#4788

Committed 14 Oct 2025 11:21AM UTC coverage: 60.992% (-2.3%) from 63.264%

Build # #4788

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Merge 7ca9b50f9 into 19574fe21

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75.46

/source/dnode/mnode/impl/src/mndShow.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 "mndShow.h"
#include "mndPrivilege.h"
#include "mndUser.h"
#include "systable.h"

#define SHOW_STEP_SIZE            100
#define SHOW_COLS_STEP_SIZE       4096
#define SHOW_PRIVILEGES_STEP_SIZE 2048

static SShowObj *mndCreateShowObj(SMnode *pMnode, SRetrieveTableReq *pReq);
static void      mndFreeShowObj(SShowObj *pShow);
static SShowObj *mndAcquireShowObj(SMnode *pMnode, int64_t showId);
static void      mndReleaseShowObj(SShowObj *pShow, bool forceRemove);
static bool      mndCheckRetrieveFinished(SShowObj *pShow);
static int32_t   mndProcessRetrieveSysTableReq(SRpcMsg *pReq);

int32_t mndInitShow(SMnode *pMnode) {
  int32_t    code = 0;
  SShowMgmt *pMgmt = &pMnode->showMgmt;

  pMgmt->cache = taosCacheInit(TSDB_DATA_TYPE_INT, 5000, true, (__cache_free_fn_t)mndFreeShowObj, "show");
  if (pMgmt->cache == NULL) {
    code = TSDB_CODE_OUT_OF_MEMORY;
    mError("failed to alloc show cache since %s", tstrerror(code));
    TAOS_RETURN(code);
  }

  mndSetMsgHandle(pMnode, TDMT_MND_SYSTABLE_RETRIEVE, mndProcessRetrieveSysTableReq);
  TAOS_RETURN(code);
}

void mndCleanupShow(SMnode *pMnode) {
  SShowMgmt *pMgmt = &pMnode->showMgmt;
  if (pMgmt->cache != NULL) {
    taosCacheCleanup(pMgmt->cache);
    pMgmt->cache = NULL;
  }
}

static int32_t convertToRetrieveType(char *name, int32_t len) {
  int32_t type = -1;

  if (strncasecmp(name, TSDB_INS_TABLE_DNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_DNODE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_MNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_MNODE;
    /*
      } else if (strncasecmp(name, TSDB_INS_TABLE_MODULES, len) == 0) {
        type = TSDB_MGMT_TABLE_MODULE;
    */
  } else if (strncasecmp(name, TSDB_INS_TABLE_QNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_QNODE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_SNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_SNODE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_ANODES, len) == 0) {
    type = TSDB_MGMT_TABLE_ANODE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_ANODES_FULL, len) == 0) {
    type = TSDB_MGMT_TABLE_ANODE_FULL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_BNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_BNODE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_ARBGROUPS, len) == 0) {
    type = TSDB_MGMT_TABLE_ARBGROUP;
  } else if (strncasecmp(name, TSDB_INS_TABLE_CLUSTER, len) == 0) {
    type = TSDB_MGMT_TABLE_CLUSTER;
  } else if (strncasecmp(name, TSDB_INS_TABLE_DATABASES, len) == 0) {
    type = TSDB_MGMT_TABLE_DB;
  } else if (strncasecmp(name, TSDB_INS_TABLE_FUNCTIONS, len) == 0) {
    type = TSDB_MGMT_TABLE_FUNC;
  } else if (strncasecmp(name, TSDB_INS_TABLE_INDEXES, len) == 0) {
    type = TSDB_MGMT_TABLE_INDEX;
  } else if (strncasecmp(name, TSDB_INS_TABLE_STABLES, len) == 0) {
    type = TSDB_MGMT_TABLE_STB;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TABLES, len) == 0) {
    type = TSDB_MGMT_TABLE_TABLE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TAGS, len) == 0) {
    type = TSDB_MGMT_TABLE_TAG;
  } else if (strncasecmp(name, TSDB_INS_TABLE_COLS, len) == 0) {
    type = TSDB_MGMT_TABLE_COL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TABLE_DISTRIBUTED, len) == 0) {
    //    type = TSDB_MGMT_TABLE_DIST;
  } else if (strncasecmp(name, TSDB_INS_TABLE_USERS, len) == 0) {
    type = TSDB_MGMT_TABLE_USER;
  } else if (strncasecmp(name, TSDB_INS_TABLE_USERS_FULL, len) == 0) {
    type = TSDB_MGMT_TABLE_USER_FULL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_LICENCES, len) == 0) {
    type = TSDB_MGMT_TABLE_GRANTS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_VGROUPS, len) == 0) {
    type = TSDB_MGMT_TABLE_VGROUP;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_CONSUMERS, len) == 0) {
    type = TSDB_MGMT_TABLE_CONSUMERS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_SUBSCRIPTIONS, len) == 0) {
    type = TSDB_MGMT_TABLE_SUBSCRIPTIONS;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_TRANS, len) == 0) {
    type = TSDB_MGMT_TABLE_TRANS;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_SMAS, len) == 0) {
    type = TSDB_MGMT_TABLE_SMAS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_CONFIGS, len) == 0) {
    type = TSDB_MGMT_TABLE_CONFIGS;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_CONNECTIONS, len) == 0) {
    type = TSDB_MGMT_TABLE_CONNS;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_QUERIES, len) == 0) {
    type = TSDB_MGMT_TABLE_QUERIES;
  } else if (strncasecmp(name, TSDB_INS_TABLE_VNODES, len) == 0) {
    type = TSDB_MGMT_TABLE_VNODES;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TOPICS, len) == 0) {
    type = TSDB_MGMT_TABLE_TOPICS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_STREAMS, len) == 0) {
    type = TSDB_MGMT_TABLE_STREAMS;
  } else if (strncasecmp(name, TSDB_PERFS_TABLE_APPS, len) == 0) {
    type = TSDB_MGMT_TABLE_APPS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_STREAM_TASKS, len) == 0) {
    type = TSDB_MGMT_TABLE_STREAM_TASKS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_STREAM_RECALCULATES, len) == 0) {
    type = TSDB_MGMT_TABLE_STREAM_RECALCULATES;
  } else if (strncasecmp(name, TSDB_INS_TABLE_USER_PRIVILEGES, len) == 0) {
    type = TSDB_MGMT_TABLE_PRIVILEGES;
  } else if (strncasecmp(name, TSDB_INS_TABLE_VIEWS, len) == 0) {
    type = TSDB_MGMT_TABLE_VIEWS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_COMPACTS, len) == 0) {
    type = TSDB_MGMT_TABLE_COMPACT;
  } else if (strncasecmp(name, TSDB_INS_TABLE_SCANS, len) == 0) {
    type = TSDB_MGMT_TABLE_SCAN;
  } else if (strncasecmp(name, TSDB_INS_TABLE_COMPACT_DETAILS, len) == 0) {
    type = TSDB_MGMT_TABLE_COMPACT_DETAIL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_SCAN_DETAILS, len) == 0) {
    type = TSDB_MGMT_TABLE_SCAN_DETAIL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_SSMIGRATES, len) == 0) {
    type = TSDB_MGMT_TABLE_SSMIGRATE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TRANSACTION_DETAILS, len) == 0) {
    type = TSDB_MGMT_TABLE_TRANSACTION_DETAIL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_GRANTS_FULL, len) == 0) {
    type = TSDB_MGMT_TABLE_GRANTS_FULL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_GRANTS_LOGS, len) == 0) {
    type = TSDB_MGMT_TABLE_GRANTS_LOGS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_MACHINES, len) == 0) {
    type = TSDB_MGMT_TABLE_MACHINES;
  } else if (strncasecmp(name, TSDB_INS_TABLE_ENCRYPTIONS, len) == 0) {
    type = TSDB_MGMT_TABLE_ENCRYPTIONS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_TSMAS, len) == 0) {
    type = TSDB_MGMT_TABLE_TSMAS;
  } else if (strncasecmp(name, TSDB_INS_DISK_USAGE, len) == 0) {
    type = TSDB_MGMT_TABLE_USAGE;
  } else if (strncasecmp(name, TSDB_INS_TABLE_FILESETS, len) == 0) {
    type = TSDB_MGMT_TABLE_FILESETS;
  } else if (strncasecmp(name, TSDB_INS_TABLE_VC_COLS, len) == 0) {
    type = TSDB_MGMT_TABLE_VC_COL;
  } else if (strncasecmp(name, TSDB_INS_TABLE_MOUNTS, len) == 0) {
    type = TSDB_MGMT_TABLE_MOUNT;
  } else if (strncasecmp(name, TSDB_INS_TABLE_RSMAS, len) == 0) {
    type = TSDB_MGMT_TABLE_RSMA;
  } else if (strncasecmp(name, TSDB_INS_TABLE_RETENTIONS, len) == 0) {
    type = TSDB_MGMT_TABLE_RETENTION;
  } else if (strncasecmp(name, TSDB_INS_TABLE_RETENTION_DETAILS, len) == 0) {
    type = TSDB_MGMT_TABLE_RETENTION_DETAIL;
  } else {
    mError("invalid show name:%s len:%d", name, len);
  }

