[TD-509] add db name to vnodeObj

src/inc/taosmsg.h

@@ -590,6 +590,7 @@ typedef struct {
 } SMDVnodeDesc;
 
 typedef struct {
+  char db[TSDB_DB_NAME_LEN + 1];
   SMDVnodeCfg  cfg;
   SMDVnodeDesc nodes[TSDB_MAX_REPLICA];
 } SMDCreateVnodeMsg;

src/mnode/src/mnodeVgroup.c

@@ -539,6 +539,8 @@ SMDCreateVnodeMsg *mnodeBuildCreateVnodeMsg(SVgObj *pVgroup) {
   SMDCreateVnodeMsg *pVnode = rpcMallocCont(sizeof(SMDCreateVnodeMsg));
   if (pVnode == NULL) return NULL;
 
+  strcpy(pVnode->db, pVgroup->dbName);
+
   SMDVnodeCfg *pCfg = &pVnode->cfg;
   pCfg->vgId                = htonl(pVgroup->vgId);
   pCfg->cfgVersion          = htonl(pDb->cfgVersion);
@@ -594,7 +596,7 @@ SRpcIpSet mnodeGetIpSetFromIp(char *ep) {
 }
 
 void mnodeSendCreateVnodeMsg(SVgObj *pVgroup, SRpcIpSet *ipSet, void *ahandle) {
-  mTrace("vgId:%d, send create vnode:%d msg, ahandle:%p", pVgroup->vgId, pVgroup->vgId, ahandle);
+  mTrace("vgId:%d, send create vnode:%d msg, ahandle:%p db:%s", pVgroup->vgId, pVgroup->vgId, ahandle, pVgroup->dbName);
   SMDCreateVnodeMsg *pCreate = mnodeBuildCreateVnodeMsg(pVgroup);
   SRpcMsg rpcMsg = {
     .handle  = ahandle,

src/vnode/inc/vnodeInt.h

@@ -51,6 +51,7 @@ typedef struct {
   SSyncCfg     syncCfg;
   SWalCfg      walCfg;
   char        *rootDir;
+  char         db[TSDB_DB_NAME_LEN + 1];
 } SVnodeObj;
 
 int  vnodeWriteToQueue(void *param, void *pHead, int type);

src/vnode/src/vnodeMain.c

@@ -496,7 +496,7 @@ static int32_t vnodeSaveCfg(SMDCreateVnodeMsg *pVnodeCfg) {
   }
 
   len += snprintf(content + len, maxLen - len, "{\n");
-
+  len += snprintf(content + len, maxLen - len, "  \"db\": \"%s\",\n", pVnodeCfg->db);
   len += snprintf(content + len, maxLen - len, "  \"cfgVersion\": %d,\n", pVnodeCfg->cfg.cfgVersion);
   len += snprintf(content + len, maxLen - len, "  \"cacheBlockSize\": %d,\n", pVnodeCfg->cfg.cacheBlockSize);
   len += snprintf(content + len, maxLen - len, "  \"totalBlocks\": %d,\n", pVnodeCfg->cfg.totalBlocks);
@@ -568,6 +568,13 @@ static int32_t vnodeReadCfg(SVnodeObj *pVnode) {
     goto PARSE_OVER;
   }
 
+  cJSON *db = cJSON_GetObjectItem(root, "db");
+  if (!db || db->type != cJSON_String || db->valuestring == NULL) {
+    vError("vgId:%d, failed to read vnode cfg, db not found", pVnode->vgId);
+    goto PARSE_OVER;
+  }
+  strcpy(pVnode->db, db->valuestring);
+  
   cJSON *cfgVersion = cJSON_GetObjectItem(root, "cfgVersion");
   if (!cfgVersion || cfgVersion->type != cJSON_Number) {
     vError("vgId:%d, failed to read vnode cfg, cfgVersion not found", pVnode->vgId);