#3798

Committed 31 Mar 2025 10:39AM UTC coverage: 9.424% (-20.9%) from 30.372%

Build # #3798

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travis-ci

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happyguoxy

Commit Message

test:add test cases

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0.0

/source/dnode/mnode/impl/src/mndSnode.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 "mndDnode.h"
#include "mndPrivilege.h"
#include "mndShow.h"
#include "mndSnode.h"
#include "mndTrans.h"
#include "mndUser.h"

#define SNODE_VER_NUMBER   1
#define SNODE_RESERVE_SIZE 64

static SSdbRaw *mndSnodeActionEncode(SSnodeObj *pObj);
static SSdbRow *mndSnodeActionDecode(SSdbRaw *pRaw);
static int32_t  mndSnodeActionInsert(SSdb *pSdb, SSnodeObj *pObj);
static int32_t  mndSnodeActionUpdate(SSdb *pSdb, SSnodeObj *pOld, SSnodeObj *pNew);
static int32_t  mndSnodeActionDelete(SSdb *pSdb, SSnodeObj *pObj);
static int32_t  mndProcessCreateSnodeReq(SRpcMsg *pReq);
static int32_t  mndProcessDropSnodeReq(SRpcMsg *pReq);
static int32_t  mndRetrieveSnodes(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
static void     mndCancelGetNextSnode(SMnode *pMnode, void *pIter);

int32_t mndInitSnode(SMnode *pMnode) {
  SSdbTable table = {
      .sdbType = SDB_SNODE,
      .keyType = SDB_KEY_INT32,
      .encodeFp = (SdbEncodeFp)mndSnodeActionEncode,
      .decodeFp = (SdbDecodeFp)mndSnodeActionDecode,
      .insertFp = (SdbInsertFp)mndSnodeActionInsert,
      .updateFp = (SdbUpdateFp)mndSnodeActionUpdate,
      .deleteFp = (SdbDeleteFp)mndSnodeActionDelete,
  };

  mndSetMsgHandle(pMnode, TDMT_MND_CREATE_SNODE, mndProcessCreateSnodeReq);
  mndSetMsgHandle(pMnode, TDMT_MND_DROP_SNODE, mndProcessDropSnodeReq);
  mndSetMsgHandle(pMnode, TDMT_DND_CREATE_SNODE_RSP, mndTransProcessRsp);
  mndSetMsgHandle(pMnode, TDMT_DND_DROP_SNODE_RSP, mndTransProcessRsp);

  mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndRetrieveSnodes);
  mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndCancelGetNextSnode);

  return sdbSetTable(pMnode->pSdb, table);
}

void mndCleanupSnode(SMnode *pMnode) {}

SEpSet mndAcquireEpFromSnode(SMnode *pMnode, const SSnodeObj *pSnode) {
  SEpSet epSet = {.numOfEps = 1, .inUse = 0};
  memcpy(epSet.eps[0].fqdn, pSnode->pDnode->fqdn, TSDB_FQDN_LEN);
  epSet.eps[0].port = pSnode->pDnode->port;
  return epSet;
}

SSnodeObj *mndAcquireSnode(SMnode *pMnode, int32_t snodeId) {
  SSnodeObj *pObj = sdbAcquire(pMnode->pSdb, SDB_SNODE, &snodeId);
  if (pObj == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {
    terrno = TSDB_CODE_MND_SNODE_NOT_EXIST;
  }
  return pObj;
}

void mndReleaseSnode(SMnode *pMnode, SSnodeObj *pObj) {
  SSdb *pSdb = pMnode->pSdb;
  sdbRelease(pSdb, pObj);
}

static SSdbRaw *mndSnodeActionEncode(SSnodeObj *pObj) {
  int32_t code = 0;
  int32_t lino = 0;
  terrno = TSDB_CODE_OUT_OF_MEMORY;

  SSdbRaw *pRaw = sdbAllocRaw(SDB_SNODE, SNODE_VER_NUMBER, sizeof(SSnodeObj) + SNODE_RESERVE_SIZE);
  if (pRaw == NULL) goto _OVER;

  int32_t dataPos = 0;
  SDB_SET_INT32(pRaw, dataPos, pObj->id, _OVER)
  SDB_SET_INT64(pRaw, dataPos, pObj->createdTime, _OVER)
  SDB_SET_INT64(pRaw, dataPos, pObj->updateTime, _OVER)
  SDB_SET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)

  terrno = 0;

_OVER:
  if (terrno != 0) {
    mError("snode:%d, failed to encode to raw:%p since %s", pObj->id, pRaw, terrstr());
    sdbFreeRaw(pRaw);
    return NULL;
  }

  mTrace("snode:%d, encode to raw:%p, row:%p", pObj->id, pRaw, pObj);
  return pRaw;
}

static SSdbRow *mndSnodeActionDecode(SSdbRaw *pRaw) {
  int32_t code = 0;
  int32_t lino = 0;
  terrno = TSDB_CODE_OUT_OF_MEMORY;
  SSdbRow   *pRow = NULL;
  SSnodeObj *pObj = NULL;

  int8_t sver = 0;
  if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto _OVER;

  if (sver != SNODE_VER_NUMBER) {
    terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
    goto _OVER;
  }

  pRow = sdbAllocRow(sizeof(SSnodeObj));
  if (pRow == NULL) goto _OVER;

  pObj = sdbGetRowObj(pRow);
  if (pObj == NULL) goto _OVER;

  int32_t dataPos = 0;
  SDB_GET_INT32(pRaw, dataPos, &pObj->id, _OVER)
  SDB_GET_INT64(pRaw, dataPos, &pObj->createdTime, _OVER)
  SDB_GET_INT64(pRaw, dataPos, &pObj->updateTime, _OVER)
  SDB_GET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)

  terrno = 0;