  return type;
}

static SShowObj *mndCreateShowObj(SMnode *pMnode, SRetrieveTableReq *pReq) {
  SShowMgmt *pMgmt = &pMnode->showMgmt;

  int64_t showId = atomic_add_fetch_64(&pMgmt->showId, 1);
  if (showId == 0) atomic_add_fetch_64(&pMgmt->showId, 1);

  int32_t size = sizeof(SShowObj);

  SShowObj showObj = {0};

  showObj.id = showId;
  showObj.pMnode = pMnode;
  showObj.type = convertToRetrieveType(pReq->tb, tListLen(pReq->tb));
  (void)memcpy(showObj.db, pReq->db, TSDB_DB_FNAME_LEN);
  tstrncpy(showObj.filterTb, pReq->filterTb, TSDB_TABLE_NAME_LEN);

  int32_t   keepTime = tsShellActivityTimer * 6 * 1000;
  SShowObj *pShow = taosCachePut(pMgmt->cache, &showId, sizeof(int64_t), &showObj, size, keepTime);
  if (pShow == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    mError("show:0x%" PRIx64 ", failed to put into cache since %s", showId, terrstr());
    return NULL;
  }

  mTrace("show:0x%" PRIx64 ", is created, data:%p", showId, pShow);
  return pShow;
}

static void mndFreeShowObj(SShowObj *pShow) {
  SMnode    *pMnode = pShow->pMnode;
  SShowMgmt *pMgmt = &pMnode->showMgmt;

  ShowFreeIterFp freeFp = pMgmt->freeIterFps[pShow->type];
  if (freeFp != NULL) {
    if (pShow->pIter != NULL) {
      mTrace("show:0x%" PRIx64 ", is destroying, data:%p, pIter:%p, ", pShow->id, pShow, pShow->pIter);

      (*freeFp)(pMnode, pShow->pIter);

      pShow->pIter = NULL;
    }
  }

  mTrace("show:0x%" PRIx64 ", is destroyed, data:%p", pShow->id, pShow);
}

static SShowObj *mndAcquireShowObj(SMnode *pMnode, int64_t showId) {
  SShowMgmt *pMgmt = &pMnode->showMgmt;

  SShowObj *pShow = taosCacheAcquireByKey(pMgmt->cache, &showId, sizeof(showId));
  if (pShow == NULL) {
    mError("show:0x%" PRIx64 ", already destroyed", showId);
    return NULL;
  }

  mTrace("show:0x%" PRIx64 ", acquired from cache, data:%p", pShow->id, pShow);
  return pShow;
}

static void mndReleaseShowObj(SShowObj *pShow, bool forceRemove) {
  if (pShow == NULL) return;
  mTrace("show:0x%" PRIx64 ", released from cache, data:%p force:%d", pShow->id, pShow, forceRemove);

  // A bug in tcache.c
  forceRemove = 0;

