taosmsg.h

/*
 * 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/>.
 */

#ifndef TDENGINE_TAOSMSG_H
#define TDENGINE_TAOSMSG_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>
#include <stdbool.h>

#include "taosdef.h"
#include "taoserror.h"
#include "taosdef.h"
#include "trpc.h"

// message type
#define TSDB_MSG_TYPE_REG                    1
#define TSDB_MSG_TYPE_REG_RSP                2
#define TSDB_MSG_TYPE_SUBMIT                 3
#define TSDB_MSG_TYPE_SUBMIT_RSP             4
#define TSDB_MSG_TYPE_QUERY                  5
#define TSDB_MSG_TYPE_QUERY_RSP              6
#define TSDB_MSG_TYPE_RETRIEVE               7
#define TSDB_MSG_TYPE_RETRIEVE_RSP           8

// message from mnode to dnode
#define TSDB_MSG_TYPE_MD_CREATE_TABLE        9
#define TSDB_MSG_TYPE_MD_CREATE_TABLE_RSP    10
#define TSDB_MSG_TYPE_MD_DROP_TABLE          11
#define TSDB_MSG_TYPE_MD_DROP_TABLE_RSP      12
#define TSDB_MSG_TYPE_MD_ALTER_TABLE         13
#define TSDB_MSG_TYPE_MD_ALTER_TABLE_RSP     14
#define TSDB_MSG_TYPE_MD_CREATE_VNODE        15
#define TSDB_MSG_TYPE_MD_CREATE_VNODE_RSP    16
#define TSDB_MSG_TYPE_MD_DROP_VNODE          17
#define TSDB_MSG_TYPE_MD_DROP_VNODE_RSP      18
#define TSDB_MSG_TYPE_MD_ALTER_VNODE         19
#define TSDB_MSG_TYPE_MD_ALTER_VNODE_RSP     20
#define TSDB_MSG_TYPE_MD_DROP_STABLE         21
#define TSDB_MSG_TYPE_MD_DROP_STABLE_RSP     22
#define TSDB_MSG_TYPE_MD_ALTER_STREAM        23
#define TSDB_MSG_TYPE_MD_ALTER_STREAM_RSP    24
#define TSDB_MSG_TYPE_MD_CONFIG_DNODE        25
#define TSDB_MSG_TYPE_MD_CONFIG_DNODE_RSP    26

