提交 58ff5964 编写于 作者: G Ganlin Zhao

[TD-6442]<feature>: Support OpenTSDB telnet style data import format

上级 368d50f2
/*
* Copyright (c) 2021 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TDENGINE_TSCPARSELINE_H
#define TDENGINE_TSCPARSELINE_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
char* key;
uint8_t type;
int16_t length;
char* value;
} TAOS_SML_KV;
typedef struct {
char* stableName;
char* childTableName;
TAOS_SML_KV* tags;
int32_t tagNum;
// first kv must be timestamp
TAOS_SML_KV* fields;
int32_t fieldNum;
} TAOS_SML_DATA_POINT;
typedef enum {
SML_TIME_STAMP_NOW,
SML_TIME_STAMP_SECONDS,
SML_TIME_STAMP_MILLI_SECONDS,
SML_TIME_STAMP_MICRO_SECONDS,
SML_TIME_STAMP_NANO_SECONDS
} SMLTimeStampType;
typedef struct {
uint64_t id;
SHashObj* smlDataToSchema;
} SSmlLinesInfo;
int taos_sml_insert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint);
bool checkDuplicateKey(char *key, SHashObj *pHash, SSmlLinesInfo* info);
int32_t isValidChildTableName(const char *pTbName, int16_t len);
bool convertSmlValueType(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info);
int32_t convertSmlTimeStamp(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info);
#ifdef __cplusplus
}
#endif
#endif // TDENGINE_TSCPARSELINE_H
......@@ -17,6 +17,7 @@
#include "tscLog.h"
#include "taos.h"
#include "tscParseLine.h"
typedef struct {
char sTableName[TSDB_TABLE_NAME_LEN];
......@@ -27,38 +28,6 @@ typedef struct {
uint8_t precision;
} SSmlSTableSchema;
typedef struct {
char* key;
uint8_t type;
int16_t length;
char* value;
} TAOS_SML_KV;
typedef struct {
char* stableName;
char* childTableName;
TAOS_SML_KV* tags;
int32_t tagNum;
// first kv must be timestamp
TAOS_SML_KV* fields;
int32_t fieldNum;
} TAOS_SML_DATA_POINT;
typedef enum {
SML_TIME_STAMP_NOW,
SML_TIME_STAMP_SECONDS,
SML_TIME_STAMP_MILLI_SECONDS,
SML_TIME_STAMP_MICRO_SECONDS,
SML_TIME_STAMP_NANO_SECONDS
} SMLTimeStampType;
typedef struct {
uint64_t id;
SHashObj* smlDataToSchema;
} SSmlLinesInfo;
//=================================================================================================
static uint64_t linesSmlHandleId = 0;
......@@ -1565,8 +1534,8 @@ static bool convertStrToNumber(TAOS_SML_KV *pVal, char*str, SSmlLinesInfo* info)
return true;
}
//len does not include '\0' from value.
static bool convertSmlValueType(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info) {
bool convertSmlValueType(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info) {
if (len <= 0) {
return false;
}
......@@ -1749,8 +1718,8 @@ static int32_t getTimeStampValue(char *value, uint16_t len,
return TSDB_CODE_SUCCESS;
}
static int32_t convertSmlTimeStamp(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info) {
int32_t convertSmlTimeStamp(TAOS_SML_KV *pVal, char *value,
uint16_t len, SSmlLinesInfo* info) {
int32_t ret;
SMLTimeStampType type;
int64_t tsVal;
......@@ -1805,7 +1774,7 @@ static int32_t parseSmlTimeStamp(TAOS_SML_KV **pTS, const char **index, SSmlLine
return ret;
}
static bool checkDuplicateKey(char *key, SHashObj *pHash, SSmlLinesInfo* info) {
bool checkDuplicateKey(char *key, SHashObj *pHash, SSmlLinesInfo* info) {
char *val = NULL;
char *cur = key;
char keyLower[TSDB_COL_NAME_LEN];
......@@ -1958,7 +1927,7 @@ static int32_t parseSmlMeasurement(TAOS_SML_DATA_POINT *pSml, const char **index
}
//Table name can only contain digits(0-9),alphebet(a-z),underscore(_)
static int32_t isValidChildTableName(const char *pTbName, int16_t len) {
int32_t isValidChildTableName(const char *pTbName, int16_t len) {
const char *cur = pTbName;
for (int i = 0; i < len; ++i) {
if(!isdigit(cur[i]) && !isalpha(cur[i]) && (cur[i] != '_')) {
