mndDb.c 45.5 KB
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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/>.
 */

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#define _DEFAULT_SOURCE
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#include "mndDb.h"
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#include "mndAuth.h"
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#include "mndDnode.h"
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#include "mndShow.h"
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#include "mndStb.h"
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#include "mndTrans.h"
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#include "mndUser.h"
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#include "mndVgroup.h"
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#define TSDB_DB_VER_NUMBER   1
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#define TSDB_DB_RESERVE_SIZE 64
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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);
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static int32_t  mndDbActionUpdate(SSdb *pSdb, SDbObj *pOld, SDbObj *pNew);
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static int32_t  mndProcessCreateDbReq(SMnodeMsg *pReq);
static int32_t  mndProcessAlterDbReq(SMnodeMsg *pReq);
static int32_t  mndProcessDropDbReq(SMnodeMsg *pReq);
static int32_t  mndProcessUseDbReq(SMnodeMsg *pReq);
static int32_t  mndProcessSyncDbReq(SMnodeMsg *pReq);
static int32_t  mndProcessCompactDbReq(SMnodeMsg *pReq);
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static int32_t  mndGetDbMeta(SMnodeMsg *pReq, SShowObj *pShow, STableMetaRsp *pMeta);
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static int32_t  mndRetrieveDbs(SMnodeMsg *pReq, SShowObj *pShow, char *data, int32_t rows);
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static void     mndCancelGetNextDb(SMnode *pMnode, void *pIter);
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int32_t mndInitDb(SMnode *pMnode) {
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  SSdbTable table = {.sdbType = SDB_DB,
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                     .keyType = SDB_KEY_BINARY,
                     .encodeFp = (SdbEncodeFp)mndDbActionEncode,
                     .decodeFp = (SdbDecodeFp)mndDbActionDecode,
                     .insertFp = (SdbInsertFp)mndDbActionInsert,
                     .updateFp = (SdbUpdateFp)mndDbActionUpdate,
                     .deleteFp = (SdbDeleteFp)mndDbActionDelete};

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  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_SYNC_DB, mndProcessSyncDbReq);
  mndSetMsgHandle(pMnode, TDMT_MND_COMPACT_DB, mndProcessCompactDbReq);
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  mndAddShowMetaHandle(pMnode, TSDB_MGMT_TABLE_DB, mndGetDbMeta);
  mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_DB, mndRetrieveDbs);
  mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_DB, mndCancelGetNextDb);

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  return sdbSetTable(pMnode->pSdb, table);
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}
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void mndCleanupDb(SMnode *pMnode) {}
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static SSdbRaw *mndDbActionEncode(SDbObj *pDb) {
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  terrno = TSDB_CODE_OUT_OF_MEMORY;

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  SSdbRaw *pRaw = sdbAllocRaw(SDB_DB, TSDB_DB_VER_NUMBER, sizeof(SDbObj) + TSDB_DB_RESERVE_SIZE);
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  if (pRaw == NULL) goto DB_ENCODE_OVER;
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  int32_t dataPos = 0;
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  SDB_SET_BINARY(pRaw, dataPos, pDb->name, TSDB_DB_FNAME_LEN, DB_ENCODE_OVER)
  SDB_SET_BINARY(pRaw, dataPos, pDb->acct, TSDB_USER_LEN, DB_ENCODE_OVER)
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  SDB_SET_BINARY(pRaw, dataPos, pDb->createUser, TSDB_USER_LEN, DB_ENCODE_OVER)
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  SDB_SET_INT64(pRaw, dataPos, pDb->createdTime, DB_ENCODE_OVER)
  SDB_SET_INT64(pRaw, dataPos, pDb->updateTime, DB_ENCODE_OVER)
  SDB_SET_INT64(pRaw, dataPos, pDb->uid, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfgVersion, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->vgVersion, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->hashMethod, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.numOfVgroups, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.cacheBlockSize, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.totalBlocks, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysPerFile, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep0, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep1, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.daysToKeep2, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.minRows, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.maxRows, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.commitTime, DB_ENCODE_OVER)
  SDB_SET_INT32(pRaw, dataPos, pDb->cfg.fsyncPeriod, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.walLevel, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.precision, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.compression, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.replications, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.quorum, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.update, DB_ENCODE_OVER)
  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.cacheLastRow, DB_ENCODE_OVER)
  SDB_SET_RESERVE(pRaw, dataPos, TSDB_DB_RESERVE_SIZE, DB_ENCODE_OVER)
  SDB_SET_DATALEN(pRaw, dataPos, DB_ENCODE_OVER)

  terrno = 0;

DB_ENCODE_OVER:
  if (terrno != 0) {
    mError("db:%s, failed to encode to raw:%p since %s", pDb->name, pRaw, terrstr());
    sdbFreeRaw(pRaw);
    return NULL;
  }
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  mTrace("db:%s, encode to raw:%p, row:%p", pDb->name, pRaw, pDb);
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  return pRaw;
}

static SSdbRow *mndDbActionDecode(SSdbRaw *pRaw) {
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  terrno = TSDB_CODE_OUT_OF_MEMORY;

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  int8_t sver = 0;
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  if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto DB_DECODE_OVER;
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  if (sver != TSDB_DB_VER_NUMBER) {
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    terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
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    goto DB_DECODE_OVER;
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  }

  SSdbRow *pRow = sdbAllocRow(sizeof(SDbObj));
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  if (pRow == NULL) goto DB_DECODE_OVER;

  SDbObj *pDb = sdbGetRowObj(pRow);
  if (pDb == NULL) goto DB_DECODE_OVER;
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  int32_t dataPos = 0;
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  SDB_GET_BINARY(pRaw, dataPos, pDb->name, TSDB_DB_FNAME_LEN, DB_DECODE_OVER)
  SDB_GET_BINARY(pRaw, dataPos, pDb->acct, TSDB_USER_LEN, DB_DECODE_OVER)
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  SDB_GET_BINARY(pRaw, dataPos, pDb->createUser, TSDB_USER_LEN, DB_DECODE_OVER)
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  SDB_GET_INT64(pRaw, dataPos, &pDb->createdTime, DB_DECODE_OVER)
  SDB_GET_INT64(pRaw, dataPos, &pDb->updateTime, DB_DECODE_OVER)
  SDB_GET_INT64(pRaw, dataPos, &pDb->uid, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfgVersion, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->vgVersion, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->hashMethod, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.numOfVgroups, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.cacheBlockSize, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.totalBlocks, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysPerFile, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep0, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep1, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.daysToKeep2, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.minRows, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.maxRows, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.commitTime, DB_DECODE_OVER)
  SDB_GET_INT32(pRaw, dataPos, &pDb->cfg.fsyncPeriod, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.walLevel, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.precision, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.compression, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.replications, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.quorum, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.update, DB_DECODE_OVER)
  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.cacheLastRow, DB_DECODE_OVER)
  SDB_GET_RESERVE(pRaw, dataPos, TSDB_DB_RESERVE_SIZE, DB_DECODE_OVER)

  terrno = 0;

