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homework-jianmu/source/client/src/clientMain.c

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/*
* Copyright (c) 2019 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/>.
*/
#include "catalog.h"
#include "clientInt.h"
#include "clientLog.h"
#include "clientStmt.h"
#include "os.h"
#include "query.h"
#include "scheduler.h"
#include "tglobal.h"
#include "tmsg.h"
#include "tref.h"
#include "trpc.h"
#include "version.h"
#include "functionMgt.h"
#define TSC_VAR_NOT_RELEASE 1
#define TSC_VAR_RELEASED 0
static int32_t sentinel = TSC_VAR_NOT_RELEASE;
static int32_t createParseContext(const SRequestObj *pRequest, SParseContext **pCxt);
int taos_options(TSDB_OPTION option, const void *arg, ...) {
static int32_t lock = 0;
for (int i = 1; atomic_val_compare_exchange_32(&lock, 0, 1) != 0; ++i) {
if (i % 1000 == 0) {
tscInfo("haven't acquire lock after spin %d times.", i);
sched_yield();
}
}
int ret = taos_options_imp(option, (const char *)arg);
atomic_store_32(&lock, 0);
return ret;
}
// this function may be called by user or system, or by both simultaneously.
void taos_cleanup(void) {
tscInfo("start to cleanup client environment");
if (atomic_val_compare_exchange_32(&sentinel, TSC_VAR_NOT_RELEASE, TSC_VAR_RELEASED) != TSC_VAR_NOT_RELEASE) {
return;
}
int32_t id = clientReqRefPool;
clientReqRefPool = -1;
taosCloseRef(id);
cleanupTaskQueue();
fmFuncMgtDestroy();
qCleanupKeywordsTable();
id = clientConnRefPool;
clientConnRefPool = -1;
taosCloseRef(id);
hbMgrCleanUp();
catalogDestroy();
schedulerDestroy();
rpcCleanup();
tscInfo("all local resources released");
taosCleanupCfg();
taosCloseLog();
}
setConfRet taos_set_config(const char *config) {
// TODO
setConfRet ret = {SET_CONF_RET_SUCC, {0}};
return ret;
}
TAOS *taos_connect(const char *ip, const char *user, const char *pass, const char *db, uint16_t port) {
tscDebug("try to connect to %s:%u, user:%s db:%s", ip, port, user, db);
if (user == NULL) {
user = TSDB_DEFAULT_USER;
}
if (pass == NULL) {
pass = TSDB_DEFAULT_PASS;
}
STscObj* pObj = taos_connect_internal(ip, user, pass, NULL, db, port, CONN_TYPE__QUERY);
if (pObj) {
return pObj->id;
}
return NULL;
}
void taos_close_internal(void *taos) {
if (taos == NULL) {
return;
}
STscObj *pTscObj = (STscObj *)taos;
tscDebug("0x%" PRIx64 " try to close connection, numOfReq:%d", *(int64_t*)pTscObj->id, pTscObj->numOfReqs);
taosRemoveRef(clientConnRefPool, *(int64_t*)pTscObj->id);
}
void taos_close(TAOS *taos) {
if (taos == NULL) {
return;
}
STscObj* pObj = acquireTscObj(*(int64_t*)taos);
if (NULL == pObj) {
return;
}
taos_close_internal(pObj);
releaseTscObj(*(int64_t*)taos);
taosMemoryFree(taos);
}
int taos_errno(TAOS_RES *tres) {
if (tres == NULL) {
return terrno;
}
if (TD_RES_TMQ(tres)) {
return 0;
}
return ((SRequestObj *)tres)->code;
}
const char *taos_errstr(TAOS_RES *res) {
if (res == NULL) {
return (const char *)tstrerror(terrno);
}
if (TD_RES_TMQ(res)) {
return "success";
}
SRequestObj *pRequest = (SRequestObj *)res;
if (NULL != pRequest->msgBuf && (strlen(pRequest->msgBuf) > 0 || pRequest->code == TSDB_CODE_RPC_FQDN_ERROR)) {
return pRequest->msgBuf;
} else {
return (const char *)tstrerror(pRequest->code);
}
}
void taos_free_result(TAOS_RES *res) {
if (NULL == res) {
return;
}
if (TD_RES_QUERY(res)) {
SRequestObj *pRequest = (SRequestObj *)res;
destroyRequest(pRequest);
} else if (TD_RES_TMQ(res)) {
SMqRspObj *pRsp = (SMqRspObj *)res;