......@@ -2212,308 +2181,3 @@ cleanup:
return code;
}
//=========================================================================
// telnet style API parser
static int32_t parseTelnetMetric(TAOS_SML_DATA_POINT *pSml, const char **index, SSmlLinesInfo* info) {
const char *cur = *index;
uint16_t len = 0;
pSml->stableName = tcalloc(TSDB_TABLE_NAME_LEN + 1, 1); // +1 to avoid 1772 line over write
if (pSml->stableName == NULL){
return TSDB_CODE_TSC_OUT_OF_MEMORY;
}
if (isdigit(*cur)) {
tscError("SML:0x%"PRIx64" Metric cannnot start with digit", info->id);
tfree(pSml->stableName);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
while (*cur != '\0') {
if (len > TSDB_TABLE_NAME_LEN) {
tscError("SML:0x%"PRIx64" Metric cannot exceeds 193 characters", info->id);
tfree(pSml->stableName);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (*cur == ' ') {
break;
}
pSml->stableName[len] = *cur;
cur++;
len++;
}
pSml->stableName[len] = '\0';
*index = cur + 1;
tscDebug("SML:0x%"PRIx64" Stable name in metric:%s|len:%d", info->id, pSml->stableName, len);
return TSDB_CODE_SUCCESS;
}
static int32_t parseTelnetTimeStamp(TAOS_SML_KV **pTS, int *num_kvs, const char **index, SSmlLinesInfo* info) {
//Timestamp must be the first KV to parse
assert(*num_kvs == 0);
const char *start, *cur;
int32_t ret = TSDB_CODE_SUCCESS;
int len = 0;
char key[] = "_ts";
char *value = NULL;
start = cur = *index;
*pTS = calloc(1, sizeof(TAOS_SML_KV));
while(*cur != '\0') {
if (*cur == ' ') {
break;
}
cur++;
len++;
}
if (len > 0) {
value = calloc(len + 1, 1);
memcpy(value, start, len);
} else {
free(*pTS);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
ret = convertSmlTimeStamp(*pTS, value, len, info);
if (ret) {
free(value);
free(*pTS);
return ret;
}
free(value);
(*pTS)->key = calloc(sizeof(key), 1);
memcpy((*pTS)->key, key, sizeof(key));
*num_kvs += 1;
*index = cur + 1;
return ret;
}
static int32_t parseTelnetMetricValue(TAOS_SML_KV **pKVs, int *num_kvs, const char **index, SSmlLinesInfo* info) {
//SKip timestamp
TAOS_SML_KV *pVal = *pKVs + sizeof(TAOS_SML_KV);
const char *start, *cur;
int32_t ret = TSDB_CODE_SUCCESS;
int len = 0;
char key[] = "value";
char *value = NULL;
start = cur = *index;
pVal = calloc(1, sizeof(TAOS_SML_KV));
while(*cur != '\0') {
if (*cur == ' ') {
break;
}
cur++;
len++;
}
if (len > 0) {
value = calloc(len + 1, 1);
memcpy(value, start, len);
} else {
free(pVal);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (!convertSmlValueType(pVal, value, len, info)) {
tscError("SML:0x%"PRIx64" Failed to convert sml value string(%s) to any type",
info->id, value);
free(value);
free(pVal);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
free(value);
pVal->key = calloc(sizeof(key), 1);
memcpy(pVal->key, key, sizeof(key));
*num_kvs += 1;
*index = cur + 1;
return ret;
}
static int32_t parseTelnetTagKey(TAOS_SML_KV *pKV, const char **index, SHashObj *pHash, SSmlLinesInfo* info) {
const char *cur = *index;
char key[TSDB_COL_NAME_LEN + 1]; // +1 to avoid key[len] over write
uint16_t len = 0;
//key field cannot start with digit
if (isdigit(*cur)) {
tscError("SML:0x%"PRIx64" Tag key cannnot start with digit", info->id);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
while (*cur != '\0') {
if (len > TSDB_COL_NAME_LEN) {
tscError("SML:0x%"PRIx64" Key field cannot exceeds 65 characters", info->id);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (*cur == '=') {
break;
}
key[len] = *cur;
cur++;
len++;
}
key[len] = '\0';
if (checkDuplicateKey(key, pHash, info)) {
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
pKV->key = calloc(len + 1, 1);
memcpy(pKV->key, key, len + 1);