_OVER:
  if (terrno != 0) {
    mError("snode:%d, failed to decode from raw:%p since %s", pObj == NULL ? 0 : pObj->id, pRaw, terrstr());
    taosMemoryFreeClear(pRow);
    return NULL;
  }

  mTrace("snode:%d, decode from raw:%p, row:%p", pObj->id, pRaw, pObj);
  return pRow;
}

static int32_t mndSnodeActionInsert(SSdb *pSdb, SSnodeObj *pObj) {
  mTrace("snode:%d, perform insert action, row:%p", pObj->id, pObj);
  pObj->pDnode = sdbAcquire(pSdb, SDB_DNODE, &pObj->id);
  if (pObj->pDnode == NULL) {
    terrno = TSDB_CODE_MND_DNODE_NOT_EXIST;
    mError("snode:%d, failed to perform insert action since %s", pObj->id, terrstr());
    return -1;
  }

  return 0;
}

static int32_t mndSnodeActionDelete(SSdb *pSdb, SSnodeObj *pObj) {
  mTrace("snode:%d, perform delete action, row:%p", pObj->id, pObj);
  if (pObj->pDnode != NULL) {
    sdbRelease(pSdb, pObj->pDnode);
    pObj->pDnode = NULL;
  }

  return 0;
}

static int32_t mndSnodeActionUpdate(SSdb *pSdb, SSnodeObj *pOld, SSnodeObj *pNew) {
  mTrace("snode:%d, perform update action, old row:%p new row:%p", pOld->id, pOld, pNew);
  pOld->updateTime = pNew->updateTime;
  return 0;
}

static int32_t mndSetCreateSnodeRedoLogs(STrans *pTrans, SSnodeObj *pObj) {
  int32_t  code = 0;
  SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);
  if (pRedoRaw == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    TAOS_RETURN(code);
  }
  TAOS_CHECK_RETURN(mndTransAppendRedolog(pTrans, pRedoRaw));
  TAOS_CHECK_RETURN(sdbSetRawStatus(pRedoRaw, SDB_STATUS_CREATING));
  TAOS_RETURN(code);
}

static int32_t mndSetCreateSnodeUndoLogs(STrans *pTrans, SSnodeObj *pObj) {
  int32_t  code = 0;
  SSdbRaw *pUndoRaw = mndSnodeActionEncode(pObj);
  if (pUndoRaw == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    TAOS_RETURN(code);
  }
  TAOS_CHECK_RETURN(mndTransAppendUndolog(pTrans, pUndoRaw));
  TAOS_CHECK_RETURN(sdbSetRawStatus(pUndoRaw, SDB_STATUS_DROPPED));
  TAOS_RETURN(code);
}

static int32_t mndSetCreateSnodeCommitLogs(STrans *pTrans, SSnodeObj *pObj) {
  int32_t  code = 0;
  SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);
  if (pCommitRaw == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    TAOS_RETURN(code);
  }
  TAOS_CHECK_RETURN(mndTransAppendCommitlog(pTrans, pCommitRaw));
  TAOS_CHECK_RETURN(sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY));
  TAOS_RETURN(code);
}

static int32_t mndSetCreateSnodeRedoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
  int32_t          code = 0;
  SDCreateSnodeReq createReq = {0};
  createReq.dnodeId = pDnode->id;

  int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &createReq);
  void   *pReq = taosMemoryMalloc(contLen);
  if (pReq == NULL) {
    code = terrno;
    TAOS_RETURN(code);
  }
  code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &createReq);
  if (code < 0) {
    mError("snode:%d, failed to serialize create drop snode request since %s", createReq.dnodeId, terrstr());
  }

  STransAction action = {0};
  action.epSet = mndGetDnodeEpset(pDnode);
  action.pCont = pReq;
  action.contLen = contLen;
  action.msgType = TDMT_DND_CREATE_SNODE;
  action.acceptableCode = TSDB_CODE_SNODE_ALREADY_DEPLOYED;

  if ((code = mndTransAppendRedoAction(pTrans, &action)) != 0) {
    taosMemoryFree(pReq);
    TAOS_RETURN(code);
  }

  TAOS_RETURN(code);
}

static int32_t mndSetCreateSnodeUndoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
  int32_t        code = 0;
  SDDropSnodeReq dropReq = {0};
  dropReq.dnodeId = pDnode->id;

  int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);
  void   *pReq = taosMemoryMalloc(contLen);
  if (pReq == NULL) {
    code = terrno;
    TAOS_RETURN(code);
  }
  code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);
  if (code < 0) {
    mError("snode:%d, failed to serialize create drop snode request since %s", dropReq.dnodeId, terrstr());
  }

  STransAction action = {0};
  action.epSet = mndGetDnodeEpset(pDnode);
  action.pCont = pReq;
  action.contLen = contLen;
  action.msgType = TDMT_DND_DROP_SNODE;
  action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;

  if ((code = mndTransAppendUndoAction(pTrans, &action)) != 0) {
    taosMemoryFree(pReq);
    TAOS_RETURN(code);
  }

  TAOS_RETURN(code);
}

static int32_t mndCreateSnode(SMnode *pMnode, SRpcMsg *pReq, SDnodeObj *pDnode, SMCreateSnodeReq *pCreate) {
  int32_t code = -1;

