taosmsg.h 21.2 KB
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/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef TDENGINE_TAOSMSG_H
#define TDENGINE_TAOSMSG_H

#ifdef __cplusplus
extern "C" {
#endif

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#include <stdbool.h>
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#include <stdint.h>
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#include "taosdef.h"
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#include "taoserror.h"
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#include "trpc.h"
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#include "tdataformat.h"
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// message type
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#ifdef TAOS_MESSAGE_C
#define TAOS_DEFINE_MESSAGE_TYPE( name, msg ) msg, msg "-rsp",
char *taosMsg[] = {
  "null",
#else
#define TAOS_DEFINE_MESSAGE_TYPE( name, msg ) name, name##_RSP,
enum {
  TSDB_MESSAGE_NULL = 0,
#endif

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// message from client to dnode
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SUBMIT, "submit" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_QUERY, "query" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_FETCH, "fetch" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_UPDATE_TAG_VAL, "update-tag-val" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY1, "dummy1" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY2, "dummy2" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY3, "dummy3" )
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// message from mnode to dnode
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CREATE_TABLE, "create-table" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_TABLE, "drop-table" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_ALTER_TABLE, "alter-table" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CREATE_VNODE, "create-vnode" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_VNODE, "drop-vnode" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_STABLE, "drop-stable" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_ALTER_STREAM, "alter-stream" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CONFIG_DNODE, "config-dnode" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY4, "dummy4" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY5, "dummy5" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY6, "dummy6" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY7, "dummy7" )
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// message from client to mnode
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CONNECT, "connect" )	 
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_ACCT, "create-acct" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_ACCT, "alter-acct" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_ACCT, "drop-acct" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_USER, "create-user" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_USER, "alter-user" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_USER, "drop-user" ) 
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_DNODE, "create-dnode" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_DNODE, "drop-dnode" )   
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_DB, "create-db" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_DB, "drop-db" )	  
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_USE_DB, "use-db" )	 
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_DB, "alter-db" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_TABLE, "create-table" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_TABLE, "drop-table" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_TABLE, "alter-table" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_TABLE_META, "table-meta" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_STABLE_VGROUP, "stable-vgroup" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_TABLES_META, "tables-meta" )	  
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_STREAM, "alter-stream" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_SHOW, "show" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_RETRIEVE, "retrieve" )     
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_QUERY, "kill-query" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_STREAM, "kill-stream" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_CONN, "kill-conn" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CONFIG_DNODE, "cm-config-dnode" ) 
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_HEARTBEAT, "heartbeat" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY8, "dummy8" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY9, "dummy9" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY10, "dummy10" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY11, "dummy11" )
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// message from dnode to mnode
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_CONFIG_TABLE, "config-table" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_CONFIG_VNODE, "config-vnode" )	
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_STATUS, "status" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_GRANT, "grant" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_AUTH, "auth" )
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TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY12, "dummy12" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY13, "dummy13" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DUMMY14, "dummy14" )
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#ifndef TAOS_MESSAGE_C
  TSDB_MSG_TYPE_MAX  // 105
#endif
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};
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// IE type
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#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
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enum _mgmt_table {
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  TSDB_MGMT_TABLE_ACCT,
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  TSDB_MGMT_TABLE_USER,
  TSDB_MGMT_TABLE_DB,
  TSDB_MGMT_TABLE_TABLE,
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  TSDB_MGMT_TABLE_DNODE,
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  TSDB_MGMT_TABLE_MNODE,
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  TSDB_MGMT_TABLE_VGROUP,
  TSDB_MGMT_TABLE_METRIC,
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  TSDB_MGMT_TABLE_MODULE,
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  TSDB_MGMT_TABLE_QUERIES,
  TSDB_MGMT_TABLE_STREAMS,
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  TSDB_MGMT_TABLE_CONFIGS,
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  TSDB_MGMT_TABLE_CONNS,
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  TSDB_MGMT_TABLE_SCORES,
  TSDB_MGMT_TABLE_GRANTS,
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  TSDB_MGMT_TABLE_VNODES,
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  TSDB_MGMT_TABLE_STREAMTABLES,
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  TSDB_MGMT_TABLE_MAX,
};

