == [term |-> currentTerm[i],
// value |-> v]
// newLog == Append(log[i], entry)
// IN log' = [log EXCEPT ![i] = newLog]
// /\ UNCHANGED <<messages, serverVars, candidateVars,
// leaderVars, commitIndex>>
//
int32_t syncNodeOnClientRequestCb(SSyncNode* ths, SyncClientRequest* pMsg, SyncIndex* pRetIndex) {
int32_t ret = 0;
int32_t code = 0;
syncClientRequestLog2("==syncNodeOnClientRequestCb==", pMsg);
SyncIndex index = ths->pLogStore->syncLogWriteIndex(ths->pLogStore);
SyncTerm term = ths->pRaftStore->currentTerm;
SSyncRaftEntry* pEntry = syncEntryBuild2((SyncClientRequest*)pMsg, term, index);
ASSERT(pEntry != NULL);
LRUHandle* h = NULL;
syncCacheEntry(ths->pLogStore, pEntry, &h);
if (ths->state == TAOS_SYNC_STATE_LEADER) {
// append entry
code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pEntry);
if (code != 0) {
// del resp mgr, call FpCommitCb
ASSERT(0);
return -1;
}
// if mulit replica, start replicate right now
if (ths->replicaNum > 1) {
syncNodeReplicate(ths, false);
// pre commit
syncNodePreCommit(ths, pEntry, 0);
}
// if only myself, maybe commit right now
if (ths->replicaNum == 1) {
syncMaybeAdvanceCommitIndex(ths);
}
}
if (pRetIndex != NULL) {
if (ret == 0 && pEntry != NULL) {
*pRetIndex = pEntry->index;
} else {
*pRetIndex = SYNC_INDEX_INVALID;
}
}
if (h) {
taosLRUCacheRelease(ths->pLogStore->pCache, h, false);
} else {
syncEntryDestory(pEntry);
}
return ret;
}
int32_t syncNodeOnClientRequest(SSyncNode* ths, SyncClientRequest* pMsg, SyncIndex* pRetIndex) {
syncNodeEventLog(ths, "on client request");
int32_t ret = 0;
int32_t code = 0;
SyncIndex index = ths->pLogStore->syncLogWriteIndex(ths->pLogStore);
SyncTerm term = ths->pRaftStore->currentTerm;
SSyncRaftEntry* pEntry = syncEntryBuild2((SyncClientRequest*)pMsg, term, index);
ASSERT(pEntry != NULL);
LRUHandle* h = NULL;
syncCacheEntry(ths->pLogStore, pEntry, &h);
if (ths->state == TAOS_SYNC_STATE_LEADER) {
// append entry
code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pEntry);
if (code != 0) {
// del resp mgr, call FpCommitCb
ASSERT(0);
return -1;
}
// if mulit replica, start replicate right now
if (ths->replicaNum > 1) {
syncNodeDoReplicate(ths);
}
// if only myself, maybe commit right now
if (ths->replicaNum == 1) {
syncMaybeAdvanceCommitIndex(ths);
}
}
if (pRetIndex != NULL) {
if (ret == 0 && pEntry != NULL) {
*pRetIndex = pEntry->index;
} else {
*pRetIndex = SYNC_INDEX_INVALID;
}
}
if (h) {
taosLRUCacheRelease(ths->pLogStore->pCache, h, false);
} else {
syncEntryDestory(pEntry);
}
return ret;
}
int32_t syncNodeOnClientRequestBatchCb(SSyncNode* ths, SyncClientRequestBatch* pMsg) {
syncNodeEventLog(ths, "on client request batch");
int32_t code = 0;
if (ths->state != TAOS_SYNC_STATE_LEADER) {
// call FpCommitCb, delete resp mgr
return -1;
}
SyncIndex index = ths->pLogStore->syncLogWriteIndex(ths->pLogStore);