DB_DECODE_OVER:
  if (terrno != 0) {
    mError("db:%s, failed to decode from raw:%p since %s", pDb->name, pRaw, terrstr());
    tfree(pRow);
    return NULL;
  }
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  mTrace("db:%s, decode from raw:%p, row:%p", pDb->name, pRaw, pDb);
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  return pRow;
}

static int32_t mndDbActionInsert(SSdb *pSdb, SDbObj *pDb) {
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  mTrace("db:%s, perform insert action, row:%p", pDb->name, pDb);
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  return 0;
}

static int32_t mndDbActionDelete(SSdb *pSdb, SDbObj *pDb) {
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  mTrace("db:%s, perform delete action, row:%p", pDb->name, pDb);
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  return 0;
}

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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);
  pOld->updateTime = pNew->updateTime;
  pOld->cfgVersion = pNew->cfgVersion;
  pOld->vgVersion = pNew->vgVersion;
  memcpy(&pOld->cfg, &pNew->cfg, sizeof(SDbCfg));
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  return 0;
}

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SDbObj *mndAcquireDb(SMnode *pMnode, const char *db) {
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  SSdb   *pSdb = pMnode->pSdb;
  SDbObj *pDb = sdbAcquire(pSdb, SDB_DB, db);
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  if (pDb == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {
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    terrno = TSDB_CODE_MND_DB_NOT_EXIST;
  }
  return pDb;
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}
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void mndReleaseDb(SMnode *pMnode, SDbObj *pDb) {
  SSdb *pSdb = pMnode->pSdb;
  sdbRelease(pSdb, pDb);
}

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static int32_t mndCheckDbName(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;
}

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static int32_t mndCheckDbCfg(SMnode *pMnode, SDbCfg *pCfg) {
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  if (pCfg->numOfVgroups < TSDB_MIN_VNODES_PER_DB || pCfg->numOfVgroups > TSDB_MAX_VNODES_PER_DB) return -1;
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  if (pCfg->cacheBlockSize < TSDB_MIN_CACHE_BLOCK_SIZE || pCfg->cacheBlockSize > TSDB_MAX_CACHE_BLOCK_SIZE) return -1;
  if (pCfg->totalBlocks < TSDB_MIN_TOTAL_BLOCKS || pCfg->totalBlocks > TSDB_MAX_TOTAL_BLOCKS) 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;
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  if (pCfg->daysToKeep0 < pCfg->daysPerFile) return -1;
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  if (pCfg->daysToKeep0 > pCfg->daysToKeep1) return -1;
  if (pCfg->daysToKeep1 > pCfg->daysToKeep2) return -1;
  if (pCfg->minRows < TSDB_MIN_MIN_ROW_FBLOCK || pCfg->minRows > TSDB_MAX_MIN_ROW_FBLOCK) return -1;
  if (pCfg->maxRows < TSDB_MIN_MAX_ROW_FBLOCK || pCfg->maxRows > TSDB_MAX_MAX_ROW_FBLOCK) return -1;
  if (pCfg->minRows > pCfg->maxRows) return -1;
  if (pCfg->commitTime < TSDB_MIN_COMMIT_TIME || pCfg->commitTime > TSDB_MAX_COMMIT_TIME) 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_OPTION || pCfg->replications > TSDB_MAX_DB_REPLICA_OPTION) return -1;
  if (pCfg->replications > mndGetDnodeSize(pMnode)) return -1;
  if (pCfg->quorum < TSDB_MIN_DB_QUORUM_OPTION || pCfg->quorum > TSDB_MAX_DB_QUORUM_OPTION) return -1;
  if (pCfg->quorum > pCfg->replications) return -1;
  if (pCfg->update < TSDB_MIN_DB_UPDATE || pCfg->update > TSDB_MAX_DB_UPDATE) return -1;
  if (pCfg->cacheLastRow < TSDB_MIN_DB_CACHE_LAST_ROW || pCfg->cacheLastRow > TSDB_MAX_DB_CACHE_LAST_ROW) return -1;
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  return TSDB_CODE_SUCCESS;
}

static void mndSetDefaultDbCfg(SDbCfg *pCfg) {
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  if (pCfg->numOfVgroups < 0) pCfg->numOfVgroups = TSDB_DEFAULT_VN_PER_DB;
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  if (pCfg->cacheBlockSize < 0) pCfg->cacheBlockSize = TSDB_DEFAULT_CACHE_BLOCK_SIZE;
  if (pCfg->totalBlocks < 0) pCfg->totalBlocks = TSDB_DEFAULT_TOTAL_BLOCKS;
  if (pCfg->daysPerFile < 0) pCfg->daysPerFile = TSDB_DEFAULT_DAYS_PER_FILE;
  if (pCfg->daysToKeep0 < 0) pCfg->daysToKeep0 = TSDB_DEFAULT_KEEP;
  if (pCfg->daysToKeep1 < 0) pCfg->daysToKeep1 = TSDB_DEFAULT_KEEP;
  if (pCfg->daysToKeep2 < 0) pCfg->daysToKeep2 = TSDB_DEFAULT_KEEP;
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  if (pCfg->minRows < 0) pCfg->minRows = TSDB_DEFAULT_MIN_ROW_FBLOCK;
  if (pCfg->maxRows < 0) pCfg->maxRows = TSDB_DEFAULT_MAX_ROW_FBLOCK;
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  if (pCfg->commitTime < 0) pCfg->commitTime = TSDB_DEFAULT_COMMIT_TIME;
  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_OPTION;
  if (pCfg->quorum < 0) pCfg->quorum = TSDB_DEFAULT_DB_QUORUM_OPTION;
  if (pCfg->update < 0) pCfg->update = TSDB_DEFAULT_DB_UPDATE_OPTION;
  if (pCfg->cacheLastRow < 0) pCfg->cacheLastRow = TSDB_DEFAULT_CACHE_LAST_ROW;
}
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static int32_t mndSetCreateDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
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  SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
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  if (pDbRaw == NULL) return -1;
  if (mndTransAppendRedolog(pTrans, pDbRaw) != 0) return -1;
  if (sdbSetRawStatus(pDbRaw, SDB_STATUS_CREATING) != 0) return -1;
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  for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
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    SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
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    if (pVgRaw == NULL) return -1;
    if (mndTransAppendRedolog(pTrans, pVgRaw) != 0) return -1;
    if (sdbSetRawStatus(pVgRaw, SDB_STATUS_CREATING) != 0) return -1;
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  }

