Loadrunner测试数据库性能，测试SQL语句性能的脚本例子

此代码为Loadrunner 8 通过C API类型的Vuser 测试MySQL性能，或者测试sql语句性能的脚本。

这东西很少有人用，网上资料很少，一般测试B/S的很多。

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/*需要的表结构如下 
CREATE TABLE `test_data` ( 
  `order_id` BIGINT UNSIGNED NOT NULL COMMENT 'Order numbers. Must be unique.', 
  `status` BOOL NOT NULL DEFAULT '0' COMMENT 'Whether data has been used or not. A value of 0 means FALSE.', 
  `date_used` DATETIME NULL COMMENT 'Date/time that the data was used.', 
  UNIQUE ( 
    `order_id` 
  ) 
) ENGINE = innodb COMMENT = 'LoadRunner test data'; 
*/ 
Action()  
{  
  int rc;   
  int db_connection; // 数据库连接  
  int query_result; // 查询结果集 MYSQL_RES  
  char** result_row; // 查询的数据衕  
   
  char *server = "localhost";  
  char *user = "root";  
  char *password = "123456";  
  char *database = "test";  
  int port = 3306;  
  int unix_socket = NULL;   
  int flags = 0;   
   
  // 找到libmysql.dll的所在位置.  
  rc = lr_load_dll("C://Program Files//MySQL//MySQL Server 5.1//bin//libmysql.dll");  
  if (rc != 0) {  
    lr_error_message("Could not load libmysql.dll");  
    lr_abort();  
  }  
   
  // 创建MySQL对象  
  db_connection = mysql_init(NULL);  
  if (db_connection == NULL) {  
    lr_error_message("Insufficient memory");  
    lr_abort();  
  }  
   
  // 连接到MySQL数据库  
  rc = mysql_real_connect(db_connection, server, user, password, database, port, unix_socket, flags);  
  if (rc == NULL) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
   
  // 向数据库插入数据  
  // 此处的 {ORDER_ID} 是一个参数，简单测试时可以用一个常数代替  
  lr_save_string (lr_eval_string("INSERT INTO test_data (order_id) VALUES ({ORDER_ID})"),"paramInsertQuery");   
  rc = mysql_query(db_connection, lr_eval_string("{paramInsertQuery}"));  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
   
  // 从数据库读取一个数据并显示  
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  query_result = mysql_use_result(db_connection);  
  if (query_result == NULL) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  // 如果结果集包含多行数据，需要多次调用 mysql_fetch_row 直到返回NULL  
  result_row = (char **)mysql_fetch_row(query_result);   
  if (result_row == NULL) {  
    lr_error_message("Did not expect the result set to be empty");  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  // 保存参数，用于删除这行数据  
  lr_save_string(result_row[0], "paramOrderID");  
  lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));  
  mysql_free_result(query_result);  
   
  // 在事务里更新一行数据，需要用InnoDB引擎  
  rc = mysql_query(db_connection, "BEGIN"); //启动事务  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  // 使用 "FOR UPDATE" 锁住要更新的数据行  
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1 FOR UPDATE");   
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  query_result = mysql_use_result(db_connection);  
  if (query_result == NULL) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  result_row = (char **)mysql_fetch_row(query_result);   
  if (result_row == NULL) {  
    lr_error_message("没有查询到结果");  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  lr_save_string(result_row[0], "paramOrderID");  
  lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));  
  mysql_free_result(query_result);  
  lr_save_string(lr_eval_string("UPDATE test_data SET status=TRUE, date_used=NOW() WHERE order_id='{paramOrderID}'"),"paramUpdateQuery");  
  rc = mysql_query(db_connection, lr_eval_string("{paramUpdateQuery}"));  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  rc = mysql_query(db_connection, "COMMIT"); // 提交事务  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
   
  // 再次查找数据，应该为空了，因为前面的事务更新了标志  
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  query_result = mysql_use_result(db_connection);  
  if (query_result == NULL) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
  result_row = (char **)mysql_fetch_row(query_result);  
  if (result_row == NULL) {  
    lr_output_message("Result set is empty as expected");  
    mysql_free_result(query_result);  
  } else {  
    lr_error_message("Did not expect the result set to contain any rows");  
    mysql_free_result(query_result);  
    mysql_close(db_connection);  
    lr_abort();  
  }  
   