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#define TSDB_ALTER_TABLE_ADD_TAG_COLUMN    1
#define TSDB_ALTER_TABLE_DROP_TAG_COLUMN   2
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#define TSDB_ALTER_TABLE_CHANGE_TAG_COLUMN 3
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#define TSDB_ALTER_TABLE_UPDATE_TAG_VAL    4
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#define TSDB_ALTER_TABLE_ADD_COLUMN        5
#define TSDB_ALTER_TABLE_DROP_COLUMN       6
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#define TSDB_FILL_NONE      0
#define TSDB_FILL_NULL      1
#define TSDB_FILL_SET_VALUE 2
#define TSDB_FILL_LINEAR    3
#define TSDB_FILL_PREV      4
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#define TSDB_ALTER_USER_PASSWD 0x1
#define TSDB_ALTER_USER_PRIVILEGES 0x2
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#define TSDB_KILL_MSG_LEN 30
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#define TSDB_VN_READ_ACCCESS ((char)0x1)
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#define TSDB_VN_WRITE_ACCCESS ((char)0x2)
#define TSDB_VN_ALL_ACCCESS (TSDB_VN_READ_ACCCESS | TSDB_VN_WRITE_ACCCESS)
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#define TSDB_COL_NORMAL 0x0u
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#define TSDB_COL_TAG    0x1u
#define TSDB_COL_JOIN   0x2u
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extern char *taosMsg[];

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#pragma pack(push, 1)
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typedef struct {
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  char     fqdn[TSDB_FQDN_LEN];
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  uint16_t port;
} SIpAddr;

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typedef struct {
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  int32_t numOfVnodes;
} SMsgDesc;

typedef struct SMsgHead {
  int32_t contLen;
  int32_t vgId;
} SMsgHead;

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// Submit message for one table
typedef struct SSubmitBlk {
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  uint64_t uid;        // table unique id
  int32_t  tid;        // table id
  int32_t  padding;    // TODO just for padding here
  int32_t  sversion;   // data schema version
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  int32_t  dataLen;    // data part length, not including the SSubmitBlk head
  int32_t  schemaLen;  // schema length, if length is 0, no schema exists
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  int16_t  numOfRows;  // total number of rows in current submit block
  char     data[];
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} SSubmitBlk;

// Submit message for this TSDB
typedef struct SSubmitMsg {
  SMsgHead   header;
  int32_t    length;
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  int32_t    compressed : 2;
  int32_t    numOfBlocks : 30;
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  SSubmitBlk blocks[];
} SSubmitMsg;
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typedef struct {
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  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
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} SShellSubmitRspBlock;

typedef struct {
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  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;
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  SShellSubmitRspBlock failedBlocks[];
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} SShellSubmitRspMsg;

