homework-jianmu/source/dnode/mnode/impl/src/mndDb.c

1615 lines
52 KiB
C

/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "mndDb.h"
#include "mndAuth.h"
#include "mndDnode.h"
#include "mndOffset.h"
#include "mndShow.h"
#include "mndSma.h"
#include "mndStb.h"
#include "mndSubscribe.h"
#include "mndTopic.h"
#include "mndTrans.h"
#include "mndUser.h"
#include "mndVgroup.h"
#include "systable.h"
#define DB_VER_NUMBER 1
#define DB_RESERVE_SIZE 64
static SSdbRaw *mndDbActionEncode(SDbObj *pDb);
static SSdbRow *mndDbActionDecode(SSdbRaw *pRaw);
static int32_t mndDbActionInsert(SSdb *pSdb, SDbObj *pDb);
static int32_t mndDbActionDelete(SSdb *pSdb, SDbObj *pDb);
static int32_t mndDbActionUpdate(SSdb *pSdb, SDbObj *pOld, SDbObj *pNew);
static int32_t mndProcessCreateDbReq(SRpcMsg *pReq);
static int32_t mndProcessAlterDbReq(SRpcMsg *pReq);
static int32_t mndProcessDropDbReq(SRpcMsg *pReq);
static int32_t mndProcessUseDbReq(SRpcMsg *pReq);
static int32_t mndProcessCompactDbReq(SRpcMsg *pReq);
static int32_t mndRetrieveDbs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rowsCapacity);
static void mndCancelGetNextDb(SMnode *pMnode, void *pIter);
static int32_t mndProcessGetDbCfgReq(SRpcMsg *pReq);
int32_t mndInitDb(SMnode *pMnode) {
SSdbTable table = {
.sdbType = SDB_DB,
.keyType = SDB_KEY_BINARY,
.encodeFp = (SdbEncodeFp)mndDbActionEncode,
.decodeFp = (SdbDecodeFp)mndDbActionDecode,
.insertFp = (SdbInsertFp)mndDbActionInsert,
.updateFp = (SdbUpdateFp)mndDbActionUpdate,
.deleteFp = (SdbDeleteFp)mndDbActionDelete,
};
mndSetMsgHandle(pMnode, TDMT_MND_CREATE_DB, mndProcessCreateDbReq);
mndSetMsgHandle(pMnode, TDMT_MND_ALTER_DB, mndProcessAlterDbReq);
mndSetMsgHandle(pMnode, TDMT_MND_DROP_DB, mndProcessDropDbReq);
mndSetMsgHandle(pMnode, TDMT_MND_USE_DB, mndProcessUseDbReq);
mndSetMsgHandle(pMnode, TDMT_MND_COMPACT_DB, mndProcessCompactDbReq);
mndSetMsgHandle(pMnode, TDMT_MND_GET_DB_CFG, mndProcessGetDbCfgReq);
mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_DB, mndRetrieveDbs);
mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_DB, mndCancelGetNextDb);
return sdbSetTable(pMnode->pSdb, table);
}
void mndCleanupDb(SMnode *pMnode) {}
static SSdbRaw *mndDbActionEncode(SDbObj *pDb) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
int32_t size = sizeof(SDbObj) + pDb->cfg.numOfRetensions * sizeof(SRetention) + DB_RESERVE_SIZE;
SSdbRaw *pRaw = sdbAllocRaw(SDB_DB, DB_VER_NUMBER, size);
if (pRaw == NULL) goto _OVER;
int32_t dataPos = 0;
SDB_SET_BINARY(pRaw, dataPos, pDb->name, TSDB_DB_FNAME_LEN, _OVER)
SDB_SET_BINARY(pRaw, dataPos, pDb->acct, TSDB_USER_LEN, _OVER)
SDB_SET_BINARY(pRaw, dataPos, pDb->createUser, TSDB_USER_LEN, _OVER)
SDB_SET_INT64(pRaw, dataPos, pDb->createdTime, _OVER)
SDB_SET_INT64(pRaw, dataPos, pDb->updateTime, _OVER)
SDB_SET_INT64(pRaw, dataPos, pDb->uid, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfgVersion, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->vgVersion, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.numOfVgroups, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.numOfStables, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.buffer, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.pageSize, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.pages, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysPerFile, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep0, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep1, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep2, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.minRows, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.maxRows, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.fsyncPeriod, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.walLevel, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.precision, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.compression, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.replications, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.strict, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.cacheLastRow, _OVER)
SDB_SET_INT8(pRaw, dataPos, pDb->cfg.hashMethod, _OVER)
SDB_SET_INT32(pRaw, dataPos, pDb->cfg.numOfRetensions, _OVER)
for (int32_t i = 0; i < pDb->cfg.numOfRetensions; ++i) {
TASSERT(taosArrayGetSize(pDb->cfg.pRetensions) == pDb->cfg.numOfRetensions);
SRetention *pRetension = taosArrayGet(pDb->cfg.pRetensions, i);
SDB_SET_INT64(pRaw, dataPos, pRetension->freq, _OVER)
SDB_SET_INT64(pRaw, dataPos, pRetension->keep, _OVER)
SDB_SET_INT8(pRaw, dataPos, pRetension->freqUnit, _OVER)
SDB_SET_INT8(pRaw, dataPos, pRetension->keepUnit, _OVER)
}
SDB_SET_RESERVE(pRaw, dataPos, DB_RESERVE_SIZE, _OVER)
SDB_SET_DATALEN(pRaw, dataPos, _OVER)
terrno = 0;
_OVER:
if (terrno != 0) {
mError("db:%s, failed to encode to raw:%p since %s", pDb->name, pRaw, terrstr());
sdbFreeRaw(pRaw);
return NULL;
}
mTrace("db:%s, encode to raw:%p, row:%p", pDb->name, pRaw, pDb);
return pRaw;
}
static SSdbRow *mndDbActionDecode(SSdbRaw *pRaw) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
int8_t sver = 0;
if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto _OVER;
if (sver != DB_VER_NUMBER) {
terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
goto _OVER;
}
SSdbRow *pRow = sdbAllocRow(sizeof(SDbObj));
if (pRow == NULL) goto _OVER;
SDbObj *pDb = sdbGetRowObj(pRow);
if (pDb == NULL) goto _OVER;
int32_t dataPos = 0;
SDB_GET_BINARY(pRaw, dataPos, pDb->name, TSDB_DB_FNAME_LEN, _OVER)
SDB_GET_BINARY(pRaw, dataPos, pDb->acct, TSDB_USER_LEN, _OVER)
SDB_GET_BINARY(pRaw, dataPos, pDb->createUser, TSDB_USER_LEN, _OVER)
SDB_GET_INT64(pRaw, dataPos, &pDb->createdTime, _OVER)
SDB_GET_INT64(pRaw, dataPos, &pDb->updateTime, _OVER)
