Merge pull request #7825 from taosdata/feature/TD-6443

[TD-6443]<feature>: Support OpenTSDB HTTP JSON data import format

src/client/CMakeLists.txt

@@ -13,13 +13,13 @@ IF (TD_LINUX)
 
   # set the static lib name
   ADD_LIBRARY(taos_static STATIC ${SRC})
-  TARGET_LINK_LIBRARIES(taos_static common query trpc tutil pthread m rt ${VAR_TSZ})
+  TARGET_LINK_LIBRARIES(taos_static common query trpc tutil pthread m rt cJson ${VAR_TSZ})
   SET_TARGET_PROPERTIES(taos_static PROPERTIES OUTPUT_NAME "taos_static")
   SET_TARGET_PROPERTIES(taos_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
   # generate dynamic library (*.so)
   ADD_LIBRARY(taos SHARED ${SRC})
-  TARGET_LINK_LIBRARIES(taos common query trpc tutil pthread m rt)
+  TARGET_LINK_LIBRARIES(taos common query trpc tutil pthread m rt cJson)
   IF (TD_LINUX_64)
     TARGET_LINK_LIBRARIES(taos lua)
   ENDIF ()
@@ -39,13 +39,13 @@ ELSEIF (TD_DARWIN)
 
   # set the static lib name
   ADD_LIBRARY(taos_static STATIC ${SRC})
-  TARGET_LINK_LIBRARIES(taos_static common query trpc tutil pthread m lua)
+  TARGET_LINK_LIBRARIES(taos_static common query trpc tutil pthread m lua cJson)
   SET_TARGET_PROPERTIES(taos_static PROPERTIES OUTPUT_NAME "taos_static")
   SET_TARGET_PROPERTIES(taos_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
   # generate dynamic library (*.dylib)
   ADD_LIBRARY(taos SHARED ${SRC})
-  TARGET_LINK_LIBRARIES(taos common query trpc tutil pthread m lua)
+  TARGET_LINK_LIBRARIES(taos common query trpc tutil pthread m lua cJson)
   SET_TARGET_PROPERTIES(taos PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
   #set version of .dylib
@@ -63,26 +63,26 @@ ELSEIF (TD_WINDOWS)
   CONFIGURE_FILE("${TD_COMMUNITY_DIR}/src/client/src/taos.rc.in" "${TD_COMMUNITY_DIR}/src/client/src/taos.rc")
 
   ADD_LIBRARY(taos_static STATIC ${SRC})
-  TARGET_LINK_LIBRARIES(taos_static trpc tutil query)
+  TARGET_LINK_LIBRARIES(taos_static trpc tutil query cJson)
 
   # generate dynamic library (*.dll)
   ADD_LIBRARY(taos SHARED ${SRC} ${TD_COMMUNITY_DIR}/src/client/src/taos.rc)
   IF (NOT TD_GODLL)
     SET_TARGET_PROPERTIES(taos PROPERTIES LINK_FLAGS /DEF:${TD_COMMUNITY_DIR}/src/client/src/taos.def)
   ENDIF ()
-  TARGET_LINK_LIBRARIES(taos trpc tutil query lua)
+  TARGET_LINK_LIBRARIES(taos trpc tutil query lua cJson)
 
 ELSEIF (TD_DARWIN)
   SET(CMAKE_MACOSX_RPATH 1)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/jni/linux)
 
   ADD_LIBRARY(taos_static STATIC ${SRC})
-  TARGET_LINK_LIBRARIES(taos_static query trpc tutil pthread m lua)
+  TARGET_LINK_LIBRARIES(taos_static query trpc tutil pthread m lua cJson)
   SET_TARGET_PROPERTIES(taos_static PROPERTIES OUTPUT_NAME "taos_static")
 
   # generate dynamic library (*.dylib)
   ADD_LIBRARY(taos SHARED ${SRC})
-  TARGET_LINK_LIBRARIES(taos query trpc tutil pthread m lua)
+  TARGET_LINK_LIBRARIES(taos query trpc tutil pthread m lua cJson)
 
   SET_TARGET_PROPERTIES(taos PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 

src/client/src/tscParseLineProtocol.c

@@ -2128,11 +2128,12 @@ int32_t tscParseLines(char* lines[], int numLines, SArray* points, SArray* faile
 int taos_insert_lines(TAOS* taos, char* lines[], int numLines) {
   int32_t code = 0;
 
-  SSmlLinesInfo* info = calloc(1, sizeof(SSmlLinesInfo));
+  SSmlLinesInfo* info = tcalloc(1, sizeof(SSmlLinesInfo));
   info->id = genLinesSmlId();
 
   if (numLines <= 0 || numLines > 65536) {
     tscError("SML:0x%"PRIx64" taos_insert_lines numLines should be between 1 and 65536. numLines: %d", info->id, numLines);
+    tfree(info);
     code = TSDB_CODE_TSC_APP_ERROR;
     return code;
   }
@@ -2140,7 +2141,7 @@ int taos_insert_lines(TAOS* taos, char* lines[], int numLines) {
   for (int i = 0; i < numLines; ++i) {
     if (lines[i] == NULL) {
       tscError("SML:0x%"PRIx64" taos_insert_lines line %d is NULL", info->id, i);
-      free(info);
+      tfree(info);
       code = TSDB_CODE_TSC_APP_ERROR;
       return code;
     }
@@ -2149,7 +2150,7 @@ int taos_insert_lines(TAOS* taos, char* lines[], int numLines) {
   SArray* lpPoints = taosArrayInit(numLines, sizeof(TAOS_SML_DATA_POINT));
   if (lpPoints == NULL) {
     tscError("SML:0x%"PRIx64" taos_insert_lines failed to allocate memory", info->id);
-    free(info);
+    tfree(info);
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }
 
@@ -2177,7 +2178,7 @@ cleanup:
 
   taosArrayDestroy(lpPoints);
 
-  free(info);
+  tfree(info);
   return code;
 }
 

src/client/src/tscParseOpenTSDB.c

@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "cJSON.h"
 #include "hash.h"
 #include "taos.h"
 
@@ -12,9 +13,12 @@
 
 #include "tscParseLine.h"
 
-#define MAX_TELNET_FILEDS_NUM 2
-#define OTS_TIMESTAMP_COLUMN_NAME "ts"
-#define OTS_METRIC_VALUE_COLUMN_NAME "value"
+#define OTD_MAX_FIELDS_NUM 2
+#define OTD_JSON_SUB_FIELDS_NUM 2
+#define OTD_JSON_FIELDS_NUM 4
+
+#define OTD_TIMESTAMP_COLUMN_NAME "ts"
+#define OTD_METRIC_VALUE_COLUMN_NAME "value"
 