// message from client to mnode
#define TSDB_MSG_TYPE_CM_CONNECT             31
#define TSDB_MSG_TYPE_CM_CONNECT_RSP         32
#define TSDB_MSG_TYPE_CM_CREATE_ACCT         33
#define TSDB_MSG_TYPE_CM_CREATE_ACCT_RSP     34
#define TSDB_MSG_TYPE_CM_ALTER_ACCT          35
#define TSDB_MSG_TYPE_CM_ALTER_ACCT_RSP      36
#define TSDB_MSG_TYPE_CM_DROP_ACCT           37
#define TSDB_MSG_TYPE_CM_DROP_ACCT_RSP       38
#define TSDB_MSG_TYPE_CM_CREATE_USER         39
#define TSDB_MSG_TYPE_CM_CREATE_USER_RSP     40
#define TSDB_MSG_TYPE_CM_ALTER_USER          41
#define TSDB_MSG_TYPE_CM_ALTER_USER_RSP      42
#define TSDB_MSG_TYPE_CM_DROP_USER           43
#define TSDB_MSG_TYPE_CM_DROP_USER_RSP       44
#define TSDB_MSG_TYPE_CM_CREATE_DNODE        45
#define TSDB_MSG_TYPE_CM_CREATE_DNODE_RSP    46
#define TSDB_MSG_TYPE_CM_DROP_DNODE          47
#define TSDB_MSG_TYPE_CM_DROP_DNODE_RSP      48
#define TSDB_MSG_TYPE_CM_CONFIG_DNODE        TSDB_MSG_TYPE_MD_CONFIG_DNODE
#define TSDB_MSG_TYPE_CM_CONFIG_DNODE_RSP    TSDB_MSG_TYPE_MD_CONFIG_DNODE_RSP
#define TSDB_MSG_TYPE_CM_CREATE_DB           49
#define TSDB_MSG_TYPE_CM_CREATE_DB_RSP       50
#define TSDB_MSG_TYPE_CM_DROP_DB             51
#define TSDB_MSG_TYPE_CM_DROP_DB_RSP         52
#define TSDB_MSG_TYPE_CM_USE_DB              53
#define TSDB_MSG_TYPE_CM_USE_DB_RSP          54
#define TSDB_MSG_TYPE_CM_ALTER_DB            55
#define TSDB_MSG_TYPE_CM_ALTER_DB_RSP        56
#define TSDB_MSG_TYPE_CM_CREATE_TABLE        57
#define TSDB_MSG_TYPE_CM_CREATE_TABLE_RSP    58
#define TSDB_MSG_TYPE_CM_DROP_TABLE          59
#define TSDB_MSG_TYPE_CM_DROP_TABLE_RSP      60
#define TSDB_MSG_TYPE_CM_ALTER_TABLE         61
#define TSDB_MSG_TYPE_CM_ALTER_TABLE_RSP     62
#define TSDB_MSG_TYPE_CM_TABLE_META          63
#define TSDB_MSG_TYPE_CM_TABLE_META_RSP      64
#define TSDB_MSG_TYPE_CM_STABLE_META         65
#define TSDB_MSG_TYPE_CM_STABLE_META_RSP     66
#define TSDB_MSG_TYPE_CM_TABLES_META         67
#define TSDB_MSG_TYPE_CM_TABLES_META_RSP     68
#define TSDB_MSG_TYPE_CM_ALTER_STREAM        69
#define TSDB_MSG_TYPE_CM_ALTER_STREAM_RSP    70
#define TSDB_MSG_TYPE_CM_SHOW                71
#define TSDB_MSG_TYPE_CM_SHOW_RSP            72
#define TSDB_MSG_TYPE_CM_KILL_QUERY          73
#define TSDB_MSG_TYPE_CM_KILL_QUERY_RSP      74
#define TSDB_MSG_TYPE_CM_KILL_STREAM         75
#define TSDB_MSG_TYPE_CM_KILL_STREAM_RSP     76
#define TSDB_MSG_TYPE_CM_KILL_CONN           77
#define TSDB_MSG_TYPE_CM_KILL_CONN_RSP       78
#define TSDB_MSG_TYPE_CM_HEARTBEAT           79
#define TSDB_MSG_TYPE_CM_HEARTBEAT_RSP       80

// message from dnode to mnode
#define TSDB_MSG_TYPE_DM_CONFIG_TABLE        91
#define TSDB_MSG_TYPE_DM_CONFIG_TABLE_RSP    92
#define TSDB_MSG_TYPE_DM_CONFIG_VNODE        93
#define TSDB_MSG_TYPE_DM_CONFIG_VNODE_RSP    94
#define TSDB_MSG_TYPE_DM_STATUS              95
#define TSDB_MSG_TYPE_DM_STATUS_RSP          96
#define TSDB_MSG_TYPE_DM_GRANT               97
#define TSDB_MSG_TYPE_DM_GRANT_RSP           98

#define TSDB_MSG_TYPE_SDB_SYNC               101
#define TSDB_MSG_TYPE_SDB_SYNC_RSP           102
#define TSDB_MSG_TYPE_SDB_FORWARD            103
#define TSDB_MSG_TYPE_SDB_FORWARD_RSP        104

#define TSDB_MSG_TYPE_MAX                    105

// IE type
#define TSDB_IE_TYPE_SEC               1
#define TSDB_IE_TYPE_META              2
#define TSDB_IE_TYPE_MGMT_IP           3
#define TSDB_IE_TYPE_DNODE_CFG         4
#define TSDB_IE_TYPE_NEW_VERSION       5
#define TSDB_IE_TYPE_DNODE_EXT         6
#define TSDB_IE_TYPE_DNODE_STATE       7

enum _mgmt_table {
  TSDB_MGMT_TABLE_ACCT,
  TSDB_MGMT_TABLE_USER,
  TSDB_MGMT_TABLE_DB,
  TSDB_MGMT_TABLE_TABLE,
  TSDB_MGMT_TABLE_DNODE,
  TSDB_MGMT_TABLE_MNODE,
  TSDB_MGMT_TABLE_VGROUP,
  TSDB_MGMT_TABLE_METRIC,
  TSDB_MGMT_TABLE_MODULE,
  TSDB_MGMT_TABLE_QUERIES,
  TSDB_MGMT_TABLE_STREAMS,
  TSDB_MGMT_TABLE_CONFIGS,
  TSDB_MGMT_TABLE_CONNS,
  TSDB_MGMT_TABLE_SCORES,
  TSDB_MGMT_TABLE_GRANTS,
  TSDB_MGMT_TABLE_VNODES,
  TSDB_MGMT_TABLE_MAX,
};