//tscDebug("SML:0x%"PRIx64" Key:%s|len:%d", info->id, pKV->key, len);
*index = cur + 1;
return TSDB_CODE_SUCCESS;
}
static bool parseTelnetTagValue(TAOS_SML_KV *pKV, const char **index,
bool *is_last_kv, SSmlLinesInfo* info) {
const char *start, *cur;
char *value = NULL;
uint16_t len = 0;
start = cur = *index;
while (1) {
// ',' or '\0' identifies a value
if (*cur == ',' || *cur == '\0') {
// '\0' indicates end of value
*is_last_kv = (*cur == '\0') ? true : false;
break;
}
cur++;
len++;
}
value = calloc(len + 1, 1);
memcpy(value, start, len);
value[len] = '\0';
if (!convertSmlValueType(pKV, value, len, info)) {
tscError("SML:0x%"PRIx64" Failed to convert sml value string(%s) to any type",
info->id, value);
//free previous alocated key field
free(pKV->key);
pKV->key = NULL;
free(value);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
free(value);
return TSDB_CODE_SUCCESS;
}
static int32_t parseTelnetTagKvs(TAOS_SML_KV **pKVs, int *num_kvs,
const char **index, char* childTableName,
SHashObj *pHash, SSmlLinesInfo* info) {
const char *cur = *index;
int32_t ret = TSDB_CODE_SUCCESS;
TAOS_SML_KV *pkv;
bool is_last_kv = false;
int32_t capacity = 4;
*pKVs = calloc(capacity, sizeof(TAOS_SML_KV));
pkv = *pKVs;
while (*cur != '\0') {
ret = parseTelnetTagKey(pkv, &cur, pHash, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse key", info->id);
return ret;
}
ret = parseTelnetTagValue(pkv, &cur, &is_last_kv, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse value", info->id);
return ret;
}
if ((strcasecmp(pkv->key, "ID") == 0) && pkv->type == TSDB_DATA_TYPE_BINARY) {
ret = isValidChildTableName(pkv->value, pkv->length);
if (ret) {
return ret;
}
childTableName = malloc(pkv->length + 1);
memcpy(childTableName, pkv->value, pkv->length);
childTableName[pkv->length] = '\0';
free(pkv->key);
free(pkv->value);
} else {
*num_kvs += 1;
}
if (is_last_kv) {
break;
}
//reallocate addtional memory for more kvs
TAOS_SML_KV *more_kvs = NULL;
if ((*num_kvs + 1) > capacity) {
capacity *= 3; capacity /= 2;
more_kvs = realloc(*pKVs, capacity * sizeof(TAOS_SML_KV));
} else {
more_kvs = *pKVs;
}
if (!more_kvs) {
return TSDB_CODE_TSC_OUT_OF_MEMORY;
}
*pKVs = more_kvs;
//move pKV points to next TAOS_SML_KV block
pkv = *pKVs + *num_kvs;
}
return ret;
}
int32_t tscParseTelnetAPI(const char* sql, TAOS_SML_DATA_POINT* smlData, SSmlLinesInfo* info) {
const char* index = sql;
int32_t ret = TSDB_CODE_SUCCESS;
//Parse metric
ret = parseTelnetMetric(smlData, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse metric", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse metric finished", info->id);
//Parse timestamp
ret = parseTelnetTimeStamp(&smlData->fields, &smlData->fieldNum, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse timestamp", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse timestamp finished", info->id);
//Parse value
ret = parseTelnetMetricValue(&smlData->fields, &smlData->fieldNum, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse metric value", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse value finished", info->id);
//Parse tagKVs
SHashObj *keyHashTable = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, false);
ret = parseTelnetTagKvs(&smlData->fields, &smlData->fieldNum, &index, smlData->childTableName, keyHashTable, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse tags", info->id);
taosHashCleanup(keyHashTable);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse tags finished", info->id);
taosHashCleanup(keyHashTable);
return TSDB_CODE_SUCCESS;
}
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "hash.h"
#include "taos.h"
#include "tscUtil.h"