SyncTerm term = ths->pRaftStore->currentTerm;
int32_t raftMetaArrayLen = sizeof(SRaftMeta) * pMsg->dataCount;
int32_t rpcArrayLen = sizeof(SRpcMsg) * pMsg->dataCount;
SRaftMeta* raftMetaArr = (SRaftMeta*)(pMsg->data);
SRpcMsg* msgArr = (SRpcMsg*)((char*)(pMsg->data) + raftMetaArrayLen);
for (int32_t i = 0; i < pMsg->dataCount; ++i) {
SSyncRaftEntry* pEntry = syncEntryBuild(msgArr[i].contLen);
ASSERT(pEntry != NULL);
pEntry->originalRpcType = msgArr[i].msgType;
pEntry->seqNum = raftMetaArr[i].seqNum;
pEntry->isWeak = raftMetaArr[i].isWeak;
pEntry->term = term;
pEntry->index = index;
memcpy(pEntry->data, msgArr[i].pCont, msgArr[i].contLen);
ASSERT(msgArr[i].contLen == pEntry->dataLen);
code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pEntry);
if (code != 0) {
// del resp mgr, call FpCommitCb
ASSERT(0);
return -1;
}
// update rpc msg conn apply.index
msgArr[i].info.conn.applyIndex = pEntry->index;
}
// fsync once
SSyncLogStoreData* pData = ths->pLogStore->data;
SWal* pWal = pData->pWal;
walFsync(pWal, false);
if (ths->replicaNum > 1) {
// if multi replica, start replicate right now
syncNodeReplicate(ths, false);
} else if (ths->replicaNum == 1) {
// one replica
syncMaybeAdvanceCommitIndex(ths);
}
return 0;
}
const char* syncStr(ESyncState state) {
switch (state) {
case TAOS_SYNC_STATE_FOLLOWER:
return "follower";
case TAOS_SYNC_STATE_CANDIDATE:
return "candidate";
case TAOS_SYNC_STATE_LEADER:
return "leader";
default:
return "error";
}
}
int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* pEntry) {
if (ths->state != TAOS_SYNC_STATE_FOLLOWER) {
syncNodeEventLog(ths, "I am not follower, can not do leader transfer");
return 0;
}
if (!ths->restoreFinish) {
syncNodeEventLog(ths, "restore not finish, can not do leader transfer");
return 0;
}
if (pEntry->term < ths->pRaftStore->currentTerm) {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "little term:%lu, can not do leader transfer", pEntry->term);
syncNodeEventLog(ths, logBuf);
return 0;
}
if (pEntry->index < syncNodeGetLastIndex(ths)) {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "little index:%ld, can not do leader transfer", pEntry->index);
syncNodeEventLog(ths, logBuf);
return 0;
}
/*
if (ths->vgId > 1) {
syncNodeEventLog(ths, "I am vnode, can not do leader transfer");
return 0;
}
*/
SyncLeaderTransfer* pSyncLeaderTransfer = syncLeaderTransferFromRpcMsg2(pRpcMsg);
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "do leader transfer, index:%ld", pEntry->index);
syncNodeEventLog(ths, logBuf);
} while (0);
bool sameId = syncUtilSameId(&(pSyncLeaderTransfer->newLeaderId), &(ths->myRaftId));
bool sameNodeInfo = strcmp(pSyncLeaderTransfer->newNodeInfo.nodeFqdn, ths->myNodeInfo.nodeFqdn) == 0 &&
pSyncLeaderTransfer->newNodeInfo.nodePort == ths->myNodeInfo.nodePort;
bool same = sameId || sameNodeInfo;
if (same) {
// reset elect timer now!