#define TSDB_ALTER_TABLE_ADD_TAG_COLUMN     1
#define TSDB_ALTER_TABLE_DROP_TAG_COLUMN    2
#define TSDB_ALTER_TABLE_CHANGE_TAG_COLUMN  3
#define TSDB_ALTER_TABLE_UPDATE_TAG_VAL     4

#define TSDB_ALTER_TABLE_ADD_COLUMN         5
#define TSDB_ALTER_TABLE_DROP_COLUMN        6

#define TSDB_INTERPO_NONE              0
#define TSDB_INTERPO_NULL              1
#define TSDB_INTERPO_SET_VALUE         2
#define TSDB_INTERPO_LINEAR            3
#define TSDB_INTERPO_PREV              4

#define TSDB_ALTER_USER_PASSWD         0x1
#define TSDB_ALTER_USER_PRIVILEGES     0x2

#define TSDB_KILL_MSG_LEN              30

typedef enum {
  TSDB_TABLE_TYPE_SUPER_TABLE        = 0,  // super table
  TSDB_TABLE_TYPE_CHILD_TABLE        = 1,  // table created from super table
  TSDB_TABLE_TYPE_NORMAL_TABLE       = 2,  // ordinary table
  TSDB_TABLE_TYPE_STREAM_TABLE       = 3,  // table created from stream computing
  TSDB_TABLE_TYPE_MAX                = 4
} ETableType;


#define TSDB_VN_READ_ACCCESS  ((char)0x1)
#define TSDB_VN_WRITE_ACCCESS ((char)0x2)
#define TSDB_VN_ALL_ACCCESS (TSDB_VN_READ_ACCCESS | TSDB_VN_WRITE_ACCCESS)

#define TSDB_COL_NORMAL                0x0U
#define TSDB_COL_TAG                   0x1U
#define TSDB_COL_JOIN                  0x2U

extern char *taosMsg[];

#pragma pack(push, 1)

typedef struct {
  int32_t  vnode;
  int32_t  sid;
  int32_t  sversion;
  uint64_t uid;
  int16_t  numOfRows;
  char     payLoad[];
} SShellSubmitBlock;

typedef struct {
  int16_t import;
  int16_t vnode;
  int32_t numOfSid; /* total number of sid */
  char    blks[];   /* numOfSid blocks, each blocks for one table */
} SShellSubmitMsg;

typedef struct {
  int32_t index; // index of failed block in submit blocks
  int32_t vnode; // vnode index of failed block
  int32_t sid;   // table index of failed block
  int32_t code;  // errorcode while write data to vnode, such as not created, dropped, no space, invalid table
} SShellSubmitRspBlock;

typedef struct {
  int32_t code;         // 0-success, > 0 error code
  int32_t numOfRows;    // number of records the client is trying to write
  int32_t affectedRows; // number of records actually written
  int32_t failedRows;   // number of failed records (exclude duplicate records)
  int32_t numOfFailedBlocks;
  SShellSubmitRspBlock failedBlocks[];
} SShellSubmitRspMsg;

typedef struct SSchema {
  uint8_t type;
  char    name[TSDB_COL_NAME_LEN + 1];
  int16_t colId;
  int16_t bytes;
} SSchema;

typedef struct {
  int32_t  vnode;  //the index of vnode
  uint32_t ip;
} SVnodeDesc;

typedef struct {
  int8_t     tableType;
  int16_t    numOfColumns;
  int16_t    numOfTags;
  int32_t    sid;
  int32_t    sversion;
  int32_t    tagDataLen;
  int32_t    sqlDataLen;
  int32_t    contLen;
  int32_t    numOfVPeers;
  uint64_t   uid;
  uint64_t   superTableUid;
  uint64_t   createdTime;
  SVnodeDesc vpeerDesc[TSDB_MAX_MPEERS];
  char       tableId[TSDB_TABLE_ID_LEN + 1];
  char       superTableId[TSDB_TABLE_ID_LEN + 1];
  char       data[];
} SMDCreateTableMsg;