 /* telnet style API parser */
 static uint64_t HandleId = 0;
@@ -77,12 +81,12 @@ static int32_t parseTelnetTimeStamp(TAOS_SML_KV **pTS, int *num_kvs, const char
   const char *start, *cur;
   int32_t ret = TSDB_CODE_SUCCESS;
   int len = 0;
-  char key[] = OTS_TIMESTAMP_COLUMN_NAME;
+  char key[] = OTD_TIMESTAMP_COLUMN_NAME;
   char *value = NULL;
 
   start = cur = *index;
   //allocate fields for timestamp and value
-  *pTS = tcalloc(MAX_TELNET_FILEDS_NUM, sizeof(TAOS_SML_KV));
+  *pTS = tcalloc(OTD_MAX_FIELDS_NUM, sizeof(TAOS_SML_KV));
 
   while(*cur != '\0') {
     if (*cur == ' ') {
@@ -123,7 +127,7 @@ static int32_t parseTelnetMetricValue(TAOS_SML_KV **pKVs, int *num_kvs, const ch
   const char *start, *cur;
   int32_t ret = TSDB_CODE_SUCCESS;
   int len = 0;
-  char key[] = OTS_METRIC_VALUE_COLUMN_NAME;
+  char key[] = OTD_METRIC_VALUE_COLUMN_NAME;
   char *value = NULL;
 
   start = cur = *index;
@@ -405,7 +409,7 @@ cleanup:
   tscDebug("OTD:0x%"PRIx64" taos_insert_telnet_lines finish inserting %d lines. code: %d", info->id, numLines, code);
   points = TARRAY_GET_START(lpPoints);
   numPoints = taosArrayGetSize(lpPoints);
-  for (int i=0; i<numPoints; ++i) {
+  for (int i = 0; i < numPoints; ++i) {
     destroySmlDataPoint(points+i);
   }
 