if (pRsp->rsp.blockData) taosArrayDestroyP(pRsp->rsp.blockData, taosMemoryFree);
if (pRsp->rsp.blockDataLen) taosArrayDestroy(pRsp->rsp.blockDataLen);
if (pRsp->rsp.blockTags) taosArrayDestroy(pRsp->rsp.blockTags);
if (pRsp->rsp.blockTagSchema) taosArrayDestroy(pRsp->rsp.blockTagSchema);
if (pRsp->rsp.withTbName) taosArrayDestroyP(pRsp->rsp.blockTbName, taosMemoryFree);
if (pRsp->rsp.withSchema) taosArrayDestroyP(pRsp->rsp.blockSchema, (FDelete)tDeleteSSchemaWrapper);
pRsp->resInfo.pRspMsg = NULL;
doFreeReqResultInfo(&pRsp->resInfo);
}
}
int taos_field_count(TAOS_RES *res) {
if (res == NULL) {
return 0;
}
SReqResultInfo *pResInfo = tscGetCurResInfo(res);
return pResInfo->numOfCols;
}
int taos_num_fields(TAOS_RES *res) { return taos_field_count(res); }
TAOS_FIELD *taos_fetch_fields(TAOS_RES *res) {
if (taos_num_fields(res) == 0) {
return NULL;
}
SReqResultInfo *pResInfo = tscGetCurResInfo(res);
return pResInfo->userFields;
}
static void syncQueryFn(void *param, void *res, int32_t code) {
SSyncQueryParam *pParam = param;
pParam->pRequest = res;
pParam->pRequest->code = code;
tsem_post(&pParam->sem);
}
TAOS_RES *taos_query(TAOS *taos, const char *sql) {
if (NULL == taos) {
terrno = TSDB_CODE_TSC_DISCONNECTED;
return NULL;
}
STscObj* pTscObj = acquireTscObj(*(int64_t*)taos);
if (pTscObj == NULL || sql == NULL) {
terrno = TSDB_CODE_TSC_DISCONNECTED;
return NULL;
}
#if SYNC_ON_TOP_OF_ASYNC
SSyncQueryParam *param = taosMemoryCalloc(1, sizeof(SSyncQueryParam));
tsem_init(&param->sem, 0, 0);
taos_query_a(taos, sql, syncQueryFn, param);
tsem_wait(&param->sem);
releaseTscObj(*(int64_t*)taos);
return param->pRequest;
#else
size_t sqlLen = strlen(sql);
if (sqlLen > (size_t)TSDB_MAX_ALLOWED_SQL_LEN) {
releaseTscObj(*(int64_t*)taos);
tscError("sql string exceeds max length:%d", TSDB_MAX_ALLOWED_SQL_LEN);
terrno = TSDB_CODE_TSC_EXCEED_SQL_LIMIT;
return NULL;
}
TAOS_RES* pRes = execQuery(pTscObj, sql, sqlLen);
releaseTscObj(*(int64_t*)taos);
return pRes;
#endif
}
TAOS_ROW taos_fetch_row(TAOS_RES *res) {
if (res == NULL) {
return NULL;
}
if (TD_RES_QUERY(res)) {
SRequestObj *pRequest = (SRequestObj *)res;
if (pRequest->type == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pRequest->type == TSDB_SQL_INSERT ||
pRequest->code != TSDB_CODE_SUCCESS || taos_num_fields(res) == 0 || pRequest->killed) {
return NULL;
}
#if SYNC_ON_TOP_OF_ASYNC
return doAsyncFetchRows(pRequest, true, true);
#else
return doFetchRows(pRequest, true, true);
#endif
} else if (TD_RES_TMQ(res)) {
SMqRspObj *msg = ((SMqRspObj *)res);
SReqResultInfo *pResultInfo;
if (msg->resIter == -1) {
pResultInfo = tmqGetNextResInfo(res, true);
} else {
pResultInfo = tmqGetCurResInfo(res);
}
if (pResultInfo->current < pResultInfo->numOfRows) {
doSetOneRowPtr(pResultInfo);
pResultInfo->current += 1;
return pResultInfo->row;
} else {
pResultInfo = tmqGetNextResInfo(res, true);
if (pResultInfo == NULL) return NULL;
doSetOneRowPtr(pResultInfo);
pResultInfo->current += 1;
return pResultInfo->row;
}
} else {
// assert to avoid un-initialization error
ASSERT(0);
}
return NULL;
}
int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields) {
int32_t len = 0;
for (int i = 0; i < num_fields; ++i) {
if (i > 0) {
str[len++] = ' ';
}
if (row[i] == NULL) {
len += sprintf(str + len, "%s", TSDB_DATA_NULL_STR);
continue;
}
switch (fields[i].type) {
case TSDB_DATA_TYPE_TINYINT:
len += sprintf(str + len, "%d", *((int8_t *)row[i]));
break;