  return 0;
}

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static int32_t mndSetCreateDbUndoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
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  SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
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  if (pDbRaw == NULL) return -1;
  if (mndTransAppendUndolog(pTrans, pDbRaw) != 0) return -1;
  if (sdbSetRawStatus(pDbRaw, SDB_STATUS_DROPPED) != 0) return -1;
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  for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
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    SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
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    if (pVgRaw == NULL) return -1;
    if (mndTransAppendUndolog(pTrans, pVgRaw) != 0) return -1;
    if (sdbSetRawStatus(pVgRaw, SDB_STATUS_DROPPED) != 0) return -1;
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  }

  return 0;
}

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static int32_t mndSetCreateDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
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  SSdbRaw *pDbRaw = mndDbActionEncode(pDb);
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  if (pDbRaw == NULL) return -1;
  if (mndTransAppendCommitlog(pTrans, pDbRaw) != 0) return -1;
  if (sdbSetRawStatus(pDbRaw, SDB_STATUS_READY) != 0) return -1;
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  for (int32_t v = 0; v < pDb->cfg.numOfVgroups; ++v) {
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    SSdbRaw *pVgRaw = mndVgroupActionEncode(pVgroups + v);
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    if (pVgRaw == NULL) return -1;
    if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) return -1;
    if (sdbSetRawStatus(pVgRaw, SDB_STATUS_READY) != 0) return -1;
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  }

  return 0;
}

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static int32_t mndSetCreateDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
  for (int32_t vg = 0; vg < pDb->cfg.numOfVgroups; ++vg) {
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    SVgObj *pVgroup = pVgroups + vg;
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    for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
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      STransAction action = {0};
      SVnodeGid   *pVgid = pVgroup->vnodeGid + vn;
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      SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
      if (pDnode == NULL) return -1;
      action.epSet = mndGetDnodeEpset(pDnode);
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      mndReleaseDnode(pMnode, pDnode);

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      int32_t contLen = 0;
      void   *pReq = mndBuildCreateVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
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      if (pReq == NULL) return -1;
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      action.pCont = pReq;
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      action.contLen = contLen;
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      action.msgType = TDMT_DND_CREATE_VNODE;
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      action.acceptableCode = TSDB_CODE_DND_VNODE_ALREADY_DEPLOYED;
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      if (mndTransAppendRedoAction(pTrans, &action) != 0) {
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        free(pReq);
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        return -1;
      }
    }
  }

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  return 0;
}

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static int32_t mndSetCreateDbUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
  for (int32_t vg = 0; vg < pDb->cfg.numOfVgroups; ++vg) {
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    SVgObj *pVgroup = pVgroups + vg;
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    for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
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      STransAction action = {0};
      SVnodeGid   *pVgid = pVgroup->vnodeGid + vn;
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      SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
      if (pDnode == NULL) return -1;
      action.epSet = mndGetDnodeEpset(pDnode);
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      mndReleaseDnode(pMnode, pDnode);

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      int32_t contLen = 0;
      void   *pReq = mndBuildDropVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
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      if (pReq == NULL) return -1;
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      action.pCont = pReq;
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      action.contLen = contLen;
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      action.msgType = TDMT_DND_DROP_VNODE;
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      action.acceptableCode = TSDB_CODE_DND_VNODE_NOT_DEPLOYED;
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      if (mndTransAppendUndoAction(pTrans, &action) != 0) {
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        free(pReq);
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        return -1;
      }
    }
  }

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  return 0;
}

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static int32_t mndCreateDb(SMnode *pMnode, SMnodeMsg *pReq, SCreateDbReq *pCreate, SUserObj *pUser) {
S
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  SDbObj dbObj = {0};
389
  memcpy(dbObj.name, pCreate->db, TSDB_DB_FNAME_LEN);
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  memcpy(dbObj.acct, pUser->acct, TSDB_USER_LEN);
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  dbObj.createdTime = taosGetTimestampMs();
  dbObj.updateTime = dbObj.createdTime;
393
  dbObj.uid = mndGenerateUid(dbObj.name, TSDB_DB_FNAME_LEN);
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  dbObj.cfgVersion = 1;
  dbObj.vgVersion = 1;
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  dbObj.hashMethod = 1;
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  memcpy(dbObj.createUser, pUser->user, TSDB_USER_LEN);
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  dbObj.cfg = (SDbCfg){
      .numOfVgroups = pCreate->numOfVgroups,
      .cacheBlockSize = pCreate->cacheBlockSize,
      .totalBlocks = pCreate->totalBlocks,
      .daysPerFile = pCreate->daysPerFile,
      .daysToKeep0 = pCreate->daysToKeep0,
      .daysToKeep1 = pCreate->daysToKeep1,
      .daysToKeep2 = pCreate->daysToKeep2,
      .minRows = pCreate->minRows,
      .maxRows = pCreate->maxRows,
      .fsyncPeriod = pCreate->fsyncPeriod,
      .commitTime = pCreate->commitTime,
      .precision = pCreate->precision,
      .compression = pCreate->compression,
      .walLevel = pCreate->walLevel,
      .replications = pCreate->replications,
      .quorum = pCreate->quorum,
      .update = pCreate->update,
      .cacheLastRow = pCreate->cacheLastRow,
      .streamMode = pCreate->streamMode,
  };
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  mndSetDefaultDbCfg(&dbObj.cfg);

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  if (mndCheckDbName(dbObj.name, pUser) != 0) {
    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
    return -1;
  }

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  if (mndCheckDbCfg(pMnode, &dbObj.cfg) != 0) {
    terrno = TSDB_CODE_MND_INVALID_DB_OPTION;
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    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
    return -1;
  }
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  SVgObj *pVgroups = NULL;
  if (mndAllocVgroup(pMnode, &dbObj, &pVgroups) != 0) {
435 436 437 438
    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
    return -1;
  }

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  int32_t code = -1;
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  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_TYPE_CREATE_DB, &pReq->rpcMsg);
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  if (pTrans == NULL) goto CREATE_DB_OVER;
S
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  mDebug("trans:%d, used to create db:%s", pTrans->id, pCreate->db);