typedef struct {
  char      tableId[TSDB_TABLE_ID_LEN + 1];
  char      db[TSDB_DB_NAME_LEN + 1];
  int8_t    igExists;
  int16_t   numOfTags;
  int16_t   numOfColumns;
  int16_t   sqlLen;  // the length of SQL, it starts after schema , sql is a null-terminated string
  int16_t   reserved[16];
  char      schema[];
} SCMCreateTableMsg;

typedef struct {
  char   tableId[TSDB_TABLE_ID_LEN + 1];
  int8_t igNotExists;
} SCMDropTableMsg;

typedef struct {
  char    tableId[TSDB_TABLE_ID_LEN + 1];
  char    db[TSDB_DB_NAME_LEN + 1];
  int16_t type; /* operation type   */
  char    tagVal[TSDB_MAX_BYTES_PER_ROW];
  int8_t  numOfCols; /* number of schema */
  SSchema schema[];
} SCMAlterTableMsg;

typedef struct {
  char clientVersion[TSDB_VERSION_LEN];
  char msgVersion[TSDB_VERSION_LEN];
  char db[TSDB_TABLE_ID_LEN + 1];
} SCMConnectMsg;

typedef struct {
  char      acctId[TSDB_ACCT_LEN + 1];
  char      serverVersion[TSDB_VERSION_LEN];
  int8_t    writeAuth;
  int8_t    superAuth;
  SRpcIpSet ipList;
} SCMConnectRsp;

typedef struct {
  int32_t maxUsers;
  int32_t maxDbs;
  int32_t maxTimeSeries;
  int32_t maxConnections;
  int32_t maxStreams;
  int32_t maxPointsPerSecond;
  int64_t maxStorage;    // In unit of GB
  int64_t maxQueryTime;  // In unit of hour
  int64_t maxInbound;
  int64_t maxOutbound;
  int8_t  accessState;   // Configured only by command
} SAcctCfg;

typedef struct {
  char     user[TSDB_USER_LEN + 1];
  char     pass[TSDB_KEY_LEN + 1];
  SAcctCfg cfg;
} SCMCreateAcctMsg, SCMAlterAcctMsg;

typedef struct {
  char user[TSDB_USER_LEN + 1];
} SCMDropUserMsg, SCMDropAcctMsg;

typedef struct {
  char   user[TSDB_USER_LEN + 1];
  char   pass[TSDB_KEY_LEN + 1];
  int8_t privilege;
  int8_t flag;
} SCMCreateUserMsg, SCMAlterUserMsg;

typedef struct {
  char db[TSDB_TABLE_ID_LEN + 1];
} SMgmtHead;

typedef struct {
  int32_t    sid;
  int32_t    numOfVPeers;
  uint64_t   uid;
  SVnodeDesc vpeerDesc[TSDB_MAX_MPEERS];
  char       tableId[TSDB_TABLE_ID_LEN + 1];
} SMDDropTableMsg;

typedef struct {
  char    tableId[TSDB_TABLE_ID_LEN + 1];
  int64_t uid;
} SMDDropSTableMsg;

typedef struct {
  int32_t vgId;
  int32_t vnode;
} SMDDropVnodeMsg;

typedef struct SColIndexEx {
  int16_t colId;
  /*
   * colIdx is the index of column in latest schema of table
   * it is available in the client side. Also used to determine
   * whether current table schema is up-to-date.
   *
   * colIdxInBuf is used to denote the index of column in pQuery->colList,
   * this value is invalid in client side, as well as in cache block of vnode either.
   */
  int16_t  colIdx;
  int16_t  colIdxInBuf;
  uint16_t flag;         // denote if it is a tag or not
  char     name[TSDB_COL_NAME_LEN];
} SColIndexEx;

/* sql function msg, to describe the message to vnode about sql function
 * operations in select clause */
typedef struct SSqlFuncExprMsg {
  int16_t functionId;
  int16_t numOfParams;