case TSDB_DATA_TYPE_UTINYINT:
len += sprintf(str + len, "%u", *((uint8_t *)row[i]));
break;
case TSDB_DATA_TYPE_SMALLINT:
len += sprintf(str + len, "%d", *((int16_t *)row[i]));
break;
case TSDB_DATA_TYPE_USMALLINT:
len += sprintf(str + len, "%u", *((uint16_t *)row[i]));
break;
case TSDB_DATA_TYPE_INT:
len += sprintf(str + len, "%d", *((int32_t *)row[i]));
break;
case TSDB_DATA_TYPE_UINT:
len += sprintf(str + len, "%u", *((uint32_t *)row[i]));
break;
case TSDB_DATA_TYPE_BIGINT:
len += sprintf(str + len, "%" PRId64, *((int64_t *)row[i]));
break;
case TSDB_DATA_TYPE_UBIGINT:
len += sprintf(str + len, "%" PRIu64, *((uint64_t *)row[i]));
break;
case TSDB_DATA_TYPE_FLOAT: {
float fv = 0;
fv = GET_FLOAT_VAL(row[i]);
len += sprintf(str + len, "%f", fv);
} break;
case TSDB_DATA_TYPE_DOUBLE: {
double dv = 0;
dv = GET_DOUBLE_VAL(row[i]);
len += sprintf(str + len, "%lf", dv);
} break;
case TSDB_DATA_TYPE_BINARY:
case TSDB_DATA_TYPE_NCHAR: {
int32_t charLen = varDataLen((char *)row[i] - VARSTR_HEADER_SIZE);
if (fields[i].type == TSDB_DATA_TYPE_BINARY) {
assert(charLen <= fields[i].bytes && charLen >= 0);
} else {
assert(charLen <= fields[i].bytes * TSDB_NCHAR_SIZE && charLen >= 0);
}
memcpy(str + len, row[i], charLen);
len += charLen;
} break;
case TSDB_DATA_TYPE_TIMESTAMP:
len += sprintf(str + len, "%" PRId64, *((int64_t *)row[i]));
break;
case TSDB_DATA_TYPE_BOOL:
len += sprintf(str + len, "%d", *((int8_t *)row[i]));
default:
break;
}
}
str[len] = 0;
return len;
}
int *taos_fetch_lengths(TAOS_RES *res) {
if (res == NULL) {
return NULL;
}
SReqResultInfo *pResInfo = tscGetCurResInfo(res);
return pResInfo->length;
}
TAOS_ROW *taos_result_block(TAOS_RES *res) {
if (res == NULL) {
terrno = TSDB_CODE_INVALID_PARA;
return NULL;
}
if (taos_is_update_query(res)) {
return NULL;
}
SReqResultInfo *pResInfo = tscGetCurResInfo(res);
return &pResInfo->row;
}
// todo intergrate with tDataTypes
const char *taos_data_type(int type) {
switch (type) {
case TSDB_DATA_TYPE_NULL:
return "TSDB_DATA_TYPE_NULL";
case TSDB_DATA_TYPE_BOOL:
return "TSDB_DATA_TYPE_BOOL";
case TSDB_DATA_TYPE_TINYINT:
return "TSDB_DATA_TYPE_TINYINT";
case TSDB_DATA_TYPE_SMALLINT:
return "TSDB_DATA_TYPE_SMALLINT";
case TSDB_DATA_TYPE_INT:
return "TSDB_DATA_TYPE_INT";
case TSDB_DATA_TYPE_BIGINT:
return "TSDB_DATA_TYPE_BIGINT";
case TSDB_DATA_TYPE_FLOAT:
return "TSDB_DATA_TYPE_FLOAT";
case TSDB_DATA_TYPE_DOUBLE:
return "TSDB_DATA_TYPE_DOUBLE";
case TSDB_DATA_TYPE_VARCHAR:
return "TSDB_DATA_TYPE_VARCHAR";
// case TSDB_DATA_TYPE_BINARY: return "TSDB_DATA_TYPE_VARCHAR";
case TSDB_DATA_TYPE_TIMESTAMP:
return "TSDB_DATA_TYPE_TIMESTAMP";
case TSDB_DATA_TYPE_NCHAR:
return "TSDB_DATA_TYPE_NCHAR";
case TSDB_DATA_TYPE_JSON:
return "TSDB_DATA_TYPE_JSON";
default:
return "UNKNOWN";
}
}
const char *taos_get_client_info() { return version; }
int taos_affected_rows(TAOS_RES *res) {
if (res == NULL || TD_RES_TMQ(res)) {
return 0;
}
SRequestObj *pRequest = (SRequestObj *)res;
SReqResultInfo *pResInfo = &pRequest->body.resInfo;
return pResInfo->numOfRows;
}
int taos_result_precision(TAOS_RES *res) {
if (res == NULL) {
return TSDB_TIME_PRECISION_MILLI;
}
if (TD_RES_QUERY(res)) {
SRequestObj *pRequest = (SRequestObj *)res;
return pRequest->body.resInfo.precision;
} else if (TD_RES_TMQ(res)) {
SReqResultInfo *info = tmqGetCurResInfo(res);
return info->precision;
}
return TSDB_TIME_PRECISION_MILLI;
}
int taos_select_db(TAOS *taos, const char *db) {