  SSnodeObj snodeObj = {0};
  snodeObj.id = pDnode->id;
  snodeObj.createdTime = taosGetTimestampMs();
  snodeObj.updateTime = snodeObj.createdTime;

  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, pReq, "create-snode");
  if (pTrans == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    goto _OVER;
  }
  mndTransSetSerial(pTrans);

  mInfo("trans:%d, used to create snode:%d", pTrans->id, pCreate->dnodeId);

  TAOS_CHECK_GOTO(mndSetCreateSnodeRedoLogs(pTrans, &snodeObj), NULL, _OVER);
  TAOS_CHECK_GOTO(mndSetCreateSnodeUndoLogs(pTrans, &snodeObj), NULL, _OVER);
  TAOS_CHECK_GOTO(mndSetCreateSnodeCommitLogs(pTrans, &snodeObj), NULL, _OVER);
  TAOS_CHECK_GOTO(mndSetCreateSnodeRedoActions(pTrans, pDnode, &snodeObj), NULL, _OVER);
  TAOS_CHECK_GOTO(mndSetCreateSnodeUndoActions(pTrans, pDnode, &snodeObj), NULL, _OVER);
  TAOS_CHECK_GOTO(mndTransPrepare(pMnode, pTrans), NULL, _OVER);

  code = 0;

_OVER:
  mndTransDrop(pTrans);
  TAOS_RETURN(code);
}

static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq) {
  SMnode          *pMnode = pReq->info.node;
  int32_t          code = -1;
  SSnodeObj       *pObj = NULL;
  SDnodeObj       *pDnode = NULL;
  SMCreateSnodeReq createReq = {0};

  TAOS_CHECK_GOTO(tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &createReq), NULL, _OVER);

  mInfo("snode:%d, start to create", createReq.dnodeId);
  TAOS_CHECK_GOTO(mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_CREATE_SNODE), NULL, _OVER);

  //  pObj = mndAcquireSnode(pMnode, createReq.dnodeId);
  //  if (pObj != NULL) {
  //    terrno = TSDB_CODE_MND_SNODE_ALREADY_EXIST;
  //    goto _OVER;
  //  } else if (terrno != TSDB_CODE_MND_SNODE_NOT_EXIST) {
  //    goto _OVER;
  //  }

  if (sdbGetSize(pMnode->pSdb, SDB_SNODE) >= 1) {
    code = TSDB_CODE_MND_SNODE_ALREADY_EXIST;
    goto _OVER;
  }

  pDnode = mndAcquireDnode(pMnode, createReq.dnodeId);
  if (pDnode == NULL) {
    code = TSDB_CODE_MND_DNODE_NOT_EXIST;
    goto _OVER;
  }

  code = mndCreateSnode(pMnode, pReq, pDnode, &createReq);
  if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;

_OVER:
  if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
    mError("snode:%d, failed to create since %s", createReq.dnodeId, tstrerror(code));
    TAOS_RETURN(code);
  }

  //  mndReleaseSnode(pMnode, pObj);
  mndReleaseDnode(pMnode, pDnode);
  tFreeSMCreateQnodeReq(&createReq);
  TAOS_RETURN(code);
}

static int32_t mndSetDropSnodeRedoLogs(STrans *pTrans, SSnodeObj *pObj) {
  int32_t  code = 0;
  SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);
  if (pRedoRaw == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    TAOS_RETURN(code);
  }
  TAOS_CHECK_RETURN(mndTransAppendRedolog(pTrans, pRedoRaw));
  TAOS_CHECK_RETURN(sdbSetRawStatus(pRedoRaw, SDB_STATUS_DROPPING));
  TAOS_RETURN(code);
}

static int32_t mndSetDropSnodeCommitLogs(STrans *pTrans, SSnodeObj *pObj) {
  int32_t  code = 0;
  SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);
  if (pCommitRaw == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    TAOS_RETURN(code);
  }
  TAOS_CHECK_RETURN(mndTransAppendCommitlog(pTrans, pCommitRaw));
  TAOS_CHECK_RETURN(sdbSetRawStatus(pCommitRaw, SDB_STATUS_DROPPED));
  TAOS_RETURN(code);
}

static int32_t mndSetDropSnodeRedoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
  int32_t        code = 0;
  SDDropSnodeReq dropReq = {0};
  dropReq.dnodeId = pDnode->id;

  int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);
  void   *pReq = taosMemoryMalloc(contLen);
  if (pReq == NULL) {
    code = terrno;
    TAOS_RETURN(code);
  }
  code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);
  if (code < 0) {
    mError("snode:%d, failed to serialize create drop snode request since %s", dropReq.dnodeId, terrstr());
  }

  STransAction action = {0};
  action.epSet = mndGetDnodeEpset(pDnode);
  action.pCont = pReq;
  action.contLen = contLen;
  action.msgType = TDMT_DND_DROP_SNODE;
  action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;

  if ((code = mndTransAppendRedoAction(pTrans, &action)) != 0) {
    taosMemoryFree(pReq);
    TAOS_RETURN(code);
  }

  TAOS_RETURN(code);
}

int32_t mndSetDropSnodeInfoToTrans(SMnode *pMnode, STrans *pTrans, SSnodeObj *pObj, bool force) {
  if (pObj == NULL) return 0;
  TAOS_CHECK_RETURN(mndSetDropSnodeRedoLogs(pTrans, pObj));
  TAOS_CHECK_RETURN(mndSetDropSnodeCommitLogs(pTrans, pObj));
  if (!force) {
    TAOS_CHECK_RETURN(mndSetDropSnodeRedoActions(pTrans, pObj->pDnode, pObj));
  }
  return 0;
}

static int32_t mndDropSnode(SMnode *pMnode, SRpcMsg *pReq, SSnodeObj *pObj) {
  int32_t code = -1;