  SMnode    *pMnode = pShow->pMnode;
  SShowMgmt *pMgmt = &pMnode->showMgmt;
  taosCacheRelease(pMgmt->cache, (void **)(&pShow), forceRemove);
}

static int32_t mndProcessRetrieveSysTableReq(SRpcMsg *pReq) {
  int32_t    code = 0;
  SMnode    *pMnode = pReq->info.node;
  SShowMgmt *pMgmt = &pMnode->showMgmt;
  SShowObj  *pShow = NULL;
  int32_t    rowsToRead = SHOW_STEP_SIZE;
  int32_t    size = 0;
  int32_t    rowsRead = 0;
  mDebug("mndProcessRetrieveSysTableReq start");
  SRetrieveTableReq retrieveReq = {0};
  TAOS_CHECK_RETURN(tDeserializeSRetrieveTableReq(pReq->pCont, pReq->contLen, &retrieveReq));

  mDebug("process to retrieve systable req db:%s, tb:%s, compactId:%" PRId64, retrieveReq.db, retrieveReq.tb,
         retrieveReq.compactId);

  if (retrieveReq.showId == 0) {
    STableMetaRsp *pMeta = taosHashGet(pMnode->infosMeta, retrieveReq.tb, strlen(retrieveReq.tb));
    if (pMeta == NULL) {
      pMeta = taosHashGet(pMnode->perfsMeta, retrieveReq.tb, strlen(retrieveReq.tb));
      if (pMeta == NULL) {
        code = TSDB_CODE_PAR_TABLE_NOT_EXIST;
        mError("failed to process show-retrieve req:%p since %s", pShow, tstrerror(code));
        TAOS_RETURN(code);
      }
    }

    pShow = mndCreateShowObj(pMnode, &retrieveReq);
    if (pShow == NULL) {
      code = terrno;
      mError("failed to process show-meta req since %s", tstrerror(code));
      TAOS_RETURN(code);
    }

    pShow->pMeta = pMeta;
    pShow->numOfColumns = pShow->pMeta->numOfColumns;
  } else {
    pShow = mndAcquireShowObj(pMnode, retrieveReq.showId);
    if (pShow == NULL) {
      code = TSDB_CODE_MND_INVALID_SHOWOBJ;
      mError("failed to process show-retrieve req:%p since %s", pShow, tstrerror(code));
      TAOS_RETURN(code);
    }
  }

  if (pShow->type == TSDB_MGMT_TABLE_COL) {  // expend capacity for ins_columns
    rowsToRead = SHOW_COLS_STEP_SIZE;
  } else if (pShow->type == TSDB_MGMT_TABLE_PRIVILEGES) {
    rowsToRead = SHOW_PRIVILEGES_STEP_SIZE;
  }
  ShowRetrieveFp retrieveFp = pMgmt->retrieveFps[pShow->type];
  if (retrieveFp == NULL) {
    mndReleaseShowObj(pShow, false);
    code = TSDB_CODE_MSG_NOT_PROCESSED;
    mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(code));
    TAOS_RETURN(code);
  }

  mDebug("show:0x%" PRIx64 ", start retrieve data, type:%d", pShow->id, pShow->type);
  if (retrieveReq.user[0] != 0) {
    (void)memcpy(pReq->info.conn.user, retrieveReq.user, TSDB_USER_LEN);
  } else {
    (void)memcpy(pReq->info.conn.user, TSDB_DEFAULT_USER, strlen(TSDB_DEFAULT_USER) + 1);
  }
  code = -1;
  if (retrieveReq.db[0] &&
      (code = mndCheckShowPrivilege(pMnode, pReq->info.conn.user, pShow->type, retrieveReq.db)) != 0) {
    TAOS_RETURN(code);
  }
  if (pShow->type == TSDB_MGMT_TABLE_USER_FULL) {
    if (strcmp(pReq->info.conn.user, "root") != 0) {
      mError("The operation is not permitted, user:%s, pShow->type:%d", pReq->info.conn.user, pShow->type);
      code = TSDB_CODE_MND_NO_RIGHTS;
      TAOS_RETURN(code);
    }
  }

  int32_t numOfCols = pShow->pMeta->numOfColumns;

  SSDataBlock *pBlock = NULL;
  code = createDataBlock(&pBlock);
  if (code) {
    TAOS_RETURN(code);
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    SColumnInfoData idata = {0};

    SSchema *p = &pShow->pMeta->pSchemas[i];

    idata.info.bytes = p->bytes;
    idata.info.type = p->type;
    idata.info.colId = p->colId;
    TAOS_CHECK_RETURN(blockDataAppendColInfo(pBlock, &idata));
  }

  TAOS_CHECK_RETURN(blockDataEnsureCapacity(pBlock, rowsToRead));

  if (mndCheckRetrieveFinished(pShow)) {
    mDebug("show:0x%" PRIx64 ", read finished, numOfRows:%d", pShow->id, pShow->numOfRows);
    rowsRead = 0;
  } else {
    rowsRead = (*retrieveFp)(pReq, pShow, pBlock, rowsToRead);
    if (rowsRead < 0) {
      code = rowsRead;
      mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);
      mndReleaseShowObj(pShow, true);
      blockDataDestroy(pBlock);
      TAOS_RETURN(code);
    }

    pBlock->info.rows = rowsRead;
    mDebug("show:0x%" PRIx64 ", stop retrieve data, rowsRead:%d numOfRows:%d", pShow->id, rowsRead, pShow->numOfRows);
  }

  size_t dataEncodeBufSize = blockGetEncodeSize(pBlock);
  size = sizeof(SRetrieveMetaTableRsp) + sizeof(int32_t) + sizeof(SSysTableSchema) * pShow->pMeta->numOfColumns +
         dataEncodeBufSize;

  SRetrieveMetaTableRsp *pRsp = rpcMallocCont(size);
  if (pRsp == NULL) {
    mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(terrno));
    code = terrno;
    goto _exit;
  }

  pRsp->handle = htobe64(pShow->id);

  if (rowsRead > 0) {
    char    *pStart = pRsp->data;
    SSchema *ps = pShow->pMeta->pSchemas;

