[TD-2658]<fix> read table name error because the length of each row was not read

src/kit/taosdemox/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/libcurl/include)
+
+IF (TD_LINUX)         
+  AUX_SOURCE_DIRECTORY(. SRC)
+  ADD_EXECUTABLE(taosdemox ${SRC})
+  
+  #find_program(HAVE_CURL NAMES curl)   
+  IF ((NOT TD_ARM_64) AND (NOT TD_ARM_32))    
+    ADD_DEFINITIONS(-DTD_LOWA_CURL)
+    LINK_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/libcurl/lib)
+    ADD_LIBRARY(curl STATIC IMPORTED)
+    SET_PROPERTY(TARGET curl PROPERTY IMPORTED_LOCATION ${TD_COMMUNITY_DIR}/deps/libcurl/lib/libcurl.a)
+    TARGET_LINK_LIBRARIES(taosdemox curl) 
+  ENDIF ()
+  
+  IF (TD_SOMODE_STATIC)
+    TARGET_LINK_LIBRARIES(taosdemox taos_static cJson)
+  ELSE ()
+    TARGET_LINK_LIBRARIES(taosdemox taos cJson)
+  ENDIF ()
+ENDIF ()

src/kit/taosdemox/insert.json

@@ -5,7 +5,8 @@
 	"port": 6030,
 	"user": "root",
 	"password": "taosdata",
-	"thread_count": 2,
+	"thread_count": 4,
+	"thread_count_create_tbl": 1,
 	"result_file": "./insert_res.txt",
 	"databases": [{
 		"dbinfo": {

src/kit/taosdemox/taosdemox.c

@@ -93,9 +93,6 @@ extern char configDir[];
 #define   MAX_QUERY_SQL_COUNT    10
 #define   MAX_QUERY_SQL_LENGTH   256
 
-
-#define   MAX_LINE_COUNT_IN_MEM  10000
-
 typedef enum CREATE_SUB_TALBE_MOD_EN {
   PRE_CREATE_SUBTBL,
   AUTO_CREATE_SUBTBL,
@@ -259,6 +256,7 @@ typedef struct SDbs_S {
   bool         queryMode;
   
   int          threadCount;
+  int          threadCountByCreateTbl;
   int          dbCount;
   SDataBase    db[MAX_DB_COUNT];
 
@@ -1418,7 +1416,6 @@ static int getAllChildNameOfSuperTable(TAOS * taos, char* dbName, char* sTblName
   char command[BUFFER_SIZE] = "\0";
   TAOS_RES * res;  
   TAOS_ROW row = NULL;
-  int count = 0; 
 
   char* childTblName = *childTblNameOfSuperTbl;
   
@@ -1434,11 +1431,12 @@ static int getAllChildNameOfSuperTable(TAOS * taos, char* dbName, char* sTblName
   }
 
   int childTblCount = 10000;
-  count = 0;
+  int count = 0;
   childTblName = (char*)calloc(1, childTblCount * TSDB_TABLE_NAME_LEN);
   char* pTblName = childTblName;
   while ((row = taos_fetch_row(res)) != NULL) {
-    strncpy(pTblName, (char *)row[0], TSDB_TABLE_NAME_LEN);
+    int32_t* len = taos_fetch_lengths(res);
+    strncpy(pTblName, (char *)row[0], len[0]);
     //printf("==== sub table name: %s\n", pTblName);
     count++;
     if (count >= childTblCount - 1) {
@@ -1829,33 +1827,59 @@ static void createChildTables() {
       if ((AUTO_CREATE_SUBTBL == g_Dbs.db[i].superTbls[j].autoCreateTable) || (TBL_ALREADY_EXISTS == g_Dbs.db[i].superTbls[j].childTblExists)) {
         continue;
       }
-      startMultiThreadCreateChildTable(g_Dbs.db[i].superTbls[j].colsOfCreatChildTable, g_Dbs.threadCount, g_Dbs.db[i].superTbls[j].childTblCount, g_Dbs.db[i].dbName, &(g_Dbs.db[i].superTbls[j]));
+      startMultiThreadCreateChildTable(g_Dbs.db[i].superTbls[j].colsOfCreatChildTable, g_Dbs.threadCountByCreateTbl, g_Dbs.db[i].superTbls[j].childTblCount, g_Dbs.db[i].dbName, &(g_Dbs.db[i].superTbls[j]));
       g_totalChildTables += g_Dbs.db[i].superTbls[j].childTblCount;
     }    
   }
 }
 
+/*
+static int taosGetLineNum(const char *fileName)
+{
+  int lineNum = 0;
+  char cmd[1024] = { 0 };
+  char buf[1024] = { 0 };
+  sprintf(cmd, "wc -l %s", fileName);
+
+  FILE *fp = popen(cmd, "r");
+  if (fp == NULL) {
+    fprintf(stderr, "ERROR: failed to execute:%s, error:%s\n", cmd, strerror(errno));
+    return lineNum;
+  }
+
+  if (fgets(buf, sizeof(buf), fp)) {
+    int index = strchr((const char*)buf, ' ') - buf;
+    buf[index] = '\0';
+    lineNum = atoi(buf);
+  }
+  pclose(fp);
+  return lineNum;
+}
+*/
+
 /*
   Read 10000 lines at most. If more than 10000 lines, continue to read after using
 */
-int readTagFromCsvFileToMem(SSuperTable  * supterTblInfo) {
+int readTagFromCsvFileToMem(SSuperTable  * superTblInfo) {
   size_t  n = 0;
   ssize_t readLen = 0;
   char *  line = NULL;
   