  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_NOTHING, pReq, "drop-snode");
  if (pTrans == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    goto _OVER;
  }
  mndTransSetSerial(pTrans);

  mInfo("trans:%d, used to drop snode:%d", pTrans->id, pObj->id);
  TAOS_CHECK_GOTO(mndSetDropSnodeInfoToTrans(pMnode, pTrans, pObj, false), NULL, _OVER);
  TAOS_CHECK_GOTO(mndTransPrepare(pMnode, pTrans), NULL, _OVER);

  code = 0;

_OVER:
  mndTransDrop(pTrans);
  TAOS_RETURN(code);
}

static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq) {
  SMnode        *pMnode = pReq->info.node;
  int32_t        code = -1;
  SSnodeObj     *pObj = NULL;
  SMDropSnodeReq dropReq = {0};

  TAOS_CHECK_GOTO(tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &dropReq), NULL, _OVER);

  mInfo("snode:%d, start to drop", dropReq.dnodeId);
  TAOS_CHECK_GOTO(mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_DROP_SNODE), NULL, _OVER);

  if (dropReq.dnodeId <= 0) {
    code = TSDB_CODE_INVALID_MSG;
    goto _OVER;
  }

  pObj = mndAcquireSnode(pMnode, dropReq.dnodeId);
  if (pObj == NULL) {
    code = TSDB_CODE_MND_RETURN_VALUE_NULL;
    if (terrno != 0) code = terrno;
    goto _OVER;
  }

  // check deletable
  code = mndDropSnode(pMnode, pReq, pObj);
  if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;

_OVER:
  if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
    mError("snode:%d, failed to drop since %s", dropReq.dnodeId, tstrerror(code));
  }

  mndReleaseSnode(pMnode, pObj);
  tFreeSMCreateQnodeReq(&dropReq);
  TAOS_RETURN(code);
}

static int32_t mndRetrieveSnodes(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows) {
  SMnode    *pMnode = pReq->info.node;
  SSdb      *pSdb = pMnode->pSdb;
  int32_t    numOfRows = 0;
  int32_t    cols = 0;
  SSnodeObj *pObj = NULL;

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

    cols = 0;
    SColumnInfoData *pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
    TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->id, false), pSdb, pObj);

    char ep[TSDB_EP_LEN + VARSTR_HEADER_SIZE] = {0};
    STR_WITH_MAXSIZE_TO_VARSTR(ep, pObj->pDnode->ep, pShow->pMeta->pSchemas[cols].bytes);

    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
    TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)ep, false), pSdb, pObj);

    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
    TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->createdTime, false), pSdb,
                                   pObj);

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

  pShow->numOfRows += numOfRows;

  return numOfRows;
}

static void mndCancelGetNextSnode(SMnode *pMnode, void *pIter) {
  SSdb *pSdb = pMnode->pSdb;
  sdbCancelFetchByType(pSdb, pIter, SDB_SNODE);
}