    *(int32_t *)pStart = htonl(pShow->pMeta->numOfColumns);
    pStart += sizeof(int32_t);  // number of columns

    for (int32_t i = 0; i < pShow->pMeta->numOfColumns; ++i) {
      SSysTableSchema *pSchema = (SSysTableSchema *)pStart;
      pSchema->bytes = htonl(ps[i].bytes);
      pSchema->colId = htons(ps[i].colId);
      pSchema->type = ps[i].type;

      pStart += sizeof(SSysTableSchema);
    }

    int32_t len = blockEncode(pBlock, pStart, dataEncodeBufSize, pShow->pMeta->numOfColumns);
    if (len < 0) {
      mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(terrno));
      code = terrno;
      return code;
    }
  }

  pRsp->numOfRows = htonl(rowsRead);
  pRsp->precision = TSDB_TIME_PRECISION_MILLI;  // millisecond time precision
  pReq->info.rsp = pRsp;
  pReq->info.rspLen = size;

  if (rowsRead == 0 || mndCheckRetrieveFinished(pShow)) {
    pRsp->completed = 1;
    mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);
    mndReleaseShowObj(pShow, true);
  } else {
    mDebug("show:0x%" PRIx64 ", retrieve not completed yet", pShow->id);
    mndReleaseShowObj(pShow, false);
  }

  blockDataDestroy(pBlock);
  return TSDB_CODE_SUCCESS;
_exit:
  mndReleaseShowObj(pShow, false);
  blockDataDestroy(pBlock);
  if (pRsp) {
    rpcFreeCont(pRsp);
  }
  return code;
}

static bool mndCheckRetrieveFinished(SShowObj *pShow) {
  if (pShow->pIter == NULL && pShow->numOfRows != 0) {
    return true;
  }
  return false;
}

void mndAddShowRetrieveHandle(SMnode *pMnode, EShowType showType, ShowRetrieveFp fp) {
  SShowMgmt *pMgmt = &pMnode->showMgmt;
  pMgmt->retrieveFps[showType] = fp;
}

void mndAddShowFreeIterHandle(SMnode *pMnode, EShowType showType, ShowFreeIterFp fp) {
  SShowMgmt *pMgmt = &pMnode->showMgmt;
  pMgmt->freeIterFps[showType] = fp;
}

