Python实现Java mybatis-plus 产生的SQL自动化测试SQL速度和判断SQL是否走索引
文件目录如下
│ sql_speed_test.py
│
├─input
│ data-report_in_visit_20240704.log
│ resource_in_sso_20240704.log
│
└─outputdata-report_in_visit_20240704.csvresource_in_sso_20240704.csv
目前每次做实验都要将Java中的SQL做性能测试，否则就没法通过考核，属实难崩。
sql_speed_test.py是我用python写的程序，将从Java mybatis-plus控制台产生的日志复制到data-report_in_visit_20240704.log和resource_in_sso_20240704.log文件中，运行程序之后output文件夹会自动输出csv文件，下面为csv文件夹详情。
data-report_in_visit_20240704.log文件
-- 301 -- [2024-07-04 14:22:55.055] [org.apache.ibatis.logging.jdbc.BaseJdbcLogger] [http-nio-9006-exec-2] [143] [DEBUG] [traceId:] ==>
SELECT resource_id AS resource_id, resource_type AS resource_type, sum(IFNULL(internal_pv, pv)) AS internal_pv, sum(IFNULL(google_pv, pv)) AS google_pv, sum(IFNULL(other_pv, pv)) AS other_pv, sum(IFNULL(pv, 0)) AS pv FROM t_bw_article_daily_statistic where resource_type = 9 GROUP BY resource_id, resource_type order by resource_id, resource_type
-- 302 -- [2024-07-04 14:22:55.055] [org.apache.ibatis.logging.jdbc.BaseJdbcLogger] [http-nio-9006-exec-2] [143] [DEBUG] [traceId:] ==>
SELECT resource_id AS resource_id, resource_type AS resource_type, sum(IFNULL(internal_pv, pv)) AS internal_pv, sum(IFNULL(google_pv, pv)) AS google_pv, sum(IFNULL(other_pv, pv)) AS other_pv, sum(IFNULL(pv, 0)) AS pv FROM t_bw_article_daily_statistic_202406 where resource_type = 9 GROUP BY resource_id, resource_type order by resource_id, resource_typedata-report_in_visit_20240704.csv文件
| 序号 | SQL功能描述 | SQL | 预估业务数据量 | 实际测试数据量 | 执行时间 | 执行结果 | 索引是否生效 | 所属项目 | 所在库 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SELECT resource_id AS resource_id, resource_type AS resource_type, sum(IFNULL(internal_pv, pv)) AS internal_pv, sum(IFNULL(google_pv, pv)) AS google_pv, sum(IFNULL(other_pv, pv)) AS other_pv, sum(IFNULL(pv, 0)) AS pv FROM t_bw_article_daily_statistic where resource_type = 9 GROUP BY resource_id, resource_type order by resource_id, resource_type | t_bw_article_daily_statistic | t_bw_article_daily_statistic:5741行 | 0.419603 秒 | 462 | 是 | data-report | visit | |
| 2 | SELECT resource_id AS resource_id, resource_type AS resource_type, sum(IFNULL(internal_pv, pv)) AS internal_pv, sum(IFNULL(google_pv, pv)) AS google_pv, sum(IFNULL(other_pv, pv)) AS other_pv, sum(IFNULL(pv, 0)) AS pv FROM t_bw_article_daily_statistic_202406 where resource_type = 9 GROUP BY resource_id, resource_type order by resource_id, resource_type | t_bw_article_daily_statistic_202406 | t_bw_article_daily_statistic_202406:296358行 | 0.291532 秒 | 2691 | 是 | data-report | visit |
sql_speed_test.py文件
import os
import csv
import re
from pymysql import *
import time"""
开发一个用于SQL性能测试的工具，避免一直做重复工作
将Java中的每一条SQL采用mybatis-plus-plugin插件抓出来转存至log文件中
抓住每条SQL做测试
"""def extract_query_sql_table_names(sql):# 正则表达式模式pattern = re.compile(r"\b(?:FROM|JOIN|INTO|UPDATE|TABLE|INTO)\s+([`\"\[\]]?[a-zA-Z_][\w$]*[`\"\[\]]?)",re.IGNORECASE)# 查找所有匹配的表名matches = pattern.findall(sql)# 去掉引号和方括号tables = [re.sub(r'[`"\[\]]', '', match) for match in matches]filter_tables = []for table in tables:if "t_bw" in table:filter_tables.append(table)return filter_tablesdef check_index_usage(connection, sql):if not sql.startswith("select") and not sql.startswith("SELECT"):return Falsetry:with connection.cursor() as cursor:# 使用 EXPLAIN 来获取查询计划explain_sql = f"EXPLAIN {sql}"cursor.execute(explain_sql)explain_result = cursor.fetchall()# 打印 EXPLAIN 结果print("EXPLAIN 结果:")for row in explain_result:print(row)# 检查每行是否使用了索引for row in explain_result:if row[5] is not None:print(f"SQL 