1	/*
2	* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
3	*
4	* This program is free software: you can use, redistribute, and/or modify
5	* it under the terms of the GNU Affero General Public License, version 3
6	* or later ("AGPL"), as published by the Free Software Foundation.
7	*
8	* This program is distributed in the hope that it will be useful, but WITHOUT
9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10	* FITNESS FOR A PARTICULAR PURPOSE.
11	*
12	* You should have received a copy of the GNU Affero General Public License
13	* along with this program. If not, see <http://www.gnu.org/licenses/>.
14	*/
15
16	#define _DEFAULT_SOURCE
17	#include "mndDnode.h"
18	#include "mndPrivilege.h"
19	#include "mndShow.h"
20	#include "mndSnode.h"
21	#include "mndTrans.h"
22	#include "mndUser.h"
23
24	#define SNODE_VER_NUMBER 1
25	#define SNODE_RESERVE_SIZE 64
26
27	static SSdbRaw mndSnodeActionEncode(SSnodeObj pObj);
28	static SSdbRow mndSnodeActionDecode(SSdbRaw pRaw);
29	static int32_t mndSnodeActionInsert(SSdb pSdb, SSnodeObj pObj);
30	static int32_t mndSnodeActionUpdate(SSdb pSdb, SSnodeObj pOld, SSnodeObj *pNew);
31	static int32_t mndSnodeActionDelete(SSdb pSdb, SSnodeObj pObj);
32	static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq);
33	static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq);
34	static int32_t mndRetrieveSnodes(SRpcMsg pReq, SShowObj pShow, SSDataBlock *pBlock, int32_t rows);
35	static void mndCancelGetNextSnode(SMnode pMnode, void pIter);
36
37	int32_t mndInitSnode(SMnode *pMnode) {	×
38	SSdbTable table = {	×
39	.sdbType = SDB_SNODE,
40	.keyType = SDB_KEY_INT32,
41	.encodeFp = (SdbEncodeFp)mndSnodeActionEncode,
42	.decodeFp = (SdbDecodeFp)mndSnodeActionDecode,
43	.insertFp = (SdbInsertFp)mndSnodeActionInsert,
44	.updateFp = (SdbUpdateFp)mndSnodeActionUpdate,
45	.deleteFp = (SdbDeleteFp)mndSnodeActionDelete,
46	};
47
48	mndSetMsgHandle(pMnode, TDMT_MND_CREATE_SNODE, mndProcessCreateSnodeReq);	×
49	mndSetMsgHandle(pMnode, TDMT_MND_DROP_SNODE, mndProcessDropSnodeReq);	×
50	mndSetMsgHandle(pMnode, TDMT_DND_CREATE_SNODE_RSP, mndTransProcessRsp);	×
51	mndSetMsgHandle(pMnode, TDMT_DND_DROP_SNODE_RSP, mndTransProcessRsp);	×
52
53	mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndRetrieveSnodes);	×
54	mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndCancelGetNextSnode);	×
55
56	return sdbSetTable(pMnode->pSdb, table);	×
57	}
58
59	void mndCleanupSnode(SMnode *pMnode) {}	×
60
61	SEpSet mndAcquireEpFromSnode(SMnode pMnode, const SSnodeObj pSnode) {	×
62	SEpSet epSet = {.numOfEps = 1, .inUse = 0};	×
63	memcpy(epSet.eps[0].fqdn, pSnode->pDnode->fqdn, TSDB_FQDN_LEN);	×
64	epSet.eps[0].port = pSnode->pDnode->port;	×
65	return epSet;	×
66	}
67
68	SSnodeObj mndAcquireSnode(SMnode pMnode, int32_t snodeId) {	×
69	SSnodeObj *pObj = sdbAcquire(pMnode->pSdb, SDB_SNODE, &snodeId);	×
70	if (pObj == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {	×
71	terrno = TSDB_CODE_MND_SNODE_NOT_EXIST;	×
72	}
73	return pObj;	×
74	}
75
76	void mndReleaseSnode(SMnode pMnode, SSnodeObj pObj) {	×
77	SSdb *pSdb = pMnode->pSdb;	×
78	sdbRelease(pSdb, pObj);	×
79	}	×
80
81	static SSdbRaw mndSnodeActionEncode(SSnodeObj pObj) {	×
82	int32_t code = 0;	×
83	int32_t lino = 0;	×
84	terrno = TSDB_CODE_OUT_OF_MEMORY;	×
85
86	SSdbRaw *pRaw = sdbAllocRaw(SDB_SNODE, SNODE_VER_NUMBER, sizeof(SSnodeObj) + SNODE_RESERVE_SIZE);	×
87	if (pRaw == NULL) goto _OVER;	×
88
89	int32_t dataPos = 0;	×
90	SDB_SET_INT32(pRaw, dataPos, pObj->id, _OVER)	×
91	SDB_SET_INT64(pRaw, dataPos, pObj->createdTime, _OVER)	×
92	SDB_SET_INT64(pRaw, dataPos, pObj->updateTime, _OVER)	×
93	SDB_SET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)	×
94
95	terrno = 0;	×
96
97	_OVER:	×
98	if (terrno != 0) {	×
99	mError("snode:%d, failed to encode to raw:%p since %s", pObj->id, pRaw, terrstr());	×
100	sdbFreeRaw(pRaw);	×
101	return NULL;	×
102	}
103
104	mTrace("snode:%d, encode to raw:%p, row:%p", pObj->id, pRaw, pObj);	×
105	return pRaw;	×
106	}
107
108	static SSdbRow mndSnodeActionDecode(SSdbRaw pRaw) {	×
109	int32_t code = 0;	×
110	int32_t lino = 0;	×
111	terrno = TSDB_CODE_OUT_OF_MEMORY;	×
112	SSdbRow *pRow = NULL;	×
113	SSnodeObj *pObj = NULL;	×
114
115	int8_t sver = 0;	×
116	if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto _OVER;	×
117
118	if (sver != SNODE_VER_NUMBER) {	×
119	terrno = TSDB_CODE_SDB_INVALID_DATA_VER;	×
120	goto _OVER;	×
121	}
122
123	pRow = sdbAllocRow(sizeof(SSnodeObj));	×
124	if (pRow == NULL) goto _OVER;	×
125
126	pObj = sdbGetRowObj(pRow);	×
127	if (pObj == NULL) goto _OVER;	×
128
