268 lines
8.3 KiB
C
268 lines
8.3 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define _DEFAULT_SOURCE
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#include "mndSync.h"
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#include "mndTrans.h"
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int32_t mndSyncEqMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) {
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SMsgHead *pHead = pMsg->pCont;
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pHead->contLen = htonl(pHead->contLen);
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pHead->vgId = htonl(pHead->vgId);
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return tmsgPutToQueue(msgcb, SYNC_QUEUE, pMsg);
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}
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int32_t mndSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) { return tmsgSendReq(pEpSet, pMsg); }
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void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
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SMnode *pMnode = pFsm->data;
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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SSdbRaw *pRaw = pMsg->pCont;
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int32_t transId = sdbGetIdFromRaw(pMnode->pSdb, pRaw);
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pMgmt->errCode = cbMeta.code;
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mTrace("trans:%d, is proposed, savedTransId:%d code:0x%x, ver:%" PRId64 " term:%" PRId64 " role:%s raw:%p", transId,
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pMgmt->transId, cbMeta.code, cbMeta.index, cbMeta.term, syncStr(cbMeta.state), pRaw);
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if (pMgmt->errCode == 0) {
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sdbWriteWithoutFree(pMnode->pSdb, pRaw);
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sdbSetApplyIndex(pMnode->pSdb, cbMeta.index);
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sdbSetApplyTerm(pMnode->pSdb, cbMeta.term);
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}
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if (pMgmt->transId == transId) {
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if (pMgmt->errCode != 0) {
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mError("trans:%d, failed to propose since %s", transId, tstrerror(pMgmt->errCode));
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}
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tsem_post(&pMgmt->syncSem);
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} else {
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if (cbMeta.index - sdbGetApplyIndex(pMnode->pSdb) > 100) {
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sdbWriteFile(pMnode->pSdb);
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}
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}
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}
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int32_t mndSyncGetSnapshot(struct SSyncFSM *pFsm, SSnapshot *pSnapshot) {
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SMnode *pMnode = pFsm->data;
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pSnapshot->lastApplyIndex = sdbGetApplyIndex(pMnode->pSdb);
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pSnapshot->lastApplyTerm = sdbGetApplyTerm(pMnode->pSdb);
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return 0;
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}
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void mndRestoreFinish(struct SSyncFSM *pFsm) {
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SMnode *pMnode = pFsm->data;
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if (!pMnode->deploy) {
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mInfo("mnode sync restore finished");
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mndTransPullup(pMnode);
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mndSetRestore(pMnode, true);
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} else {
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mInfo("mnode sync restore finished, and will set ready after first deploy");
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}
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}
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void mndReConfig(struct SSyncFSM *pFsm, SSyncCfg newCfg, SReConfigCbMeta cbMeta) {
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SMnode *pMnode = pFsm->data;
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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pMgmt->errCode = cbMeta.code;
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mInfo("trans:-1, sync reconfig is proposed, savedTransId:%d code:0x%x, curTerm:%" PRId64 " term:%" PRId64,
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pMgmt->transId, cbMeta.code, cbMeta.index, cbMeta.term);
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if (pMgmt->transId == -1) {
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if (pMgmt->errCode != 0) {
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mError("trans:-1, failed to propose sync reconfig since %s", tstrerror(pMgmt->errCode));
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}
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tsem_post(&pMgmt->syncSem);
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}
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}
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int32_t mndSnapshotStartRead(struct SSyncFSM *pFsm, void **ppReader) {
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mInfo("start to read snapshot from sdb");
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SMnode *pMnode = pFsm->data;
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return sdbStartRead(pMnode->pSdb, (SSdbIter **)ppReader);
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}
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int32_t mndSnapshotStopRead(struct SSyncFSM *pFsm, void *pReader) {
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mInfo("stop to read snapshot from sdb");
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SMnode *pMnode = pFsm->data;
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return sdbStopRead(pMnode->pSdb, pReader);
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}
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int32_t mndSnapshotDoRead(struct SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
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SMnode *pMnode = pFsm->data;
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return sdbDoRead(pMnode->pSdb, pReader, ppBuf, len);
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}
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int32_t mndSnapshotStartWrite(struct SSyncFSM *pFsm, void **ppWriter) {
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mInfo("start to apply snapshot to sdb");
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SMnode *pMnode = pFsm->data;
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return sdbStartWrite(pMnode->pSdb, (SSdbIter **)ppWriter);
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}
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int32_t mndSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool isApply) {
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mInfo("stop to apply snapshot to sdb, apply:%d", isApply);
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SMnode *pMnode = pFsm->data;
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return sdbStopWrite(pMnode->pSdb, pWriter, isApply);
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}
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int32_t mndSnapshotDoWrite(struct SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
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SMnode *pMnode = pFsm->data;
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return sdbDoWrite(pMnode->pSdb, pWriter, pBuf, len);
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}
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SSyncFSM *mndSyncMakeFsm(SMnode *pMnode) {
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SSyncFSM *pFsm = taosMemoryCalloc(1, sizeof(SSyncFSM));
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pFsm->data = pMnode;
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pFsm->FpCommitCb = mndSyncCommitMsg;
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pFsm->FpPreCommitCb = NULL;
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pFsm->FpRollBackCb = NULL;
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pFsm->FpRestoreFinishCb = mndRestoreFinish;
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pFsm->FpReConfigCb = mndReConfig;
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pFsm->FpGetSnapshot = mndSyncGetSnapshot;
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pFsm->FpSnapshotStartRead = mndSnapshotStartRead;