使用了索引: {row[5]}")return Trueprint("SQL 未使用索引")return Falsefinally:pass# connection.close()def count_rows(connection, table_name):try:with connection.cursor() as cursor:# 构建 SQL 语句sql = f"SELECT COUNT(*) FROM {table_name}"# 执行 SQL 语句cursor.execute(sql)# 获取结果result = cursor.fetchone()# 返回结果return result[0]except Exception as e:print(e)finally:# connection.close()passclass SqlSpeedTest:def __init__(self):self.input_dir = "./input"self.output_dir = "./output"self.databases = {"sso": {"ip": "xxxxxx","database": "sso","username": "xxxx","password": "xxxx"}}def get_all_input_files(self):files = os.listdir(r'./input')# file_paths = []# for file in files:# file_paths.append(self.input_dir + "/" + file)return filesdef handle_sql_log(self, project, database, lines):sql_lines = []row_count = 1database_info = self.databases.get(database)conn = connect(host=database_info.get("ip"),port=3306,user=database_info.get("username"),password=database_info.get("password"),database=database_info.get("database"),charset='utf8mb4')for index, line in enumerate(lines):if line.startswith("--"):continuecurrent_sql = line.replace("\n", "")execute_info = self.execute_sql_and_get_execute_time(conn, database, current_sql)tables = extract_query_sql_table_names(current_sql)real_rows = ""for table in tables:total_rows = count_rows(conn, table)real_rows += f"{table}:{total_rows}行 "sql_line = {"row_count": row_count,"sql_description": "","sql": current_sql,"expect_rows": ",".join(tables),"real_rows": real_rows,"execute_time": execute_info["execute_time"],"execute_rows": execute_info["execute_rows"],"index_has_work": execute_info["index_has_work"],"project": project,"project": project,"database": database}sql_lines.append(sql_line)row_count += 1conn.close()return sql_linesdef execute_sql_and_get_execute_time(self, conn, database, sql):print(f"==================> {database}库正在执行SQL: {sql}")# 记录开始时间try:cs = conn.cursor() # 获取光标start_time = time.time()cs.execute(sql)rows = cs.fetchall()# 记录结束时间end_time = time.time()# 计算执行时间execution_time = end_time - start_timeconn.commit()print(f"======>{database}库共花费{execution_time:.6f}秒执行完毕,{sql}")except Exception as e:print(e)return {"execute_rows": "", "execute_time": "", "index_has_work": ""}index_has_work = check_index_usage(conn, sql)return {"execute_rows": len(rows), "execute_time": f"{execution_time:.6f} 秒","index_has_work": "是" if index_has_work else "否"}def handle_log_file(self, filename):with open(self.input_dir + "/" + filename, "r", encoding="utf-8") as file:lines = file.readlines()pre_filename = filename.split(".")[0]with open(self.output_dir + "/" + pre_filename + ".csv", "w", newline='', encoding='utf-8-sig') as f:writer = csv.writer(f, quoting=csv.QUOTE_MINIMAL)csv_title = ["序号", "SQL功能描述", "SQL", "预估业务数据量", "实际测试数据量", "执行时间", "执行结果","索引是否生效", "所属项目", "所在库"]writer.writerow(csv_title)info = pre_filename.split("_in_")project_name = info[0]database_name = info[1].split("_")[0]sql_lines = self.handle_sql_log(project_name, database_name, lines)for sql_line in sql_lines:write_line = [sql_line["row_count"],sql_line["sql_description"],sql_line["sql"],sql_line["expect_rows"],sql_line["real_rows"],sql_line["execute_time"],sql_line["execute_rows"],sql_line["index_has_work"],sql_line["project"],sql_line["database"]]writer.writerow(write_line)def do_work(self):files = self.get_all_input_files()for file in files:self.handle_log_file(file)if __name__ == '__main__':sql_speed_test = SqlSpeedTest()sql_speed_test.do_work()
写在最后
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