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  mndTransSetDbInfo(pTrans, &dbObj);
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  if (mndSetCreateDbRedoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto CREATE_DB_OVER;
  if (mndSetCreateDbUndoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto CREATE_DB_OVER;
  if (mndSetCreateDbCommitLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto CREATE_DB_OVER;
  if (mndSetCreateDbRedoActions(pMnode, pTrans, &dbObj, pVgroups) != 0) goto CREATE_DB_OVER;
  if (mndSetCreateDbUndoActions(pMnode, pTrans, &dbObj, pVgroups) != 0) goto CREATE_DB_OVER;
  if (mndTransPrepare(pMnode, pTrans) != 0) goto CREATE_DB_OVER;
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  code = 0;

CREATE_DB_OVER:
  free(pVgroups);
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  mndTransDrop(pTrans);
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  return code;
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}

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static int32_t mndProcessCreateDbReq(SMnodeMsg *pReq) {
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  SMnode      *pMnode = pReq->pMnode;
  int32_t      code = -1;
  SDbObj      *pDb = NULL;
  SUserObj    *pUser = NULL;
  SCreateDbReq createReq = {0};

  if (tDeserializeSCreateDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &createReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto CREATE_DB_OVER;
  }

  mDebug("db:%s, start to create, vgroups:%d", createReq.db, createReq.numOfVgroups);

  pDb = mndAcquireDb(pMnode, createReq.db);
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  if (pDb != NULL) {
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    if (createReq.ignoreExist) {
      mDebug("db:%s, already exist, ignore exist is set", createReq.db);
      code = 0;
      goto CREATE_DB_OVER;
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    } else {
      terrno = TSDB_CODE_MND_DB_ALREADY_EXIST;
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      goto CREATE_DB_OVER;
S
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    }
S
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485
  } else if (terrno != TSDB_CODE_MND_DB_NOT_EXIST) {
S
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    goto CREATE_DB_OVER;
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  }

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  pUser = mndAcquireUser(pMnode, pReq->user);
  if (pUser == NULL) {
    goto CREATE_DB_OVER;
  }

  if (mndCheckCreateDbAuth(pUser) != 0) {
    goto CREATE_DB_OVER;
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  }

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  code = mndCreateDb(pMnode, pReq, &createReq, pUser);
  if (code == 0) code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
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CREATE_DB_OVER:
  if (code != 0 && code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
    mError("db:%s, failed to create since %s", createReq.db, terrstr());
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  }

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  mndReleaseDb(pMnode, pDb);
  mndReleaseUser(pMnode, pUser);

  return code;
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}

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static int32_t mndSetDbCfgFromAlterDbReq(SDbObj *pDb, SAlterDbReq *pAlter) {
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  terrno = TSDB_CODE_MND_DB_OPTION_UNCHANGED;
S
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  if (pAlter->totalBlocks >= 0 && pAlter->totalBlocks != pDb->cfg.totalBlocks) {
    pDb->cfg.totalBlocks = pAlter->totalBlocks;
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    terrno = 0;
S
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  }

  if (pAlter->daysToKeep0 >= 0 && pAlter->daysToKeep0 != pDb->cfg.daysToKeep0) {
    pDb->cfg.daysToKeep0 = pAlter->daysToKeep0;
S
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    terrno = 0;
S
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  }

  if (pAlter->daysToKeep1 >= 0 && pAlter->daysToKeep1 != pDb->cfg.daysToKeep1) {
    pDb->cfg.daysToKeep1 = pAlter->daysToKeep1;
S
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    terrno = 0;
S
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  }

  if (pAlter->daysToKeep2 >= 0 && pAlter->daysToKeep2 != pDb->cfg.daysToKeep2) {
    pDb->cfg.daysToKeep2 = pAlter->daysToKeep2;
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    terrno = 0;
S
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  }

  if (pAlter->fsyncPeriod >= 0 && pAlter->fsyncPeriod != pDb->cfg.fsyncPeriod) {
    pDb->cfg.fsyncPeriod = pAlter->fsyncPeriod;
S
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537
    terrno = 0;
S
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  }

  if (pAlter->walLevel >= 0 && pAlter->walLevel != pDb->cfg.walLevel) {
    pDb->cfg.walLevel = pAlter->walLevel;
S
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    terrno = 0;
S
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  }

  if (pAlter->quorum >= 0 && pAlter->quorum != pDb->cfg.quorum) {
    pDb->cfg.quorum = pAlter->quorum;
S
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547
    terrno = 0;
S
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548 549 550 551
  }

  if (pAlter->cacheLastRow >= 0 && pAlter->cacheLastRow != pDb->cfg.cacheLastRow) {
    pDb->cfg.cacheLastRow = pAlter->cacheLastRow;
S
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    terrno = 0;
S
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  }

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  return terrno;
}

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static int32_t mndSetUpdateDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
  SSdbRaw *pRedoRaw = mndDbActionEncode(pOld);
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  if (pRedoRaw == NULL) return -1;
  if (mndTransAppendRedolog(pTrans, pRedoRaw) != 0) return -1;
  if (sdbSetRawStatus(pRedoRaw, SDB_STATUS_UPDATING) != 0) return -1;

  return 0;
}

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static int32_t mndSetUpdateDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
  SSdbRaw *pCommitRaw = mndDbActionEncode(pNew);
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  if (pCommitRaw == NULL) return -1;
  if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
  if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY) != 0) return -1;
S
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  return 0;
}

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static int32_t mndBuildUpdateVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup) {
  for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
    STransAction action = {0};
    SVnodeGid   *pVgid = pVgroup->vnodeGid + vn;

    SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
    if (pDnode == NULL) return -1;
    action.epSet = mndGetDnodeEpset(pDnode);
    mndReleaseDnode(pMnode, pDnode);

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    int32_t contLen = 0;
    void   *pReq = mndBuildCreateVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
S
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    if (pReq == NULL) return -1;
S
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589

S
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    action.pCont = pReq;
S
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    action.contLen = contLen;
H
Hongze Cheng 已提交
592
    action.msgType = TDMT_DND_ALTER_VNODE;
S
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593
    if (mndTransAppendRedoAction(pTrans, &action) != 0) {
S
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594
      free(pReq);
S
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595 596 597
      return -1;
    }
  }
S
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  return 0;
}

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static int32_t mndSetUpdateDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
S
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  SSdb *pSdb = pMnode->pSdb;
  void *pIter = NULL;
S
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605