SDB_GET_INT64(pRaw, dataPos, &pDb->uid, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfgVersion, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->vgVersion, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.numOfVgroups, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.numOfStables, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.buffer, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.pageSize, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.pages, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysPerFile, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep0, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep1, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep2, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.minRows, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.maxRows, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.fsyncPeriod, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.walLevel, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.precision, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.compression, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.replications, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.strict, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.cacheLastRow, _OVER)
SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.hashMethod, _OVER)
SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.numOfRetensions, _OVER)
if (pDb->cfg.numOfRetensions > 0) {
pDb->cfg.pRetensions = taosArrayInit(pDb->cfg.numOfRetensions, sizeof(SRetention));
if (pDb->cfg.pRetensions == NULL) goto _OVER;
for (int32_t i = 0; i < pDb->cfg.numOfRetensions; ++i) {
SRetention retension = {0};
SDB_GET_INT64(pRaw, dataPos, &retension.freq, _OVER)
SDB_GET_INT64(pRaw, dataPos, &retension.keep, _OVER)
SDB_GET_INT8(pRaw, dataPos, &retension.freqUnit, _OVER)
SDB_GET_INT8(pRaw, dataPos, &retension.keepUnit, _OVER)
if (taosArrayPush(pDb->cfg.pRetensions, &retension) == NULL) {
goto _OVER;
}
}
}
SDB_GET_RESERVE(pRaw, dataPos, DB_RESERVE_SIZE, _OVER)
taosInitRWLatch(&pDb->lock);
terrno = 0;
_OVER:
if (terrno != 0) {
mError("db:%s, failed to decode from raw:%p since %s", pDb->name, pRaw, terrstr());
taosMemoryFreeClear(pRow);
return NULL;
}
mTrace("db:%s, decode from raw:%p, row:%p", pDb->name, pRaw, pDb);
return pRow;
}
static int32_t mndDbActionInsert(SSdb *pSdb, SDbObj *pDb) {
mTrace("db:%s, perform insert action, row:%p", pDb->name, pDb);
return 0;
}
static int32_t mndDbActionDelete(SSdb *pSdb, SDbObj *pDb) {
mTrace("db:%s, perform delete action, row:%p", pDb->name, pDb);
taosArrayDestroy(pDb->cfg.pRetensions);
return 0;
}
static int32_t mndDbActionUpdate(SSdb *pSdb, SDbObj *pOld, SDbObj *pNew) {
mTrace("db:%s, perform update action, old row:%p new row:%p", pOld->name, pOld, pNew);
taosWLockLatch(&pOld->lock);
pOld->updateTime = pNew->updateTime;
pOld->cfgVersion = pNew->cfgVersion;
pOld->vgVersion = pNew->vgVersion;
pOld->cfg.buffer = pNew->cfg.buffer;
pOld->cfg.pages = pNew->cfg.pages;
pOld->cfg.pageSize = pNew->cfg.pageSize;
pOld->cfg.daysPerFile = pNew->cfg.daysPerFile;
pOld->cfg.daysToKeep0 = pNew->cfg.daysToKeep0;
pOld->cfg.daysToKeep1 = pNew->cfg.daysToKeep1;
pOld->cfg.daysToKeep2 = pNew->cfg.daysToKeep2;
pOld->cfg.fsyncPeriod = pNew->cfg.fsyncPeriod;
pOld->cfg.walLevel = pNew->cfg.walLevel;
pOld->cfg.strict = pNew->cfg.strict;
pOld->cfg.cacheLastRow = pNew->cfg.cacheLastRow;
pOld->cfg.replications = pNew->cfg.replications;
taosWUnLockLatch(&pOld->lock);
return 0;
}
static inline int32_t mndGetGlobalVgroupVersion(SMnode *pMnode) {
SSdb *pSdb = pMnode->pSdb;
return sdbGetTableVer(pSdb, SDB_VGROUP);
}
SDbObj *mndAcquireDb(SMnode *pMnode, const char *db) {
SSdb *pSdb = pMnode->pSdb;
SDbObj *pDb = sdbAcquire(pSdb, SDB_DB, db);
if (pDb == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {
terrno = TSDB_CODE_MND_DB_NOT_EXIST;
}
return pDb;
}
void mndReleaseDb(SMnode *pMnode, SDbObj *pDb) {
SSdb *pSdb = pMnode->pSdb;
sdbRelease(pSdb, pDb);
}
static int32_t mndAddCreateVnodeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SVnodeGid *pVgid) {
STransAction action = {0};
SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
if (pDnode == NULL) return -1;
action.epSet = mndGetDnodeEpset(pDnode);
mndReleaseDnode(pMnode, pDnode);
int32_t contLen = 0;
void *pReq = mndBuildCreateVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
if (pReq == NULL) return -1;
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_CREATE_VNODE;
action.acceptableCode = TSDB_CODE_NODE_ALREADY_DEPLOYED;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
static int32_t mndAddAlterVnodeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup) {
STransAction action = {0};
action.epSet = mndGetVgroupEpset(pMnode, pVgroup);
int32_t contLen = 0;
void *pReq = mndBuildAlterVnodeReq(pMnode, pDb, pVgroup, &contLen);
if (pReq == NULL) return -1;
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_VND_ALTER_VNODE;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
static int32_t mndAddDropVnodeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SVnodeGid *pVgid,
bool isRedo) {
STransAction action = {0};
SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
if (pDnode == NULL) return -1;
action.epSet = mndGetDnodeEpset(pDnode);
mndReleaseDnode(pMnode, pDnode);
int32_t contLen = 0;
void *pReq = mndBuildDropVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
if (pReq == NULL) return -1;
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_DROP_VNODE;
action.acceptableCode = TSDB_CODE_NODE_NOT_DEPLOYED;
if (isRedo) {
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
} else {
if (mndTransAppendUndoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
}
return 0;
}
static int32_t mndCheckDbName(const char *dbName, SUserObj *pUser) {