STscObj* pObj = acquireTscObj(*(int64_t*)taos);
if (pObj == NULL) {
releaseTscObj(*(int64_t*)taos);
terrno = TSDB_CODE_TSC_DISCONNECTED;
return TSDB_CODE_TSC_DISCONNECTED;
}
if (db == NULL || strlen(db) == 0) {
releaseTscObj(*(int64_t*)taos);
terrno = TSDB_CODE_TSC_INVALID_INPUT;
return terrno;
}
char sql[256] = {0};
snprintf(sql, tListLen(sql), "use %s", db);
TAOS_RES *pRequest = taos_query(taos, sql);
int32_t code = taos_errno(pRequest);
taos_free_result(pRequest);
releaseTscObj(*(int64_t*)taos);
return code;
}
void taos_stop_query(TAOS_RES *res) {
if (res == NULL) {
return;
}
SRequestObj *pRequest = (SRequestObj *)res;
pRequest->killed = true;
int32_t numOfFields = taos_num_fields(pRequest);
// It is not a query, no need to stop.
if (numOfFields == 0) {
tscDebug("request %" PRIx64 " no need to be killed since not query", pRequest->requestId);
return;
}
if (pRequest->body.queryJob) {
schedulerFreeJob(pRequest->body.queryJob, TSDB_CODE_TSC_QUERY_KILLED);
}
tscDebug("request %" PRIx64 " killed", pRequest->requestId);
}
bool taos_is_null(TAOS_RES *res, int32_t row, int32_t col) {
SReqResultInfo *pResultInfo = tscGetCurResInfo(res);
if (col >= pResultInfo->numOfCols || col < 0 || row >= pResultInfo->numOfRows || row < 0) {
return true;
}
SResultColumn *pCol = &pResultInfo->pCol[col];
if (IS_VAR_DATA_TYPE(pResultInfo->fields[col].type)) {
return (pCol->offset[row] == -1);
} else {
return colDataIsNull_f(pCol->nullbitmap, row);
}
}
bool taos_is_update_query(TAOS_RES *res) { return taos_num_fields(res) == 0; }
int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows) {
int32_t numOfRows = 0;
/*int32_t code = */ taos_fetch_block_s(res, &numOfRows, rows);
return numOfRows;
}
int taos_fetch_block_s(TAOS_RES *res, int *numOfRows, TAOS_ROW *rows) {
if (res == NULL) {
return 0;
}
if (TD_RES_QUERY(res)) {
SRequestObj *pRequest = (SRequestObj *)res;
(*rows) = NULL;
(*numOfRows) = 0;
if (pRequest->type == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pRequest->type == TSDB_SQL_INSERT ||
pRequest->code != TSDB_CODE_SUCCESS || taos_num_fields(res) == 0) {
return 0;
}
#if SYNC_ON_TOP_OF_ASYNC
doAsyncFetchRows(pRequest, false, true);
#else
doFetchRows(pRequest, true, true);
#endif
// TODO refactor
SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
pResultInfo->current = pResultInfo->numOfRows;
(*rows) = pResultInfo->row;
(*numOfRows) = pResultInfo->numOfRows;
return pRequest->code;
} else if (TD_RES_TMQ(res)) {
SReqResultInfo *pResultInfo = tmqGetNextResInfo(res, true);
if (pResultInfo == NULL) return -1;
pResultInfo->current = pResultInfo->numOfRows;
(*rows) = pResultInfo->row;
(*numOfRows) = pResultInfo->numOfRows;
return 0;
} else {
ASSERT(0);
return -1;
}
}
int taos_fetch_raw_block(TAOS_RES *res, int *numOfRows, void **pData) {
if (res == NULL) {
return 0;
}
if (TD_RES_TMQ(res)) {
SReqResultInfo *pResultInfo = tmqGetNextResInfo(res, false);
if (pResultInfo == NULL) {
(*numOfRows) = 0;
return 0;
}
pResultInfo->current = pResultInfo->numOfRows;
(*numOfRows) = pResultInfo->numOfRows;
(*pData) = (void *)pResultInfo->pData;
return 0;
}
SRequestObj *pRequest = (SRequestObj *)res;
if (pRequest->type == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pRequest->type == TSDB_SQL_INSERT ||
pRequest->code != TSDB_CODE_SUCCESS || taos_num_fields(res) == 0) {
return 0;
}
#if SYNC_ON_TOP_OF_ASYNC
doAsyncFetchRows(pRequest, false, false);
#else
doFetchRows(pRequest, false, false);
#endif
SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
pResultInfo->current = pResultInfo->numOfRows;
(*numOfRows) = pResultInfo->numOfRows;
(*pData) = (void *)pResultInfo->pData;
return 0;
}
int *taos_get_column_data_offset(TAOS_RES *res, int columnIndex) {
if (res == NULL) {
return 0;
}
int32_t numOfFields = taos_num_fields(res);
if (columnIndex < 0 || columnIndex >= numOfFields || numOfFields == 0) {
return 0;
}
SReqResultInfo *pResInfo = tscGetCurResInfo(res);
TAOS_FIELD *pField = &pResInfo->userFields[columnIndex];
if (!IS_VAR_DATA_TYPE(pField->type)) {
return 0;
}
return pResInfo->pCol[columnIndex].offset;
}
int taos_validate_sql(TAOS *taos, const char *sql) { return true; }
void taos_reset_current_db(TAOS *taos) {
STscObj* pTscObj = acquireTscObj(*(int64_t*)taos);
if (pTscObj == NULL) {
terrno = TSDB_CODE_TSC_DISCONNECTED;
return;
}
resetConnectDB(pTscObj);
releaseTscObj(*(int64_t*)taos);
}
const char *taos_get_server_info(TAOS *taos) {
STscObj* pTscObj = acquireTscObj(*(int64_t*)taos);
if (pTscObj == NULL) {
terrno = TSDB_CODE_TSC_DISCONNECTED;
return NULL;
}
releaseTscObj(*(int64_t*)taos);
return pTscObj->ver;
}
typedef struct SqlParseWrapper {
SParseContext *pCtx;
SCatalogReq catalogReq;
SRequestObj *pRequest;
SQuery *pQuery;
} SqlParseWrapper;
static void destorySqlParseWrapper(SqlParseWrapper *pWrapper) {
taosArrayDestroy(pWrapper->catalogReq.pDbVgroup);
taosArrayDestroy(pWrapper->catalogReq.pDbCfg);
taosArrayDestroy(pWrapper->catalogReq.pDbInfo);
taosArrayDestroy(pWrapper->catalogReq.pTableMeta);
taosArrayDestroy(pWrapper->catalogReq.pTableHash);
taosArrayDestroy(pWrapper->catalogReq.pUdf);
taosArrayDestroy(pWrapper->catalogReq.pIndex);
taosArrayDestroy(pWrapper->catalogReq.pUser);
taosArrayDestroy(pWrapper->catalogReq.pTableIndex);
taosMemoryFree(pWrapper->pCtx);
taosMemoryFree(pWrapper);
}
void retrieveMetaCallback(SMetaData *pResultMeta, void *param, int32_t code) {
tscDebug("enter meta callback, code %s", tstrerror(code));
SqlParseWrapper *pWrapper = (SqlParseWrapper *)param;
SQuery *pQuery = pWrapper->pQuery;
SRequestObj *pRequest = pWrapper->pRequest;
if (code == TSDB_CODE_SUCCESS) {
code = qAnalyseSqlSemantic(pWrapper->pCtx, &pWrapper->catalogReq, pResultMeta, pQuery);
pRequest->stableQuery = pQuery->stableQuery;
}
if (code == TSDB_CODE_SUCCESS) {
if (pQuery->haveResultSet) {
setResSchemaInfo(&pRequest->body.resInfo, pQuery->pResSchema, pQuery->numOfResCols);
setResPrecision(&pRequest->body.resInfo, pQuery->precision);
}
TSWAP(pRequest->dbList, (pQuery)->pDbList);
TSWAP(pRequest->tableList, (pQuery)->pTableList);
destorySqlParseWrapper(pWrapper);
launchAsyncQuery(pRequest, pQuery);
} else {
destorySqlParseWrapper(pWrapper);
tscDebug("error happens, code:%d", code);
if (NEED_CLIENT_HANDLE_ERROR(code)) {
tscDebug("0x%" PRIx64 " client retry to handle the error, code:%d - %s, tryCount:%d, reqId:0x%" PRIx64,
pRequest->self, code, tstrerror(code), pRequest->retry, pRequest->requestId);
pRequest->prevCode = code;
doAsyncQuery(pRequest, true);
return;
}
// return to app directly
tscError("0x%" PRIx64 " error occurs, code:%s, return to user app, reqId:0x%" PRIx64, pRequest->self,
tstrerror(code), pRequest->requestId);
pRequest->code = code;
pRequest->body.queryFp(pRequest->body.param, pRequest, code);
}
}
void taos_query_a(TAOS *taos, const char *sql, __taos_async_fn_t fp, void *param) {
STscObj* pTscObj = acquireTscObj(*(int64_t*)taos);