@@ -422,3 +426,548 @@ int taos_telnet_insert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint) {
   tfree(info);
   return code;
 }
+
+
+/* telnet style API parser */
+int32_t parseMetricFromJSON(cJSON *root, TAOS_SML_DATA_POINT* pSml, SSmlLinesInfo* info) {
+  cJSON *metric = cJSON_GetObjectItem(root, "metric");
+  if (!cJSON_IsString(metric)) {
+    return  TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  size_t stableLen = strlen(metric->valuestring);
+  if (stableLen > TSDB_TABLE_NAME_LEN) {
+      tscError("OTD:0x%"PRIx64" Metric cannot exceeds 193 characters in JSON", info->id);
+      return TSDB_CODE_TSC_INVALID_TABLE_ID_LENGTH;
+  }
+
+  pSml->stableName = tcalloc(stableLen + 1, sizeof(char));
+  if (pSml->stableName == NULL){
+    return TSDB_CODE_TSC_OUT_OF_MEMORY;
+  }
+
+  if (isdigit(metric->valuestring[0])) {
+    tscError("OTD:0x%"PRIx64" Metric cannnot start with digit in JSON", info->id);
+    tfree(pSml->stableName);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  tstrncpy(pSml->stableName, metric->valuestring, stableLen + 1);
+
+  return TSDB_CODE_SUCCESS;
+
+}
+
+int32_t parseTimestampFromJSONObj(cJSON *root, int64_t *tsVal, SSmlLinesInfo* info) {
+  int32_t size = cJSON_GetArraySize(root);
+  if (size != OTD_JSON_SUB_FIELDS_NUM) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *value = cJSON_GetObjectItem(root, "value");
+  if (!cJSON_IsNumber(value)) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *type = cJSON_GetObjectItem(root, "type");
+  if (!cJSON_IsString(type)) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  *tsVal = value->valueint;
+  //if timestamp value is 0 use current system time
+  if (*tsVal == 0) {
+    *tsVal = taosGetTimestampNs();
+    return TSDB_CODE_SUCCESS;
+  }
+
+  size_t typeLen = strlen(type->valuestring);
+  if (typeLen == 1 && type->valuestring[0] == 's') {
+    //seconds
+    *tsVal = (int64_t)(*tsVal * 1e9);
+  } else if (typeLen == 2 && type->valuestring[1] == 's') {
+    switch (type->valuestring[0]) {
+      case 'm':
+        //milliseconds
+        *tsVal = convertTimePrecision(*tsVal, TSDB_TIME_PRECISION_MILLI, TSDB_TIME_PRECISION_NANO);
+        break;
+      case 'u':
+        //microseconds
+        *tsVal = convertTimePrecision(*tsVal, TSDB_TIME_PRECISION_MICRO, TSDB_TIME_PRECISION_NANO);
+        break;
+      case 'n':
+        //nanoseconds
+        *tsVal = *tsVal * 1;
+        break;
+      default:
+        return TSDB_CODE_TSC_INVALID_JSON;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t parseTimestampFromJSON(cJSON *root, TAOS_SML_KV **pTS, int *num_kvs, SSmlLinesInfo* info) {
+  //Timestamp must be the first KV to parse
+  assert(*num_kvs == 0);
+  int64_t tsVal;
+  char key[] = OTD_TIMESTAMP_COLUMN_NAME;
+
+  cJSON *timestamp = cJSON_GetObjectItem(root, "timestamp");
+  if (cJSON_IsNumber(timestamp)) {
+    //timestamp value 0 indicates current system time
+    if (timestamp->valueint == 0) {
+      tsVal = taosGetTimestampNs();
+    } else {
+      tsVal = convertTimePrecision(timestamp->valueint, TSDB_TIME_PRECISION_MICRO, TSDB_TIME_PRECISION_NANO);
+    }
+  } else if (cJSON_IsObject(timestamp)) {
+    int32_t ret = parseTimestampFromJSONObj(timestamp, &tsVal, info);
+    if (ret != TSDB_CODE_SUCCESS) {
+      tscError("OTD:0x%"PRIx64" Failed to parse timestamp from JSON Obj", info->id);
+      return ret;
+    }
+  } else {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  //allocate fields for timestamp and value
+  *pTS = tcalloc(OTD_MAX_FIELDS_NUM, sizeof(TAOS_SML_KV));
+
+
+  (*pTS)->key = tcalloc(sizeof(key), 1);
+  memcpy((*pTS)->key, key, sizeof(key));
+
+  (*pTS)->type = TSDB_DATA_TYPE_TIMESTAMP;
+  (*pTS)->length = (int16_t)tDataTypes[(*pTS)->type].bytes;
+  (*pTS)->value = tcalloc((*pTS)->length, 1);
+  memcpy((*pTS)->value, &tsVal, (*pTS)->length);
+
+  *num_kvs += 1;
+  return TSDB_CODE_SUCCESS;
+
+}
+
+int32_t convertJSONBool(TAOS_SML_KV *pVal, char* typeStr, int64_t valueInt, SSmlLinesInfo* info) {
+  if (strcasecmp(typeStr, "bool") != 0) {
+    tscError("OTD:0x%"PRIx64" invalid type(%s) for JSON Bool", info->id, typeStr);
+    return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+  pVal->type = TSDB_DATA_TYPE_BOOL;
+  pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+  pVal->value = tcalloc(pVal->length, 1);
+  *(bool *)(pVal->value) = valueInt ? true : false;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t convertJSONNumber(TAOS_SML_KV *pVal, char* typeStr, cJSON *value, SSmlLinesInfo* info) {
+  //tinyint
+  if (strcasecmp(typeStr, "i8") == 0 ||
+      strcasecmp(typeStr, "tinyint") == 0) {
+    if (!IS_VALID_TINYINT(value->valueint)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%"PRId64") cannot fit in type(tinyint)", info->id, value->valueint);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_TINYINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(int8_t *)(pVal->value) = (int8_t)(value->valueint);
+    return TSDB_CODE_SUCCESS;
+  }
+  //smallint
+  if (strcasecmp(typeStr, "i16") == 0 ||
+      strcasecmp(typeStr, "smallint") == 0) {
+    if (!IS_VALID_SMALLINT(value->valueint)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%"PRId64") cannot fit in type(smallint)", info->id, value->valueint);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_SMALLINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(int16_t *)(pVal->value) = (int16_t)(value->valueint);
+    return TSDB_CODE_SUCCESS;
+  }
+  //int
+  if (strcasecmp(typeStr, "i32") == 0 ||
+      strcasecmp(typeStr, "int") == 0) {
+    if (!IS_VALID_INT(value->valueint)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%"PRId64") cannot fit in type(int)", info->id, value->valueint);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_INT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(int32_t *)(pVal->value) = (int32_t)(value->valueint);
+    return TSDB_CODE_SUCCESS;
+  }
+  //bigint
+  if (strcasecmp(typeStr, "i64") == 0 ||
+      strcasecmp(typeStr, "bigint") == 0) {
+    if (!IS_VALID_BIGINT(value->valueint)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%"PRId64") cannot fit in type(bigint)", info->id, value->valueint);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_BIGINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(int64_t *)(pVal->value) = (int64_t)(value->valueint);
+    return TSDB_CODE_SUCCESS;
+  }
+  //float
+  if (strcasecmp(typeStr, "f32") == 0 ||
+      strcasecmp(typeStr, "float") == 0) {
+    if (!IS_VALID_FLOAT(value->valuedouble)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%f) cannot fit in type(float)", info->id, value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_FLOAT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(float *)(pVal->value) = (float)(value->valuedouble);
+    return TSDB_CODE_SUCCESS;
+  }
+  //double
+  if (strcasecmp(typeStr, "f64") == 0 ||
+      strcasecmp(typeStr, "double") == 0) {
+    if (!IS_VALID_DOUBLE(value->valuedouble)) {
+      tscError("OTD:0x%"PRIx64" JSON value(%f) cannot fit in type(double)", info->id, value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_DOUBLE;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->value = tcalloc(pVal->length, 1);
+    *(double *)(pVal->value) = (double)(value->valuedouble);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  //if reach here means type is unsupported
+  tscError("OTD:0x%"PRIx64" invalid type(%s) for JSON Number", info->id, typeStr);
+  return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+}
+
+int32_t convertJSONString(TAOS_SML_KV *pVal, char* typeStr, cJSON *value, SSmlLinesInfo* info) {
+  if (strcasecmp(typeStr, "binary") == 0) {
+    pVal->type = TSDB_DATA_TYPE_BINARY;
+  } else if (strcasecmp(typeStr, "nchar") == 0) {
+    pVal->type = TSDB_DATA_TYPE_NCHAR;
+  } else {
+    tscError("OTD:0x%"PRIx64" invalid type(%s) for JSON String", info->id, typeStr);
+    return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+  pVal->length = (int16_t)strlen(value->valuestring);
+  pVal->value = tcalloc(pVal->length + 1, 1);
+  memcpy(pVal->value, value->valuestring, pVal->length);
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t parseValueFromJSONObj(cJSON *root, TAOS_SML_KV *pVal, SSmlLinesInfo* info) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+  int32_t size = cJSON_GetArraySize(root);
+
+  if (size != OTD_JSON_SUB_FIELDS_NUM) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *value = cJSON_GetObjectItem(root, "value");
+  if (value == NULL) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *type = cJSON_GetObjectItem(root, "type");
+  if (!cJSON_IsString(type)) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  switch (value->type) {
+    case cJSON_True:
+    case cJSON_False: {