char *pos = strstr(dbName, TS_PATH_DELIMITER);
if (pos == NULL) {
terrno = TSDB_CODE_MND_INVALID_DB;
return -1;
}
int32_t acctId = atoi(dbName);
if (acctId != pUser->acctId) {
terrno = TSDB_CODE_MND_INVALID_DB_ACCT;
return -1;
}
return 0;
}
static int32_t mndCheckDbCfg(SMnode *pMnode, SDbCfg *pCfg) {
terrno = TSDB_CODE_MND_INVALID_DB_OPTION;
if (pCfg->numOfVgroups < TSDB_MIN_VNODES_PER_DB || pCfg->numOfVgroups > TSDB_MAX_VNODES_PER_DB) return -1;
if (pCfg->numOfStables < TSDB_DB_STREAM_MODE_OFF || pCfg->numOfStables > TSDB_DB_STREAM_MODE_ON) return -1;
if (pCfg->buffer < TSDB_MIN_BUFFER_PER_VNODE || pCfg->buffer > TSDB_MAX_BUFFER_PER_VNODE) return -1;
if (pCfg->pageSize < TSDB_MIN_PAGESIZE_PER_VNODE || pCfg->pageSize > TSDB_MAX_PAGESIZE_PER_VNODE) return -1;
if (pCfg->pages < TSDB_MIN_PAGES_PER_VNODE || pCfg->pages > TSDB_MAX_PAGES_PER_VNODE) return -1;
if (pCfg->daysPerFile < TSDB_MIN_DAYS_PER_FILE || pCfg->daysPerFile > TSDB_MAX_DAYS_PER_FILE) return -1;
if (pCfg->daysToKeep0 < TSDB_MIN_KEEP || pCfg->daysToKeep0 > TSDB_MAX_KEEP) return -1;
if (pCfg->daysToKeep1 < TSDB_MIN_KEEP || pCfg->daysToKeep1 > TSDB_MAX_KEEP) return -1;
if (pCfg->daysToKeep2 < TSDB_MIN_KEEP || pCfg->daysToKeep2 > TSDB_MAX_KEEP) return -1;
if (pCfg->daysToKeep0 < pCfg->daysPerFile) return -1;
if (pCfg->daysToKeep0 > pCfg->daysToKeep1) return -1;
if (pCfg->daysToKeep1 > pCfg->daysToKeep2) return -1;
if (pCfg->minRows < TSDB_MIN_MINROWS_FBLOCK || pCfg->minRows > TSDB_MAX_MINROWS_FBLOCK) return -1;
if (pCfg->maxRows < TSDB_MIN_MAXROWS_FBLOCK || pCfg->maxRows > TSDB_MAX_MAXROWS_FBLOCK) return -1;
if (pCfg->minRows > pCfg->maxRows) return -1;
if (pCfg->fsyncPeriod < TSDB_MIN_FSYNC_PERIOD || pCfg->fsyncPeriod > TSDB_MAX_FSYNC_PERIOD) return -1;
if (pCfg->walLevel < TSDB_MIN_WAL_LEVEL || pCfg->walLevel > TSDB_MAX_WAL_LEVEL) return -1;
if (pCfg->precision < TSDB_MIN_PRECISION && pCfg->precision > TSDB_MAX_PRECISION) return -1;
if (pCfg->compression < TSDB_MIN_COMP_LEVEL || pCfg->compression > TSDB_MAX_COMP_LEVEL) return -1;
if (pCfg->replications < TSDB_MIN_DB_REPLICA || pCfg->replications > TSDB_MAX_DB_REPLICA) return -1;
if (pCfg->replications != 1 && pCfg->replications != 3) return -1;
if (pCfg->strict < TSDB_DB_STRICT_OFF || pCfg->strict > TSDB_DB_STRICT_ON) return -1;
if (pCfg->cacheLastRow < TSDB_MIN_DB_CACHE_LAST_ROW || pCfg->cacheLastRow > TSDB_MAX_DB_CACHE_LAST_ROW) return -1;
if (pCfg->hashMethod != 1) return -1;
if (pCfg->replications > mndGetDnodeSize(pMnode)) {
terrno = TSDB_CODE_MND_NO_ENOUGH_DNODES;
return -1;
}
terrno = 0;
return TSDB_CODE_SUCCESS;
}
static void mndSetDefaultDbCfg(SDbCfg *pCfg) {
if (pCfg->numOfVgroups < 0) pCfg->numOfVgroups = TSDB_DEFAULT_VN_PER_DB;
if (pCfg->numOfStables < 0) pCfg->numOfStables = TSDB_DEFAULT_DB_SINGLE_STABLE;
if (pCfg->buffer < 0) pCfg->buffer = TSDB_DEFAULT_BUFFER_PER_VNODE;
if (pCfg->pageSize < 0) pCfg->pageSize = TSDB_DEFAULT_PAGESIZE_PER_VNODE;
if (pCfg->pages < 0) pCfg->pages = TSDB_DEFAULT_PAGES_PER_VNODE;
if (pCfg->daysPerFile < 0) pCfg->daysPerFile = TSDB_DEFAULT_DURATION_PER_FILE;
if (pCfg->daysToKeep0 < 0) pCfg->daysToKeep0 = TSDB_DEFAULT_KEEP;
if (pCfg->daysToKeep1 < 0) pCfg->daysToKeep1 = pCfg->daysToKeep0;
if (pCfg->daysToKeep2 < 0) pCfg->daysToKeep2 = pCfg->daysToKeep1;
if (pCfg->minRows < 0) pCfg->minRows = TSDB_DEFAULT_MINROWS_FBLOCK;
if (pCfg->maxRows < 0) pCfg->maxRows = TSDB_DEFAULT_MAXROWS_FBLOCK;
if (pCfg->fsyncPeriod < 0) pCfg->fsyncPeriod = TSDB_DEFAULT_FSYNC_PERIOD;
if (pCfg->walLevel < 0) pCfg->walLevel = TSDB_DEFAULT_WAL_LEVEL;
if (pCfg->precision < 0) pCfg->precision = TSDB_DEFAULT_PRECISION;
if (pCfg->compression < 0) pCfg->compression = TSDB_DEFAULT_COMP_LEVEL;
if (pCfg->replications < 0) pCfg->replications = TSDB_DEFAULT_DB_REPLICA;
if (pCfg->strict < 0) pCfg->strict = TSDB_DEFAULT_DB_STRICT;
if (pCfg->cacheLastRow < 0) pCfg->cacheLastRow = TSDB_DEFAULT_CACHE_LAST_ROW;
if (pCfg->numOfRetensions < 0) pCfg->numOfRetensions = 0;
}
static int32_t mndSetCreateDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
if (pDbRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pDbRaw) != 0) return -1;
if (sdbSetRawStatus(pDbRaw, SDB_STATUS_CREATING) != 0) return -1;
for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
if (pVgRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pVgRaw) != 0) return -1;
if (sdbSetRawStatus(pVgRaw, SDB_STATUS_CREATING) != 0) return -1;
}
return 0;
}
static int32_t mndSetCreateDbUndoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
if (pDbRaw == NULL) return -1;
if (mndTransAppendUndolog(pTrans, pDbRaw) != 0) return -1;
if (sdbSetRawStatus(pDbRaw, SDB_STATUS_DROPPED) != 0) return -1;
for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
if (pVgRaw == NULL) return -1;
if (mndTransAppendUndolog(pTrans, pVgRaw) != 0) return -1;
if (sdbSetRawStatus(pVgRaw, SDB_STATUS_DROPPED) != 0) return -1;
}
return 0;
}
static int32_t mndSetCreateDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
if (pDbRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pDbRaw) != 0) return -1;
if (sdbSetRawStatus(pDbRaw, SDB_STATUS_READY) != 0) return -1;
for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
if (pVgRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) return -1;
if (sdbSetRawStatus(pVgRaw, SDB_STATUS_READY) != 0) return -1;
}
return 0;
}
static int32_t mndSetCreateDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
for (int32_t vg = 0; vg < pDb->cfg.numOfVgroups; ++vg) {
SVgObj *pVgroup = pVgroups + vg;
for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
SVnodeGid *pVgid = pVgroup->vnodeGid + vn;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, pVgroup, pVgid) != 0) {
return -1;
}
}
}
return 0;
}
static int32_t mndSetCreateDbUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