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typedef struct SSchema {
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  uint8_t type;
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  char    name[TSDB_COL_NAME_LEN];
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  int16_t colId;
  int16_t bytes;
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} SSchema;
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typedef struct {
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  int32_t  contLen;
  int32_t  vgId;
  int8_t   tableType;
  int16_t  numOfColumns;
  int16_t  numOfTags;
  int32_t  sid;
  int32_t  sversion;
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  int32_t  tversion;
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  int32_t  tagDataLen;
  int32_t  sqlDataLen;
  uint64_t uid;
  uint64_t superTableUid;
  uint64_t createdTime;
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  char     tableId[TSDB_TABLE_ID_LEN];
  char     superTableId[TSDB_TABLE_ID_LEN];
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  char     data[];
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} SMDCreateTableMsg;
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typedef struct {
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  char    tableId[TSDB_TABLE_ID_LEN];
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  char    db[TSDB_ACCT_LEN + TSDB_DB_NAME_LEN];
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  int8_t  igExists;
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  int8_t  getMeta;
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  int16_t numOfTags;
  int16_t numOfColumns;
  int16_t sqlLen;  // the length of SQL, it starts after schema , sql is a null-terminated string
  int32_t contLen;
  int8_t  reserved[16];
  char    schema[];
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} SCMCreateTableMsg;
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typedef struct {
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  char   tableId[TSDB_TABLE_ID_LEN];
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  int8_t igNotExists;
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} SCMDropTableMsg;
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typedef struct {
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  char    tableId[TSDB_TABLE_ID_LEN];
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  char    db[TSDB_ACCT_LEN + TSDB_DB_NAME_LEN];
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  int16_t type; /* operation type   */
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  int16_t numOfCols; /* number of schema */
  int32_t tagValLen;
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  SSchema schema[];
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  // tagVal is padded after schema
  // char    tagVal[];
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} SCMAlterTableMsg;
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typedef struct {
  SMsgHead  head;
  int64_t   uid;
  int32_t   tid;
  int16_t   tversion;
  int16_t   colId;
  int16_t   type;
  int16_t   bytes;
  int32_t   tagValLen;
  char      data[];
} SUpdateTableTagValMsg;

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typedef struct {
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  char clientVersion[TSDB_VERSION_LEN];
  char msgVersion[TSDB_VERSION_LEN];
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  char db[TSDB_TABLE_ID_LEN];
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} SCMConnectMsg;
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typedef struct {
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  char      acctId[TSDB_ACCT_LEN];
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  char      serverVersion[TSDB_VERSION_LEN];
  int8_t    writeAuth;
  int8_t    superAuth;
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  int8_t    reserved1;
  int8_t    reserved2;
  int32_t   connId;
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  SRpcIpSet ipList;
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} SCMConnectRsp;
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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;
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  int8_t  accessState;  // Configured only by command
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} SAcctCfg;
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typedef struct {
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  char     user[TSDB_USER_LEN];
  char     pass[TSDB_KEY_LEN];
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  SAcctCfg cfg;
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} SCMCreateAcctMsg, SCMAlterAcctMsg;
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typedef struct {
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  char user[TSDB_USER_LEN];
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} SCMDropUserMsg, SCMDropAcctMsg;
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typedef struct {
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  char   user[TSDB_USER_LEN];
  char   pass[TSDB_KEY_LEN];
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  int8_t privilege;
  int8_t flag;
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} SCMCreateUserMsg, SCMAlterUserMsg;
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typedef struct {
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  int32_t  contLen;
  int32_t  vgId;
  int32_t  sid;
  uint64_t uid;
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  char     tableId[TSDB_TABLE_ID_LEN];
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} SMDDropTableMsg;
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typedef struct {
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  int32_t  contLen;
  int32_t  vgId;
  uint64_t uid;
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  char    tableId[TSDB_TABLE_ID_LEN];
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} SMDDropSTableMsg;
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typedef struct {
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  int32_t vgId;
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} SMDDropVnodeMsg;
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typedef struct SColIndex {
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  int16_t  colId;      // column id
  int16_t  colIndex;   // column index in colList if it is a normal column or index in tagColList if a tag
  uint16_t flag;       // denote if it is a tag or a normal column
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  char     name[TSDB_COL_NAME_LEN];
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} SColIndex;
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/* sql function msg, to describe the message to vnode about sql function
 * operations in select clause */
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typedef struct SSqlFuncMsg {
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  int16_t functionId;
  int16_t numOfParams;