129	int32_t dataPos = 0;	×
130	SDB_GET_INT32(pRaw, dataPos, &pObj->id, _OVER)	×
131	SDB_GET_INT64(pRaw, dataPos, &pObj->createdTime, _OVER)	×
132	SDB_GET_INT64(pRaw, dataPos, &pObj->updateTime, _OVER)	×
133	SDB_GET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)	×
134
135	terrno = 0;	×
136
137	_OVER:	×
138	if (terrno != 0) {	×
139	mError("snode:%d, failed to decode from raw:%p since %s", pObj == NULL ? 0 : pObj->id, pRaw, terrstr());	×
140	taosMemoryFreeClear(pRow);	×
141	return NULL;	×
142	}
143
144	mTrace("snode:%d, decode from raw:%p, row:%p", pObj->id, pRaw, pObj);	×
145	return pRow;	×
146	}
147
148	static int32_t mndSnodeActionInsert(SSdb pSdb, SSnodeObj pObj) {	×
149	mTrace("snode:%d, perform insert action, row:%p", pObj->id, pObj);	×
150	pObj->pDnode = sdbAcquire(pSdb, SDB_DNODE, &pObj->id);	×
151	if (pObj->pDnode == NULL) {	×
152	terrno = TSDB_CODE_MND_DNODE_NOT_EXIST;	×
153	mError("snode:%d, failed to perform insert action since %s", pObj->id, terrstr());	×
154	return -1;	×
155	}
156
157	return 0;	×
158	}
159
160	static int32_t mndSnodeActionDelete(SSdb pSdb, SSnodeObj pObj) {	×
161	mTrace("snode:%d, perform delete action, row:%p", pObj->id, pObj);	×
162	if (pObj->pDnode != NULL) {	×
163	sdbRelease(pSdb, pObj->pDnode);	×
164	pObj->pDnode = NULL;	×
165	}
166
167	return 0;	×
168	}
169
170	static int32_t mndSnodeActionUpdate(SSdb pSdb, SSnodeObj pOld, SSnodeObj *pNew) {	×
171	mTrace("snode:%d, perform update action, old row:%p new row:%p", pOld->id, pOld, pNew);	×
172	pOld->updateTime = pNew->updateTime;	×
173	return 0;	×
174	}
175
176	static int32_t mndSetCreateSnodeRedoLogs(STrans pTrans, SSnodeObj pObj) {	×
177	int32_t code = 0;	×
178	SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);	×
179	if (pRedoRaw == NULL) {	×
180	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
181	if (terrno != 0) code = terrno;	×
182	TAOS_RETURN(code);	×
183	}
184	TAOS_CHECK_RETURN(mndTransAppendRedolog(pTrans, pRedoRaw));	×
185	TAOS_CHECK_RETURN(sdbSetRawStatus(pRedoRaw, SDB_STATUS_CREATING));	×
186	TAOS_RETURN(code);	×
187	}
188
189	static int32_t mndSetCreateSnodeUndoLogs(STrans pTrans, SSnodeObj pObj) {	×
190	int32_t code = 0;	×
191	SSdbRaw *pUndoRaw = mndSnodeActionEncode(pObj);	×
192	if (pUndoRaw == NULL) {	×
193	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
194	if (terrno != 0) code = terrno;	×
195	TAOS_RETURN(code);	×
196	}
197	TAOS_CHECK_RETURN(mndTransAppendUndolog(pTrans, pUndoRaw));	×
198	TAOS_CHECK_RETURN(sdbSetRawStatus(pUndoRaw, SDB_STATUS_DROPPED));	×
199	TAOS_RETURN(code);	×
200	}
201
202	static int32_t mndSetCreateSnodeCommitLogs(STrans pTrans, SSnodeObj pObj) {	×
203	int32_t code = 0;	×
204	SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);	×
205	if (pCommitRaw == NULL) {	×
206	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
207	if (terrno != 0) code = terrno;	×
208	TAOS_RETURN(code);	×
209	}
210	TAOS_CHECK_RETURN(mndTransAppendCommitlog(pTrans, pCommitRaw));	×
211	TAOS_CHECK_RETURN(sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY));	×
212	TAOS_RETURN(code);	×
213	}
214
215	static int32_t mndSetCreateSnodeRedoActions(STrans pTrans, SDnodeObj pDnode, SSnodeObj *pObj) {	×
216	int32_t code = 0;	×
217	SDCreateSnodeReq createReq = {0};	×
218	createReq.dnodeId = pDnode->id;	×
219
220	int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &createReq);	×
221	void *pReq = taosMemoryMalloc(contLen);	×
222	if (pReq == NULL) {	×
223	code = terrno;	×
224	TAOS_RETURN(code);	×
225	}
226	code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &createReq);	×
227	if (code < 0) {	×
228	mError("snode:%d, failed to serialize create drop snode request since %s", createReq.dnodeId, terrstr());	×
229	}
230
231	STransAction action = {0};	×
232	action.epSet = mndGetDnodeEpset(pDnode);	×
233	action.pCont = pReq;	×
234	action.contLen = contLen;	×
235	action.msgType = TDMT_DND_CREATE_SNODE;	×
236	action.acceptableCode = TSDB_CODE_SNODE_ALREADY_DEPLOYED;	×
237
238	if ((code = mndTransAppendRedoAction(pTrans, &action)) != 0) {	×
239	taosMemoryFree(pReq);	×
240	TAOS_RETURN(code);	×
241	}
242
243	TAOS_RETURN(code);	×
244	}
245
246	static int32_t mndSetCreateSnodeUndoActions(STrans pTrans, SDnodeObj pDnode, SSnodeObj *pObj) {	×
247	int32_t code = 0;	×
248	SDDropSnodeReq dropReq = {0};	×
249	dropReq.dnodeId = pDnode->id;	×
250
251	int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);	×
252	void *pReq = taosMemoryMalloc(contLen);	×
253	if (pReq == NULL) {	×
254	code = terrno;	×
255	TAOS_RETURN(code);	×
256	}
257	code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);	×
258	if (code < 0) {	×