int32_t electMS = 1;
int32_t ret = syncNodeRestartElectTimer(ths, electMS);
ASSERT(ret == 0);
char eventLog[256];
snprintf(eventLog, sizeof(eventLog), "maybe leader transfer to %s:%d %" PRIu64,
pSyncLeaderTransfer->newNodeInfo.nodeFqdn, pSyncLeaderTransfer->newNodeInfo.nodePort,
pSyncLeaderTransfer->newLeaderId.addr);
syncNodeEventLog(ths, eventLog);
}
if (ths->pFsm->FpLeaderTransferCb != NULL) {
SFsmCbMeta cbMeta = {0};
cbMeta.code = 0;
cbMeta.currentTerm = ths->pRaftStore->currentTerm;
cbMeta.flag = 0;
cbMeta.index = pEntry->index;
cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, cbMeta.index);
cbMeta.isWeak = pEntry->isWeak;
cbMeta.seqNum = pEntry->seqNum;
cbMeta.state = ths->state;
cbMeta.term = pEntry->term;
ths->pFsm->FpLeaderTransferCb(ths->pFsm, pRpcMsg, cbMeta);
}
syncLeaderTransferDestroy(pSyncLeaderTransfer);
return 0;
}
int32_t syncNodeUpdateNewConfigIndex(SSyncNode* ths, SSyncCfg* pNewCfg) {
for (int i = 0; i < pNewCfg->replicaNum; ++i) {
SRaftId raftId;
raftId.addr = syncUtilAddr2U64((pNewCfg->nodeInfo)[i].nodeFqdn, (pNewCfg->nodeInfo)[i].nodePort);
raftId.vgId = ths->vgId;
if (syncUtilSameId(&(ths->myRaftId), &raftId)) {
pNewCfg->myIndex = i;
return 0;
}
}
return -1;
}
static int32_t syncNodeConfigChangeFinish(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* pEntry) {
SyncReconfigFinish* pFinish = syncReconfigFinishFromRpcMsg2(pRpcMsg);
ASSERT(pFinish);
if (ths->pFsm->FpReConfigCb != NULL) {
SReConfigCbMeta cbMeta = {0};
cbMeta.code = 0;
cbMeta.index = pEntry->index;
cbMeta.term = pEntry->term;
cbMeta.seqNum = pEntry->seqNum;
cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, pEntry->index);
cbMeta.state = ths->state;
cbMeta.currentTerm = ths->pRaftStore->currentTerm;
cbMeta.isWeak = pEntry->isWeak;
cbMeta.flag = 0;
cbMeta.oldCfg = pFinish->oldCfg;
cbMeta.newCfg = pFinish->newCfg;
cbMeta.newCfgIndex = pFinish->newCfgIndex;
cbMeta.newCfgTerm = pFinish->newCfgTerm;
cbMeta.newCfgSeqNum = pFinish->newCfgSeqNum;
ths->pFsm->FpReConfigCb(ths->pFsm, pRpcMsg, &cbMeta);
}
// clear changing
ths->changing = false;
char tmpbuf[512];
char* oldStr = syncCfg2SimpleStr(&(pFinish->oldCfg));
char* newStr = syncCfg2SimpleStr(&(pFinish->newCfg));
snprintf(tmpbuf, sizeof(tmpbuf), "config change finish from %d to %d, index:%" PRId64 ", %s --> %s",
pFinish->oldCfg.replicaNum, pFinish->newCfg.replicaNum, pFinish->newCfgIndex, oldStr, newStr);
taosMemoryFree(oldStr);
taosMemoryFree(newStr);
syncNodeEventLog(ths, tmpbuf);
syncReconfigFinishDestroy(pFinish);
return 0;
}
static int32_t syncNodeConfigChange(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* pEntry,
SyncReconfigFinish* pFinish) {
// set changing
ths->changing = true;
// old config
SSyncCfg oldSyncCfg = ths->pRaftCfg->cfg;
// new config
SSyncCfg newSyncCfg;
int32_t ret = syncCfgFromStr(pRpcMsg->pCont, &newSyncCfg);
ASSERT(ret == 0);
// update new config myIndex
syncNodeUpdateNewConfigIndex(ths, &newSyncCfg);
// do config change
syncNodeDoConfigChange(ths, &newSyncCfg, pEntry->index);
// set pFinish
pFinish->oldCfg = oldSyncCfg;
pFinish->newCfg = newSyncCfg;
pFinish->newCfgIndex = pEntry->index;
pFinish->newCfgTerm = pEntry->term;
pFinish->newCfgSeqNum = pEntry->seqNum;
return 0;
}
static int32_t syncNodeProposeConfigChangeFinish(SSyncNode* ths, SyncReconfigFinish* pFinish) {
SRpcMsg rpcMsg;