+      ret = convertJSONBool(pVal, type->valuestring, value->valueint, info);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    case cJSON_Number: {
+      ret = convertJSONNumber(pVal, type->valuestring, value, info);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    case cJSON_String: {
+      ret = convertJSONString(pVal, type->valuestring, value, info);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    default:
+      return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t parseValueFromJSON(cJSON *root, TAOS_SML_KV *pVal, SSmlLinesInfo* info) {
+  int type = root->type;
+
+  switch (type) {
+    case cJSON_True:
+    case cJSON_False: {
+      pVal->type = TSDB_DATA_TYPE_BOOL;
+      pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+      pVal->value = tcalloc(pVal->length, 1);
+      *(bool *)(pVal->value) = root->valueint ? true : false;
+      break;
+    }
+    case cJSON_Number: {
+      //convert default JSON Number type to float
+      pVal->type = TSDB_DATA_TYPE_FLOAT;
+      pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+      pVal->value = tcalloc(pVal->length, 1);
+      *(float *)(pVal->value) = (float)(root->valuedouble);
+      break;
+    }
+    case cJSON_String: {
+      //convert default JSON String type to nchar
+      pVal->type = TSDB_DATA_TYPE_NCHAR;
+      //pVal->length = wcslen((wchar_t *)root->valuestring) * TSDB_NCHAR_SIZE;
+      pVal->length = (int16_t)strlen(root->valuestring);
+      pVal->value = tcalloc(pVal->length + 1, 1);
+      memcpy(pVal->value, root->valuestring, pVal->length);
+      break;
+    }
+    case cJSON_Object: {
+      int32_t ret = parseValueFromJSONObj(root, pVal, info);
+      if (ret != TSDB_CODE_SUCCESS) {
+        tscError("OTD:0x%"PRIx64" Failed to parse timestamp from JSON Obj", info->id);
+        return ret;
+      }
+      break;
+    }
+    default:
+      return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t parseMetricValueFromJSON(cJSON *root, TAOS_SML_KV **pKVs, int *num_kvs, SSmlLinesInfo* info) {
+  //skip timestamp
+  TAOS_SML_KV *pVal = *pKVs + 1;
+  char key[] = OTD_METRIC_VALUE_COLUMN_NAME;
+
+  cJSON *metricVal = cJSON_GetObjectItem(root, "value");
+  if (metricVal == NULL) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  int32_t ret = parseValueFromJSON(metricVal, pVal, info);
+  if (ret != TSDB_CODE_SUCCESS) {
+    return ret;
+  }
+
+  pVal->key = tcalloc(sizeof(key), 1);
+  memcpy(pVal->key, key, sizeof(key));
+
+  *num_kvs += 1;
+  return TSDB_CODE_SUCCESS;
+
+}
+
+int32_t parseTagsFromJSON(cJSON *root, TAOS_SML_KV **pKVs, int *num_kvs, char **childTableName, SSmlLinesInfo* info) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+
+  cJSON *tags = cJSON_GetObjectItem(root, "tags");
+  if (tags == NULL || tags->type != cJSON_Object) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  //only pick up the first ID value as child table name
+  cJSON *id = cJSON_GetObjectItem(tags, "ID");
+  if (id != NULL) {
+    size_t idLen = strlen(id->valuestring);
+    ret = isValidChildTableName(id->valuestring, (int16_t)idLen);
+    if (ret != TSDB_CODE_SUCCESS) {
+      return ret;
+    }
+    *childTableName = tcalloc(idLen + 1, sizeof(char));
+    memcpy(*childTableName, id->valuestring, idLen);
+    //remove all ID fields from tags list no case sensitive
+    while (id != NULL) {
+      cJSON_DeleteItemFromObject(tags, "ID");
+      id = cJSON_GetObjectItem(tags, "ID");
+    }
+  }
+
+  int32_t tagNum = cJSON_GetArraySize(tags);
+  //at least one tag pair required
+  if (tagNum <= 0) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  //allocate memory for tags
+  *pKVs = tcalloc(tagNum, sizeof(TAOS_SML_KV));
+  TAOS_SML_KV *pkv = *pKVs;
+
+  for (int32_t i = 0; i < tagNum; ++i) {
+    cJSON *tag = cJSON_GetArrayItem(tags, i);
+    if (tag == NULL) {
+      return TSDB_CODE_TSC_INVALID_JSON;
+    }
+    //key
+    size_t keyLen = strlen(tag->string);
+    pkv->key = tcalloc(keyLen + 1, sizeof(char));
+    strncpy(pkv->key, tag->string, keyLen);
+    //value
+    ret = parseValueFromJSON(tag, pkv, info);
+    if (ret != TSDB_CODE_SUCCESS) {
+      return ret;
+    }
+    *num_kvs += 1;
+    pkv++;
+  }
+
+  return ret;
+
+}
+
+int32_t tscParseJSONPayload(cJSON *root, TAOS_SML_DATA_POINT* pSml, SSmlLinesInfo* info) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+
+  if (!cJSON_IsObject(root)) {
+    tscError("OTD:0x%"PRIx64" data point needs to be JSON object", info->id);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  int32_t size = cJSON_GetArraySize(root);
+  //outmost json fields has to be exactly 4
+  if (size != OTD_JSON_FIELDS_NUM) {
+    tscError("OTD:0x%"PRIx64" Invalid number of JSON fields in data point %d", info->id, size);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  //Parse metric
+  ret = parseMetricFromJSON(root, pSml, info);
+  if (ret != TSDB_CODE_SUCCESS) {
+    tscError("OTD:0x%"PRIx64" Unable to parse metric from JSON payload", info->id);
+    return ret;
+  }
+  tscDebug("OTD:0x%"PRIx64" Parse metric from JSON payload finished", info->id);
+
+  //Parse timestamp
+  ret = parseTimestampFromJSON(root, &pSml->fields, &pSml->fieldNum, info);
+  if (ret) {
+    tscError("OTD:0x%"PRIx64" Unable to parse timestamp from JSON payload", info->id);
+    return ret;
+  }
+  tscDebug("OTD:0x%"PRIx64" Parse timestamp from JSON payload finished", info->id);
+
+  //Parse metric value
+  ret = parseMetricValueFromJSON(root, &pSml->fields, &pSml->fieldNum, info);
+  if (ret) {
+    tscError("OTD:0x%"PRIx64" Unable to parse metric value from JSON payload", info->id);
+    return ret;
+  }
+  tscDebug("OTD:0x%"PRIx64" Parse metric value from JSON payload finished", info->id);
+
+  //Parse tags
+  ret = parseTagsFromJSON(root, &pSml->tags, &pSml->tagNum, &pSml->childTableName, info);
+  if (ret) {
+    tscError("OTD:0x%"PRIx64" Unable to parse tags from JSON payload", info->id);
+    return ret;
+  }
+  tscDebug("OTD:0x%"PRIx64" Parse tags from JSON payload finished", info->id);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t tscParseMultiJSONPayload(char* payload, SArray* points, SSmlLinesInfo* info) {
+  int32_t payloadNum, ret;
+  ret = TSDB_CODE_SUCCESS;
+
+  if (payload == NULL) {
+    tscError("OTD:0x%"PRIx64" empty JSON Payload", info->id);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *root = cJSON_Parse(payload);
+  //multiple data points must be sent in JSON array
+  if (cJSON_IsObject(root)) {
+    payloadNum = 1;
+  } else if (cJSON_IsArray(root)) {
+    payloadNum = cJSON_GetArraySize(root);
+  } else {
+    tscError("OTD:0x%"PRIx64" Invalid JSON Payload", info->id);
+    ret = TSDB_CODE_TSC_INVALID_JSON;
+    goto PARSE_JSON_OVER;
+  }
+
+  for (int32_t i = 0; i < payloadNum; ++i) {
+    TAOS_SML_DATA_POINT point = {0};
+    cJSON *dataPoint = (payloadNum == 1) ? root : cJSON_GetArrayItem(root, i);
+
+    ret = tscParseJSONPayload(dataPoint, &point, info);
+    if (ret != TSDB_CODE_SUCCESS) {
+      tscError("OTD:0x%"PRIx64" JSON data point parse failed", info->id);
+      destroySmlDataPoint(&point);
+      goto PARSE_JSON_OVER;
+    } else {
+      tscDebug("OTD:0x%"PRIx64" JSON data point parse success", info->id);
+    }
+    taosArrayPush(points, &point);
+  }
+
+PARSE_JSON_OVER:
+  cJSON_Delete(root);
+  return ret;
+}
+
+int taos_insert_json_payload(TAOS* taos, char* payload) {
+  int32_t code = 0;
+
+  SSmlLinesInfo* info = tcalloc(1, sizeof(SSmlLinesInfo));
+  info->id = genUID();
+
+  if (payload == NULL) {
+    tscError("OTD:0x%"PRIx64" taos_insert_json_payload payload is NULL", info->id);
+    tfree(info);
+    code = TSDB_CODE_TSC_APP_ERROR;
+    return code;
+  }
+
+  SArray* lpPoints = taosArrayInit(1, sizeof(TAOS_SML_DATA_POINT));
+  if (lpPoints == NULL) {
+    tscError("OTD:0x%"PRIx64" taos_insert_json_payload failed to allocate memory", info->id);
+    tfree(info);
+    return TSDB_CODE_TSC_OUT_OF_MEMORY;
+  }
+
+  tscDebug("OTD:0x%"PRIx64" taos_insert_telnet_lines begin inserting %d points", info->id, 1);
+  code = tscParseMultiJSONPayload(payload, lpPoints, info);
+  size_t numPoints = taosArrayGetSize(lpPoints);
+
+  if (code != 0) {
+    goto cleanup;
+  }
+
+  TAOS_SML_DATA_POINT* points = TARRAY_GET_START(lpPoints);
+  code = tscSmlInsert(taos, points, (int)numPoints, info);
+  if (code != 0) {
+    tscError("OTD:0x%"PRIx64" taos_insert_json_payload error: %s", info->id, tstrerror((code)));
+  }
+
+cleanup:
+  tscDebug("OTD:0x%"PRIx64" taos_insert_json_payload finish inserting 1 Point. code: %d", info->id, code);
+  points = TARRAY_GET_START(lpPoints);
+  numPoints = taosArrayGetSize(lpPoints);
+  for (int i = 0; i < numPoints; ++i) {
+    destroySmlDataPoint(points+i);
+  }
+
+  taosArrayDestroy(lpPoints);
+
+  tfree(info);
+  return code;
+}