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 "mndShow.h"
18	#include "mndPrivilege.h"
19	#include "mndUser.h"
20	#include "systable.h"
21
22	#define SHOW_STEP_SIZE 100
23	#define SHOW_COLS_STEP_SIZE 4096
24	#define SHOW_PRIVILEGES_STEP_SIZE 2048
25
26	static SShowObj mndCreateShowObj(SMnode pMnode, SRetrieveTableReq *pReq);
27	static void mndFreeShowObj(SShowObj *pShow);
28	static SShowObj mndAcquireShowObj(SMnode pMnode, int64_t showId);
29	static void mndReleaseShowObj(SShowObj *pShow, bool forceRemove);
30	static bool mndCheckRetrieveFinished(SShowObj *pShow);
31	static int32_t mndProcessRetrieveSysTableReq(SRpcMsg *pReq);
32
33	int32_t mndInitShow(SMnode *pMnode) {	550,871✔
34	int32_t code = 0;	550,871✔
35	SShowMgmt *pMgmt = &pMnode->showMgmt;	550,871✔
36
37	pMgmt->cache = taosCacheInit(TSDB_DATA_TYPE_INT, 5000, true, (__cache_free_fn_t)mndFreeShowObj, "show");	550,871✔
38	if (pMgmt->cache == NULL) {	550,871!
39	code = TSDB_CODE_OUT_OF_MEMORY;	×
40	mError("failed to alloc show cache since %s", tstrerror(code));	×
41	TAOS_RETURN(code);	×
42	}
43
44	mndSetMsgHandle(pMnode, TDMT_MND_SYSTABLE_RETRIEVE, mndProcessRetrieveSysTableReq);	550,871✔
45	TAOS_RETURN(code);	550,871✔
46	}
47
48	void mndCleanupShow(SMnode *pMnode) {	550,647✔
49	SShowMgmt *pMgmt = &pMnode->showMgmt;	550,647✔
50	if (pMgmt->cache != NULL) {	550,647!
51	taosCacheCleanup(pMgmt->cache);	550,647✔
52	pMgmt->cache = NULL;	550,647✔
53	}
54	}	550,647✔
55
56	static int32_t convertToRetrieveType(char *name, int32_t len) {	4,966,906✔
57	int32_t type = -1;	4,966,906✔
58
59	if (strncasecmp(name, TSDB_INS_TABLE_DNODES, len) == 0) {	4,966,906✔
60	type = TSDB_MGMT_TABLE_DNODE;	1,019,670✔
61	} else if (strncasecmp(name, TSDB_INS_TABLE_MNODES, len) == 0) {	3,947,236✔
62	type = TSDB_MGMT_TABLE_MNODE;	427,415✔
63	/*
64	} else if (strncasecmp(name, TSDB_INS_TABLE_MODULES, len) == 0) {
65	type = TSDB_MGMT_TABLE_MODULE;
66	*/
67	} else if (strncasecmp(name, TSDB_INS_TABLE_QNODES, len) == 0) {	3,519,821!
68	type = TSDB_MGMT_TABLE_QNODE;	10,697✔
69	} else if (strncasecmp(name, TSDB_INS_TABLE_SNODES, len) == 0) {	3,509,124✔
70	type = TSDB_MGMT_TABLE_SNODE;	217,951✔
71	} else if (strncasecmp(name, TSDB_INS_TABLE_ANODES, len) == 0) {	3,291,173!
72	type = TSDB_MGMT_TABLE_ANODE;	504✔
73	} else if (strncasecmp(name, TSDB_INS_TABLE_ANODES_FULL, len) == 0) {	3,290,669!
74	type = TSDB_MGMT_TABLE_ANODE_FULL;	×
75	} else if (strncasecmp(name, TSDB_INS_TABLE_BNODES, len) == 0) {	3,290,669!
76	type = TSDB_MGMT_TABLE_BNODE;	164,978✔
77	} else if (strncasecmp(name, TSDB_INS_TABLE_ARBGROUPS, len) == 0) {	3,125,691!
78	type = TSDB_MGMT_TABLE_ARBGROUP;	9,084✔
79	} else if (strncasecmp(name, TSDB_INS_TABLE_CLUSTER, len) == 0) {	3,116,607✔
80	type = TSDB_MGMT_TABLE_CLUSTER;	3,829✔
81	} else if (strncasecmp(name, TSDB_INS_TABLE_DATABASES, len) == 0) {	3,112,778!
82	type = TSDB_MGMT_TABLE_DB;	674,035✔
83	} else if (strncasecmp(name, TSDB_INS_TABLE_FUNCTIONS, len) == 0) {	2,438,743✔
84	type = TSDB_MGMT_TABLE_FUNC;	11,306✔
85	} else if (strncasecmp(name, TSDB_INS_TABLE_INDEXES, len) == 0) {	2,427,437!
86	type = TSDB_MGMT_TABLE_INDEX;	15,609✔
87	} else if (strncasecmp(name, TSDB_INS_TABLE_STABLES, len) == 0) {	2,411,828✔
88	type = TSDB_MGMT_TABLE_STB;	386,564✔
89	} else if (strncasecmp(name, TSDB_INS_TABLE_TABLES, len) == 0) {	2,025,264!
90	type = TSDB_MGMT_TABLE_TABLE;	×
91	} else if (strncasecmp(name, TSDB_INS_TABLE_TAGS, len) == 0) {	2,025,264!
92	type = TSDB_MGMT_TABLE_TAG;	×
93	} else if (strncasecmp(name, TSDB_INS_TABLE_COLS, len) == 0) {	2,025,264!
94	type = TSDB_MGMT_TABLE_COL;	496,328✔
95	} else if (strncasecmp(name, TSDB_INS_TABLE_TABLE_DISTRIBUTED, len) == 0) {	1,528,936!
96	// type = TSDB_MGMT_TABLE_DIST;
97	} else if (strncasecmp(name, TSDB_INS_TABLE_USERS, len) == 0) {	1,528,936!
98	type = TSDB_MGMT_TABLE_USER;	25,423✔
99	} else if (strncasecmp(name, TSDB_INS_TABLE_USERS_FULL, len) == 0) {	1,503,513!
100	type = TSDB_MGMT_TABLE_USER_FULL;	×
101	} else if (strncasecmp(name, TSDB_INS_TABLE_LICENCES, len) == 0) {	1,503,513!
102	type = TSDB_MGMT_TABLE_GRANTS;	4,385✔
103	} else if (strncasecmp(name, TSDB_INS_TABLE_VGROUPS, len) == 0) {	1,499,128!
104	type = TSDB_MGMT_TABLE_VGROUP;	291,431✔
105	} else if (strncasecmp(name, TSDB_PERFS_TABLE_CONSUMERS, len) == 0) {	1,207,697!
106	type = TSDB_MGMT_TABLE_CONSUMERS;	11,680✔
107	} else if (strncasecmp(name, TSDB_INS_TABLE_SUBSCRIPTIONS, len) == 0) {	1,196,017!
108	type = TSDB_MGMT_TABLE_SUBSCRIPTIONS;	13,572✔
109	} else if (strncasecmp(name, TSDB_PERFS_TABLE_TRANS, len) == 0) {	1,182,445!
110	type = TSDB_MGMT_TABLE_TRANS;	202,488✔
111	} else if (strncasecmp(name, TSDB_PERFS_TABLE_SMAS, len) == 0) {	979,957!
112	type = TSDB_MGMT_TABLE_SMAS;	×