syncReconfigFinish2RpcMsg(pFinish, &rpcMsg);
int32_t code = syncNodePropose(ths, &rpcMsg, false);
if (code != 0) {
sError("syncNodeProposeConfigChangeFinish error");
ths->changing = false;
}
return 0;
}
bool syncNodeIsOptimizedOneReplica(SSyncNode* ths, SRpcMsg* pMsg) {
return (ths->replicaNum == 1 && syncUtilUserCommit(pMsg->msgType) && ths->vgId != 1);
}
int32_t syncNodeCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endIndex, uint64_t flag) {
if (beginIndex > endIndex) {
return 0;
}
// advance commit index to sanpshot first
SSnapshot snapshot = {0};
ths->pFsm->FpGetSnapshotInfo(ths->pFsm, &snapshot);
if (snapshot.lastApplyIndex >= 0 && snapshot.lastApplyIndex >= beginIndex) {
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "commit by snapshot from index:%" PRId64 " to index:%" PRId64, beginIndex,
snapshot.lastApplyIndex);
syncNodeEventLog(ths, eventLog);
// update begin index
beginIndex = snapshot.lastApplyIndex + 1;
}
int32_t code = 0;
ESyncState state = flag;
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "commit by wal from index:%" PRId64 " to index:%" PRId64, beginIndex, endIndex);
syncNodeEventLog(ths, eventLog);
// execute fsm
if (ths->pFsm != NULL) {
for (SyncIndex i = beginIndex; i <= endIndex; ++i) {
if (i != SYNC_INDEX_INVALID) {
SSyncRaftEntry* pEntry;
SLRUCache* pCache = ths->pLogStore->pCache;
LRUHandle* h = taosLRUCacheLookup(pCache, &i, sizeof(i));
if (h) {
pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
} else {
code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, i, &pEntry);
ASSERT(code == 0);
ASSERT(pEntry != NULL);
}
SRpcMsg rpcMsg;
syncEntry2OriginalRpc(pEntry, &rpcMsg);
// user commit
if ((ths->pFsm->FpCommitCb != NULL) && syncUtilUserCommit(pEntry->originalRpcType)) {
bool internalExecute = true;
if ((ths->replicaNum == 1) && ths->restoreFinish && ths->vgId != 1) {
internalExecute = false;
}
do {
char logBuf[128];
snprintf(logBuf, sizeof(logBuf), "commit index:%" PRId64 ", internal:%d", i, internalExecute);
syncNodeEventLog(ths, logBuf);
} while (0);
// execute fsm in apply thread, or execute outside syncPropose
if (internalExecute) {
SFsmCbMeta cbMeta = {0};
cbMeta.index = pEntry->index;
cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, cbMeta.index);
cbMeta.isWeak = pEntry->isWeak;
cbMeta.code = 0;
cbMeta.state = ths->state;
cbMeta.seqNum = pEntry->seqNum;
cbMeta.term = pEntry->term;
cbMeta.currentTerm = ths->pRaftStore->currentTerm;
cbMeta.flag = flag;
ths->pFsm->FpCommitCb(ths->pFsm, &rpcMsg, cbMeta);
}
}
// config change
if (pEntry->originalRpcType == TDMT_SYNC_CONFIG_CHANGE) {
SyncReconfigFinish* pFinish = syncReconfigFinishBuild(ths->vgId);
ASSERT(pFinish != NULL);
code = syncNodeConfigChange(ths, &rpcMsg, pEntry, pFinish);
ASSERT(code == 0);
if (ths->state == TAOS_SYNC_STATE_LEADER) {
syncNodeProposeConfigChangeFinish(ths, pFinish);
}
syncReconfigFinishDestroy(pFinish);
}
// config change finish
if (pEntry->originalRpcType == TDMT_SYNC_CONFIG_CHANGE_FINISH) {
code = syncNodeConfigChangeFinish(ths, &rpcMsg, pEntry);
ASSERT(code == 0);
}
#if 0
// execute in pre-commit
// leader transfer
if (pEntry->originalRpcType == TDMT_SYNC_LEADER_TRANSFER) {
code = syncDoLeaderTransfer(ths, &rpcMsg, pEntry);
ASSERT(code == 0);
}
#endif
// restore finish
// if only snapshot, a noop entry will be append, so syncLogLastIndex is always ok