for (int32_t vg = 0; vg < pDb->cfg.numOfVgroups; ++vg) {
SVgObj *pVgroup = pVgroups + vg;
for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
SVnodeGid *pVgid = pVgroup->vnodeGid + vn;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, pVgroup, pVgid, false) != 0) {
return -1;
}
}
}
return 0;
}
static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate, SUserObj *pUser) {
SDbObj dbObj = {0};
memcpy(dbObj.name, pCreate->db, TSDB_DB_FNAME_LEN);
memcpy(dbObj.acct, pUser->acct, TSDB_USER_LEN);
dbObj.createdTime = taosGetTimestampMs();
dbObj.updateTime = dbObj.createdTime;
dbObj.uid = mndGenerateUid(dbObj.name, TSDB_DB_FNAME_LEN);
dbObj.cfgVersion = 1;
dbObj.vgVersion = 1;
memcpy(dbObj.createUser, pUser->user, TSDB_USER_LEN);
dbObj.cfg = (SDbCfg){
.numOfVgroups = pCreate->numOfVgroups,
.numOfStables = pCreate->numOfStables,
.buffer = pCreate->buffer,
.pageSize = pCreate->pageSize,
.pages = pCreate->pages,
.daysPerFile = pCreate->daysPerFile,
.daysToKeep0 = pCreate->daysToKeep0,
.daysToKeep1 = pCreate->daysToKeep1,
.daysToKeep2 = pCreate->daysToKeep2,
.minRows = pCreate->minRows,
.maxRows = pCreate->maxRows,
.fsyncPeriod = pCreate->fsyncPeriod,
.walLevel = pCreate->walLevel,
.precision = pCreate->precision,
.compression = pCreate->compression,
.replications = pCreate->replications,
.strict = pCreate->strict,
.cacheLastRow = pCreate->cacheLastRow,
.hashMethod = 1,
};
dbObj.cfg.numOfRetensions = pCreate->numOfRetensions;
dbObj.cfg.pRetensions = pCreate->pRetensions;
mndSetDefaultDbCfg(&dbObj.cfg);
if (mndCheckDbName(dbObj.name, pUser) != 0) {
mError("db:%s, failed to create since %s", pCreate->db, terrstr());
return -1;
}
if (mndCheckDbCfg(pMnode, &dbObj.cfg) != 0) {
mError("db:%s, failed to create since %s", pCreate->db, terrstr());
return -1;
}
SVgObj *pVgroups = NULL;
if (mndAllocVgroup(pMnode, &dbObj, &pVgroups) != 0) {
mError("db:%s, failed to create since %s", pCreate->db, terrstr());
return -1;
}
int32_t code = -1;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_TYPE_CREATE_DB, pReq);
if (pTrans == NULL) goto _OVER;
mDebug("trans:%d, used to create db:%s", pTrans->id, pCreate->db);
mndTransSetDbInfo(pTrans, &dbObj);
if (mndSetCreateDbRedoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
if (mndSetCreateDbUndoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
if (mndSetCreateDbCommitLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
if (mndSetCreateDbRedoActions(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
if (mndSetCreateDbUndoActions(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
code = 0;
_OVER:
taosMemoryFree(pVgroups);
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessCreateDbReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SUserObj *pUser = NULL;
SCreateDbReq createReq = {0};
if (tDeserializeSCreateDbReq(pReq->pCont, pReq->contLen, &createReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mDebug("db:%s, start to create, vgroups:%d", createReq.db, createReq.numOfVgroups);
pDb = mndAcquireDb(pMnode, createReq.db);
if (pDb != NULL) {
if (createReq.ignoreExist) {
mDebug("db:%s, already exist, ignore exist is set", createReq.db);
code = 0;
goto _OVER;
} else {
terrno = TSDB_CODE_MND_DB_ALREADY_EXIST;
goto _OVER;
}
} else if (terrno != TSDB_CODE_MND_DB_NOT_EXIST) {
goto _OVER;
}
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
goto _OVER;
}
if (mndCheckCreateDbAuth(pUser) != 0) {
goto _OVER;
}
code = mndCreateDb(pMnode, pReq, &createReq, pUser);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
mError("db:%s, failed to create since %s", createReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
mndReleaseUser(pMnode, pUser);
tFreeSCreateDbReq(&createReq);
return code;
}
static int32_t mndSetDbCfgFromAlterDbReq(SDbObj *pDb, SAlterDbReq *pAlter) {
terrno = TSDB_CODE_MND_DB_OPTION_UNCHANGED;
if (pAlter->buffer > 0 && pAlter->buffer != pDb->cfg.buffer) {
pDb->cfg.buffer = pAlter->buffer;
terrno = 0;
}
if (pAlter->pages > 0 && pAlter->pages != pDb->cfg.pages) {
pDb->cfg.pages = pAlter->pages;
terrno = 0;
}
if (pAlter->pageSize > 0 && pAlter->pageSize != pDb->cfg.pageSize) {
pDb->cfg.pageSize = pAlter->pageSize;
terrno = 0;
}
if (pAlter->daysPerFile > 0 && pAlter->daysPerFile != pDb->cfg.daysPerFile) {
pDb->cfg.daysPerFile = pAlter->daysPerFile;
terrno = 0;
}
if (pAlter->daysToKeep0 > 0 && pAlter->daysToKeep0 != pDb->cfg.daysToKeep0) {
pDb->cfg.daysToKeep0 = pAlter->daysToKeep0;
terrno = 0;
}
if (pAlter->daysToKeep1 > 0 && pAlter->daysToKeep1 != pDb->cfg.daysToKeep1) {
pDb->cfg.daysToKeep1 = pAlter->daysToKeep1;
terrno = 0;
}
if (pAlter->daysToKeep2 > 0 && pAlter->daysToKeep2 != pDb->cfg.daysToKeep2) {
pDb->cfg.daysToKeep2 = pAlter->daysToKeep2;
terrno = 0;
}
if (pAlter->fsyncPeriod >= 0 && pAlter->fsyncPeriod != pDb->cfg.fsyncPeriod) {
pDb->cfg.fsyncPeriod = pAlter->fsyncPeriod;
terrno = 0;
}
if (pAlter->walLevel >= 0 && pAlter->walLevel != pDb->cfg.walLevel) {
pDb->cfg.walLevel = pAlter->walLevel;
terrno = 0;
}
if (pAlter->strict >= 0 && pAlter->strict != pDb->cfg.strict) {
pDb->cfg.strict = pAlter->strict;
terrno = 0;
}
if (pAlter->cacheLastRow >= 0 && pAlter->cacheLastRow != pDb->cfg.cacheLastRow) {
pDb->cfg.cacheLastRow = pAlter->cacheLastRow;
terrno = 0;
}
if (pAlter->replications > 0 && pAlter->replications != pDb->cfg.replications) {
pDb->cfg.replications = pAlter->replications;
pDb->vgVersion++;
terrno = 0;
}
return terrno;
}
static int32_t mndSetAlterDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
SSdbRaw *pRedoRaw = mndDbActionEncode(pOld);
if (pRedoRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pRedoRaw) != 0) return -1;
if (sdbSetRawStatus(pRedoRaw, SDB_STATUS_READY) != 0) return -1;
return 0;
}