if (pTscObj == NULL || sql == NULL || NULL == fp) {
terrno = TSDB_CODE_INVALID_PARA;
if (pTscObj) {
releaseTscObj(*(int64_t*)taos);
} else {
terrno = TSDB_CODE_TSC_DISCONNECTED;
}
fp(param, NULL, terrno);
return;
}
size_t sqlLen = strlen(sql);
if (sqlLen > (size_t)TSDB_MAX_ALLOWED_SQL_LEN) {
tscError("sql string exceeds max length:%d", TSDB_MAX_ALLOWED_SQL_LEN);
terrno = TSDB_CODE_TSC_EXCEED_SQL_LIMIT;
fp(param, NULL, terrno);
return;
}
SRequestObj *pRequest = NULL;
int32_t code = buildRequest(pTscObj, sql, sqlLen, &pRequest);
if (code != TSDB_CODE_SUCCESS) {
terrno = code;
fp(param, NULL, terrno);
return;
}
pRequest->body.queryFp = fp;
pRequest->body.param = param;
doAsyncQuery(pRequest, false);
}
int32_t createParseContext(const SRequestObj *pRequest, SParseContext **pCxt) {
const STscObj *pTscObj = pRequest->pTscObj;
*pCxt = taosMemoryCalloc(1, sizeof(SParseContext));
if (*pCxt == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
**pCxt = (SParseContext){
.requestId = pRequest->requestId,
.requestRid = pRequest->self,
.acctId = pTscObj->acctId,
.db = pRequest->pDb,
.topicQuery = false,
.pSql = pRequest->sqlstr,
.sqlLen = pRequest->sqlLen,
.pMsg = pRequest->msgBuf,
.msgLen = ERROR_MSG_BUF_DEFAULT_SIZE,
.pTransporter = pTscObj->pAppInfo->pTransporter,
.pStmtCb = NULL,
.pUser = pTscObj->user,
.schemalessType = pTscObj->schemalessType,
.isSuperUser = (0 == strcmp(pTscObj->user, TSDB_DEFAULT_USER)),
.async = true,
};
return TSDB_CODE_SUCCESS;
}
void doAsyncQuery(SRequestObj *pRequest, bool updateMetaForce) {
SParseContext *pCxt = NULL;
STscObj *pTscObj = pRequest->pTscObj;
int32_t code = 0;
if (pRequest->retry++ > REQUEST_TOTAL_EXEC_TIMES) {
code = pRequest->prevCode;
goto _error;
}
code = createParseContext(pRequest, &pCxt);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
pCxt->mgmtEpSet = getEpSet_s(&pTscObj->pAppInfo->mgmtEp);
code = catalogGetHandle(pTscObj->pAppInfo->clusterId, &pCxt->pCatalog);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
SQuery *pQuery = NULL;
SCatalogReq catalogReq = {.forceUpdate = updateMetaForce};
code = qParseSqlSyntax(pCxt, &pQuery, &catalogReq);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
SqlParseWrapper *pWrapper = taosMemoryCalloc(1, sizeof(SqlParseWrapper));
if (pWrapper == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _error;
}
pWrapper->pCtx = pCxt;
pWrapper->pQuery = pQuery;
pWrapper->pRequest = pRequest;
pWrapper->catalogReq = catalogReq;
SRequestConnInfo conn = {.pTrans = pCxt->pTransporter,
.requestId = pCxt->requestId,
.requestObjRefId = pCxt->requestRid,
.mgmtEps = pCxt->mgmtEpSet};
code = catalogAsyncGetAllMeta(pCxt->pCatalog, &conn, pRequest->requestId, &catalogReq, retrieveMetaCallback, pWrapper,
&pRequest->body.queryJob);
if (code == TSDB_CODE_SUCCESS) {
return;
}
_error:
tscError("0x%" PRIx64 " error happens, code:%d - %s, reqId:0x%" PRIx64, pRequest->self, code, tstrerror(code),
pRequest->requestId);
terrno = code;
pRequest->code = code;
pRequest->body.queryFp(pRequest->body.param, pRequest, code);
}
static void fetchCallback(void *pResult, void *param, int32_t code) {
SRequestObj *pRequest = (SRequestObj *)param;
SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
tscDebug("0x%" PRIx64 " enter scheduler fetch cb, code:%d - %s, reqId:0x%" PRIx64,
pRequest->self, code, tstrerror(code), pRequest->requestId);
pResultInfo->pData = pResult;
pResultInfo->numOfRows = 0;
if (code != TSDB_CODE_SUCCESS) {
pRequest->code = code;