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  SColIndex colInfo;
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  struct ArgElem {
    int16_t argType;
    int16_t argBytes;
    union {
      double  d;
      int64_t i64;
      char *  pz;
    } argValue;
  } arg[3];
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} SSqlFuncMsg;
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typedef struct SExprInfo {
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  SSqlFuncMsg base;
  struct tExprNode* pExpr;
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  int16_t     bytes;
  int16_t     type;
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  int32_t     interBytes;
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} SExprInfo;
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typedef struct SColumnFilterInfo {
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  int16_t lowerRelOptr;
  int16_t upperRelOptr;
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  int16_t filterstr;   // denote if current column is char(binary/nchar)
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  union {
    struct {
      int64_t lowerBndi;
      int64_t upperBndi;
    };
    struct {
      double lowerBndd;
      double upperBndd;
    };
    struct {
      int64_t pz;
      int64_t len;
    };
  };
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} 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;
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typedef struct STableIdInfo {
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  uint64_t uid;
  int32_t  tid;
  TSKEY    key;  // last accessed ts, for subscription
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} STableIdInfo;
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typedef struct STimeWindow {
  TSKEY skey;
  TSKEY ekey;
} STimeWindow;

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/*
 * the outputCols is equalled to or larger than numOfCols
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 * e.g., select min(colName), max(colName), avg(colName) from table
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 * the outputCols will be 3 while the numOfCols is 1.
 */
typedef struct {
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  SMsgHead    head;
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  STimeWindow window;
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  int32_t     numOfTables;
  int16_t     order;
  int16_t     orderColId;
  int16_t     numOfCols;        // the number of columns will be load from vnode
  int64_t     intervalTime;     // time interval for aggregation, in million second
  int64_t     intervalOffset;   // start offset for interval query
  int64_t     slidingTime;      // value for sliding window
  char        slidingTimeUnit;  // time interval type, for revisement of interval(1d)
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  uint16_t    tagCondLen;       // tag length in current query
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  int16_t     numOfGroupCols;   // num of group by columns
  int16_t     orderByIdx;
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  int16_t     orderType;        // used in group by xx order by xxx
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  int64_t     limit;
  int64_t     offset;
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  uint32_t    queryType;        // denote another query process
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  int16_t     numOfOutput;  // final output columns numbers
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  int16_t     tagNameRelType;   // relation of tag criteria and tbname criteria
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  int16_t     fillType;      // interpolate type
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  uint64_t    fillVal;       // default value array list
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  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
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  int32_t     numOfTags;      // number of tags columns involved
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  SColumnInfo colList[];
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} SQueryTableMsg;
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typedef struct {
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  int32_t  code;
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  uint64_t qhandle;
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} SQueryTableRsp;
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typedef struct {
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  SMsgHead header;
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  uint64_t qhandle;
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  uint16_t free;
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} SRetrieveTableMsg;
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typedef struct SRetrieveTableRsp {
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  int32_t numOfRows;
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  int8_t  completed;  // all results are returned to client
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  int16_t precision;
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  int64_t offset;  // updated offset value for multi-vnode projection query
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  int64_t useconds;
  char    data[];
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} SRetrieveTableRsp;
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typedef struct {
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  int32_t vgId;
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  int32_t cfgVersion;
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  int64_t totalStorage;
  int64_t compStorage;
  int64_t pointsWritten;
  uint8_t status;
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  uint8_t role;
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  uint8_t replica;
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  uint8_t reserved[5];
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} SVnodeLoad;

typedef struct {
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  char     db[TSDB_ACCT_LEN + TSDB_DB_NAME_LEN];
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  int32_t  cacheBlockSize; //MB
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  int32_t  totalBlocks;
  int32_t  maxTables;
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  int32_t  daysPerFile;
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  int32_t  daysToKeep;
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  int32_t  daysToKeep1;
  int32_t  daysToKeep2;
  int32_t  minRowsPerFileBlock;
  int32_t  maxRowsPerFileBlock;
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  int32_t  commitTime;
  uint8_t  precision;   // time resolution
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  int8_t   compression;
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  int8_t   walLevel;
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  int8_t   replications;
  int8_t   ignoreExist;
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} SCMCreateDbMsg, SCMAlterDbMsg;
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typedef struct {
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  char    db[TSDB_TABLE_ID_LEN];
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  uint8_t ignoreNotExists;
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} SCMDropDbMsg, SCMUseDbMsg;
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// 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;