src/connector/python/taos/cinterface.py

@@ -835,8 +835,14 @@ def taos_insert_telnet_lines(connection, lines):
     p_lines = lines_type(*lines)
     errno = _libtaos.taos_insert_telnet_lines(connection, p_lines, num_of_lines)
     if errno != 0:
-        raise LinesError("insert telnet lines error", errno)
+        raise TelnetLinesError("insert telnet lines error", errno)
 
+def taos_insert_json_payload(connection, payload):
+    # type: (c_void_p, list[str] | tuple(str)) -> None
+    payload = payload.encode("utf-8")
+    errno = _libtaos.taos_insert_json_payload(connection, payload)
+    if errno != 0:
+        raise JsonPayloadError("insert json payload error", errno)
 
 class CTaosInterface(object):
     def __init__(self, config=None):

src/connector/python/taos/connection.py

@@ -154,6 +154,25 @@ class TaosConnection(object):
         """
         return taos_insert_telnet_lines(self._conn, lines)
 
+    def insert_json_payload(self, payload):
+        """OpenTSDB HTTP JSON format support
+
+        ## Example
+        "{
+            "metric": "cpu_load_0",
+            "timestamp": 1626006833610123,
+            "value": 55.5,
+            "tags":
+                {
+                    "host": "ubuntu",
+                    "interface": "eth0",
+                    "Id": "tb0"
+                }
+        }"
+
+        """
+        return taos_insert_json_payload(self._conn, payload)
+
     def cursor(self):
         # type: () -> TaosCursor
         """Return a new Cursor object using the connection."""

src/connector/python/taos/error.py

@@ -84,3 +84,13 @@ class LinesError(DatabaseError):
     """taos_insert_lines errors."""
 
     pass
+
+class TelnetLinesError(DatabaseError):
+    """taos_insert_telnet_lines errors."""
+
+    pass
+
+class JsonPayloadError(DatabaseError):
+    """taos_insert_json_payload errors."""
+
+    pass

src/inc/taos.h

@@ -174,6 +174,8 @@ DLL_EXPORT int taos_insert_lines(TAOS* taos, char* lines[], int numLines);
 
 DLL_EXPORT int taos_insert_telnet_lines(TAOS* taos, char* lines[], int numLines);
 
+DLL_EXPORT int taos_insert_json_payload(TAOS* taos, char* payload);
+
 #ifdef __cplusplus
 }
 #endif

src/inc/taoserror.h

@@ -108,6 +108,9 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TSC_INVALID_TAG_LENGTH        TAOS_DEF_ERROR_CODE(0, 0x021E)  //"Invalid tag length")
 #define TSDB_CODE_TSC_INVALID_COLUMN_LENGTH     TAOS_DEF_ERROR_CODE(0, 0x021F)  //"Invalid column length")
 #define TSDB_CODE_TSC_DUP_TAG_NAMES             TAOS_DEF_ERROR_CODE(0, 0x0220)  //"duplicated tag names")
+#define TSDB_CODE_TSC_INVALID_JSON              TAOS_DEF_ERROR_CODE(0, 0x0221)  //"Invalid JSON format")
+#define TSDB_CODE_TSC_INVALID_JSON_TYPE         TAOS_DEF_ERROR_CODE(0, 0x0222)  //"Invalid JSON data type")
+#define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0223)  //"Value out of range")
 
 // mnode
 #define TSDB_CODE_MND_MSG_NOT_PROCESSED         TAOS_DEF_ERROR_CODE(0, 0x0300)  //"Message not processed")

src/util/src/terror.c

@@ -116,6 +116,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_DUP_COL_NAMES,            "duplicated column nam
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_TAG_LENGTH,       "Invalid tag length")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_COLUMN_LENGTH,    "Invalid column length")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_DUP_TAG_NAMES,            "duplicated tag names")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON,             "Invalid JSON format")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_TYPE,        "Invalid JSON data type")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_VALUE_OUT_OF_RANGE,       "Value out of range")
 
 // mnode
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MSG_NOT_PROCESSED,        "Message not processed")

tests/examples/c/apitest.c

@@ -2,6 +2,7 @@
 // to compile: gcc -o apitest apitest.c -ltaos
 
 #include "taoserror.h"
+#include "cJSON.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -1020,7 +1021,7 @@ int32_t verify_schema_less(TAOS* taos) {
 void verify_telnet_insert(TAOS* taos) {
   TAOS_RES *result;
 