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  while (1) {
    SVgObj *pVgroup = NULL;
    pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
    if (pIter == NULL) break;
S
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    if (pVgroup->dbUid == pNew->uid) {
      if (mndBuildUpdateVgroupAction(pMnode, pTrans, pNew, pVgroup) != 0) {
S
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613 614 615 616 617 618 619 620 621 622 623
        sdbCancelFetch(pSdb, pIter);
        sdbRelease(pSdb, pVgroup);
        return -1;
      }
    }

    sdbRelease(pSdb, pVgroup);
  }

  return 0;
}
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624

S
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static int32_t mndUpdateDb(SMnode *pMnode, SMnodeMsg *pReq, SDbObj *pOld, SDbObj *pNew) {
S
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626
  int32_t code = -1;
S
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627
  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_TYPE_ALTER_DB, &pReq->rpcMsg);
S
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628
  if (pTrans == NULL) goto UPDATE_DB_OVER;
S
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629

S
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630
  mDebug("trans:%d, used to update db:%s", pTrans->id, pOld->name);
S
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631

S
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632
  mndTransSetDbInfo(pTrans, pOld);
S
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633 634 635 636
  if (mndSetUpdateDbRedoLogs(pMnode, pTrans, pOld, pNew) != 0) goto UPDATE_DB_OVER;
  if (mndSetUpdateDbCommitLogs(pMnode, pTrans, pOld, pNew) != 0) goto UPDATE_DB_OVER;
  if (mndSetUpdateDbRedoActions(pMnode, pTrans, pOld, pNew) != 0) goto UPDATE_DB_OVER;
  if (mndTransPrepare(pMnode, pTrans) != 0) goto UPDATE_DB_OVER;
S
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637

S
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638 639 640
  code = 0;

UPDATE_DB_OVER:
S
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641
  mndTransDrop(pTrans);
S
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642
  return code;
S
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643 644
}

S
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645
static int32_t mndProcessAlterDbReq(SMnodeMsg *pReq) {
S
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646 647 648 649 650 651 652 653 654 655
  SMnode     *pMnode = pReq->pMnode;
  int32_t     code = -1;
  SDbObj     *pDb = NULL;
  SUserObj   *pUser = NULL;
  SAlterDbReq alterReq = {0};

  if (tDeserializeSAlterDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &alterReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto ALTER_DB_OVER;
  }
S
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656

S
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657
  mDebug("db:%s, start to alter", alterReq.db);
S
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658

S
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659
  pDb = mndAcquireDb(pMnode, alterReq.db);
S
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  if (pDb == NULL) {
S
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661 662 663 664 665 666 667 668 669 670 671
    terrno = TSDB_CODE_MND_DB_NOT_EXIST;
    goto ALTER_DB_OVER;
  }

  pUser = mndAcquireUser(pMnode, pReq->user);
  if (pUser == NULL) {
    goto ALTER_DB_OVER;
  }

  if (mndCheckAlterDropCompactSyncDbAuth(pUser, pDb) != 0) {
    goto ALTER_DB_OVER;
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672 673 674 675 676
  }

  SDbObj dbObj = {0};
  memcpy(&dbObj, pDb, sizeof(SDbObj));

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  code = mndSetDbCfgFromAlterDbReq(&dbObj, &alterReq);
S
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  if (code != 0) {
S
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679
    goto ALTER_DB_OVER;
S
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680 681
  }

S
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682 683
  dbObj.cfgVersion++;
  dbObj.updateTime = taosGetTimestampMs();
S
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  code = mndUpdateDb(pMnode, pReq, pDb, &dbObj);
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685
  if (code == 0) code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
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ALTER_DB_OVER:
  if (code != 0 && code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
    mError("db:%s, failed to alter since %s", alterReq.db, terrstr());
S
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690 691
  }

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692 693 694 695
  mndReleaseDb(pMnode, pDb);
  mndReleaseUser(pMnode, pUser);

  return code;
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}

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698 699 700 701 702 703 704 705 706 707 708 709 710 711 712
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;

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  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);
  }

734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
  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);
  }

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  return 0;
}

static int32_t mndBuildDropVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup) {
  for (int32_t vn = 0; vn < pVgroup->replica; ++vn) {
    STransAction action = {0};
S
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758
    SVnodeGid   *pVgid = pVgroup->vnodeGid + vn;
S
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759 760 761 762 763 764

    SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
    if (pDnode == NULL) return -1;
    action.epSet = mndGetDnodeEpset(pDnode);
    mndReleaseDnode(pMnode, pDnode);

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    int32_t contLen = 0;
    void   *pReq = mndBuildDropVnodeReq(pMnode, pDnode, pDb, pVgroup, &contLen);
S
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    if (pReq == NULL) return -1;
S
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768

S
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769
    action.pCont = pReq;
S
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    action.contLen = contLen;
H
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    action.msgType = TDMT_DND_DROP_VNODE;
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    action.acceptableCode = TSDB_CODE_DND_VNODE_NOT_DEPLOYED;
S
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    if (mndTransAppendRedoAction(pTrans, &action) != 0) {
S
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      free(pReq);
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775 776 777 778
      return -1;
    }
  }

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  return 0;
}

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static int32_t mndSetDropDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
  SSdb *pSdb = pMnode->pSdb;
  void *pIter = NULL;
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786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803
  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;
}
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S
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static int32_t mndDropDb(SMnode *pMnode, SMnodeMsg *pReq, SDbObj *pDb) {
S
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  int32_t code = -1;
S
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807
  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_TYPE_DROP_DB, &pReq->rpcMsg);
S
Shengliang Guan 已提交
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  if (pTrans == NULL) goto DROP_DB_OVER;
S
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809

S
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810
  mDebug("trans:%d, used to drop db:%s", pTrans->id, pDb->name);
S
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811
  mndTransSetDbInfo(pTrans, pDb);
S
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812

S
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813 814 815
  if (mndSetDropDbRedoLogs(pMnode, pTrans, pDb) != 0) goto DROP_DB_OVER;
  if (mndSetDropDbCommitLogs(pMnode, pTrans, pDb) != 0) goto DROP_DB_OVER;
  if (mndSetDropDbRedoActions(pMnode, pTrans, pDb) != 0) goto DROP_DB_OVER;
S
Shengliang Guan 已提交
816

S
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817 818 819 820 821 822 823 824 825 826 827 828
  SDropDbRsp dropRsp = {0};
  memcpy(dropRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
  dropRsp.uid = pDb->uid;

  int32_t rspLen = tSerializeSDropDbRsp(NULL, 0, &dropRsp);
  void   *pRsp = malloc(rspLen);
  if (pRsp == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    goto DROP_DB_OVER;
  }
  tSerializeSDropDbRsp(pRsp, rspLen, &dropRsp);

S
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829 830
  mndTransSetRpcRsp(pTrans, pRsp, rspLen);