  SColIndexEx colInfo;
  struct ArgElem {
    int16_t argType;
    int16_t argBytes;
    union {
      double  d;
      int64_t i64;
      char *  pz;
    } argValue;
  } arg[3];
} SSqlFuncExprMsg;

typedef struct SSqlBinaryExprInfo {
  struct tSQLBinaryExpr *pBinExpr;    /*  for binary expression */
  int32_t                numOfCols;   /*  binary expression involves the readed number of columns*/
  SColIndexEx *          pReqColumns; /*  source column list */
} SSqlBinaryExprInfo;

typedef struct SSqlFunctionExpr {
  SSqlFuncExprMsg    pBase;
  SSqlBinaryExprInfo pBinExprInfo;
  int16_t            resBytes;
  int16_t            resType;
  int16_t            interResBytes;
} SSqlFunctionExpr;

typedef struct SColumnFilterInfo {
  int16_t lowerRelOptr;
  int16_t upperRelOptr;
  int16_t filterOnBinary; /* denote if current column is binary   */

  union {
    struct {
      int64_t lowerBndi;
      int64_t upperBndi;
    };
    struct {
      double lowerBndd;
      double upperBndd;
    };
    struct {
      int64_t pz;
      int64_t len;
    };
  };
} SColumnFilterInfo;

/*
 * for client side struct, we only need the column id, type, bytes are not necessary
 * But for data in vnode side, we need all the following information.
 */
typedef struct SColumnInfo {
  int16_t            colId;
  int16_t            type;
  int16_t            bytes;
  int16_t            numOfFilters;
  SColumnFilterInfo *filters;
} SColumnInfo;

/*
 * enable vnode to understand how to group several tables with different tag;
 */
typedef struct STableSidExtInfo {
  int32_t sid;
  int64_t uid;
  TSKEY   key;   // key for subscription
  char    tags[];
} STableSidExtInfo;

/*
 * the outputCols is equalled to or larger than numOfCols
 * e.g., select min(colName), max(colName), avg(colName) from table
 * the outputCols will be 3 while the numOfCols is 1.
 */
typedef struct {
  int16_t  vnode;
  int32_t  numOfSids;
  uint64_t pSidExtInfo;  // table id & tag info ptr, in windows pointer may

  uint64_t uid;
  TSKEY    skey;
  TSKEY    ekey;

  int16_t order;
  int16_t orderColId;

  int16_t numOfCols;         // the number of columns will be load from vnode
  char    intervalTimeUnit;  // time interval type, for revisement of interval(1d)

  int64_t intervalTime;  // time interval for aggregation, in million second
  int64_t slidingTime;       // value for sliding window

  // tag schema, used to parse tag information in pSidExtInfo
  uint64_t pTagSchema;

  int16_t numOfTagsCols;  // required number of tags
  int16_t tagLength;      // tag length in current query

  int16_t  numOfGroupCols;  // num of group by columns
  int16_t  orderByIdx;
  int16_t  orderType;  // used in group by xx order by xxx
  uint64_t groupbyTagIds;

  int64_t limit;
  int64_t offset;

  int16_t queryType;        // denote another query process
  int16_t numOfOutputCols;  // final output columns numbers

  int16_t  interpoType;  // interpolate type
  uint64_t defaultVal;   // default value array list

  int32_t colNameLen;
  int64_t colNameList;

  int64_t pSqlFuncExprs;

  int32_t     tsOffset;       // offset value in current msg body, NOTE: ts list is compressed
  int32_t     tsLen;          // total length of ts comp block
  int32_t     tsNumOfBlocks;  // ts comp block numbers
  int32_t     tsOrder;        // ts comp block order
  SColumnInfo colList[];
} SQueryTableMsg;

typedef struct {
  char     code;
  uint64_t qhandle;
} SQueryTableRsp;

typedef struct {
  uint64_t qhandle;
  uint16_t free;
} SRetrieveTableMsg;

typedef struct {
  int32_t numOfRows;
  int16_t precision;
  int64_t offset;  // updated offset value for multi-vnode projection query
  int64_t useconds;
  char    data[];
} SRetrieveTableRsp;

typedef struct {
  uint32_t vnode;
  uint32_t vgId;
  uint8_t  status;
  uint8_t  dropStatus;
  uint8_t  accessState;
  int64_t  totalStorage;
  int64_t  compStorage;
  int64_t  pointsWritten;
  uint8_t  syncStatus;
  uint8_t  reserved[15];
} SVnodeLoad;

typedef struct {
  uint32_t vnode;
  char     accessState;
} SVnodeAccess;