pRequest->body.fetchFp(pRequest->body.param, pRequest, 0);
return;
}
if (pRequest->code != TSDB_CODE_SUCCESS) {
pRequest->body.fetchFp(pRequest->body.param, pRequest, 0);
return;
}
pRequest->code =
setQueryResultFromRsp(pResultInfo, (SRetrieveTableRsp *)pResultInfo->pData, pResultInfo->convertUcs4, false);
if (pRequest->code != TSDB_CODE_SUCCESS) {
pResultInfo->numOfRows = 0;
pRequest->code = code;
tscError("0x%" PRIx64 " fetch results failed, code:%s, reqId:0x%" PRIx64, pRequest->self, tstrerror(code),
pRequest->requestId);
} else {
tscDebug("0x%" PRIx64 " fetch results, numOfRows:%d total Rows:%" PRId64 ", complete:%d, reqId:0x%" PRIx64,
pRequest->self, pResultInfo->numOfRows, pResultInfo->totalRows, pResultInfo->completed,
pRequest->requestId);
}
pRequest->body.fetchFp(pRequest->body.param, pRequest, pResultInfo->numOfRows);
}
void taos_fetch_rows_a(TAOS_RES *res, __taos_async_fn_t fp, void *param) {
ASSERT(res != NULL && fp != NULL);
SRequestObj *pRequest = res;
pRequest->body.fetchFp = fp;
SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
if (taos_num_fields(pRequest) == 0) {
pResultInfo->numOfRows = 0;
pRequest->body.fetchFp(param, pRequest, pResultInfo->numOfRows);
return;
}
if (pResultInfo->pData == NULL || pResultInfo->current >= pResultInfo->numOfRows) {
// All data has returned to App already, no need to try again
if (pResultInfo->completed) {
pResultInfo->numOfRows = 0;
pRequest->body.fetchFp(param, pRequest, pResultInfo->numOfRows);
return;
}
}
schedulerAsyncFetchRows(pRequest->body.queryJob, fetchCallback, pRequest);
}
void taos_fetch_raw_block_a(TAOS_RES *res, __taos_async_fn_t fp, void *param) {
ASSERT(res != NULL && fp != NULL);
SRequestObj *pRequest = res;
pRequest->body.resInfo.convertUcs4 = false;
SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
// set the current block is all consumed
pResultInfo->current = pResultInfo->numOfRows;
taos_fetch_rows_a(res, fp, param);
}
const void *taos_get_raw_block(TAOS_RES *res) {
ASSERT(res != NULL);
SRequestObj *pRequest = res;
return pRequest->body.resInfo.pData;
}
TAOS_SUB *taos_subscribe(TAOS *taos, int restart, const char *topic, const char *sql, TAOS_SUBSCRIBE_CALLBACK fp,
void *param, int interval) {
// TODO
return NULL;
}
TAOS_RES *taos_consume(TAOS_SUB *tsub) {
// TODO
return NULL;
}
void taos_unsubscribe(TAOS_SUB *tsub, int keepProgress) {
// TODO
}
int taos_load_table_info(TAOS *taos, const char *tableNameList) {
// TODO
return -1;
}
TAOS_STMT *taos_stmt_init(TAOS *taos) {
STscObj* pObj = acquireTscObj(*(int64_t*)taos);
if (NULL == pObj) {
tscError("invalid parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_TSC_DISCONNECTED;
return NULL;
}
TAOS_STMT* pStmt = stmtInit(pObj);
releaseTscObj(*(int64_t*)taos);
return pStmt;
}
int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length) {
if (stmt == NULL || sql == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtPrepare(stmt, sql, length);
}
int taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_MULTI_BIND *tags) {
if (stmt == NULL || name == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
int32_t code = stmtSetTbName(stmt, name);
if (code) {
return code;
}
if (tags) {
return stmtSetTbTags(stmt, tags);
}
return TSDB_CODE_SUCCESS;
}
int taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name) {
if (stmt == NULL || name == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtSetTbName(stmt, name);
}