S
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831
  if (mndTransPrepare(pMnode, pTrans) != 0) goto DROP_DB_OVER;
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832

S
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833 834 835
  code = 0;

DROP_DB_OVER:
S
Shengliang Guan 已提交
836
  mndTransDrop(pTrans);
S
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837
  return code;
S
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}

S
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840
static int32_t mndProcessDropDbReq(SMnodeMsg *pReq) {
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841 842 843 844 845 846 847 848 849 850
  SMnode    *pMnode = pReq->pMnode;
  int32_t    code = -1;
  SDbObj    *pDb = NULL;
  SUserObj  *pUser = NULL;
  SDropDbReq dropReq = {0};

  if (tDeserializeSDropDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &dropReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto DROP_DB_OVER;
  }
S
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851

S
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852
  mDebug("db:%s, start to drop", dropReq.db);
S
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853

S
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854
  pDb = mndAcquireDb(pMnode, dropReq.db);
S
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855
  if (pDb == NULL) {
S
Shengliang Guan 已提交
856 857 858
    if (dropReq.ignoreNotExists) {
      code = 0;
      goto DROP_DB_OVER;
S
Shengliang Guan 已提交
859 860
    } else {
      terrno = TSDB_CODE_MND_DB_NOT_EXIST;
S
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861
      goto DROP_DB_OVER;
S
Shengliang Guan 已提交
862 863 864
    }
  }

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865 866 867 868
  pUser = mndAcquireUser(pMnode, pReq->user);
  if (pUser == NULL) {
    goto DROP_DB_OVER;
  }
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869

S
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  if (mndCheckAlterDropCompactSyncDbAuth(pUser, pDb) != 0) {
    goto DROP_DB_OVER;
S
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872 873
  }

S
Shengliang Guan 已提交
874 875 876 877 878 879 880 881 882 883 884 885
  code = mndDropDb(pMnode, pReq, pDb);
  if (code == 0) code = TSDB_CODE_MND_ACTION_IN_PROGRESS;

DROP_DB_OVER:
  if (code != 0 && code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
    mError("db:%s, failed to drop since %s", dropReq.db, terrstr());
  }

  mndReleaseDb(pMnode, pDb);
  mndReleaseUser(pMnode, pUser);

  return code;
S
Shengliang Guan 已提交
886
}
S
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887

S
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static void mndBuildDBVgroupInfo(SDbObj *pDb, SMnode *pMnode, SArray *pVgList) {
D
dapan1121 已提交
889
  int32_t vindex = 0;
S
Shengliang Guan 已提交
890
  SSdb   *pSdb = pMnode->pSdb;
D
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891 892 893 894 895 896 897 898

  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) {
S
Shengliang Guan 已提交
899 900 901 902 903
      SVgroupInfo vgInfo = {0};
      vgInfo.vgId = pVgroup->vgId;
      vgInfo.hashBegin = pVgroup->hashBegin;
      vgInfo.hashEnd = pVgroup->hashEnd;
      vgInfo.epset.numOfEps = pVgroup->replica;
D
dapan1121 已提交
904
      for (int32_t gid = 0; gid < pVgroup->replica; ++gid) {
S
Shengliang Guan 已提交
905
        SVnodeGid *pVgid = &pVgroup->vnodeGid[gid];
S
Shengliang Guan 已提交
906
        SEp       *pEp = &vgInfo.epset.eps[gid];
S
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907
        SDnodeObj *pDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
D
dapan1121 已提交
908
        if (pDnode != NULL) {
909
          memcpy(pEp->fqdn, pDnode->fqdn, TSDB_FQDN_LEN);
S
Shengliang Guan 已提交
910
          pEp->port = pDnode->port;
D
dapan1121 已提交
911 912 913
        }
        mndReleaseDnode(pMnode, pDnode);
        if (pVgid->role == TAOS_SYNC_STATE_LEADER) {
S
Shengliang Guan 已提交
914
          vgInfo.epset.inUse = gid;
D
dapan1121 已提交
915 916 917
        }
      }
      vindex++;
S
Shengliang Guan 已提交
918
      taosArrayPush(pVgList, &vgInfo);
D
dapan1121 已提交
919 920 921 922
    }

    sdbRelease(pSdb, pVgroup);
  }
S
Shengliang Guan 已提交
923 924

  sdbCancelFetch(pSdb, pIter);
D
dapan1121 已提交
925 926
}

S
Shengliang Guan 已提交
927
static int32_t mndProcessUseDbReq(SMnodeMsg *pReq) {
S
Shengliang Guan 已提交
928 929 930 931 932 933 934 935 936 937 938
  SMnode   *pMnode = pReq->pMnode;
  int32_t   code = -1;
  SDbObj   *pDb = NULL;
  SUserObj *pUser = NULL;
  SUseDbReq usedbReq = {0};
  SUseDbRsp usedbRsp = {0};

  if (tDeserializeSUseDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &usedbReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto USE_DB_OVER;
  }
S
Shengliang Guan 已提交
939

D
dapan1121 已提交
940 941
  char *p = strchr(usedbReq.db, '.');
  if (p && 0 == strcmp(p + 1, TSDB_INFORMATION_SCHEMA_DB)) {
D
dapan1121 已提交
942 943 944 945 946 947 948
    memcpy(usedbRsp.db, usedbReq.db, TSDB_DB_FNAME_LEN);
  } else {
    pDb = mndAcquireDb(pMnode, usedbReq.db);
    if (pDb == NULL) {
      terrno = TSDB_CODE_MND_DB_NOT_EXIST;
      goto USE_DB_OVER;
    }
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Shengliang Guan 已提交
949

D
dapan1121 已提交
950 951 952 953
    pUser = mndAcquireUser(pMnode, pReq->user);
    if (pUser == NULL) {
      goto USE_DB_OVER;
    }
S
Shengliang Guan 已提交
954

D
dapan1121 已提交
955 956 957
    if (mndCheckUseDbAuth(pUser, pDb) != 0) {
      goto USE_DB_OVER;
    }
S
Shengliang Guan 已提交
958

D
dapan1121 已提交
959 960 961 962 963
    usedbRsp.pVgroupInfos = taosArrayInit(pDb->cfg.numOfVgroups, sizeof(SVgroupInfo));
    if (usedbRsp.pVgroupInfos == NULL) {
      terrno = TSDB_CODE_OUT_OF_MEMORY;
      goto USE_DB_OVER;
    }
S
Shengliang Guan 已提交
964

D
dapan1121 已提交
965 966 967
    if (usedbReq.vgVersion < pDb->vgVersion) {
      mndBuildDBVgroupInfo(pDb, pMnode, usedbRsp.pVgroupInfos);
    }
S
Shengliang Guan 已提交
968