-  FILE *fp = fopen(supterTblInfo->tagsFile, "r");
+  FILE *fp = fopen(superTblInfo->tagsFile, "r");
   if (fp == NULL) {
-    printf("Failed to open tags file: %s, reason:%s\n", supterTblInfo->tagsFile, strerror(errno));
+    printf("Failed to open tags file: %s, reason:%s\n", superTblInfo->tagsFile, strerror(errno));
     return -1;
   }
 
-  if (supterTblInfo->tagDataBuf) {
-    free(supterTblInfo->tagDataBuf);
-    supterTblInfo->tagDataBuf = NULL;
+  if (superTblInfo->tagDataBuf) {
+    free(superTblInfo->tagDataBuf);
+    superTblInfo->tagDataBuf = NULL;
   }
   
-  supterTblInfo->tagDataBuf = calloc(supterTblInfo->lenOfTagOfOneRow * MAX_LINE_COUNT_IN_MEM, 1);
-  if (supterTblInfo->tagDataBuf == NULL) {
+  int tagCount = 10000;
+  int count = 0;
+  char* tagDataBuf = calloc(1, superTblInfo->lenOfTagOfOneRow * tagCount);
+  if (tagDataBuf == NULL) {
     printf("Failed to calloc, reason:%s\n", strerror(errno));
     fclose(fp);
     return -1;
@@ -1870,20 +1894,35 @@ int readTagFromCsvFileToMem(SSuperTable  * supterTblInfo) {
       continue;
     }
 
-    memcpy(supterTblInfo->tagDataBuf + supterTblInfo->tagSampleCount * supterTblInfo->lenOfTagOfOneRow, line, readLen);
-    supterTblInfo->tagSampleCount++;
+    memcpy(tagDataBuf + count * superTblInfo->lenOfTagOfOneRow, line, readLen);
+    count++;
 
-    if (supterTblInfo->tagSampleCount >= MAX_LINE_COUNT_IN_MEM) {
-      break;
+    if (count >= tagCount - 1) {
+      char *tmp = realloc(tagDataBuf, (size_t)tagCount*1.5*superTblInfo->lenOfTagOfOneRow);
+      if (tmp != NULL) {
+        tagDataBuf = tmp;
+        tagCount = (int)(tagCount*1.5);
+        memset(tagDataBuf + count*superTblInfo->lenOfTagOfOneRow, 0, (size_t)((tagCount-count)*superTblInfo->lenOfTagOfOneRow));
+      } else {
+        // exit, if allocate more memory failed
+        printf("realloc fail for save tag val from %s\n", superTblInfo->tagsFile);
+        tmfree(tagDataBuf);
+        free(line);
+        fclose(fp);
+        return -1;
       }
     }
+  }
+
+  superTblInfo->tagDataBuf = tagDataBuf;
+  superTblInfo->tagSampleCount = count;
 
   free(line);
   fclose(fp);
   return 0;
 }
 
-int readSampleFromJsonFileToMem(SSuperTable  * supterTblInfo) {
+int readSampleFromJsonFileToMem(SSuperTable  * superTblInfo) {
   // TODO
   return 0;
 }
@@ -2139,6 +2178,16 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
     goto PARSE_OVER;
   }  
   
+  cJSON* threads2 = cJSON_GetObjectItem(root, "thread_count_create_tbl");
+  if (threads2 && threads2->type == cJSON_Number) {
+    g_Dbs.threadCountByCreateTbl = threads2->valueint;
+  } else if (!threads2) {
+    g_Dbs.threadCountByCreateTbl = 1;
+  } else {
+    printf("failed to read json, threads2 not found");
+    goto PARSE_OVER;
+  }  
+
   cJSON* dbs = cJSON_GetObjectItem(root, "databases");
   if (!dbs || dbs->type != cJSON_Array) {
     printf("failed to read json, databases not found\n");
@@ -3008,6 +3057,10 @@ void postFreeResource() {
         free(g_Dbs.db[i].superTbls[j].sampleDataBuf);
         g_Dbs.db[i].superTbls[j].sampleDataBuf = NULL;
       }
+      if (0 != g_Dbs.db[i].superTbls[j].tagDataBuf) {
+        free(g_Dbs.db[i].superTbls[j].tagDataBuf);
+        g_Dbs.db[i].superTbls[j].tagDataBuf = NULL;
+      }
       if (0 != g_Dbs.db[i].superTbls[j].childTblName) {
         free(g_Dbs.db[i].superTbls[j].childTblName);
         g_Dbs.db[i].superTbls[j].childTblName = NULL;