if (pEntry->index == ths->pLogStore->syncLogLastIndex(ths->pLogStore)) {
if (ths->restoreFinish == false) {
if (ths->pFsm->FpRestoreFinishCb != NULL) {
ths->pFsm->FpRestoreFinishCb(ths->pFsm);
}
ths->restoreFinish = true;
int64_t restoreDelay = taosGetTimestampMs() - ths->leaderTime;
char eventLog[128];
snprintf(eventLog, sizeof(eventLog), "restore finish, index:%ld, elapsed:%ld ms, ", pEntry->index,
restoreDelay);
syncNodeEventLog(ths, eventLog);
}
}
rpcFreeCont(rpcMsg.pCont);
if (h) {
taosLRUCacheRelease(pCache, h, false);
} else {
syncEntryDestory(pEntry);
}
}
}
}
return 0;
}
bool syncNodeInRaftGroup(SSyncNode* ths, SRaftId* pRaftId) {
for (int i = 0; i < ths->replicaNum; ++i) {
if (syncUtilSameId(&((ths->replicasId)[i]), pRaftId)) {
return true;
}
}
return false;
}
SSyncSnapshotSender* syncNodeGetSnapshotSender(SSyncNode* ths, SRaftId* pDestId) {
SSyncSnapshotSender* pSender = NULL;
for (int i = 0; i < ths->replicaNum; ++i) {
if (syncUtilSameId(pDestId, &((ths->replicasId)[i]))) {
pSender = (ths->senders)[i];
}
}
return pSender;
}
SSyncTimer* syncNodeGetHbTimer(SSyncNode* ths, SRaftId* pDestId) {
SSyncTimer* pTimer = NULL;
for (int i = 0; i < ths->replicaNum; ++i) {
if (syncUtilSameId(pDestId, &((ths->replicasId)[i]))) {
pTimer = &((ths->peerHeartbeatTimerArr)[i]);
}
}
return pTimer;
}
SPeerState* syncNodeGetPeerState(SSyncNode* ths, const SRaftId* pDestId) {
SPeerState* pState = NULL;
for (int i = 0; i < ths->replicaNum; ++i) {
if (syncUtilSameId(pDestId, &((ths->replicasId)[i]))) {
pState = &((ths->peerStates)[i]);
}
}
return pState;
}
bool syncNodeNeedSendAppendEntries(SSyncNode* ths, const SRaftId* pDestId, const SyncAppendEntries* pMsg) {
SPeerState* pState = syncNodeGetPeerState(ths, pDestId);
ASSERT(pState != NULL);
SyncIndex sendIndex = pMsg->prevLogIndex + 1;
int64_t tsNow = taosGetTimestampMs();
if (pState->lastSendIndex == sendIndex && tsNow - pState->lastSendTime < SYNC_APPEND_ENTRIES_TIMEOUT_MS) {
return false;
}
return true;
}
bool syncNodeCanChange(SSyncNode* pSyncNode) {
if (pSyncNode->changing) {
sError("sync cannot change");
return false;
}
if ((pSyncNode->commitIndex >= SYNC_INDEX_BEGIN)) {
SyncIndex lastIndex = syncNodeGetLastIndex(pSyncNode);
if (pSyncNode->commitIndex != lastIndex) {
sError("sync cannot change2");
return false;
}
}
for (int i = 0; i < pSyncNode->peersNum; ++i) {
SSyncSnapshotSender* pSender = syncNodeGetSnapshotSender(pSyncNode, &(pSyncNode->peersId)[i]);
if (pSender->start) {
sError("sync cannot change3");
return false;
}
}
return true;
}
void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"send sync-request-vote to %s:%d {term:%" PRIu64 ", lindex:%" PRId64 ", lterm:%" PRIu64 "}, %s", host, port,
pMsg->term, pMsg->lastLogIndex, pMsg->lastLogTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
char logBuf[256];
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
snprintf(logBuf, sizeof(logBuf),
"recv sync-request-vote from %s:%d, {term:%" PRIu64 ", lindex:%" PRId64 ", lterm:%" PRIu64 "}, %s", host,
port, pMsg->term, pMsg->lastLogIndex, pMsg->lastLogTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf), "send sync-request-vote-reply to %s:%d {term:%" PRIu64 ", grant:%d}, %s", host, port,
pMsg->term, pMsg->voteGranted, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf), "recv sync-request-vote-reply from %s:%d {term:%" PRIu64 ", grant:%d}, %s", host,