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pFsm->FpSnapshotStopRead = mndSnapshotStopRead;
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pFsm->FpSnapshotDoRead = mndSnapshotDoRead;
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pFsm->FpSnapshotStartWrite = mndSnapshotStartWrite;
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pFsm->FpSnapshotStopWrite = mndSnapshotStopWrite;
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pFsm->FpSnapshotDoWrite = mndSnapshotDoWrite;
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return pFsm;
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}
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int32_t mndInitSync(SMnode *pMnode) {
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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char path[PATH_MAX + 20] = {0};
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snprintf(path, sizeof(path), "%s%swal", pMnode->path, TD_DIRSEP);
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SWalCfg cfg = {
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.vgId = 1,
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.fsyncPeriod = 0,
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.rollPeriod = -1,
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.segSize = -1,
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.retentionPeriod = -1,
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.retentionSize = -1,
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.level = TAOS_WAL_FSYNC,
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};
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pMgmt->pWal = walOpen(path, &cfg);
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if (pMgmt->pWal == NULL) {
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mError("failed to open wal since %s", terrstr());
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return -1;
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}
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SSyncInfo syncInfo = {.vgId = 1, .FpSendMsg = mndSyncSendMsg, .FpEqMsg = mndSyncEqMsg};
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snprintf(syncInfo.path, sizeof(syncInfo.path), "%s%ssync", pMnode->path, TD_DIRSEP);
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syncInfo.pWal = pMgmt->pWal;
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syncInfo.pFsm = mndSyncMakeFsm(pMnode);
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syncInfo.isStandBy = pMgmt->standby;
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SSyncCfg *pCfg = &syncInfo.syncCfg;
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pCfg->replicaNum = pMnode->replica;
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pCfg->myIndex = pMnode->selfIndex;
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mInfo("start to open mnode sync, replica:%d myindex:%d standby:%d", pCfg->replicaNum, pCfg->myIndex, pMgmt->standby);
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for (int32_t i = 0; i < pMnode->replica; ++i) {
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SNodeInfo *pNode = &pCfg->nodeInfo[i];
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tstrncpy(pNode->nodeFqdn, pMnode->replicas[i].fqdn, sizeof(pNode->nodeFqdn));
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pNode->nodePort = pMnode->replicas[i].port;
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mInfo("index:%d, fqdn:%s port:%d", i, pNode->nodeFqdn, pNode->nodePort);
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}
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tsem_init(&pMgmt->syncSem, 0, 0);
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pMgmt->sync = syncOpen(&syncInfo);
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if (pMgmt->sync <= 0) {
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mError("failed to open sync since %s", terrstr());
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return -1;
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}
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mDebug("mnode sync is opened, id:%" PRId64, pMgmt->sync);
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return 0;
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}
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void mndCleanupSync(SMnode *pMnode) {
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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syncStop(pMgmt->sync);
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mDebug("sync:%" PRId64 " is stopped", pMgmt->sync);
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tsem_destroy(&pMgmt->syncSem);
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if (pMgmt->pWal != NULL) {
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walClose(pMgmt->pWal);
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}
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memset(pMgmt, 0, sizeof(SSyncMgmt));
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}
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int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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SRpcMsg rsp = {.code = TDMT_MND_APPLY_MSG, .contLen = sdbGetRawTotalSize(pRaw)};
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rsp.pCont = rpcMallocCont(rsp.contLen);
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if (rsp.pCont == NULL) return -1;
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memcpy(rsp.pCont, pRaw, rsp.contLen);
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pMgmt->errCode = 0;
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pMgmt->transId = transId;
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mTrace("trans:%d, will be proposed", pMgmt->transId);
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const bool isWeak = false;
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int32_t code = syncPropose(pMgmt->sync, &rsp, isWeak);
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if (code == 0) {
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tsem_wait(&pMgmt->syncSem);
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} else if (code == TAOS_SYNC_PROPOSE_NOT_LEADER) {
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terrno = TSDB_CODE_APP_NOT_READY;
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} else if (code == TAOS_SYNC_PROPOSE_OTHER_ERROR) {
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terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
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} else {
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terrno = TSDB_CODE_APP_ERROR;
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}
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rpcFreeCont(rsp.pCont);
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if (code != 0) {
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mError("trans:%d, failed to propose, code:0x%x", pMgmt->transId, code);
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return code;
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}
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return pMgmt->errCode;
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}
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void mndSyncStart(SMnode *pMnode) {
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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syncSetMsgCb(pMgmt->sync, &pMnode->msgCb);
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if (pMgmt->standby) {
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syncStartStandBy(pMgmt->sync);
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} else {
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syncStart(pMgmt->sync);
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}
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mDebug("sync:%" PRId64 " is started, standby:%d", pMgmt->sync, pMgmt->standby);
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}
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void mndSyncStop(SMnode *pMnode) {}
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bool mndIsMaster(SMnode *pMnode) {
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SSyncMgmt *pMgmt = &pMnode->syncMgmt;
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ESyncState state = syncGetMyRole(pMgmt->sync);
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if (state != TAOS_SYNC_STATE_LEADER) {
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terrno = TSDB_CODE_SYN_NOT_LEADER;
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return false;
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}
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if (!pMnode->restored) {
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terrno = TSDB_CODE_APP_NOT_READY;
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return false;
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}
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return true;
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}
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