static int32_t mndSetAlterDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
SSdbRaw *pCommitRaw = mndDbActionEncode(pNew);
if (pCommitRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY) != 0) return -1;
return 0;
}
static int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SArray *pArray) {
if (pVgroup->replica <= 0 || pVgroup->replica == pDb->cfg.replications) {
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, pVgroup) != 0) {
return -1;
}
} else {
SVgObj newVgroup = {0};
memcpy(&newVgroup, pVgroup, sizeof(SVgObj));
if (newVgroup.replica < pDb->cfg.replications) {
mInfo("db:%s, vgId:%d, will add 2 vnodes, vn:0 dnode:%d", pVgroup->dbName, pVgroup->vgId,
pVgroup->vnodeGid[0].dnodeId);
if (mndAddVnodeToVgroup(pMnode, &newVgroup, pArray) != 0) {
mError("db:%s, failed to add vnode to vgId:%d since %s", pDb->name, newVgroup.vgId, terrstr());
return -1;
}
newVgroup.replica = pDb->cfg.replications;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[1]) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[2]) != 0) return -1;
} else {
mInfo("db:%s, vgId:%d, will remove 2 vnodes", pVgroup->dbName, pVgroup->vgId);
SVnodeGid del1 = {0};
SVnodeGid del2 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVgroup, pArray, &del1, &del2) != 0) {
mError("db:%s, failed to remove vnode from vgId:%d since %s", pDb->name, newVgroup.vgId, terrstr());
return -1;
}
newVgroup.replica = pDb->cfg.replications;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del1, true) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del2, true) != 0) return -1;
}
SSdbRaw *pVgRaw = mndVgroupActionEncode(&newVgroup);
if (pVgRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) return -1;
if (sdbSetRawStatus(pVgRaw, SDB_STATUS_READY) != 0) return -1;
}
return 0;
}
static int32_t mndSetAlterDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;
SArray *pArray = mndBuildDnodesArray(pMnode);
while (1) {
SVgObj *pVgroup = NULL;
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid == pNew->uid) {
if (mndBuildAlterVgroupAction(pMnode, pTrans, pNew, pVgroup, pArray) != 0) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
taosArrayDestroy(pArray);
return -1;
}
}
sdbRelease(pSdb, pVgroup);
}
taosArrayDestroy(pArray);
return 0;
}
static int32_t mndAlterDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pOld, SDbObj *pNew) {
int32_t code = -1;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_TYPE_ALTER_DB, pReq);
if (pTrans == NULL) goto _OVER;
mDebug("trans:%d, used to alter db:%s", pTrans->id, pOld->name);
mndTransSetDbInfo(pTrans, pOld);
if (mndSetAlterDbRedoLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
if (mndSetAlterDbCommitLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
if (mndSetAlterDbRedoActions(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
code = 0;
_OVER:
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessAlterDbReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SUserObj *pUser = NULL;
SAlterDbReq alterReq = {0};
SDbObj dbObj = {0};
if (tDeserializeSAlterDbReq(pReq->pCont, pReq->contLen, &alterReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mDebug("db:%s, start to alter", alterReq.db);
pDb = mndAcquireDb(pMnode, alterReq.db);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_EXIST;
goto _OVER;
}
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
goto _OVER;
}
if (mndCheckAlterDropCompactDbAuth(pUser, pDb) != 0) {
goto _OVER;
}
memcpy(&dbObj, pDb, sizeof(SDbObj));
if (dbObj.cfg.pRetensions != NULL) {
dbObj.cfg.pRetensions = taosArrayDup(pDb->cfg.pRetensions);
if (dbObj.cfg.pRetensions == NULL) goto _OVER;
}
code = mndSetDbCfgFromAlterDbReq(&dbObj, &alterReq);
if (code != 0) goto _OVER;
code = mndCheckDbCfg(pMnode, &dbObj.cfg);
if (code != 0) goto _OVER;
dbObj.cfgVersion++;
dbObj.updateTime = taosGetTimestampMs();
code = mndAlterDb(pMnode, pReq, pDb, &dbObj);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
mError("db:%s, failed to alter since %s", alterReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
mndReleaseUser(pMnode, pUser);
taosArrayDestroy(dbObj.cfg.pRetensions);
return code;
}
static int32_t mndProcessGetDbCfgReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SDbCfgReq cfgReq = {0};
SDbCfgRsp cfgRsp = {0};
if (tDeserializeSDbCfgReq(pReq->pCont, pReq->contLen, &cfgReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
pDb = mndAcquireDb(pMnode, cfgReq.db);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_EXIST;
goto _OVER;
}
cfgRsp.numOfVgroups = pDb->cfg.numOfVgroups;
cfgRsp.numOfStables = pDb->cfg.numOfStables;
cfgRsp.buffer = pDb->cfg.buffer;
cfgRsp.pageSize = pDb->cfg.pageSize;
cfgRsp.pages = pDb->cfg.pages;
cfgRsp.daysPerFile = pDb->cfg.daysPerFile;
cfgRsp.daysToKeep0 = pDb->cfg.daysToKeep0;
cfgRsp.daysToKeep1 = pDb->cfg.daysToKeep1;
cfgRsp.daysToKeep2 = pDb->cfg.daysToKeep2;
cfgRsp.minRows = pDb->cfg.minRows;
cfgRsp.maxRows = pDb->cfg.maxRows;
cfgRsp.fsyncPeriod = pDb->cfg.fsyncPeriod;
cfgRsp.walLevel = pDb->cfg.walLevel;
cfgRsp.precision = pDb->cfg.precision;
cfgRsp.compression = pDb->cfg.compression;
cfgRsp.replications = pDb->cfg.replications;
cfgRsp.strict = pDb->cfg.strict;
cfgRsp.cacheLastRow = pDb->cfg.cacheLastRow;
cfgRsp.numOfRetensions = pDb->cfg.numOfRetensions;
cfgRsp.pRetensions = pDb->cfg.pRetensions;
int32_t contLen = tSerializeSDbCfgRsp(NULL, 0, &cfgRsp);
void *pRsp = rpcMallocCont(contLen);
if (pRsp == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
code = -1;
goto _OVER;
}
tSerializeSDbCfgRsp(pRsp, contLen, &cfgRsp);
pReq->info.rsp = pRsp;
pReq->info.rspLen = contLen;
code = 0;
_OVER:
if (code != 0) {
mError("db:%s, failed to get cfg since %s", cfgReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
return code;
}
static int32_t mndSetDropDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