259	mError("snode:%d, failed to serialize create drop snode request since %s", dropReq.dnodeId, terrstr());	×
260	}
261
262	STransAction action = {0};	×
263	action.epSet = mndGetDnodeEpset(pDnode);	×
264	action.pCont = pReq;	×
265	action.contLen = contLen;	×
266	action.msgType = TDMT_DND_DROP_SNODE;	×
267	action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;	×
268
269	if ((code = mndTransAppendUndoAction(pTrans, &action)) != 0) {	×
270	taosMemoryFree(pReq);	×
271	TAOS_RETURN(code);	×
272	}
273
274	TAOS_RETURN(code);	×
275	}
276
277	static int32_t mndCreateSnode(SMnode pMnode, SRpcMsg pReq, SDnodeObj pDnode, SMCreateSnodeReq pCreate) {	×
278	int32_t code = -1;	×
279
280	SSnodeObj snodeObj = {0};	×
281	snodeObj.id = pDnode->id;	×
282	snodeObj.createdTime = taosGetTimestampMs();	×
283	snodeObj.updateTime = snodeObj.createdTime;	×
284
285	STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, pReq, "create-snode");	×
286	if (pTrans == NULL) {	×
287	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
288	if (terrno != 0) code = terrno;	×
289	goto _OVER;	×
290	}
291	mndTransSetSerial(pTrans);	×
292
293	mInfo("trans:%d, used to create snode:%d", pTrans->id, pCreate->dnodeId);	×
294
295	TAOS_CHECK_GOTO(mndSetCreateSnodeRedoLogs(pTrans, &snodeObj), NULL, _OVER);	×
296	TAOS_CHECK_GOTO(mndSetCreateSnodeUndoLogs(pTrans, &snodeObj), NULL, _OVER);	×
297	TAOS_CHECK_GOTO(mndSetCreateSnodeCommitLogs(pTrans, &snodeObj), NULL, _OVER);	×
298	TAOS_CHECK_GOTO(mndSetCreateSnodeRedoActions(pTrans, pDnode, &snodeObj), NULL, _OVER);	×
299	TAOS_CHECK_GOTO(mndSetCreateSnodeUndoActions(pTrans, pDnode, &snodeObj), NULL, _OVER);	×
300	TAOS_CHECK_GOTO(mndTransPrepare(pMnode, pTrans), NULL, _OVER);	×
301
302	code = 0;	×
303
304	_OVER:	×
305	mndTransDrop(pTrans);	×
306	TAOS_RETURN(code);	×
307	}
308
309	static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq) {	×
310	SMnode *pMnode = pReq->info.node;	×
311	int32_t code = -1;	×
312	SSnodeObj *pObj = NULL;	×
313	SDnodeObj *pDnode = NULL;	×
314	SMCreateSnodeReq createReq = {0};	×
315
316	TAOS_CHECK_GOTO(tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &createReq), NULL, _OVER);	×
317
318	mInfo("snode:%d, start to create", createReq.dnodeId);	×
319	TAOS_CHECK_GOTO(mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_CREATE_SNODE), NULL, _OVER);	×
320
321	// pObj = mndAcquireSnode(pMnode, createReq.dnodeId);
322	// if (pObj != NULL) {
323	// terrno = TSDB_CODE_MND_SNODE_ALREADY_EXIST;
324	// goto _OVER;
325	// } else if (terrno != TSDB_CODE_MND_SNODE_NOT_EXIST) {
326	// goto _OVER;
327	// }
328
329	if (sdbGetSize(pMnode->pSdb, SDB_SNODE) >= 1) {	×
330	code = TSDB_CODE_MND_SNODE_ALREADY_EXIST;	×
331	goto _OVER;	×
332	}
333
334	pDnode = mndAcquireDnode(pMnode, createReq.dnodeId);	×
335	if (pDnode == NULL) {	×
336	code = TSDB_CODE_MND_DNODE_NOT_EXIST;	×
337	goto _OVER;	×
338	}
339
340	code = mndCreateSnode(pMnode, pReq, pDnode, &createReq);	×
341	if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;	×
342
343	_OVER:	×
344	if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {	×
345	mError("snode:%d, failed to create since %s", createReq.dnodeId, tstrerror(code));	×
346	TAOS_RETURN(code);	×
347	}
348
349	// mndReleaseSnode(pMnode, pObj);
350	mndReleaseDnode(pMnode, pDnode);	×
351	tFreeSMCreateQnodeReq(&createReq);	×
352	TAOS_RETURN(code);	×
353	}
354
355	static int32_t mndSetDropSnodeRedoLogs(STrans pTrans, SSnodeObj pObj) {	×
356	int32_t code = 0;	×
357	SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);	×
358	if (pRedoRaw == NULL) {	×
359	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
360	if (terrno != 0) code = terrno;	×
361	TAOS_RETURN(code);	×
362	}
363	TAOS_CHECK_RETURN(mndTransAppendRedolog(pTrans, pRedoRaw));	×
364	TAOS_CHECK_RETURN(sdbSetRawStatus(pRedoRaw, SDB_STATUS_DROPPING));	×
365	TAOS_RETURN(code);	×
366	}
367
368	static int32_t mndSetDropSnodeCommitLogs(STrans pTrans, SSnodeObj pObj) {	×
369	int32_t code = 0;	×
370	SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);	×
371	if (pCommitRaw == NULL) {	×
372	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
373	if (terrno != 0) code = terrno;	×
374	TAOS_RETURN(code);	×
375	}
376	TAOS_CHECK_RETURN(mndTransAppendCommitlog(pTrans, pCommitRaw));	×
377	TAOS_CHECK_RETURN(sdbSetRawStatus(pCommitRaw, SDB_STATUS_DROPPED));	×
378	TAOS_RETURN(code);	×
379	}
380
381	static int32_t mndSetDropSnodeRedoActions(STrans pTrans, SDnodeObj pDnode, SSnodeObj *pObj) {	×
382	int32_t code = 0;	×
383	SDDropSnodeReq dropReq = {0};	×
384	dropReq.dnodeId = pDnode->id;	×
385
