homework-jianmu/src/inc/taos.h

139 lines
5.0 KiB
C

/*
* 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/>.
*/
#ifndef TDENGINE_TAOS_H
#define TDENGINE_TAOS_H
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef void TAOS;
typedef void** TAOS_ROW;
typedef void TAOS_RES;
typedef void TAOS_SUB;
typedef void TAOS_STREAM;
typedef void TAOS_STMT;
// Data type definition
#define TSDB_DATA_TYPE_NULL 0 // 1 bytes
#define TSDB_DATA_TYPE_BOOL 1 // 1 bytes
#define TSDB_DATA_TYPE_TINYINT 2 // 1 byte
#define TSDB_DATA_TYPE_SMALLINT 3 // 2 bytes
#define TSDB_DATA_TYPE_INT 4 // 4 bytes
#define TSDB_DATA_TYPE_BIGINT 5 // 8 bytes
#define TSDB_DATA_TYPE_FLOAT 6 // 4 bytes
#define TSDB_DATA_TYPE_DOUBLE 7 // 8 bytes
#define TSDB_DATA_TYPE_BINARY 8 // string
#define TSDB_DATA_TYPE_TIMESTAMP 9 // 8 bytes
#define TSDB_DATA_TYPE_NCHAR 10 // unicode string
typedef enum {
TSDB_OPTION_LOCALE,
TSDB_OPTION_CHARSET,
TSDB_OPTION_TIMEZONE,
TSDB_OPTION_CONFIGDIR,
TSDB_OPTION_SHELL_ACTIVITY_TIMER,
TSDB_OPTION_SOCKET_TYPE,
TSDB_MAX_OPTIONS
} TSDB_OPTION;
typedef struct taosField {
char name[64];
short bytes;
uint8_t type;
} TAOS_FIELD;
#ifdef _TD_GO_DLL_
#define DLL_EXPORT __declspec(dllexport)
#else
#define DLL_EXPORT
#endif
DLL_EXPORT void taos_init();
DLL_EXPORT void taos_cleanup();
DLL_EXPORT int taos_options(TSDB_OPTION option, const void *arg, ...);
DLL_EXPORT TAOS *taos_connect(const char *ip, const char *user, const char *pass, const char *db, uint16_t port);
DLL_EXPORT void taos_close(TAOS *taos);
typedef struct TAOS_BIND {
int buffer_type;
void * buffer;
unsigned long buffer_length; // unused
unsigned long *length;
int * is_null;
int is_unsigned; // unused
int * error; // unused
} TAOS_BIND;
TAOS_STMT *taos_stmt_init(TAOS *taos);
int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length);
int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind);
int taos_stmt_add_batch(TAOS_STMT *stmt);
int taos_stmt_execute(TAOS_STMT *stmt);
TAOS_RES * taos_stmt_use_result(TAOS_STMT *stmt);
int taos_stmt_close(TAOS_STMT *stmt);
DLL_EXPORT int taos_query(TAOS *taos, const char *sql);
DLL_EXPORT TAOS_RES *taos_use_result(TAOS *taos);
DLL_EXPORT TAOS_ROW taos_fetch_row(TAOS_RES *res);
DLL_EXPORT int taos_result_precision(TAOS_RES *res); // get the time precision of result
DLL_EXPORT void taos_free_result(TAOS_RES *res);
DLL_EXPORT int taos_field_count(TAOS *taos);
DLL_EXPORT int taos_num_fields(TAOS_RES *res);
DLL_EXPORT int taos_affected_rows(TAOS *taos);
DLL_EXPORT TAOS_FIELD *taos_fetch_fields(TAOS_RES *res);
DLL_EXPORT int taos_select_db(TAOS *taos, const char *db);
DLL_EXPORT int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields);
DLL_EXPORT void taos_stop_query(TAOS_RES *res);
int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows);
int taos_validate_sql(TAOS *taos, const char *sql);
int* taos_fetch_lengths(TAOS_RES *res);
// TAOS_RES *taos_list_tables(TAOS *mysql, const char *wild);
// TAOS_RES *taos_list_dbs(TAOS *mysql, const char *wild);
// TODO: the return value should be `const`
DLL_EXPORT char *taos_get_server_info(TAOS *taos);
DLL_EXPORT char *taos_get_client_info();
DLL_EXPORT char *taos_errstr(TAOS *taos);
DLL_EXPORT int taos_errno(TAOS *taos);
DLL_EXPORT void taos_query_a(TAOS *taos, const char *sql, void (*fp)(void *param, TAOS_RES *, int code), void *param);
DLL_EXPORT void taos_fetch_rows_a(TAOS_RES *res, void (*fp)(void *param, TAOS_RES *, int numOfRows), void *param);
DLL_EXPORT void taos_fetch_row_a(TAOS_RES *res, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row), void *param);
typedef void (*TAOS_SUBSCRIBE_CALLBACK)(TAOS_SUB* tsub, TAOS_RES *res, void* param, int code);
DLL_EXPORT TAOS_SUB *taos_subscribe(TAOS* taos, int restart, const char* topic, const char *sql, TAOS_SUBSCRIBE_CALLBACK fp, void *param, int interval);
DLL_EXPORT TAOS_RES *taos_consume(TAOS_SUB *tsub);
DLL_EXPORT void taos_unsubscribe(TAOS_SUB *tsub, int keepProgress);
DLL_EXPORT TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sql, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
int64_t stime, void *param, void (*callback)(void *));
DLL_EXPORT void taos_close_stream(TAOS_STREAM *tstr);
DLL_EXPORT int taos_load_table_info(TAOS *taos, const char* tableNameList);
#ifdef __cplusplus
}
#endif
#endif