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typedef struct {
  int32_t  vgId;
  int8_t   accessState;
} SDMVgroupAccess;

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typedef struct {
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  int32_t  dnodeId;
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  uint32_t moduleStatus;
  uint32_t numOfVnodes;
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  uint32_t reserved;
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} SDMDnodeCfg;

typedef struct {
  int32_t   nodeId;
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  char      nodeEp[TSDB_EP_LEN];
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} SDMMnodeInfo;

typedef struct {
  int8_t       inUse;
  int8_t       nodeNum;
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  SDMMnodeInfo nodeInfos[TSDB_MAX_REPLICA];
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} SDMMnodeInfos;
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typedef struct {
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  int32_t  numOfMnodes;               // tsNumOfMnodes
  int32_t  mnodeEqualVnodeNum;        // tsMnodeEqualVnodeNum
  int32_t  offlineThreshold;          // tsOfflineThreshold
  int32_t  statusInterval;            // tsStatusInterval
  char     arbitrator[TSDB_EP_LEN];   // tsArbitrator
  char     timezone[64];              // tsTimezone
  char     locale[TSDB_LOCALE_LEN];   // tsLocale
  char     charset[TSDB_LOCALE_LEN];  // tsCharset
} SClusterCfg;

typedef struct {
  uint32_t    version;
  int32_t     dnodeId;
  char        dnodeEp[TSDB_EP_LEN];
  uint32_t    moduleStatus;
  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];
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  SClusterCfg clusterCfg;
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  SVnodeLoad  load[];
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} SDMStatusMsg;
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typedef struct {
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  SDMMnodeInfos    mnodes;
  SDMDnodeCfg      dnodeCfg;
  SDMVgroupAccess  vgAccess[];
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} SDMStatusRsp;
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typedef struct {
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  uint32_t vgId;
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  int32_t  cfgVersion;
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  int32_t  maxTables;
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  int32_t  cacheBlockSize;
  int32_t  totalBlocks;
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  int32_t  daysPerFile;
  int32_t  daysToKeep;
  int32_t  daysToKeep1;
  int32_t  daysToKeep2;
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  int32_t  minRowsPerFileBlock;
  int32_t  maxRowsPerFileBlock;
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  int32_t  commitTime;
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  int8_t   precision;
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  int8_t   compression;
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  int8_t   walLevel;
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  int8_t   replications;
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  int8_t   wals;
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  int8_t   quorum;
  int8_t   reserved[16];
} SMDVnodeCfg;

typedef struct {
  int32_t  nodeId;
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  char     nodeEp[TSDB_EP_LEN];
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} SMDVnodeDesc;

typedef struct {
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  char db[TSDB_ACCT_LEN + TSDB_DB_NAME_LEN];
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  SMDVnodeCfg  cfg;
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  SMDVnodeDesc nodes[TSDB_MAX_REPLICA];
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} SMDCreateVnodeMsg;
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typedef struct {
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  char    tableId[TSDB_TABLE_ID_LEN];
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  int16_t createFlag;
  char    tags[];
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} SCMTableInfoMsg;
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typedef struct {
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  int32_t numOfTables;
  char    tableIds[];
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} SCMMultiTableInfoMsg;
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typedef struct SCMSTableVgroupMsg {
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  int32_t numOfTables;
} SCMSTableVgroupMsg, SCMSTableVgroupRspMsg;
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typedef struct {
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  int32_t   vgId;
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  int8_t    numOfIps;
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  SIpAddr   ipAddr[TSDB_MAX_REPLICA_NUM];
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} SCMVgroupInfo;
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typedef struct {
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  int32_t numOfVgroups;
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  SCMVgroupInfo vgroups[];
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} SVgroupsInfo;