SSdbRaw *pRedoRaw = mndDbActionEncode(pDb);
if (pRedoRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pRedoRaw) != 0) return -1;
if (sdbSetRawStatus(pRedoRaw, SDB_STATUS_DROPPING) != 0) return -1;
return 0;
}
static int32_t mndSetDropDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
SSdbRaw *pCommitRaw = mndDbActionEncode(pDb);
if (pCommitRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_DROPPED) != 0) return -1;
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;
while (1) {
SVgObj *pVgroup = NULL;
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid == pDb->uid) {
SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroup);
if (pVgRaw == NULL || mndTransAppendCommitlog(pTrans, pVgRaw) != 0) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
return -1;
}
sdbSetRawStatus(pVgRaw, SDB_STATUS_DROPPED);
}
sdbRelease(pSdb, pVgroup);
}
while (1) {
SStbObj *pStb = NULL;
pIter = sdbFetch(pSdb, SDB_STB, pIter, (void **)&pStb);
if (pIter == NULL) break;
if (pStb->dbUid == pDb->uid) {
SSdbRaw *pStbRaw = mndStbActionEncode(pStb);
if (pStbRaw == NULL || mndTransAppendCommitlog(pTrans, pStbRaw) != 0) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pStbRaw);
return -1;
}
sdbSetRawStatus(pStbRaw, SDB_STATUS_DROPPED);
}
sdbRelease(pSdb, pStb);
}
return 0;
}
static int32_t mndBuildDropVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup) {
for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
SVnodeGid *pVgid = pVgroup->vnodeGid + vn;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, pVgroup, pVgid, true) != 0) {
return -1;
}
}
return 0;
}
static int32_t mndSetDropDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;
while (1) {
SVgObj *pVgroup = NULL;
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid == pDb->uid) {
if (mndBuildDropVgroupAction(pMnode, pTrans, pDb, pVgroup) != 0) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
return -1;
}
}
sdbRelease(pSdb, pVgroup);
}
return 0;
}
static int32_t mndBuildDropDbRsp(SDbObj *pDb, int32_t *pRspLen, void **ppRsp, bool useRpcMalloc) {
SDropDbRsp dropRsp = {0};
if (pDb != NULL) {
memcpy(dropRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
dropRsp.uid = pDb->uid;
}
int32_t rspLen = tSerializeSDropDbRsp(NULL, 0, &dropRsp);
void *pRsp = NULL;
if (useRpcMalloc) {
pRsp = rpcMallocCont(rspLen);
} else {
pRsp = taosMemoryMalloc(rspLen);
}
if (pRsp == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
tSerializeSDropDbRsp(pRsp, rspLen, &dropRsp);
*pRspLen = rspLen;
*ppRsp = pRsp;
return 0;
}
static int32_t mndDropDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb) {
int32_t code = -1;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_TYPE_DROP_DB, pReq);
if (pTrans == NULL) goto _OVER;
mDebug("trans:%d, used to drop db:%s", pTrans->id, pDb->name);
mndTransSetDbInfo(pTrans, pDb);
if (mndSetDropDbRedoLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
if (mndSetDropDbCommitLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
/*if (mndDropOffsetByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
/*if (mndDropSubByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
/*if (mndDropTopicByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
if (mndSetDropDbRedoActions(pMnode, pTrans, pDb) != 0) goto _OVER;
SUserObj *pUser = mndAcquireUser(pMnode, pDb->createUser);
if (pUser != NULL) {
pUser->authVersion++;
SSdbRaw *pCommitRaw = mndUserActionEncode(pUser);
if (pCommitRaw == NULL || mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) {
mError("trans:%d, failed to append redo log since %s", pTrans->id, terrstr());
goto _OVER;
}
sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY);
}
int32_t rspLen = 0;
void *pRsp = NULL;
if (mndBuildDropDbRsp(pDb, &rspLen, &pRsp, false) < 0) goto _OVER;
mndTransSetRpcRsp(pTrans, pRsp, rspLen);
if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
code = 0;
_OVER:
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessDropDbReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SUserObj *pUser = NULL;
SDropDbReq dropReq = {0};
if (tDeserializeSDropDbReq(pReq->pCont, pReq->contLen, &dropReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mDebug("db:%s, start to drop", dropReq.db);
pDb = mndAcquireDb(pMnode, dropReq.db);
if (pDb == NULL) {
if (dropReq.ignoreNotExists) {
code = mndBuildDropDbRsp(pDb, &pReq->info.rspLen, &pReq->info.rsp, true);
goto _OVER;
} else {
terrno = TSDB_CODE_MND_DB_NOT_EXIST;
goto _OVER;
}
}
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
goto _OVER;
}
if (mndCheckAlterDropCompactDbAuth(pUser, pDb) != 0) {
goto _OVER;
}
code = mndDropDb(pMnode, pReq, pDb);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
mError("db:%s, failed to drop since %s", dropReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
mndReleaseUser(pMnode, pUser);
return code;
}
static int32_t mndGetDBTableNum(SDbObj *pDb, SMnode *pMnode) {
int32_t numOfTables = 0;
int32_t vindex = 0;
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;
while (vindex < pDb->cfg.numOfVgroups) {
SVgObj *pVgroup = NULL;
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid == pDb->uid) {
numOfTables += pVgroup->numOfTables / TSDB_TABLE_NUM_UNIT;
vindex++;
}
sdbRelease(pSdb, pVgroup);
}
sdbCancelFetch(pSdb, pIter);
return numOfTables;
}
static void mndBuildDBVgroupInfo(SDbObj *pDb, SMnode *pMnode, SArray *pVgList) {
int32_t vindex = 0;
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;
while (1) {
SVgObj *pVgroup = NULL;
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if ((NULL == pDb || pVgroup->dbUid == pDb->uid) && !pVgroup->isTsma) {
SVgroupInfo vgInfo = {0};
vgInfo.vgId = pVgroup->vgId;
vgInfo.hashBegin = pVgroup->hashBegin;
vgInfo.hashEnd = pVgroup->hashEnd;
vgInfo.numOfTable = pVgroup->numOfTables / TSDB_TABLE_NUM_UNIT;