D
dapan1121 已提交
969 970 971 972 973 974
    memcpy(usedbRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
    usedbRsp.uid = pDb->uid;
    usedbRsp.vgVersion = pDb->vgVersion;
    usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);
    usedbRsp.hashMethod = pDb->hashMethod;
  }
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975

S
Shengliang Guan 已提交
976 977 978 979 980
  int32_t contLen = tSerializeSUseDbRsp(NULL, 0, &usedbRsp);
  void   *pRsp = rpcMallocCont(contLen);
  if (pRsp == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    goto USE_DB_OVER;
S
Shengliang Guan 已提交
981 982
  }

S
Shengliang Guan 已提交
983
  tSerializeSUseDbRsp(pRsp, contLen, &usedbRsp);
S
Shengliang Guan 已提交
984

S
Shengliang Guan 已提交
985 986
  pReq->pCont = pRsp;
  pReq->contLen = contLen;
S
Shengliang Guan 已提交
987
  code = 0;
S
Shengliang Guan 已提交
988

S
Shengliang Guan 已提交
989 990 991 992
USE_DB_OVER:
  if (code != 0) {
    mError("db:%s, failed to process use db req since %s", usedbReq.db, terrstr());
  }
D
dapan1121 已提交
993

S
Shengliang Guan 已提交
994 995 996
  mndReleaseDb(pMnode, pDb);
  mndReleaseUser(pMnode, pUser);
  tFreeSUsedbRsp(&usedbRsp);
D
dapan1121 已提交
997

S
Shengliang Guan 已提交
998 999
  return code;
}
S
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S
Shengliang Guan 已提交
1001 1002 1003 1004 1005 1006 1007
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;
  }
S
Shengliang Guan 已提交
1008

S
Shengliang Guan 已提交
1009 1010 1011 1012
  for (int32_t i = 0; i < numOfDbs; ++i) {
    SDbVgVersion *pDbVgVersion = &pDbs[i];
    pDbVgVersion->dbId = htobe64(pDbVgVersion->dbId);
    pDbVgVersion->vgVersion = htonl(pDbVgVersion->vgVersion);
D
dapan1121 已提交
1013

S
Shengliang Guan 已提交
1014 1015
    SUseDbRsp usedbRsp = {0};

S
Shengliang Guan 已提交
1016
    SDbObj *pDb = mndAcquireDb(pMnode, pDbVgVersion->dbFName);
S
Shengliang Guan 已提交
1017 1018 1019 1020 1021 1022 1023 1024
    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);
    } else if (pDbVgVersion->vgVersion >= pDb->vgVersion) {
      mDebug("db:%s, version not changed", pDbVgVersion->dbFName);
D
dapan1121 已提交
1025 1026
      mndReleaseDb(pMnode, pDb);
      continue;
S
Shengliang Guan 已提交
1027 1028 1029 1030 1031 1032 1033
    } else {
      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;
      }
S
Shengliang Guan 已提交
1034

S
Shengliang Guan 已提交
1035 1036 1037 1038 1039 1040 1041 1042
      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->hashMethod;

      taosArrayPush(batchUseRsp.pArray, &usedbRsp);
S
Shengliang Guan 已提交
1043
      mndReleaseDb(pMnode, pDb);
D
dapan1121 已提交
1044 1045 1046
    }
  }

S
Shengliang Guan 已提交
1047 1048 1049 1050 1051 1052
  int32_t rspLen = tSerializeSUseDbBatchRsp(NULL, 0, &batchUseRsp);
  void   *pRsp = malloc(rspLen);
  if (pRsp == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    tFreeSUseDbBatchRsp(&batchUseRsp);
    return -1;
D
dapan1121 已提交
1053
  }
S
Shengliang Guan 已提交
1054
  tSerializeSUseDbBatchRsp(pRsp, rspLen, &batchUseRsp);
D
dapan1121 已提交
1055

S
Shengliang Guan 已提交
1056 1057 1058 1059
  *ppRsp = pRsp;
  *pRspLen = rspLen;

  tFreeSUseDbBatchRsp(&batchUseRsp);
D
dapan1121 已提交
1060 1061 1062
  return 0;
}

S
Shengliang Guan 已提交
1063
static int32_t mndProcessSyncDbReq(SMnodeMsg *pReq) {
S
Shengliang Guan 已提交
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
  SMnode    *pMnode = pReq->pMnode;
  int32_t    code = -1;
  SDbObj    *pDb = NULL;
  SUserObj  *pUser = NULL;
  SSyncDbReq syncReq = {0};

  if (tDeserializeSSyncDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &syncReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto SYNC_DB_OVER;
  }

  mDebug("db:%s, start to sync", syncReq.db);

  pDb = mndAcquireDb(pMnode, syncReq.db);
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  if (pDb == NULL) {
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    goto SYNC_DB_OVER;
  }

  pUser = mndAcquireUser(pMnode, pReq->user);
  if (pUser == NULL) {
    goto SYNC_DB_OVER;
  }

  if (mndCheckAlterDropCompactSyncDbAuth(pUser, pDb) != 0) {
    goto SYNC_DB_OVER;
  }

  // code = mndSyncDb();

SYNC_DB_OVER:
  if (code != 0) {
    mError("db:%s, failed to process sync db req since %s", syncReq.db, terrstr());
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  }
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  mndReleaseDb(pMnode, pDb);
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  mndReleaseUser(pMnode, pUser);

  return code;
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}

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static int32_t mndProcessCompactDbReq(SMnodeMsg *pReq) {
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  SMnode       *pMnode = pReq->pMnode;
  int32_t       code = -1;
  SDbObj       *pDb = NULL;
  SUserObj     *pUser = NULL;
  SCompactDbReq compactReq = {0};

  if (tDeserializeSSyncDbReq(pReq->rpcMsg.pCont, pReq->rpcMsg.contLen, &compactReq) != 0) {
    terrno = TSDB_CODE_INVALID_MSG;
    goto SYNC_DB_OVER;
  }

  mDebug("db:%s, start to sync", compactReq.db);

  pDb = mndAcquireDb(pMnode, compactReq.db);
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  if (pDb == NULL) {
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    goto SYNC_DB_OVER;
  }

  pUser = mndAcquireUser(pMnode, pReq->user);
  if (pUser == NULL) {
    goto SYNC_DB_OVER;
  }

  if (mndCheckAlterDropCompactSyncDbAuth(pUser, pDb) != 0) {
    goto SYNC_DB_OVER;
  }

  // code = mndSyncDb();

