[td-3036]<feature>: support the db sync operator.

src/client/src/tscSQLParser.c

@@ -670,7 +670,18 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       if ((code = setKillInfo(pSql, pInfo, pInfo->type)) != TSDB_CODE_SUCCESS) {
         return code;
       }
+      break;
+    }
+
+    case TSDB_SQL_SYNC_DB_REPLICA: {
+      const char* msg1 = "invalid db name";
+      SStrToken* pzName = taosArrayGet(pInfo->pMiscInfo->a, 0);
 
+      assert(taosArrayGetSize(pInfo->pMiscInfo->a) == 1);
+      code = tNameSetDbName(&pTableMetaInfo->name, getAccountId(pSql), pzName);
+      if (code != TSDB_CODE_SUCCESS) {
+        return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
+      }
       break;
     }
 

src/client/src/tscServer.c

@@ -1284,6 +1284,23 @@ int32_t tscBuildUseDbMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t tscBuildSyncDbReplicaMsg(SSqlObj* pSql, SSqlInfo *pInfo) {
+  SSqlCmd *pCmd = &pSql->cmd;
+  pCmd->payloadLen = sizeof(SSyncDbMsg);
+
+  if (TSDB_CODE_SUCCESS != tscAllocPayload(pCmd, pCmd->payloadLen)) {
+    tscError("%p failed to malloc for query msg", pSql);
+    return TSDB_CODE_TSC_OUT_OF_MEMORY;
+  }
+
+  SSyncDbMsg *pSyncMsg = (SSyncDbMsg *)pCmd->payload;
+  STableMetaInfo *pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, pCmd->clauseIndex, 0);
+  tNameExtractFullName(&pTableMetaInfo->name, pSyncMsg->db);
+  pCmd->msgType = TSDB_MSG_TYPE_CM_SYNC_DB;
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t tscBuildShowMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   STscObj *pObj = pSql->pTscObj;
   SSqlCmd *pCmd = &pSql->cmd;
@@ -2559,6 +2576,7 @@ void tscInitMsgsFp() {
   tscBuildMsg[TSDB_SQL_DROP_USER] = tscBuildDropUserAcctMsg;
   tscBuildMsg[TSDB_SQL_DROP_ACCT] = tscBuildDropUserAcctMsg;
   tscBuildMsg[TSDB_SQL_DROP_DB] = tscBuildDropDbMsg;
+  tscBuildMsg[TSDB_SQL_SYNC_DB_REPLICA] = tscBuildSyncDbReplicaMsg;
   tscBuildMsg[TSDB_SQL_DROP_TABLE] = tscBuildDropTableMsg;
   tscBuildMsg[TSDB_SQL_ALTER_USER] = tscBuildUserMsg;
   tscBuildMsg[TSDB_SQL_CREATE_DNODE] = tscBuildCreateDnodeMsg;

src/common/inc/tcmdtype.h

@@ -51,6 +51,7 @@ enum {
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_ALTER_ACCT, "alter-acct" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_ALTER_TABLE, "alter-table" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_ALTER_DB, "alter-db" )
+  TSDB_DEFINE_SQL_TYPE(TSDB_SQL_SYNC_DB_REPLICA, "sync db-replica")
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CREATE_MNODE, "create-mnode" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_DROP_MNODE, "drop-mnode" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CREATE_DNODE, "create-dnode" )
@@ -87,13 +88,13 @@ enum {
    */
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_RETRIEVE_EMPTY_RESULT, "retrieve-empty-result" )
 
-  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_RESET_CACHE, "reset-cache" )
-  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SERV_STATUS, "serv-status" )
-  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CURRENT_DB, "current-db" )
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_RESET_CACHE,  "reset-cache" )
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SERV_STATUS,  "serv-status" )
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CURRENT_DB,   "current-db" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SERV_VERSION, "serv-version" )
-  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CLI_VERSION, "cli-version" )
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CLI_VERSION,  "cli-version" )
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CURRENT_USER, "current-user ")
-  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CFG_LOCAL, "cfg-local" )
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_CFG_LOCAL,    "cfg-local" )
 