vgInfo.epSet.numOfEps = pVgroup->replica;
for (int32_t gid = 0; gid < pVgroup->replica; ++gid) {
SVnodeGid *pVgid = &pVgroup->vnodeGid[gid];
SEp *pEp = &vgInfo.epSet.eps[gid];
SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
if (pDnode != NULL) {
memcpy(pEp->fqdn, pDnode->fqdn, TSDB_FQDN_LEN);
pEp->port = pDnode->port;
}
mndReleaseDnode(pMnode, pDnode);
if (pVgid->role == TAOS_SYNC_STATE_LEADER) {
vgInfo.epSet.inUse = gid;
}
}
vindex++;
taosArrayPush(pVgList, &vgInfo);
}
sdbRelease(pSdb, pVgroup);
if (pDb && (vindex >= pDb->cfg.numOfVgroups)) {
break;
}
}
sdbCancelFetch(pSdb, pIter);
}
int32_t mndExtractDbInfo(SMnode *pMnode, SDbObj *pDb, SUseDbRsp *pRsp, const SUseDbReq *pReq) {
pRsp->pVgroupInfos = taosArrayInit(pDb->cfg.numOfVgroups, sizeof(SVgroupInfo));
if (pRsp->pVgroupInfos == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
int32_t numOfTable = mndGetDBTableNum(pDb, pMnode);
if (pReq == NULL || pReq->vgVersion < pDb->vgVersion || pReq->dbId != pDb->uid || numOfTable != pReq->numOfTable) {
mndBuildDBVgroupInfo(pDb, pMnode, pRsp->pVgroupInfos);
}
memcpy(pRsp->db, pDb->name, TSDB_DB_FNAME_LEN);
pRsp->uid = pDb->uid;
pRsp->vgVersion = pDb->vgVersion;
pRsp->vgNum = taosArrayGetSize(pRsp->pVgroupInfos);
pRsp->hashMethod = pDb->cfg.hashMethod;
return 0;
}
static int32_t mndProcessUseDbReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SUserObj *pUser = NULL;
SUseDbReq usedbReq = {0};
SUseDbRsp usedbRsp = {0};
if (tDeserializeSUseDbReq(pReq->pCont, pReq->contLen, &usedbReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
char *p = strchr(usedbReq.db, '.');
if (p && ((0 == strcmp(p + 1, TSDB_INFORMATION_SCHEMA_DB) || (0 == strcmp(p + 1, TSDB_PERFORMANCE_SCHEMA_DB))))) {
memcpy(usedbRsp.db, usedbReq.db, TSDB_DB_FNAME_LEN);
int32_t vgVersion = mndGetGlobalVgroupVersion(pMnode);
if (usedbReq.vgVersion < vgVersion) {
usedbRsp.pVgroupInfos = taosArrayInit(10, sizeof(SVgroupInfo));
if (usedbRsp.pVgroupInfos == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
goto _OVER;
}
mndBuildDBVgroupInfo(NULL, pMnode, usedbRsp.pVgroupInfos);
usedbRsp.vgVersion = vgVersion++;
} else {
usedbRsp.vgVersion = usedbReq.vgVersion;
}
usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);
code = 0;
// no jump, need to construct rsp
} else {
pDb = mndAcquireDb(pMnode, usedbReq.db);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_EXIST;
memcpy(usedbRsp.db, usedbReq.db, TSDB_DB_FNAME_LEN);
usedbRsp.uid = usedbReq.dbId;
usedbRsp.vgVersion = usedbReq.vgVersion;
mError("db:%s, failed to process use db req since %s", usedbReq.db, terrstr());
} else {
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
goto _OVER;
}
if (mndCheckUseDbAuth(pUser, pDb) != 0) {
goto _OVER;
}
if (mndExtractDbInfo(pMnode, pDb, &usedbRsp, &usedbReq) < 0) {
goto _OVER;
}
code = 0;
}
}
int32_t contLen = tSerializeSUseDbRsp(NULL, 0, &usedbRsp);
void *pRsp = rpcMallocCont(contLen);
if (pRsp == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
code = -1;
goto _OVER;
}
tSerializeSUseDbRsp(pRsp, contLen, &usedbRsp);
pReq->info.rsp = pRsp;
pReq->info.rspLen = contLen;
_OVER:
if (code != 0) {
mError("db:%s, failed to process use db req since %s", usedbReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
mndReleaseUser(pMnode, pUser);
tFreeSUsedbRsp(&usedbRsp);
return code;
}
int32_t mndValidateDbInfo(SMnode *pMnode, SDbVgVersion *pDbs, int32_t numOfDbs, void **ppRsp, int32_t *pRspLen) {
SUseDbBatchRsp batchUseRsp = {0};
batchUseRsp.pArray = taosArrayInit(numOfDbs, sizeof(SUseDbRsp));
if (batchUseRsp.pArray == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
for (int32_t i = 0; i < numOfDbs; ++i) {
SDbVgVersion *pDbVgVersion = &pDbs[i];
pDbVgVersion->dbId = htobe64(pDbVgVersion->dbId);
pDbVgVersion->vgVersion = htonl(pDbVgVersion->vgVersion);
pDbVgVersion->numOfTable = htonl(pDbVgVersion->numOfTable);
SUseDbRsp usedbRsp = {0};
SDbObj *pDb = mndAcquireDb(pMnode, pDbVgVersion->dbFName);
if (pDb == NULL) {
mDebug("db:%s, no exist", pDbVgVersion->dbFName);
memcpy(usedbRsp.db, pDbVgVersion->dbFName, TSDB_DB_FNAME_LEN);
usedbRsp.uid = pDbVgVersion->dbId;
usedbRsp.vgVersion = -1;
taosArrayPush(batchUseRsp.pArray, &usedbRsp);
continue;
}
int32_t numOfTable = mndGetDBTableNum(pDb, pMnode);
if (pDbVgVersion->vgVersion >= pDb->vgVersion && numOfTable == pDbVgVersion->numOfTable) {
mDebug("db:%s, version & numOfTable not changed", pDbVgVersion->dbFName);
mndReleaseDb(pMnode, pDb);
continue;
}
usedbRsp.pVgroupInfos = taosArrayInit(pDb->cfg.numOfVgroups, sizeof(SVgroupInfo));
if (usedbRsp.pVgroupInfos == NULL) {
mndReleaseDb(pMnode, pDb);
mError("db:%s, failed to malloc usedb response", pDb->name);
continue;
}
mndBuildDBVgroupInfo(pDb, pMnode, usedbRsp.pVgroupInfos);
memcpy(usedbRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
usedbRsp.uid = pDb->uid;
usedbRsp.vgVersion = pDb->vgVersion;
usedbRsp.vgNum = (int32_t)taosArrayGetSize(usedbRsp.pVgroupInfos);
usedbRsp.hashMethod = pDb->cfg.hashMethod;
taosArrayPush(batchUseRsp.pArray, &usedbRsp);
mndReleaseDb(pMnode, pDb);
}
int32_t rspLen = tSerializeSUseDbBatchRsp(NULL, 0, &batchUseRsp);
void *pRsp = taosMemoryMalloc(rspLen);
if (pRsp == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
tFreeSUseDbBatchRsp(&batchUseRsp);
return -1;
}
tSerializeSUseDbBatchRsp(pRsp, rspLen, &batchUseRsp);
*ppRsp = pRsp;
*pRspLen = rspLen;
tFreeSUseDbBatchRsp(&batchUseRsp);
return 0;
}
static int32_t mndProcessCompactDbReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SDbObj *pDb = NULL;
SUserObj *pUser = NULL;
SCompactDbReq compactReq = {0};
if (tDeserializeSCompactDbReq(pReq->pCont, pReq->contLen, &compactReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mDebug("db:%s, start to sync", compactReq.db);