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typedef struct STableMetaMsg {
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  int32_t       contLen;
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  char          tableId[TSDB_TABLE_ID_LEN];   // table id
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  uint8_t       numOfTags;
  uint8_t       precision;
  uint8_t       tableType;
  int16_t       numOfColumns;
  int16_t       sversion;
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  int16_t       tversion;
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  int32_t       sid;
  uint64_t      uid;
  SCMVgroupInfo vgroup;
  SSchema       schema[];
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} STableMetaMsg;
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typedef struct SMultiTableMeta {
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  int32_t       numOfTables;
  int32_t       contLen;
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  STableMetaMsg metas[];
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} SMultiTableMeta;
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typedef struct {
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  int32_t dataLen;
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  char name[TSDB_TABLE_ID_LEN];
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  char data[TSDB_MAX_TAGS_LEN + TD_KV_ROW_HEAD_SIZE + sizeof(SColIdx) * TSDB_MAX_TAGS];
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} STagData;

/*
 * sql: show tables like '%a_%'
 * payload is the query condition, e.g., '%a_%'
 * payloadLen is the length of payload
 */
typedef struct {
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  int8_t   type;
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  char     db[TSDB_ACCT_LEN + TSDB_DB_NAME_LEN];
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  uint16_t payloadLen;
  char     payload[];
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} SCMShowMsg;
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typedef struct SCMShowRsp {
  uint64_t      qhandle;
  STableMetaMsg tableMeta;
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} SCMShowRsp;
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typedef struct {
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  char     ep[TSDB_EP_LEN];  // end point, hostname:port
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} SCMCreateDnodeMsg, SCMDropDnodeMsg;
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typedef struct {
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  int32_t dnodeId;
  int32_t vgId;
  int32_t sid;
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} SDMConfigTableMsg;
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typedef struct {
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  uint32_t dnodeId;
  int32_t  vgId;
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} SDMConfigVnodeMsg;
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typedef struct {
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  char ep[TSDB_EP_LEN];  // end point, hostname:port
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  char config[64];
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} SMDCfgDnodeMsg, SCMCfgDnodeMsg;
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typedef struct {
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  char     sql[TSDB_SHOW_SQL_LEN];
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  uint32_t queryId;
  int64_t  useconds;
  int64_t  stime;
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} SQueryDesc;
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typedef struct {
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  char     sql[TSDB_SHOW_SQL_LEN];
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  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;
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} SStreamDesc;
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typedef struct {
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  uint32_t connId;
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  int32_t  numOfQueries;
  int32_t  numOfStreams;
  char     pData[];
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} SCMHeartBeatMsg;
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typedef struct {
  uint32_t  queryId;
  uint32_t  streamId;
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  uint32_t  totalDnodes;
  uint32_t  onlineDnodes;
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  uint32_t  connId;
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  int8_t    killConnection;
  SRpcIpSet ipList;
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} SCMHeartBeatRsp;
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typedef struct {
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  char queryId[TSDB_KILL_MSG_LEN + 1];
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} SCMKillQueryMsg, SCMKillStreamMsg, SCMKillConnMsg;
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typedef struct {
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  int32_t  vnode;
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  int32_t  sid;
  uint64_t uid;
  uint64_t stime;  // stream starting time
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  int32_t  status;
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  char     tableId[TSDB_TABLE_ID_LEN];
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} SMDAlterStreamMsg;
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typedef struct {
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  char user[TSDB_USER_LEN];
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  char spi;
  char encrypt;
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  char secret[TSDB_KEY_LEN];
  char ckey[TSDB_KEY_LEN];
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} SDMAuthMsg, SDMAuthRsp;

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#pragma pack(pop)
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#ifdef __cplusplus
}
#endif

#endif