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_MAX, "max" )
 };

src/dnode/src/dnodeShell.c

@@ -49,6 +49,7 @@ int32_t dnodeInitShell() {
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_CREATE_DB]   = dnodeDispatchToMWriteQueue;
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_CREATE_TP]   = dnodeDispatchToMWriteQueue;
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_DROP_DB]     = dnodeDispatchToMWriteQueue;
+  dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_SYNC_DB]     = dnodeDispatchToMWriteQueue;
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_DROP_TP]     = dnodeDispatchToMWriteQueue;
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_ALTER_DB]    = dnodeDispatchToMWriteQueue;
   dnodeProcessShellMsgFp[TSDB_MSG_TYPE_CM_ALTER_TP]    = dnodeDispatchToMWriteQueue;

src/inc/taosmsg.h

@@ -77,6 +77,7 @@ 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_SYNC_DB, "sync-db-replica" )
 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" )
@@ -574,7 +575,7 @@ typedef struct {
 typedef struct {
   char    db[TSDB_TABLE_FNAME_LEN];
   uint8_t ignoreNotExists;
-} SDropDbMsg, SUseDbMsg;
+} SDropDbMsg, SUseDbMsg, SSyncDbMsg;
 
 // IMPORTANT: sizeof(SVnodeStatisticInfo) should not exceed
 // TSDB_FILE_HEADER_LEN/4 - TSDB_FILE_HEADER_VERSION_SIZE

src/inc/ttokendef.h

@@ -152,56 +152,57 @@
 #define TK_NOW                            133
 #define TK_RESET                          134
 #define TK_QUERY                          135
-#define TK_ADD                            136
-#define TK_COLUMN                         137
-#define TK_TAG                            138
-#define TK_CHANGE                         139
-#define TK_SET                            140
-#define TK_KILL                           141
-#define TK_CONNECTION                     142
-#define TK_STREAM                         143
-#define TK_COLON                          144
-#define TK_ABORT                          145
-#define TK_AFTER                          146
-#define TK_ATTACH                         147
-#define TK_BEFORE                         148
-#define TK_BEGIN                          149
-#define TK_CASCADE                        150
-#define TK_CLUSTER                        151
-#define TK_CONFLICT                       152
-#define TK_COPY                           153
-#define TK_DEFERRED                       154
-#define TK_DELIMITERS                     155
-#define TK_DETACH                         156
-#define TK_EACH                           157
-#define TK_END                            158
-#define TK_EXPLAIN                        159
-#define TK_FAIL                           160
-#define TK_FOR                            161
-#define TK_IGNORE                         162
-#define TK_IMMEDIATE                      163
-#define TK_INITIALLY                      164
-#define TK_INSTEAD                        165
-#define TK_MATCH                          166
-#define TK_KEY                            167
-#define TK_OF                             168
-#define TK_RAISE                          169
-#define TK_REPLACE                        170
-#define TK_RESTRICT                       171
-#define TK_ROW                            172
-#define TK_STATEMENT                      173
-#define TK_TRIGGER                        174
-#define TK_VIEW                           175
-#define TK_SEMI                           176
-#define TK_NONE                           177
-#define TK_PREV                           178
-#define TK_LINEAR                         179
-#define TK_IMPORT                         180
-#define TK_TBNAME                         181
-#define TK_JOIN                           182
-#define TK_INSERT                         183
-#define TK_INTO                           184
-#define TK_VALUES                         185
+#define TK_SYNCDB                         136
+#define TK_ADD                            137
+#define TK_COLUMN                         138
+#define TK_TAG                            139
+#define TK_CHANGE                         140
+#define TK_SET                            141
+#define TK_KILL                           142
+#define TK_CONNECTION                     143
+#define TK_STREAM                         144
+#define TK_COLON                          145
+#define TK_ABORT                          146
+#define TK_AFTER                          147
+#define TK_ATTACH                         148
+#define TK_BEFORE                         149
+#define TK_BEGIN                          150
+#define TK_CASCADE                        151
+#define TK_CLUSTER                        152
+#define TK_CONFLICT                       153
+#define TK_COPY                           154
+#define TK_DEFERRED                       155
+#define TK_DELIMITERS                     156
+#define TK_DETACH                         157
+#define TK_EACH                           158
+#define TK_END                            159
+#define TK_EXPLAIN                        160
+#define TK_FAIL                           161
+#define TK_FOR                            162
+#define TK_IGNORE                         163
+#define TK_IMMEDIATE                      164
+#define TK_INITIALLY                      165
+#define TK_INSTEAD                        166
+#define TK_MATCH                          167
+#define TK_KEY                            168
+#define TK_OF                             169
+#define TK_RAISE                          170
+#define TK_REPLACE                        171
+#define TK_RESTRICT                       172
+#define TK_ROW                            173
+#define TK_STATEMENT                      174
+#define TK_TRIGGER                        175
+#define TK_VIEW                           176
+#define TK_SEMI                           177
+#define TK_NONE                           178
+#define TK_PREV                           179
+#define TK_LINEAR                         180
+#define TK_IMPORT                         181
+#define TK_TBNAME                         182
+#define TK_JOIN                           183
+#define TK_INSERT                         184
+#define TK_INTO                           185
+#define TK_VALUES                         186
 