113	} else if (strncasecmp(name, TSDB_INS_TABLE_CONFIGS, len) == 0) {	979,957!
114	type = TSDB_MGMT_TABLE_CONFIGS;	3,528✔
115	} else if (strncasecmp(name, TSDB_PERFS_TABLE_CONNECTIONS, len) == 0) {	976,429✔
116	type = TSDB_MGMT_TABLE_CONNS;	21,428✔
117	} else if (strncasecmp(name, TSDB_PERFS_TABLE_QUERIES, len) == 0) {	955,001✔
118	type = TSDB_MGMT_TABLE_QUERIES;	8,403✔
119	} else if (strncasecmp(name, TSDB_INS_TABLE_VNODES, len) == 0) {	946,598!
120	type = TSDB_MGMT_TABLE_VNODES;	1,909✔
121	} else if (strncasecmp(name, TSDB_INS_TABLE_TOPICS, len) == 0) {	944,689!
122	type = TSDB_MGMT_TABLE_TOPICS;	35,165✔
123	} else if (strncasecmp(name, TSDB_INS_TABLE_STREAMS, len) == 0) {	909,524✔
124	type = TSDB_MGMT_TABLE_STREAMS;	355,232✔
125	} else if (strncasecmp(name, TSDB_PERFS_TABLE_APPS, len) == 0) {	554,292!
126	type = TSDB_MGMT_TABLE_APPS;	7,314✔
127	} else if (strncasecmp(name, TSDB_INS_TABLE_STREAM_TASKS, len) == 0) {	546,978✔
128	type = TSDB_MGMT_TABLE_STREAM_TASKS;	242,774✔
129	} else if (strncasecmp(name, TSDB_INS_TABLE_STREAM_RECALCULATES, len) == 0) {	304,204!
130	type = TSDB_MGMT_TABLE_STREAM_RECALCULATES;	575✔
131	} else if (strncasecmp(name, TSDB_INS_TABLE_USER_PRIVILEGES, len) == 0) {	303,629!
132	type = TSDB_MGMT_TABLE_PRIVILEGES;	25,481✔
133	} else if (strncasecmp(name, TSDB_INS_TABLE_VIEWS, len) == 0) {	278,148!
134	type = TSDB_MGMT_TABLE_VIEWS;	34,119✔
135	} else if (strncasecmp(name, TSDB_INS_TABLE_COMPACTS, len) == 0) {	244,029!
136	type = TSDB_MGMT_TABLE_COMPACT;	172,546✔
137	} else if (strncasecmp(name, TSDB_INS_TABLE_SCANS, len) == 0) {	71,483!
138	type = TSDB_MGMT_TABLE_SCAN;	4,316✔
139	} else if (strncasecmp(name, TSDB_INS_TABLE_COMPACT_DETAILS, len) == 0) {	67,167!
140	type = TSDB_MGMT_TABLE_COMPACT_DETAIL;	4,667✔
141	} else if (strncasecmp(name, TSDB_INS_TABLE_SCAN_DETAILS, len) == 0) {	62,500!
142	type = TSDB_MGMT_TABLE_SCAN_DETAIL;	4,200✔
143	} else if (strncasecmp(name, TSDB_INS_TABLE_SSMIGRATES, len) == 0) {	58,300!
144	type = TSDB_MGMT_TABLE_SSMIGRATE;	×
145	} else if (strncasecmp(name, TSDB_INS_TABLE_TRANSACTION_DETAILS, len) == 0) {	58,300!
146	type = TSDB_MGMT_TABLE_TRANSACTION_DETAIL;	270✔
147	} else if (strncasecmp(name, TSDB_INS_TABLE_GRANTS_FULL, len) == 0) {	58,030!
148	type = TSDB_MGMT_TABLE_GRANTS_FULL;	3,147✔
149	} else if (strncasecmp(name, TSDB_INS_TABLE_GRANTS_LOGS, len) == 0) {	54,883!
150	type = TSDB_MGMT_TABLE_GRANTS_LOGS;	3,147✔
151	} else if (strncasecmp(name, TSDB_INS_TABLE_MACHINES, len) == 0) {	51,736!
152	type = TSDB_MGMT_TABLE_MACHINES;	3,556✔
153	} else if (strncasecmp(name, TSDB_INS_TABLE_ENCRYPTIONS, len) == 0) {	48,180!
154	type = TSDB_MGMT_TABLE_ENCRYPTIONS;	997✔
155	} else if (strncasecmp(name, TSDB_INS_TABLE_TSMAS, len) == 0) {	47,183!
156	type = TSDB_MGMT_TABLE_TSMAS;	×
157	} else if (strncasecmp(name, TSDB_INS_DISK_USAGE, len) == 0) {	47,183!
158	type = TSDB_MGMT_TABLE_USAGE;	×
159	} else if (strncasecmp(name, TSDB_INS_TABLE_FILESETS, len) == 0) {	47,183!
160	type = TSDB_MGMT_TABLE_FILESETS;	×
161	} else if (strncasecmp(name, TSDB_INS_TABLE_VC_COLS, len) == 0) {	47,183!
162	type = TSDB_MGMT_TABLE_VC_COL;	×
163	} else if (strncasecmp(name, TSDB_INS_TABLE_MOUNTS, len) == 0) {	47,183!
164	type = TSDB_MGMT_TABLE_MOUNT;	7,871✔
165	} else if (strncasecmp(name, TSDB_INS_TABLE_RSMAS, len) == 0) {	39,312!
166	type = TSDB_MGMT_TABLE_RSMA;	10,080✔
167	} else if (strncasecmp(name, TSDB_INS_TABLE_RETENTIONS, len) == 0) {	29,232!
168	type = TSDB_MGMT_TABLE_RETENTION;	27,720✔
169	} else if (strncasecmp(name, TSDB_INS_TABLE_RETENTION_DETAILS, len) == 0) {	1,512!
170	type = TSDB_MGMT_TABLE_RETENTION_DETAIL;	1,512✔
171	} else {
172	mError("invalid show name:%s len:%d", name, len);	×
173	}
174
175	return type;	4,966,906✔
176	}
177
178	static SShowObj mndCreateShowObj(SMnode pMnode, SRetrieveTableReq *pReq) {	4,966,906✔
179	SShowMgmt *pMgmt = &pMnode->showMgmt;	4,966,906✔
180
181	int64_t showId = atomic_add_fetch_64(&pMgmt->showId, 1);	4,966,906✔
182	if (showId == 0) atomic_add_fetch_64(&pMgmt->showId, 1);	4,966,906!
183
184	int32_t size = sizeof(SShowObj);	4,966,906✔
185
186	SShowObj showObj = {0};	4,966,906✔
187
188	showObj.id = showId;	4,966,906✔
189	showObj.pMnode = pMnode;	4,966,906✔
190	showObj.type = convertToRetrieveType(pReq->tb, tListLen(pReq->tb));	4,966,906✔
191	(void)memcpy(showObj.db, pReq->db, TSDB_DB_FNAME_LEN);	4,966,906✔
192	tstrncpy(showObj.filterTb, pReq->filterTb, TSDB_TABLE_NAME_LEN);	4,966,906!
193
194	int32_t keepTime = tsShellActivityTimer * 6 * 1000;	4,966,906✔
195	SShowObj *pShow = taosCachePut(pMgmt->cache, &showId, sizeof(int64_t), &showObj, size, keepTime);	4,966,906✔
196	if (pShow == NULL) {	4,966,906!
197	terrno = TSDB_CODE_OUT_OF_MEMORY;	×
198	mError("show:0x%" PRIx64 ", failed to put into cache since %s", showId, terrstr());	×