-  result = taos_query(taos, "drop database if exists test;");
+  result = taos_query(taos, "drop database if exists db;");
   taos_free_result(result);
   usleep(100000);
   result = taos_query(taos, "create database db precision 'ms';");
@@ -1038,7 +1039,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines0, 3);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines0 code: %d, %s.\n", code, tstrerror(code));
   }
 
   /* timestamp */
@@ -1052,7 +1053,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines1, 6);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines1 code: %d, %s.\n", code, tstrerror(code));
   }
 
   /* metric value */
@@ -1063,7 +1064,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_0, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_0 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //smallint
@@ -1073,7 +1074,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_1, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_1 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //int
@@ -1083,7 +1084,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_2, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_2 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //bigint
@@ -1093,7 +1094,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_3, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_3 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //float
@@ -1112,7 +1113,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_4, 11);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_4 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //double
@@ -1130,7 +1131,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_5, 10);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_5 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //bool
@@ -1148,7 +1149,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_6, 10);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_6 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //binary
@@ -1159,7 +1160,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_7, 3);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_7 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //nchar
@@ -1169,7 +1170,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines2_8, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines2_8 code: %d, %s.\n", code, tstrerror(code));
   }
 
   /* tags */
@@ -1180,7 +1181,7 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines3_0, 2);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines3_0 code: %d, %s.\n", code, tstrerror(code));
   }
 
   //tag ID as child table name
@@ -1191,12 +1192,745 @@ void verify_telnet_insert(TAOS* taos) {
   };
   code = taos_insert_telnet_lines(taos, lines3_1, 3);
   if (code) {
-    printf("code: %d, %s.\n", code, tstrerror(code));
+    printf("lines3_1 code: %d, %s.\n", code, tstrerror(code));
   }
 