#include "tsclient.h"
#include "tscLog.h"
#include "tscParseLine.h"
//=========================================================================
// telnet style API parser
static int32_t parseTelnetMetric(TAOS_SML_DATA_POINT *pSml, const char **index, SSmlLinesInfo* info) {
const char *cur = *index;
uint16_t len = 0;
pSml->stableName = tcalloc(TSDB_TABLE_NAME_LEN + 1, 1); // +1 to avoid 1772 line over write
if (pSml->stableName == NULL){
return TSDB_CODE_TSC_OUT_OF_MEMORY;
}
if (isdigit(*cur)) {
tscError("SML:0x%"PRIx64" Metric cannnot start with digit", info->id);
tfree(pSml->stableName);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
while (*cur != '\0') {
if (len > TSDB_TABLE_NAME_LEN) {
tscError("SML:0x%"PRIx64" Metric cannot exceeds 193 characters", info->id);
tfree(pSml->stableName);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (*cur == ' ') {
break;
}
pSml->stableName[len] = *cur;
cur++;
len++;
}
pSml->stableName[len] = '\0';
*index = cur + 1;
tscDebug("SML:0x%"PRIx64" Stable name in metric:%s|len:%d", info->id, pSml->stableName, len);
return TSDB_CODE_SUCCESS;
}
static int32_t parseTelnetTimeStamp(TAOS_SML_KV **pTS, int *num_kvs, const char **index, SSmlLinesInfo* info) {
//Timestamp must be the first KV to parse
assert(*num_kvs == 0);
const char *start, *cur;
int32_t ret = TSDB_CODE_SUCCESS;
int len = 0;
char key[] = "_ts";
char *value = NULL;
start = cur = *index;
*pTS = calloc(1, sizeof(TAOS_SML_KV));
while(*cur != '\0') {
if (*cur == ' ') {
break;
}
cur++;
len++;
}
if (len > 0) {
value = calloc(len + 1, 1);
memcpy(value, start, len);
} else {
free(*pTS);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
ret = convertSmlTimeStamp(*pTS, value, len, info);
if (ret) {
free(value);
free(*pTS);
return ret;
}
free(value);
(*pTS)->key = calloc(sizeof(key), 1);
memcpy((*pTS)->key, key, sizeof(key));
*num_kvs += 1;
*index = cur + 1;
return ret;
}
static int32_t parseTelnetMetricValue(TAOS_SML_KV **pKVs, int *num_kvs, const char **index, SSmlLinesInfo* info) {
//SKip timestamp
TAOS_SML_KV *pVal = *pKVs + sizeof(TAOS_SML_KV);
const char *start, *cur;
int32_t ret = TSDB_CODE_SUCCESS;
int len = 0;
char key[] = "value";
char *value = NULL;
start = cur = *index;
pVal = calloc(1, sizeof(TAOS_SML_KV));
while(*cur != '\0') {
if (*cur == ' ') {
break;
}
cur++;
len++;
}
if (len > 0) {
value = calloc(len + 1, 1);
memcpy(value, start, len);
} else {
free(pVal);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (!convertSmlValueType(pVal, value, len, info)) {
tscError("SML:0x%"PRIx64" Failed to convert sml value string(%s) to any type",
info->id, value);
free(value);
free(pVal);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
free(value);
pVal->key = calloc(sizeof(key), 1);
memcpy(pVal->key, key, sizeof(key));
*num_kvs += 1;
*index = cur + 1;
return ret;
}
static int32_t parseTelnetTagKey(TAOS_SML_KV *pKV, const char **index, SHashObj *pHash, SSmlLinesInfo* info) {
const char *cur = *index;
char key[TSDB_COL_NAME_LEN + 1]; // +1 to avoid key[len] over write
uint16_t len = 0;
//key field cannot start with digit
if (isdigit(*cur)) {
tscError("SML:0x%"PRIx64" Tag key cannnot start with digit", info->id);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
while (*cur != '\0') {
if (len > TSDB_COL_NAME_LEN) {
tscError("SML:0x%"PRIx64" Key field cannot exceeds 65 characters", info->id);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
if (*cur == '=') {
break;
}
key[len] = *cur;
cur++;
len++;
}
key[len] = '\0';
if (checkDuplicateKey(key, pHash, info)) {
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
pKV->key = calloc(len + 1, 1);
memcpy(pKV->key, key, len + 1);