/*
 * NOTE: sizeof(SVnodeCfg) < TSDB_FILE_HEADER_LEN / 4
 */
typedef struct {
  char     acct[TSDB_USER_LEN + 1];
  char     db[TSDB_DB_NAME_LEN + 1];
  uint32_t vgId;
  int32_t  maxSessions;
  int32_t  cacheBlockSize;
  union {
    int32_t totalBlocks;
    float   fraction;
  } cacheNumOfBlocks;
  int32_t daysPerFile;
  int32_t daysToKeep1;
  int32_t daysToKeep2;
  int32_t daysToKeep;
  int32_t commitTime;
  int32_t rowsInFileBlock;
  int16_t blocksPerTable;
  int8_t  compression;
  int8_t  commitLog;
  int8_t  replications;
  int8_t  repStrategy;
  int8_t  loadLatest;  // load into mem or not
  uint8_t precision;   // time resolution
  int8_t  reserved[16];
} SVnodeCfg, SDbCfg, SCMCreateDbMsg, SCMAlterDbMsg;

typedef struct {
  char    db[TSDB_TABLE_ID_LEN + 1];
  uint8_t ignoreNotExists;
} SCMDropDbMsg, SCMUseDbMsg;

// IMPORTANT: sizeof(SVnodeStatisticInfo) should not exceed
// TSDB_FILE_HEADER_LEN/4 - TSDB_FILE_HEADER_VERSION_SIZE
typedef struct {
  int64_t pointsWritten;  // In unit of points
  int64_t totalStorage;   // In unit of bytes
  int64_t compStorage;    // In unit of bytes
  int64_t queryTime;      // In unit of second ??
  char    reserved[64];
} SVnodeStatisticInfo;

typedef struct {
  uint32_t moduleStatus;
  uint32_t createdTime;
  uint32_t numOfVnodes;
  uint32_t reserved;
} SDnodeState;

typedef struct {
  uint32_t   version;
  uint32_t   privateIp;
  uint32_t   publicIp;
  uint32_t   lastReboot;       // time stamp for last reboot
  uint16_t   numOfTotalVnodes; // from config file
  uint16_t   openVnodes;
  uint16_t   numOfCores;
  float      diskAvailable;    // GB
  uint8_t    alternativeRole;
  uint8_t    reserve[15];
  SVnodeLoad load[];
} SDMStatusMsg;

typedef struct {
  int32_t      code;
  SDnodeState  dnodeState;
  SRpcIpSet    ipList;
  SVnodeAccess vnodeAccess[];
} SDMStatusRsp;

typedef struct {
  int32_t    vnode;
  SVnodeCfg  cfg;
  SVnodeDesc vpeerDesc[TSDB_MAX_MPEERS];
} SMDCreateVnodeMsg;

typedef struct {
  char    tableId[TSDB_TABLE_ID_LEN + 1];
  int16_t createFlag;
  char    tags[];
} SCMTableInfoMsg;

typedef struct {
  int32_t numOfTables;
  char    tableIds[];
} SCMMultiTableInfoMsg;

typedef struct {
  char    tableId[TSDB_TABLE_ID_LEN + 1];
} SCMSuperTableInfoMsg;

typedef struct {
  int32_t  numOfDnodes;
  uint32_t dnodeIps[];
} SCMSuperTableInfoRsp;

typedef struct {
  int16_t elemLen;

  char    tableId[TSDB_TABLE_ID_LEN + 1];
  int16_t orderIndex;
  int16_t orderType;  // used in group by xx order by xxx

  int16_t rel;  // denotes the relation between condition and table list

  int32_t tableCond;  // offset value of table name condition
  int32_t tableCondLen;

  int32_t cond;  // offset of column query condition
  int32_t condLen;

  int16_t tagCols[TSDB_MAX_TAGS + 1];  // required tag columns, plus one is for table name
  int16_t numOfTags;                   // required number of tags

  int16_t numOfGroupCols;  // num of group by columns
  int32_t groupbyTagColumnList;
} SSuperTableMetaElemMsg;