pDb = mndAcquireDb(pMnode, compactReq.db);
if (pDb == NULL) {
goto _OVER;
}
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
goto _OVER;
}
if (mndCheckAlterDropCompactDbAuth(pUser, pDb) != 0) {
goto _OVER;
}
// code = mndCompactDb();
_OVER:
if (code != 0) {
mError("db:%s, failed to process compact db req since %s", compactReq.db, terrstr());
}
mndReleaseDb(pMnode, pDb);
mndReleaseUser(pMnode, pUser);
return code;
}
const char *mndGetDbStr(const char *src) {
char *pos = strstr(src, TS_PATH_DELIMITER);
if (pos != NULL) ++pos;
if (pos == NULL) return src;
return pos;
}
static void dumpDbInfoData(SSDataBlock *pBlock, SDbObj *pDb, SShowObj *pShow, int32_t rows, int64_t numOfTables,
bool sysDb) {
int32_t cols = 0;
int32_t bytes = pShow->pMeta->pSchemas[cols].bytes;
char *buf = taosMemoryMalloc(bytes);
const char *name = mndGetDbStr(pDb->name);
if (name != NULL) {
STR_WITH_MAXSIZE_TO_VARSTR(buf, name, bytes);
} else {
STR_WITH_MAXSIZE_TO_VARSTR(buf, "NULL", bytes);
}
char *status = "ready";
char statusB[24] = {0};
STR_WITH_SIZE_TO_VARSTR(statusB, status, strlen(status));
if (sysDb) {
for (int32_t i = 0; i < pShow->numOfColumns; ++i) {
SColumnInfoData *pColInfo = taosArrayGet(pBlock->pDataBlock, i);
if (i == 0) {
colDataAppend(pColInfo, rows, buf, false);
} else if (i == 3) {
colDataAppend(pColInfo, rows, (const char *)&numOfTables, false);
} else if (i == 20) {
colDataAppend(pColInfo, rows, statusB, false);
} else {
colDataAppendNULL(pColInfo, rows);
}
}
} else {
SColumnInfoData *pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, buf, false);
taosMemoryFree(buf);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->createdTime, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.numOfVgroups, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&numOfTables, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.replications, false);
const char *src = pDb->cfg.strict ? "strict" : "nostrict";
char strict[24] = {0};
STR_WITH_SIZE_TO_VARSTR(strict, src, strlen(src));
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)strict, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.daysPerFile, false);
char tmp[128] = {0};
int32_t len = 0;
if (pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep1 || pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep2) {
len = sprintf(&tmp[VARSTR_HEADER_SIZE], "%d,%d,%d", pDb->cfg.daysToKeep1, pDb->cfg.daysToKeep2,
pDb->cfg.daysToKeep0);
} else {
len = sprintf(&tmp[VARSTR_HEADER_SIZE], "%d,%d,%d", pDb->cfg.daysToKeep0, pDb->cfg.daysToKeep1,
pDb->cfg.daysToKeep2);
}
varDataSetLen(tmp, len);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)tmp, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.buffer, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.pageSize, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.pages, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.minRows, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.maxRows, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.walLevel, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.fsyncPeriod, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.compression, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.cacheLastRow, false);
char *prec = NULL;
switch (pDb->cfg.precision) {
case TSDB_TIME_PRECISION_MILLI:
prec = TSDB_TIME_PRECISION_MILLI_STR;
break;
case TSDB_TIME_PRECISION_MICRO:
prec = TSDB_TIME_PRECISION_MICRO_STR;
break;
case TSDB_TIME_PRECISION_NANO:
prec = TSDB_TIME_PRECISION_NANO_STR;
break;
default:
prec = "none";
break;
}
char t[10] = {0};
STR_WITH_SIZE_TO_VARSTR(t, prec, 2);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)t, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.numOfStables, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols);
colDataAppend(pColInfo, rows, (const char *)statusB, false);
}
}
static void setInformationSchemaDbCfg(SDbObj *pDbObj) {
ASSERT(pDbObj != NULL);
strncpy(pDbObj->name, TSDB_INFORMATION_SCHEMA_DB, tListLen(pDbObj->name));
pDbObj->createdTime = 0;
pDbObj->cfg.numOfVgroups = 0;
pDbObj->cfg.strict = 1;
pDbObj->cfg.replications = 1;
pDbObj->cfg.precision = TSDB_TIME_PRECISION_MILLI;
}
static void setPerfSchemaDbCfg(SDbObj *pDbObj) {
ASSERT(pDbObj != NULL);
strncpy(pDbObj->name, TSDB_PERFORMANCE_SCHEMA_DB, tListLen(pDbObj->name));
pDbObj->createdTime = 0;
pDbObj->cfg.numOfVgroups = 0;
pDbObj->cfg.strict = 1;
pDbObj->cfg.replications = 1;
pDbObj->cfg.precision = TSDB_TIME_PRECISION_MILLI;
}
static bool mndGetTablesOfDbFp(SMnode *pMnode, void *pObj, void *p1, void *p2, void *p3) {
SVgObj *pVgroup = pObj;
int32_t *numOfTables = p1;
*numOfTables += pVgroup->numOfTables;
return true;
}
static int32_t mndRetrieveDbs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rowsCapacity) {
SMnode *pMnode = pReq->info.node;
SSdb *pSdb = pMnode->pSdb;
int32_t numOfRows = 0;
SDbObj *pDb = NULL;
// Append the information_schema database into the result.
if (!pShow->sysDbRsp) {
SDbObj infoschemaDb = {0};
setInformationSchemaDbCfg(&infoschemaDb);
dumpDbInfoData(pBlock, &infoschemaDb, pShow, numOfRows, 14, true);
numOfRows += 1;
SDbObj perfschemaDb = {0};
setPerfSchemaDbCfg(&perfschemaDb);
dumpDbInfoData(pBlock, &perfschemaDb, pShow, numOfRows, 3, true);
numOfRows += 1;
pShow->sysDbRsp = true;
}
while (numOfRows < rowsCapacity) {
pShow->pIter = sdbFetch(pSdb, SDB_DB, pShow->pIter, (void **)&pDb);
if (pShow->pIter == NULL) {
break;
}
int32_t numOfTables = 0;
sdbTraverse(pSdb, SDB_VGROUP, mndGetTablesOfDbFp, &numOfTables, NULL, NULL);
dumpDbInfoData(pBlock, pDb, pShow, numOfRows, numOfTables, false);
numOfRows++;
sdbRelease(pSdb, pDb);
}
pShow->numOfRows += numOfRows;
return numOfRows;
}
static void mndCancelGetNextDb(SMnode *pMnode, void *pIter) {
SSdb *pSdb = pMnode->pSdb;
sdbCancelFetch(pSdb, pIter);
}