 
 #define TK_SPACE                          300

src/mnode/src/mnodeDb.c

@@ -50,6 +50,7 @@ static int32_t mnodeGetDbMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn
 static int32_t mnodeRetrieveDbs(SShowObj *pShow, char *data, int32_t rows, void *pConn);
 static int32_t mnodeProcessCreateDbMsg(SMnodeMsg *pMsg);
 static int32_t mnodeProcessDropDbMsg(SMnodeMsg *pMsg);
+static int32_t mnodeProcessSyncDbMsg(SMnodeMsg *pMsg);
 int32_t mnodeProcessAlterDbMsg(SMnodeMsg *pMsg);
 
 #ifndef _TOPIC
@@ -178,6 +179,7 @@ int32_t mnodeInitDbs() {
   mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_CREATE_DB, mnodeProcessCreateDbMsg);
   mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_ALTER_DB, mnodeProcessAlterDbMsg);
   mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_DROP_DB, mnodeProcessDropDbMsg);
+  mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_SYNC_DB, mnodeProcessSyncDbMsg);
   mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_DB, mnodeGetDbMeta);
   mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_DB, mnodeRetrieveDbs);
   mnodeAddShowFreeIterHandle(TSDB_MGMT_TABLE_DB, mnodeCancelGetNextDb);
@@ -1184,6 +1186,10 @@ static int32_t mnodeProcessDropDbMsg(SMnodeMsg *pMsg) {
   return mnodeDropDb(pMsg);
 }
 
+static int32_t mnodeProcessSyncDbMsg(SMnodeMsg *pMsg) {
+  return 0;
+}
+
 void  mnodeDropAllDbs(SAcctObj *pAcct)  {
   int32_t numOfDbs = 0;
   SDbObj *pDb = NULL;

src/query/inc/sql.y

@@ -726,6 +726,9 @@ expritem(A) ::= .                              {A = 0;}
 ///////////////////////////////////reset query cache//////////////////////////////////////
 cmd ::= RESET QUERY CACHE.  { setDCLSqlElems(pInfo, TSDB_SQL_RESET_CACHE, 0);}
 
+///////////////////////////////////sync replica database//////////////////////////////////
+cmd ::= SYNCDB ids(X) REPLICA.{ setDCLSqlElems(pInfo, TSDB_SQL_SYNC_DB_REPLICA, 1, &X);}
+
 ///////////////////////////////////ALTER TABLE statement//////////////////////////////////
 cmd ::= ALTER TABLE ids(X) cpxName(F) ADD COLUMN columnlist(A).     {
     X.n += F.n;

src/query/src/qSqlParser.c

@@ -911,6 +911,7 @@ void setDCLSqlElems(SSqlInfo *pInfo, int32_t type, int32_t nParam, ...) {
     SStrToken *pToken = va_arg(va, SStrToken *);
     taosArrayPush(pInfo->pMiscInfo->a, pToken);
   }
+
   va_end(va);
 }
 

src/query/src/qTokenizer.c

@@ -100,6 +100,7 @@ static SKeyword keywordTable[] = {
     {"ACCOUNT",      TK_ACCOUNT},
     {"USE",          TK_USE},
     {"DESCRIBE",     TK_DESCRIBE},
+    {"SYNCDB",       TK_SYNCDB},
     {"ALTER",        TK_ALTER},
     {"PASS",         TK_PASS},
     {"PRIVILEGE",    TK_PRIVILEGE},