   return;
 }
 
+void verify_json_insert(TAOS* taos) {
+  TAOS_RES *result;
+
+  result = taos_query(taos, "drop database if exists db;");
+  taos_free_result(result);
+  usleep(100000);
+  result = taos_query(taos, "create database db precision 'ms';");
+  taos_free_result(result);
+  usleep(100000);
+
+  (void)taos_select_db(taos, "db");
+  int32_t code = 0;
+
+  char *message =
+  "{                                      \
+      \"metric\":\"cpu_load_0\",          \
+      \"timestamp\": 1626006833610123,    \
+      \"value\": 55.5,                    \
+      \"tags\":                           \
+          {                               \
+              \"host\": \"ubuntu\",       \
+              \"interface1\": \"eth0\",   \
+              \"Id\": \"tb0\"             \
+          }                               \
+  }";
+
+  code = taos_insert_json_payload(taos, message);
+  if (code) {
+    printf("payload_0 code: %d, %s.\n", code, tstrerror(code));
+  }
+
+  char *message1 =
+  "[                                       \
+    {                                      \
+       \"metric\":\"cpu_load_1\",          \
+       \"timestamp\": 1626006833610123,    \
+       \"value\": 55.5,                    \
+       \"tags\":                           \
+           {                               \
+               \"host\": \"ubuntu\",       \
+               \"interface\": \"eth1\",    \
+               \"Id\": \"tb1\"             \
+           }                               \
+    },                                     \
+    {                                      \
+       \"metric\":\"cpu_load_2\",          \
+       \"timestamp\": 1626006833610123,    \
+       \"value\": 55.5,                    \
+       \"tags\":                           \
+           {                               \
+               \"host\": \"ubuntu\",       \
+               \"interface\": \"eth2\",    \
+               \"Id\": \"tb2\"             \
+           }                               \
+    }                                      \
+   ]";
+
+  code = taos_insert_json_payload(taos, message1);
+  if (code) {
+    printf("payload_1 code: %d, %s.\n", code, tstrerror(code));
+  }
+
+  char *message2 =
+  "[                                       \
+    {                                      \
+       \"metric\":\"cpu_load_3\",          \
+       \"timestamp\":                      \
+           {                               \
+             \"value\": 1626006833610123,  \
+             \"type\": \"us\"              \
+           },                              \
+       \"value\":                          \
+           {                               \
+             \"value\": 55,                \
+             \"type\": \"int\"             \
+           },                              \
+       \"tags\":                           \
+           {                               \
+               \"host\":                   \
+                  {                        \
+                    \"value\": \"ubuntu\", \
+                    \"type\": \"binary\"   \
+                  },                       \
+               \"interface\":              \
+                  {                        \
+                    \"value\": \"eth3\",   \
+                    \"type\": \"nchar\"    \
+                  },                       \
+               \"ID\": \"tb3\",            \
+               \"port\":                   \
+                  {                        \
+                    \"value\": 4040,       \
+                    \"type\": \"int\"      \
+                  }                        \
+           }                               \
+    },                                     \
+    {                                      \
+       \"metric\":\"cpu_load_4\",          \
+       \"timestamp\": 1626006833610123,    \
+       \"value\": 66.6,                    \
+       \"tags\":                           \
+           {                               \
+               \"host\": \"ubuntu\",       \
+               \"interface\": \"eth4\",    \
+               \"Id\": \"tb4\"             \
+           }                               \
+    }                                      \
+   ]";
+  code = taos_insert_json_payload(taos, message2);
+  if (code) {
+    printf("payload_2 code: %d, %s.\n", code, tstrerror(code));
+  }
+
+
+  cJSON *payload, *tags;
+  char *payload_str;
+
+  /* Default format */
+  //number
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_0");
+  cJSON_AddNumberToObject(payload, "timestamp", 1626006833610123);
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_0 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //true
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_1");
+  cJSON_AddNumberToObject(payload, "timestamp", 1626006833610123);
+  cJSON_AddTrueToObject(payload, "value");
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_1 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //false
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_2");
+  cJSON_AddNumberToObject(payload, "timestamp", 1626006833610123);
+  cJSON_AddFalseToObject(payload, "value");
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_2 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //string
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_3");
+  cJSON_AddNumberToObject(payload, "timestamp", 1626006833610123);
+  cJSON_AddStringToObject(payload, "value", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_3 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //timestamp 0 -> current time
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_4");
+  cJSON_AddNumberToObject(payload, "timestamp", 0);
+  cJSON_AddNumberToObject(payload, "value", 123);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_4 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //ID
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb0_5");
+  cJSON_AddNumberToObject(payload, "timestamp", 0);
+  cJSON_AddNumberToObject(payload, "value", 123);
+  tags = cJSON_CreateObject();
+  cJSON_AddStringToObject(tags, "ID", "tb0_5");
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddStringToObject(tags, "iD", "tb000");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddStringToObject(tags, "id", "tb555");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload0_5 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  /* Nested format */
+  //timestamp
+  cJSON *timestamp;
+  //seconds
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb1_0");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload1_0 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //milleseconds
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb1_1");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833610);
+  cJSON_AddStringToObject(timestamp, "type", "ms");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload1_1 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //microseconds
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb1_2");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833610123);
+  cJSON_AddStringToObject(timestamp, "type", "us");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload1_2 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //nanoseconds
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb1_3");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833610123321);
+  cJSON_AddStringToObject(timestamp, "type", "ns");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload1_3 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //now
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb1_4");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 0);
+  cJSON_AddStringToObject(timestamp, "type", "ns");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  cJSON_AddNumberToObject(payload, "value", 10);
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload1_4 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //metric value
+  cJSON *metric_val;
+  //bool
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_0");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddTrueToObject(metric_val, "value");
+  cJSON_AddStringToObject(metric_val, "type", "bool");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_0 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //tinyint
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_1");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 127);
+  cJSON_AddStringToObject(metric_val, "type", "tinyint");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_1 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //smallint
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_2");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 32767);
+  cJSON_AddStringToObject(metric_val, "type", "smallint");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_2 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //int
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_3");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 2147483647);
+  cJSON_AddStringToObject(metric_val, "type", "int");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_3 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //bigint
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_4");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 9223372036854775807);
+  cJSON_AddStringToObject(metric_val, "type", "bigint");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_4 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //float
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_5");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 11.12345);
+  cJSON_AddStringToObject(metric_val, "type", "float");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_5 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //double
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_6");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddNumberToObject(metric_val, "value", 22.123456789);
+  cJSON_AddStringToObject(metric_val, "type", "double");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_6 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //binary
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_7");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddStringToObject(metric_val, "value", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddStringToObject(metric_val, "type", "binary");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_7 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //nchar
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb2_8");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddStringToObject(metric_val, "value", "你好");
+  cJSON_AddStringToObject(metric_val, "type", "nchar");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tags, "t1");
+  cJSON_AddFalseToObject(tags, "t2");
+  cJSON_AddNumberToObject(tags, "t3", 10);
+  cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
+  cJSON_AddItemToObject(payload, "tags", tags);
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload2_8 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+
+  //tag value
+  cJSON *tag;
+
+  payload = cJSON_CreateObject();
+  cJSON_AddStringToObject(payload, "metric", "stb3_0");
+
+  timestamp = cJSON_CreateObject();
+  cJSON_AddNumberToObject(timestamp, "value", 1626006833);
+  cJSON_AddStringToObject(timestamp, "type", "s");
+  cJSON_AddItemToObject(payload, "timestamp", timestamp);
+
+  metric_val = cJSON_CreateObject();
+  cJSON_AddStringToObject(metric_val, "value", "hello");
+  cJSON_AddStringToObject(metric_val, "type", "nchar");
+  cJSON_AddItemToObject(payload, "value", metric_val);
+
+  tags = cJSON_CreateObject();
+
+  tag = cJSON_CreateObject();
+  cJSON_AddTrueToObject(tag, "value");
+  cJSON_AddStringToObject(tag, "type", "bool");
+  cJSON_AddItemToObject(tags, "t1", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddFalseToObject(tag, "value");
+  cJSON_AddStringToObject(tag, "type", "bool");
+  cJSON_AddItemToObject(tags, "t2", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 127);
+  cJSON_AddStringToObject(tag, "type", "tinyint");
+  cJSON_AddItemToObject(tags, "t3", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 32767);
+  cJSON_AddStringToObject(tag, "type", "smallint");
+  cJSON_AddItemToObject(tags, "t4", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 2147483647);
+  cJSON_AddStringToObject(tag, "type", "int");
+  cJSON_AddItemToObject(tags, "t5", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 9223372036854775807);
+  cJSON_AddStringToObject(tag, "type", "bigint");
+  cJSON_AddItemToObject(tags, "t6", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 11.12345);
+  cJSON_AddStringToObject(tag, "type", "float");
+  cJSON_AddItemToObject(tags, "t7", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddNumberToObject(tag, "value", 22.1234567890);
+  cJSON_AddStringToObject(tag, "type", "double");
+  cJSON_AddItemToObject(tags, "t8", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddStringToObject(tag, "value", "binary_val");
+  cJSON_AddStringToObject(tag, "type", "binary");
+  cJSON_AddItemToObject(tags, "t9", tag);
+
+  tag = cJSON_CreateObject();
+  cJSON_AddStringToObject(tag, "value", "你好");
+  cJSON_AddStringToObject(tag, "type", "nchar");
+  cJSON_AddItemToObject(tags, "t10", tag);
+
+  cJSON_AddItemToObject(payload, "tags", tags);
+
+  payload_str = cJSON_Print(payload);
+  //printf("%s\n", payload_str);
+
+  code = taos_insert_json_payload(taos, payload_str);
+  if (code) {
+    printf("payload3_0 code: %d, %s.\n", code, tstrerror(code));
+  }
+  free(payload_str);
+  cJSON_Delete(payload);
+}
+
 int main(int argc, char *argv[]) {
   const char* host = "127.0.0.1";
   const char* user = "root";
@@ -1220,6 +1954,9 @@ int main(int argc, char *argv[]) {
   printf("************  verify telnet-insert  *************\n");
   verify_telnet_insert(taos);
 