  // 删除数据  
  lr_save_string(lr_eval_string("DELETE FROM test_data WHERE order_id = '{paramOrderID}'"),"paramDeleteQuery");  
  rc = mysql_query(db_connection, lr_eval_string("{paramDeleteQuery}"));  
  if (rc != 0) {  
    lr_error_message("%s", mysql_error(db_connection));  
    mysql_close(db_connection);  
    lr_abort();  
  }  
   
  // 释放MySQL资源  
  mysql_close(db_connection);  
    return 0;  
} 
/*需要的表结构如下
CREATE TABLE `test_data` (
  `order_id` BIGINT UNSIGNED NOT NULL COMMENT 'Order numbers. Must be unique.',
  `status` BOOL NOT NULL DEFAULT '0' COMMENT 'Whether data has been used or not. A value of 0 means FALSE.',
  `date_used` DATETIME NULL COMMENT 'Date/time that the data was used.',
  UNIQUE (
    `order_id`
  )
) ENGINE = innodb COMMENT = 'LoadRunner test data';
*/
Action()
{
  int rc;
  int db_connection; // 数据库连接
  int query_result; // 查询结果集 MYSQL_RES
  char** result_row; // 查询的数据衕
 
  char *server = "localhost";
  char *user = "root";
  char *password = "123456";
  char *database = "test";
  int port = 3306;
  int unix_socket = NULL;
  int flags = 0;
 
  // 找到libmysql.dll的所在位置.
  rc = lr_load_dll("C://Program Files//MySQL//MySQL Server 5.1//bin//libmysql.dll");
  if (rc != 0) {
    lr_error_message("Could not load libmysql.dll");
    lr_abort();
  }
 
  // 创建MySQL对象
  db_connection = mysql_init(NULL);
  if (db_connection == NULL) {
    lr_error_message("Insufficient memory");
    lr_abort();
  }
 
  // 连接到MySQL数据库
  rc = mysql_real_connect(db_connection, server, user, password, database, port, unix_socket, flags);
  if (rc == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
 
  // 向数据库插入数据
  // 此处的 {ORDER_ID} 是一个参数，简单测试时可以用一个常数代替
  lr_save_string (lr_eval_string("INSERT INTO test_data (order_id) VALUES ({ORDER_ID})"),"paramInsertQuery");
  rc = mysql_query(db_connection, lr_eval_string("{paramInsertQuery}"));
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
 
  // 从数据库读取一个数据并显示
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
  query_result = mysql_use_result(db_connection);
  if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
  // 如果结果集包含多行数据，需要多次调用 mysql_fetch_row 直到返回NULL
  result_row = (char **)mysql_fetch_row(query_result);
  if (result_row == NULL) {
    lr_error_message("Did not expect the result set to be empty");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
  // 保存参数，用于删除这行数据
  lr_save_string(result_row[0], "paramOrderID");
  lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
  mysql_free_result(query_result);
 
  // 在事务里更新一行数据，需要用InnoDB引擎
  rc = mysql_query(db_connection, "BEGIN"); //启动事务
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
  // 使用 "FOR UPDATE" 锁住要更新的数据行
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1 FOR UPDATE");
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
  query_result = mysql_use_result(db_connection);
  if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
  result_row = (char **)mysql_fetch_row(query_result);
  if (result_row == NULL) {
    lr_error_message("没有查询到结果");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
  lr_save_string(result_row[0], "paramOrderID");
  lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
  mysql_free_result(query_result);
  lr_save_string(lr_eval_string("UPDATE test_data SET status=TRUE, date_used=NOW() WHERE order_id='{paramOrderID}'"),"paramUpdateQuery");
  rc = mysql_query(db_connection, lr_eval_string("{paramUpdateQuery}"));
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
  rc = mysql_query(db_connection, "COMMIT"); // 提交事务
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
 
  // 再次查找数据，应该为空了，因为前面的事务更新了标志
  rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
  query_result = mysql_use_result(db_connection);
  if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
  result_row = (char **)mysql_fetch_row(query_result);
  if (result_row == NULL) {
    lr_output_message("Result set is empty as expected");
    mysql_free_result(query_result);
  } else {
    lr_error_message("Did not expect the result set to contain any rows");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
  }
 
  // 删除数据
  lr_save_string(lr_eval_string("DELETE FROM test_data WHERE order_id = '{paramOrderID}'"),"paramDeleteQuery");
  rc = mysql_query(db_connection, lr_eval_string("{paramDeleteQuery}"));
  if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
  }
 
  // 释放MySQL资源
  mysql_close(db_connection);
 return 0;
}

 

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