int taos_stmt_set_tags(TAOS_STMT *stmt, TAOS_MULTI_BIND *tags) {
if (stmt == NULL || tags == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtSetTbTags(stmt, tags);
}
int taos_stmt_set_sub_tbname(TAOS_STMT *stmt, const char *name) { return taos_stmt_set_tbname(stmt, name); }
int taos_stmt_get_tag_fields(TAOS_STMT *stmt, int *fieldNum, TAOS_FIELD_E **fields) {
if (stmt == NULL || NULL == fieldNum) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtGetTagFields(stmt, fieldNum, fields);
}
int taos_stmt_get_col_fields(TAOS_STMT *stmt, int *fieldNum, TAOS_FIELD_E **fields) {
if (stmt == NULL || NULL == fieldNum) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtGetColFields(stmt, fieldNum, fields);
}
int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind) {
if (stmt == NULL || bind == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
if (bind->num > 1) {
tscError("invalid bind number %d for %s", bind->num, __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtBindBatch(stmt, bind, -1);
}
int taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind) {
if (stmt == NULL || bind == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
if (bind->num <= 0 || bind->num > INT16_MAX) {
tscError("invalid bind num %d", bind->num);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
int32_t insert = 0;
stmtIsInsert(stmt, &insert);
if (0 == insert && bind->num > 1) {
tscError("only one row data allowed for query");
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtBindBatch(stmt, bind, -1);
}
int taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind, int colIdx) {
if (stmt == NULL || bind == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
if (colIdx < 0) {
tscError("invalid bind column idx %d", colIdx);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
int32_t insert = 0;
stmtIsInsert(stmt, &insert);
if (0 == insert && bind->num > 1) {
tscError("only one row data allowed for query");
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtBindBatch(stmt, bind, colIdx);
}
int taos_stmt_add_batch(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtAddBatch(stmt);
}
int taos_stmt_execute(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtExec(stmt);
}
int taos_stmt_is_insert(TAOS_STMT *stmt, int *insert) {
if (stmt == NULL || insert == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtIsInsert(stmt, insert);
}
int taos_stmt_num_params(TAOS_STMT *stmt, int *nums) {
if (stmt == NULL || nums == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtGetParamNum(stmt, nums);
}
int taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes) {
if (stmt == NULL || type == NULL || NULL == bytes || idx < 0) {
tscError("invalid parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtGetParam(stmt, idx, type, bytes);
}
TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return NULL;
}
return stmtUseResult(stmt);
}
char *taos_stmt_errstr(TAOS_STMT *stmt) { return (char *)stmtErrstr(stmt); }
int taos_stmt_affected_rows(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return 0;
}
return stmtAffectedRows(stmt);
}
int taos_stmt_affected_rows_once(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return 0;
}
return stmtAffectedRowsOnce(stmt);
}
int taos_stmt_close(TAOS_STMT *stmt) {
if (stmt == NULL) {
tscError("NULL parameter for %s", __FUNCTION__);
terrno = TSDB_CODE_INVALID_PARA;
return terrno;
}
return stmtClose(stmt);
}
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