199	return NULL;	×
200	}
201
202	mTrace("show:0x%" PRIx64 ", is created, data:%p", showId, pShow);	4,966,906✔
203	return pShow;	4,966,906✔
204	}
205
206	static void mndFreeShowObj(SShowObj *pShow) {	4,966,906✔
207	SMnode *pMnode = pShow->pMnode;	4,966,906✔
208	SShowMgmt *pMgmt = &pMnode->showMgmt;	4,966,906✔
209
210	ShowFreeIterFp freeFp = pMgmt->freeIterFps[pShow->type];	4,966,906✔
211	if (freeFp != NULL) {	4,966,906✔
212	if (pShow->pIter != NULL) {	4,765,823✔
213	mTrace("show:0x%" PRIx64 ", is destroying, data:%p, pIter:%p, ", pShow->id, pShow, pShow->pIter);	123!
214
215	(*freeFp)(pMnode, pShow->pIter);	123✔
216
217	pShow->pIter = NULL;	123✔
218	}
219	}
220
221	mTrace("show:0x%" PRIx64 ", is destroyed, data:%p", pShow->id, pShow);	4,966,906✔
222	}	4,966,906✔
223
224	static SShowObj mndAcquireShowObj(SMnode pMnode, int64_t showId) {	93,939✔
225	SShowMgmt *pMgmt = &pMnode->showMgmt;	93,939✔
226
227	SShowObj *pShow = taosCacheAcquireByKey(pMgmt->cache, &showId, sizeof(showId));	93,939✔
228	if (pShow == NULL) {	93,939!
229	mError("show:0x%" PRIx64 ", already destroyed", showId);	×
230	return NULL;	×
231	}
232
233	mTrace("show:0x%" PRIx64 ", acquired from cache, data:%p", pShow->id, pShow);	93,939!
234	return pShow;	93,939✔
235	}
236
237	static void mndReleaseShowObj(SShowObj *pShow, bool forceRemove) {	5,058,533✔
238	if (pShow == NULL) return;	5,058,533!
239	mTrace("show:0x%" PRIx64 ", released from cache, data:%p force:%d", pShow->id, pShow, forceRemove);	5,058,533✔
240
241	// A bug in tcache.c
242	forceRemove = 0;	5,058,533✔
243
244	SMnode *pMnode = pShow->pMnode;	5,058,533✔
245	SShowMgmt *pMgmt = &pMnode->showMgmt;	5,058,533✔
246	taosCacheRelease(pMgmt->cache, (void **)(&pShow), forceRemove);	5,058,533✔
247	}
248
249	static int32_t mndProcessRetrieveSysTableReq(SRpcMsg *pReq) {	5,060,863✔
250	int32_t code = 0;	5,060,863✔
251	SMnode *pMnode = pReq->info.node;	5,060,863✔
252	SShowMgmt *pMgmt = &pMnode->showMgmt;	5,060,863✔
253	SShowObj *pShow = NULL;	5,060,863✔
254	int32_t rowsToRead = SHOW_STEP_SIZE;	5,060,863✔
255	int32_t size = 0;	5,060,863✔
256	int32_t rowsRead = 0;	5,060,863✔
257	mDebug("mndProcessRetrieveSysTableReq start");	5,060,863✔
258	SRetrieveTableReq retrieveReq = {0};	5,060,863✔
259	TAOS_CHECK_RETURN(tDeserializeSRetrieveTableReq(pReq->pCont, pReq->contLen, &retrieveReq));	5,060,863✔
260
261	mDebug("process to retrieve systable req db:%s, tb:%s, compactId:%" PRId64, retrieveReq.db, retrieveReq.tb,	5,060,845✔
262	retrieveReq.compactId);
263
264	if (retrieveReq.showId == 0) {	5,060,845✔
265	STableMetaRsp *pMeta = taosHashGet(pMnode->infosMeta, retrieveReq.tb, strlen(retrieveReq.tb));	4,966,906✔
266	if (pMeta == NULL) {	4,966,906✔
267	pMeta = taosHashGet(pMnode->perfsMeta, retrieveReq.tb, strlen(retrieveReq.tb));	251,313✔
268	if (pMeta == NULL) {	251,313!
269	code = TSDB_CODE_PAR_TABLE_NOT_EXIST;	×
270	mError("failed to process show-retrieve req:%p since %s", pShow, tstrerror(code));	×
271	TAOS_RETURN(code);	×
272	}
273	}
274
275	pShow = mndCreateShowObj(pMnode, &retrieveReq);	4,966,906✔
276	if (pShow == NULL) {	4,966,906!
277	code = terrno;	×
278	mError("failed to process show-meta req since %s", tstrerror(code));	×
279	TAOS_RETURN(code);	×
280	}
281
282	pShow->pMeta = pMeta;	4,966,906✔
283	pShow->numOfColumns = pShow->pMeta->numOfColumns;	4,966,906✔
284	} else {
285	pShow = mndAcquireShowObj(pMnode, retrieveReq.showId);	93,939✔
286	if (pShow == NULL) {	93,939!
287	code = TSDB_CODE_MND_INVALID_SHOWOBJ;	×
288	mError("failed to process show-retrieve req:%p since %s", pShow, tstrerror(code));	×
289	TAOS_RETURN(code);	×
290	}
291	}
292
293	if (pShow->type == TSDB_MGMT_TABLE_COL) { // expend capacity for ins_columns	5,060,845✔
294	rowsToRead = SHOW_COLS_STEP_SIZE;	499,280✔
295	} else if (pShow->type == TSDB_MGMT_TABLE_PRIVILEGES) {	4,561,565✔
296	rowsToRead = SHOW_PRIVILEGES_STEP_SIZE;	25,481✔
297	}
298	ShowRetrieveFp retrieveFp = pMgmt->retrieveFps[pShow->type];	5,060,845✔
299	if (retrieveFp == NULL) {	5,060,845!
300	mndReleaseShowObj(pShow, false);	×
301	code = TSDB_CODE_MSG_NOT_PROCESSED;	×
302	mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(code));	×
303	TAOS_RETURN(code);	×
304	}
305
306	mDebug("show:0x%" PRIx64 ", start retrieve data, type:%d", pShow->id, pShow->type);	5,060,845✔
307	if (retrieveReq.user[0] != 0) {	5,060,845✔
308	(void)memcpy(pReq->info.conn.user, retrieveReq.user, TSDB_USER_LEN);	5,060,647✔
309	} else {
310	(void)memcpy(pReq->info.conn.user, TSDB_DEFAULT_USER, strlen(TSDB_DEFAULT_USER) + 1);	198!
311	}
312	code = -1;	5,060,845✔
313	if (retrieveReq.db[0] &&	7,465,963✔
314	(code = mndCheckShowPrivilege(pMnode, pReq->info.conn.user, pShow->type, retrieveReq.db)) != 0) {	2,405,118✔