386	int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);	×
387	void *pReq = taosMemoryMalloc(contLen);	×
388	if (pReq == NULL) {	×
389	code = terrno;	×
390	TAOS_RETURN(code);	×
391	}
392	code = tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);	×
393	if (code < 0) {	×
394	mError("snode:%d, failed to serialize create drop snode request since %s", dropReq.dnodeId, terrstr());	×
395	}
396
397	STransAction action = {0};	×
398	action.epSet = mndGetDnodeEpset(pDnode);	×
399	action.pCont = pReq;	×
400	action.contLen = contLen;	×
401	action.msgType = TDMT_DND_DROP_SNODE;	×
402	action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;	×
403
404	if ((code = mndTransAppendRedoAction(pTrans, &action)) != 0) {	×
405	taosMemoryFree(pReq);	×
406	TAOS_RETURN(code);	×
407	}
408
409	TAOS_RETURN(code);	×
410	}
411
412	int32_t mndSetDropSnodeInfoToTrans(SMnode pMnode, STrans pTrans, SSnodeObj *pObj, bool force) {	×
413	if (pObj == NULL) return 0;	×
414	TAOS_CHECK_RETURN(mndSetDropSnodeRedoLogs(pTrans, pObj));	×
415	TAOS_CHECK_RETURN(mndSetDropSnodeCommitLogs(pTrans, pObj));	×
416	if (!force) {	×
417	TAOS_CHECK_RETURN(mndSetDropSnodeRedoActions(pTrans, pObj->pDnode, pObj));	×
418	}
419	return 0;	×
420	}
421
422	static int32_t mndDropSnode(SMnode pMnode, SRpcMsg pReq, SSnodeObj *pObj) {	×
423	int32_t code = -1;	×
424
425	STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_NOTHING, pReq, "drop-snode");	×
426	if (pTrans == NULL) {	×
427	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
428	if (terrno != 0) code = terrno;	×
429	goto _OVER;	×
430	}
431	mndTransSetSerial(pTrans);	×
432
433	mInfo("trans:%d, used to drop snode:%d", pTrans->id, pObj->id);	×
434	TAOS_CHECK_GOTO(mndSetDropSnodeInfoToTrans(pMnode, pTrans, pObj, false), NULL, _OVER);	×
435	TAOS_CHECK_GOTO(mndTransPrepare(pMnode, pTrans), NULL, _OVER);	×
436
437	code = 0;	×
438
439	_OVER:	×
440	mndTransDrop(pTrans);	×
441	TAOS_RETURN(code);	×
442	}
443
444	static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq) {	×
445	SMnode *pMnode = pReq->info.node;	×
446	int32_t code = -1;	×
447	SSnodeObj *pObj = NULL;	×
448	SMDropSnodeReq dropReq = {0};	×
449
450	TAOS_CHECK_GOTO(tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &dropReq), NULL, _OVER);	×
451
452	mInfo("snode:%d, start to drop", dropReq.dnodeId);	×
453	TAOS_CHECK_GOTO(mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_DROP_SNODE), NULL, _OVER);	×
454
455	if (dropReq.dnodeId <= 0) {	×
456	code = TSDB_CODE_INVALID_MSG;	×
457	goto _OVER;	×
458	}
459
460	pObj = mndAcquireSnode(pMnode, dropReq.dnodeId);	×
461	if (pObj == NULL) {	×
462	code = TSDB_CODE_MND_RETURN_VALUE_NULL;	×
463	if (terrno != 0) code = terrno;	×
464	goto _OVER;	×
465	}
466
467	// check deletable
468	code = mndDropSnode(pMnode, pReq, pObj);	×
469	if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;	×
470
471	_OVER:	×
472	if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {	×
473	mError("snode:%d, failed to drop since %s", dropReq.dnodeId, tstrerror(code));	×
474	}
475
476	mndReleaseSnode(pMnode, pObj);	×
477	tFreeSMCreateQnodeReq(&dropReq);	×
478	TAOS_RETURN(code);	×
479	}
480
481	static int32_t mndRetrieveSnodes(SRpcMsg pReq, SShowObj pShow, SSDataBlock *pBlock, int32_t rows) {	×
482	SMnode *pMnode = pReq->info.node;	×
483	SSdb *pSdb = pMnode->pSdb;	×
484	int32_t numOfRows = 0;	×
485	int32_t cols = 0;	×
486	SSnodeObj *pObj = NULL;	×
487
488	while (numOfRows < rows) {	×
489	pShow->pIter = sdbFetch(pSdb, SDB_SNODE, pShow->pIter, (void **)&pObj);	×
490	if (pShow->pIter == NULL) break;	×
491
492	cols = 0;	×
493	SColumnInfoData *pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);	×
494	TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->id, false), pSdb, pObj);	×
495
496	char ep[TSDB_EP_LEN + VARSTR_HEADER_SIZE] = {0};	×
497	STR_WITH_MAXSIZE_TO_VARSTR(ep, pObj->pDnode->ep, pShow->pMeta->pSchemas[cols].bytes);	×
498
499	pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);	×
500	TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)ep, false), pSdb, pObj);	×
501
502	pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);	×
503	TAOS_CHECK_RETURN_WITH_RELEASE(colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->createdTime, false), pSdb,	×
504	pObj);
505
506	numOfRows++;	×
507	sdbRelease(pSdb, pObj);	×
508	}
509
510	pShow->numOfRows += numOfRows;	×
511
512	return numOfRows;	×
513	}
514
515	static void mndCancelGetNextSnode(SMnode pMnode, void pIter) {	×
516	SSdb *pSdb = pMnode->pSdb;	×
517	sdbCancelFetchByType(pSdb, pIter, SDB_SNODE);	×
518	}	×

taosdata / TDengine / #3798

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