//tscDebug("SML:0x%"PRIx64" Key:%s|len:%d", info->id, pKV->key, len);
*index = cur + 1;
return TSDB_CODE_SUCCESS;
}
static bool parseTelnetTagValue(TAOS_SML_KV *pKV, const char **index,
bool *is_last_kv, SSmlLinesInfo* info) {
const char *start, *cur;
char *value = NULL;
uint16_t len = 0;
start = cur = *index;
while (1) {
// ',' or '\0' identifies a value
if (*cur == ',' || *cur == '\0') {
// '\0' indicates end of value
*is_last_kv = (*cur == '\0') ? true : false;
break;
}
cur++;
len++;
}
value = calloc(len + 1, 1);
memcpy(value, start, len);
value[len] = '\0';
if (!convertSmlValueType(pKV, value, len, info)) {
tscError("SML:0x%"PRIx64" Failed to convert sml value string(%s) to any type",
info->id, value);
//free previous alocated key field
free(pKV->key);
pKV->key = NULL;
free(value);
return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
}
free(value);
return TSDB_CODE_SUCCESS;
}
static int32_t parseTelnetTagKvs(TAOS_SML_KV **pKVs, int *num_kvs,
const char **index, char* childTableName,
SHashObj *pHash, SSmlLinesInfo* info) {
const char *cur = *index;
int32_t ret = TSDB_CODE_SUCCESS;
TAOS_SML_KV *pkv;
bool is_last_kv = false;
int32_t capacity = 4;
*pKVs = calloc(capacity, sizeof(TAOS_SML_KV));
pkv = *pKVs;
while (*cur != '\0') {
ret = parseTelnetTagKey(pkv, &cur, pHash, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse key", info->id);
return ret;
}
ret = parseTelnetTagValue(pkv, &cur, &is_last_kv, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse value", info->id);
return ret;
}
if ((strcasecmp(pkv->key, "ID") == 0) && pkv->type == TSDB_DATA_TYPE_BINARY) {
ret = isValidChildTableName(pkv->value, pkv->length);
if (ret) {
return ret;
}
childTableName = malloc(pkv->length + 1);
memcpy(childTableName, pkv->value, pkv->length);
childTableName[pkv->length] = '\0';
free(pkv->key);
free(pkv->value);
} else {
*num_kvs += 1;
}
if (is_last_kv) {
break;
}
//reallocate addtional memory for more kvs
TAOS_SML_KV *more_kvs = NULL;
if ((*num_kvs + 1) > capacity) {
capacity *= 3; capacity /= 2;
more_kvs = realloc(*pKVs, capacity * sizeof(TAOS_SML_KV));
} else {
more_kvs = *pKVs;
}
if (!more_kvs) {
return TSDB_CODE_TSC_OUT_OF_MEMORY;
}
*pKVs = more_kvs;
//move pKV points to next TAOS_SML_KV block
pkv = *pKVs + *num_kvs;
}
return ret;
}
int32_t tscParseTelnetLine(const char* line, TAOS_SML_DATA_POINT* smlData, SSmlLinesInfo* info) {
const char* index = line;
int32_t ret = TSDB_CODE_SUCCESS;
//Parse metric
ret = parseTelnetMetric(smlData, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse metric", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse metric finished", info->id);
//Parse timestamp
ret = parseTelnetTimeStamp(&smlData->fields, &smlData->fieldNum, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse timestamp", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse timestamp finished", info->id);
//Parse value
ret = parseTelnetMetricValue(&smlData->fields, &smlData->fieldNum, &index, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse metric value", info->id);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse value finished", info->id);
//Parse tagKVs
SHashObj *keyHashTable = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, false);
ret = parseTelnetTagKvs(&smlData->fields, &smlData->fieldNum, &index, smlData->childTableName, keyHashTable, info);
if (ret) {
tscError("SML:0x%"PRIx64" Unable to parse tags", info->id);
taosHashCleanup(keyHashTable);
return ret;
}
tscDebug("SML:0x%"PRIx64" Parse tags finished", info->id);
taosHashCleanup(keyHashTable);
return TSDB_CODE_SUCCESS;
}
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