port, pMsg->term, pMsg->voteGranted, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"send sync-append-entries to %s:%d, {term:%" PRIu64 ", pre-index:%" PRId64 ", pre-term:%" PRIu64
", pterm:%" PRIu64 ", cmt:%" PRId64
", "
"datalen:%d}, %s",
host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->privateTerm, pMsg->commitIndex,
pMsg->dataLen, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"recv sync-append-entries from %s:%d {term:%" PRIu64 ", pre-index:%" PRIu64 ", pre-term:%" PRIu64
", cmt:%" PRIu64 ", pterm:%" PRIu64
", "
"datalen:%d}, %s",
host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->commitIndex, pMsg->privateTerm,
pMsg->dataLen, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"send sync-append-entries-batch to %s:%d, {term:%" PRIu64 ", pre-index:%" PRId64 ", pre-term:%" PRIu64
", pterm:%" PRIu64 ", cmt:%" PRId64 ", datalen:%d, count:%d}, %s",
host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->privateTerm, pMsg->commitIndex,
pMsg->dataLen, pMsg->dataCount, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"recv sync-append-entries-batch from %s:%d, {term:%" PRIu64 ", pre-index:%" PRId64 ", pre-term:%" PRIu64
", pterm:%" PRIu64 ", cmt:%" PRId64 ", datalen:%d, count:%d}, %s",
host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->privateTerm, pMsg->commitIndex,
pMsg->dataLen, pMsg->dataCount, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"send sync-append-entries-reply to %s:%d, {term:%" PRIu64 ", pterm:%" PRIu64 ", success:%d, match:%" PRId64
"}, %s",
host, port, pMsg->term, pMsg->privateTerm, pMsg->success, pMsg->matchIndex, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"recv sync-append-entries-reply from %s:%d {term:%" PRIu64 ", pterm:%" PRIu64 ", success:%d, match:%" PRId64
"}, %s",
host, port, pMsg->term, pMsg->privateTerm, pMsg->success, pMsg->matchIndex, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendHeartbeat(SSyncNode* pSyncNode, const SyncHeartbeat* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"send sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRIu64 ", pterm:%" PRIu64 "}, %s", host, port,
pMsg->term, pMsg->commitIndex, pMsg->privateTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvHeartbeat(SSyncNode* pSyncNode, const SyncHeartbeat* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf),
"recv sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRIu64 ", pterm:%" PRIu64 "}, %s", host, port,
pMsg->term, pMsg->commitIndex, pMsg->privateTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogSendHeartbeatReply(SSyncNode* pSyncNode, const SyncHeartbeatReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf), "send sync-heartbeat-reply from %s:%d {term:%" PRIu64 ", pterm:%" PRIu64 "}, %s",
host, port, pMsg->term, pMsg->privateTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
void syncLogRecvHeartbeatReply(SSyncNode* pSyncNode, const SyncHeartbeatReply* pMsg, const char* s) {
char host[64];
uint16_t port;
syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
char logBuf[256];
snprintf(logBuf, sizeof(logBuf), "recv sync-heartbeat-reply from %s:%d {term:%" PRIu64 ", pterm:%" PRIu64 "}, %s",
host, port, pMsg->term, pMsg->privateTerm, s);
syncNodeEventLog(pSyncNode, logBuf);
}
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