315	TAOS_RETURN(code);	2,312✔
316	}
317	if (pShow->type == TSDB_MGMT_TABLE_USER_FULL) {	5,058,533!
318	if (strcmp(pReq->info.conn.user, "root") != 0) {	×
319	mError("The operation is not permitted, user:%s, pShow->type:%d", pReq->info.conn.user, pShow->type);	×
320	code = TSDB_CODE_MND_NO_RIGHTS;	×
321	TAOS_RETURN(code);	×
322	}
323	}
324
325	int32_t numOfCols = pShow->pMeta->numOfColumns;	5,058,533✔
326
327	SSDataBlock *pBlock = NULL;	5,058,533✔
328	code = createDataBlock(&pBlock);	5,058,533✔
329	if (code) {	5,058,533!
330	TAOS_RETURN(code);	×
331	}
332
333	for (int32_t i = 0; i < numOfCols; ++i) {	72,327,320✔
334	SColumnInfoData idata = {0};	67,268,787✔
335
336	SSchema *p = &pShow->pMeta->pSchemas[i];	67,268,787✔
337
338	idata.info.bytes = p->bytes;	67,268,787✔
339	idata.info.type = p->type;	67,268,787✔
340	idata.info.colId = p->colId;	67,268,787✔
341	TAOS_CHECK_RETURN(blockDataAppendColInfo(pBlock, &idata));	67,268,787!
342	}
343
344	TAOS_CHECK_RETURN(blockDataEnsureCapacity(pBlock, rowsToRead));	5,058,533!
345
346	if (mndCheckRetrieveFinished(pShow)) {	5,058,533!
347	mDebug("show:0x%" PRIx64 ", read finished, numOfRows:%d", pShow->id, pShow->numOfRows);	×
348	rowsRead = 0;	×
349	} else {
350	rowsRead = (*retrieveFp)(pReq, pShow, pBlock, rowsToRead);	5,058,533✔
351	if (rowsRead < 0) {	5,058,533✔
352	code = rowsRead;	1,513✔
353	mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);	1,513!
354	mndReleaseShowObj(pShow, true);	1,513✔
355	blockDataDestroy(pBlock);	1,513✔
356	TAOS_RETURN(code);	1,513✔
357	}
358
359	pBlock->info.rows = rowsRead;	5,057,020✔
360	mDebug("show:0x%" PRIx64 ", stop retrieve data, rowsRead:%d numOfRows:%d", pShow->id, rowsRead, pShow->numOfRows);	5,057,020✔
361	}
362
363	size_t dataEncodeBufSize = blockGetEncodeSize(pBlock);	5,057,020✔
364	size = sizeof(SRetrieveMetaTableRsp) + sizeof(int32_t) + sizeof(SSysTableSchema) * pShow->pMeta->numOfColumns +	5,057,020✔
365	dataEncodeBufSize;
366
367	SRetrieveMetaTableRsp *pRsp = rpcMallocCont(size);	5,057,020✔
368	if (pRsp == NULL) {	5,057,020!
369	mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(terrno));	×
370	code = terrno;	×
371	goto _exit;	×
372	}
373
374	pRsp->handle = htobe64(pShow->id);	5,057,020✔
375
376	if (rowsRead > 0) {	5,057,020✔
377	char *pStart = pRsp->data;	4,685,074✔
378	SSchema *ps = pShow->pMeta->pSchemas;	4,685,074✔
379
380	(int32_t )pStart = htonl(pShow->pMeta->numOfColumns);	4,685,074✔
381	pStart += sizeof(int32_t); // number of columns	4,685,074✔
382
383	for (int32_t i = 0; i < pShow->pMeta->numOfColumns; ++i) {	68,324,211✔
384	SSysTableSchema pSchema = (SSysTableSchema )pStart;	63,639,137✔
385	pSchema->bytes = htonl(ps[i].bytes);	63,639,137✔
386	pSchema->colId = htons(ps[i].colId);	63,639,137✔
387	pSchema->type = ps[i].type;	63,639,137✔
388
389	pStart += sizeof(SSysTableSchema);	63,639,137✔
390	}
391
392	int32_t len = blockEncode(pBlock, pStart, dataEncodeBufSize, pShow->pMeta->numOfColumns);	4,685,074✔
393	if (len < 0) {	4,685,074!
394	mError("show:0x%" PRIx64 ", failed to retrieve data since %s", pShow->id, tstrerror(terrno));	×
395	code = terrno;	×
396	return code;	×
397	}
398	}
399
400	pRsp->numOfRows = htonl(rowsRead);	5,057,020✔
401	pRsp->precision = TSDB_TIME_PRECISION_MILLI; // millisecond time precision	5,057,020✔
402	pReq->info.rsp = pRsp;	5,057,020✔
403	pReq->info.rspLen = size;	5,057,020✔
404
405	if (rowsRead == 0 \|\| mndCheckRetrieveFinished(pShow)) {	5,057,020✔
406	pRsp->completed = 1;	4,962,958✔
407	mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);	4,962,958✔
408	mndReleaseShowObj(pShow, true);	4,962,958✔
409	} else {
410	mDebug("show:0x%" PRIx64 ", retrieve not completed yet", pShow->id);	94,062✔
411	mndReleaseShowObj(pShow, false);	94,062✔
412	}
413
414	blockDataDestroy(pBlock);	5,057,020✔
415	return TSDB_CODE_SUCCESS;	5,057,020✔
416	_exit:	×
417	mndReleaseShowObj(pShow, false);	×
418	blockDataDestroy(pBlock);	×
419	if (pRsp) {	×
420	rpcFreeCont(pRsp);	×
421	}
422	return code;	×
423	}
424
425	static bool mndCheckRetrieveFinished(SShowObj *pShow) {	9,743,607✔
426	if (pShow->pIter == NULL && pShow->numOfRows != 0) {	9,743,607✔
427	return true;	4,591,012✔
428	}
429	return false;	5,152,595✔
430	}
431
432	void mndAddShowRetrieveHandle(SMnode *pMnode, EShowType showType, ShowRetrieveFp fp) {	25,890,937✔
433	SShowMgmt *pMgmt = &pMnode->showMgmt;	25,890,937✔
434	pMgmt->retrieveFps[showType] = fp;	25,890,937✔
435	}	25,890,937✔
436
437	void mndAddShowFreeIterHandle(SMnode *pMnode, EShowType showType, ShowFreeIterFp fp) {	22,034,840✔
438	SShowMgmt *pMgmt = &pMnode->showMgmt;	22,034,840✔
439	pMgmt->freeIterFps[showType] = fp;	22,034,840✔
440	}	22,034,840✔

taosdata / TDengine / #4788

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