SYNC_DB_OVER:
  if (code != 0) {
    mError("db:%s, failed to process compact db req since %s", compactReq.db, terrstr());
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  }
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  mndReleaseDb(pMnode, pDb);
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  mndReleaseUser(pMnode, pUser);

  return code;
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}
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static int32_t mndGetDbMeta(SMnodeMsg *pReq, SShowObj *pShow, STableMetaRsp *pMeta) {
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  SMnode *pMnode = pReq->pMnode;
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  SSdb   *pSdb = pMnode->pSdb;

  int32_t  cols = 0;
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  SSchema *pSchema = pMeta->pSchemas;
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  pShow->bytes[cols] = (TSDB_DB_NAME_LEN - 1) + VARSTR_HEADER_SIZE;
  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
  strcpy(pSchema[cols].name, "name");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 8;
  pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
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  strcpy(pSchema[cols].name, "create_time");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

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  pShow->bytes[cols] = 2;
  pSchema[cols].type = TSDB_DATA_TYPE_SMALLINT;
  strcpy(pSchema[cols].name, "vgroups");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

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  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
  strcpy(pSchema[cols].name, "ntables");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

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  pShow->bytes[cols] = 2;
  pSchema[cols].type = TSDB_DATA_TYPE_SMALLINT;
  strcpy(pSchema[cols].name, "replica");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 2;
  pSchema[cols].type = TSDB_DATA_TYPE_SMALLINT;
  strcpy(pSchema[cols].name, "quorum");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 2;
  pSchema[cols].type = TSDB_DATA_TYPE_SMALLINT;
  strcpy(pSchema[cols].name, "days");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 24 + VARSTR_HEADER_SIZE;
  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
  strcpy(pSchema[cols].name, "keep0,keep1,keep2");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
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  strcpy(pSchema[cols].name, "cache");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
  strcpy(pSchema[cols].name, "blocks");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
  strcpy(pSchema[cols].name, "minrows");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
  strcpy(pSchema[cols].name, "maxrows");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 1;
  pSchema[cols].type = TSDB_DATA_TYPE_TINYINT;
  strcpy(pSchema[cols].name, "wallevel");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 4;
  pSchema[cols].type = TSDB_DATA_TYPE_INT;
  strcpy(pSchema[cols].name, "fsync");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 1;
  pSchema[cols].type = TSDB_DATA_TYPE_TINYINT;
  strcpy(pSchema[cols].name, "comp");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 1;
  pSchema[cols].type = TSDB_DATA_TYPE_TINYINT;
  strcpy(pSchema[cols].name, "cachelast");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 3 + VARSTR_HEADER_SIZE;
  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
  strcpy(pSchema[cols].name, "precision");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

  pShow->bytes[cols] = 1;
  pSchema[cols].type = TSDB_DATA_TYPE_TINYINT;
  strcpy(pSchema[cols].name, "update");
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  pSchema[cols].bytes = pShow->bytes[cols];
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  cols++;

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  pMeta->numOfColumns = cols;
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  pShow->numOfColumns = cols;

  pShow->offset[0] = 0;
  for (int32_t i = 1; i < cols; ++i) {
    pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
  }

  pShow->numOfRows = sdbGetSize(pSdb, SDB_DB);
  pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
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  strcpy(pMeta->tbName, mndShowStr(pShow->type));
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  return 0;
}

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char *mnGetDbStr(char *src) {
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  char *pos = strstr(src, TS_PATH_DELIMITER);
  if (pos != NULL) ++pos;

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  if (pos == NULL) {
    return src;
  }

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  return pos;
}

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static int32_t mndRetrieveDbs(SMnodeMsg *pReq, SShowObj *pShow, char *data, int32_t rows) {
  SMnode *pMnode = pReq->pMnode;
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  SSdb   *pSdb = pMnode->pSdb;
  int32_t numOfRows = 0;
  SDbObj *pDb = NULL;
  char   *pWrite;
  int32_t cols = 0;

  while (numOfRows < rows) {
    pShow->pIter = sdbFetch(pSdb, SDB_DB, pShow->pIter, (void **)&pDb);
    if (pShow->pIter == NULL) break;

    cols = 0;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
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    char *name = mnGetDbStr(pDb->name);
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    if (name != NULL) {
      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, name, pShow->bytes[cols]);
    } else {
      STR_TO_VARSTR(pWrite, "NULL");
    }
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int64_t *)pWrite = pDb->createdTime;
    cols++;

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    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
1314
    *(int16_t *)pWrite = pDb->cfg.numOfVgroups;
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    cols++;

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    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int16_t *)pWrite = 0;  // todo
    cols++;

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    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int16_t *)pWrite = pDb->cfg.replications;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int16_t *)pWrite = pDb->cfg.quorum;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int16_t *)pWrite = pDb->cfg.daysPerFile;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    char tmp[128] = {0};
    if (pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep1 || pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep2) {
      sprintf(tmp, "%d,%d,%d", pDb->cfg.daysToKeep1, pDb->cfg.daysToKeep2, pDb->cfg.daysToKeep0);
    } else {
      sprintf(tmp, "%d,%d,%d", pDb->cfg.daysToKeep0, pDb->cfg.daysToKeep1, pDb->cfg.daysToKeep2);
    }
    STR_WITH_SIZE_TO_VARSTR(pWrite, tmp, strlen(tmp));
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int32_t *)pWrite = pDb->cfg.cacheBlockSize;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int32_t *)pWrite = pDb->cfg.totalBlocks;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
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    *(int32_t *)pWrite = pDb->cfg.minRows;
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    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
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    *(int32_t *)pWrite = pDb->cfg.maxRows;
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    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int8_t *)pWrite = pDb->cfg.walLevel;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int32_t *)pWrite = pDb->cfg.fsyncPeriod;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int8_t *)pWrite = pDb->cfg.compression;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int8_t *)pWrite = pDb->cfg.cacheLastRow;
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    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:
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        prec = "none";
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        break;
    }
    STR_WITH_SIZE_TO_VARSTR(pWrite, prec, 2);
    cols++;

    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
    *(int8_t *)pWrite = pDb->cfg.update;
    cols++;

    numOfRows++;
    sdbRelease(pSdb, pDb);
  }

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  mndVacuumResult(data, pShow->numOfColumns, numOfRows, rows, pShow);
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  pShow->numOfReads += numOfRows;

  return numOfRows;
}

static void mndCancelGetNextDb(SMnode *pMnode, void *pIter) {
  SSdb *pSdb = pMnode->pSdb;
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  sdbCancelFetch(pSdb, pIter);
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}