typedef struct {
  int32_t numOfTables;
  int32_t join;
  int32_t joinCondLen;  // for join condition
  int32_t metaElem[TSDB_MAX_JOIN_TABLE_NUM];
} SSuperTableMetaMsg;

typedef struct {
  SVnodeDesc vpeerDesc[TSDB_VNODES_SUPPORT];
  int16_t    index;  // used locally
  int32_t    numOfSids;
  int32_t    pSidExtInfoList[];  // offset value of STableSidExtInfo
} SVnodeSidList;

typedef struct {
  int32_t  numOfTables;
  int32_t  numOfVnodes;
  uint16_t tagLen; /* tag value length */
  int32_t  list[]; /* offset of SVnodeSidList, compared to the SSuperTableMeta struct */
} SSuperTableMeta;

typedef struct STableMeta {
  char    tableId[TSDB_TABLE_ID_LEN + 1];  // note: This field must be at the front
  int32_t contLen;
  uint8_t numOfTags : 6;
  uint8_t precision : 2;
  uint8_t tableType : 4;
  uint8_t index : 4;  // used locally
  int16_t numOfColumns;
  int16_t rowSize;  // used locally, calculated in client
  int16_t sversion;
  int8_t  numOfVpeers;
  SVnodeDesc vpeerDesc[TSDB_VNODES_SUPPORT];
  int32_t  sid;
  int32_t  vgid;
  uint64_t uid;
  SSchema  schema[];
} STableMeta;

typedef struct SMultiTableMeta {
  int32_t    numOfTables;
  int32_t    contLen;
  STableMeta metas[];
} SMultiTableMeta;

typedef struct {
  char name[TSDB_TABLE_ID_LEN + 1];
  char data[TSDB_MAX_TAGS_LEN];
} STagData;

/*
 * sql: show tables like '%a_%'
 * payload is the query condition, e.g., '%a_%'
 * payloadLen is the length of payload
 */
typedef struct {
  int8_t   type;
  char     db[TSDB_DB_NAME_LEN + 1];
  uint16_t payloadLen;
  char     payload[];
} SCMShowMsg;

typedef struct {
  uint64_t   qhandle;
  STableMeta tableMeta;
} SCMShowRsp;

typedef struct {
  char ip[32];
} SCMCreateDnodeMsg, SCMDropDnodeMsg;

typedef struct {
  uint32_t dnode;
  int32_t  vnode;
  int32_t  sid;
} SDMConfigTableMsg;

typedef struct {
  uint32_t dnode;
  int32_t vnode;
} SDMConfigVnodeMsg;

typedef struct {
  char ip[32];
  char config[64];
} SMDCfgDnodeMsg, SCMCfgDnodeMsg;

typedef struct {
  char     sql[TSDB_SHOW_SQL_LEN + 1];
  uint32_t queryId;
  int64_t  useconds;
  int64_t  stime;
} SQueryDesc;

typedef struct {
  char     sql[TSDB_SHOW_SQL_LEN + 1];
  uint32_t streamId;
  int64_t  num;  // number of computing/cycles
  int64_t  useconds;
  int64_t  ctime;
  int64_t  stime;
  int64_t  slidingTime;
  int64_t  interval;
} SStreamDesc;

typedef struct {
  int32_t numOfQueries;
  SQueryDesc  qdesc[];
} SQqueryList;

typedef struct {
  int32_t numOfStreams;
  SStreamDesc  sdesc[];
} SStreamList;

typedef struct {
  SQqueryList qlist;
  SStreamList slist;
} SCMHeartBeatMsg;

typedef struct {
  uint32_t  queryId;
  uint32_t  streamId;
  int8_t    killConnection;
  SRpcIpSet ipList;
} SCMHeartBeatRsp;

typedef struct {
  char queryId[TSDB_KILL_MSG_LEN + 1];
} SCMKillQueryMsg, SCMKillStreamMsg, SCMKillConnMsg;

typedef struct {
  int32_t  vnode;
  int32_t  sid;
  uint64_t uid;
  uint64_t stime;  // stream starting time
  int32_t  status;
  char     tableId[TSDB_TABLE_ID_LEN + 1];
} SMDAlterStreamMsg;

#pragma pack(pop)

#ifdef __cplusplus
}
#endif

#endif