+  printf("************  verify json-insert  *************\n");
+  verify_json_insert(taos);
+
   printf("************  verify query  *************\n");
   verify_query(taos);
 

tests/examples/c/makefile

@@ -6,8 +6,8 @@ TARGET=exe
 LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt
 CFLAGS = -O3 -g -Wall -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
 	-Wno-char-subscripts -D_REENTRANT -Wno-format -D_REENTRANT -DLINUX \
-	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99
-
+	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
+	-I../../../deps/cJson/inc
 all: $(TARGET)
 
 exe:

tests/pytest/insert/insertJSONPayload.py

+###################################################################
+#           Copyright (c) 2021 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+        self._conn = conn
+
+    def run(self):
+        print("running {}".format(__file__))
+        tdSql.execute("drop database if exists test")
+        tdSql.execute("create database if not exists test precision 'us'")
+        tdSql.execute('use test')
+
+
+        ### Default format ###
+        ### metric value ###
+        print("============= step1 : test metric value types  ================")
+        payload = '''
+        {
+	    "metric":	"stb0_0",
+	    "timestamp":	1626006833610123,
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb0_0")
+        tdSql.checkData(1, 1, "FLOAT")
+
+        payload = '''
+        {
+	    "metric":	"stb0_1",
+	    "timestamp":	1626006833610123,
+	    "value":	true,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb0_1")
+        tdSql.checkData(1, 1, "BOOL")
+
+        payload = '''
+        {
+	    "metric":	"stb0_2",
+	    "timestamp":	1626006833610123,
+	    "value":	false,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb0_2")
+        tdSql.checkData(1, 1, "BOOL")
+
+        payload = '''
+        {
+	    "metric":	"stb0_3",
+	    "timestamp":	1626006833610123,
+	    "value":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>",
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb0_3")
+        tdSql.checkData(1, 1, "NCHAR")
+
+        ### timestamp 0 ###
+        payload = '''
+        {
+	    "metric":	"stb0_4",
+	    "timestamp":	0,
+	    "value":	123,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+
+        ### ID ###
+        payload = '''
+        {
+	    "metric":	"stb0_5",
+	    "timestamp":	0,
+	    "value":	123,
+	    "tags":	{
+		"ID":	"tb0_5",
+		"t1":	true,
+		"iD":	"tb000",
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>",
+		"id":	"tb555"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("select tbname from stb0_5")
+        tdSql.checkData(0, 0, "tb0_5")
+
+        ### Nested format ###
+        ### timestamp ###
+        #seconds
+        payload = '''
+        {
+	    "metric":	"stb1_0",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("select ts from stb1_0")
+        tdSql.checkData(0, 0, "2021-07-11 20:33:53.000000")
+
+        #milliseconds
+        payload = '''
+        {
+	    "metric":	"stb1_1",
+	    "timestamp":	{
+		"value":	1626006833610,
+		"type":	"ms"
+	    },
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("select ts from stb1_1")
+        tdSql.checkData(0, 0, "2021-07-11 20:33:53.610000")
+
+        #microseconds
+        payload = '''
+        {
+	    "metric":	"stb1_2",
+	    "timestamp":	{
+		"value":	1626006833610123,
+		"type":	"us"
+	    },
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("select ts from stb1_2")
+        tdSql.checkData(0, 0, "2021-07-11 20:33:53.610123")
+
+        #nanoseconds
+        payload = '''
+        {
+	    "metric":	"stb1_3",
+	    "timestamp":	{
+                "value":	1.6260068336101233e+18,
+		"type":	"ns"
+	    },
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("select ts from stb1_3")
+        tdSql.checkData(0, 0, "2021-07-11 20:33:53.610123")
+
+        #now
+        tdSql.execute('use test')
+        payload = '''
+        {
+	    "metric":	"stb1_4",
+	    "timestamp":	{
+		"value":	0,
+		"type":	"ns"
+	    },
+	    "value":	10,
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        ### metric value ###
+        payload = '''
+        {
+	    "metric":	"stb2_0",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	true,
+		"type":	"bool"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_0")
+        tdSql.checkData(1, 1, "BOOL")
+
+        payload = '''
+        {
+	    "metric":	"stb2_1",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	127,
+		"type":	"tinyint"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_1")
+        tdSql.checkData(1, 1, "TINYINT")
+
+        payload = '''
+        {
+	    "metric":	"stb2_2",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	32767,
+		"type":	"smallint"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_2")
+        tdSql.checkData(1, 1, "SMALLINT")
+
+        payload = '''
+        {
+	    "metric":	"stb2_3",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	2147483647,
+		"type":	"int"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_3")
+        tdSql.checkData(1, 1, "INT")
+
+        payload = '''
+        {
+	    "metric":	"stb2_4",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	9.2233720368547758e+18,
+		"type":	"bigint"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_4")
+        tdSql.checkData(1, 1, "BIGINT")
+
+        payload = '''
+        {
+	    "metric":	"stb2_5",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	11.12345,
+		"type":	"float"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_5")
+        tdSql.checkData(1, 1, "FLOAT")
+
+        payload = '''
+        {
+	    "metric":	"stb2_6",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	22.123456789,
+		"type":	"double"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_6")
+        tdSql.checkData(1, 1, "DOUBLE")
+
+        payload = '''
+        {
+	    "metric":	"stb2_7",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>",
+		"type":	"binary"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_7")
+        tdSql.checkData(1, 1, "BINARY")
+
+        payload = '''
+        {
+	    "metric":	"stb2_8",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	"你好",
+		"type":	"nchar"
+	    },
+	    "tags":	{
+		"t1":	true,
+		"t2":	false,
+		"t3":	10,
+		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb2_8")
+        tdSql.checkData(1, 1, "NCHAR")
+
+        ### tag value ###
+
+        payload = '''
+        {
+	    "metric":	"stb3_0",
+	    "timestamp":	{
+		"value":	1626006833,
+		"type":	"s"
+	    },
+	    "value":	{
+		"value":	"hello",
+		"type":	"nchar"
+	    },
+	    "tags":	{
+		"t1":	{
+			"value":	true,
+			"type":	"bool"
+		},
+		"t2":	{
+			"value":	127,
+			"type":	"tinyint"
+		},
+		"t3":	{
+			"value":	32767,
+			"type":	"smallint"
+		},
+		"t4":	{
+			"value":	2147483647,
+			"type":	"int"
+		},
+		"t5":	{
+			"value":	9.2233720368547758e+18,
+			"type":	"bigint"
+		},
+		"t6":	{
+			"value":	11.12345,
+			"type":	"float"
+		},
+		"t7":	{
+			"value":	22.123456789,
+			"type":	"double"
+		},
+		"t8":	{
+			"value":	"binary_val",
+			"type":	"binary"
+		},
+		"t9":	{
+			"value":	"你好",
+			"type":	"nchar"
+		}
+	    }
+        }
+        '''
+        code = self._conn.insert_json_payload(payload)
+        print("insert_json_payload result {}".format(code))
+
+        tdSql.query("describe stb3_0")
+        tdSql.checkData(2, 1, "BOOL")
+        tdSql.checkData(3, 1, "TINYINT")
+        tdSql.checkData(4, 1, "SMALLINT")
+        tdSql.checkData(5, 1, "INT")
+        tdSql.checkData(6, 1, "BIGINT")
+        tdSql.checkData(7, 1, "FLOAT")
+        tdSql.checkData(8, 1, "DOUBLE")
+        tdSql.checkData(9, 1, "BINARY")
+        tdSql.checkData(10, 1, "NCHAR")
+
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())