Python + Jmeter 实现自动化性能压测

Step01: Python脚本开发

文件路径：D://wl//testproject//Fone-grpc//project1//test_client.py

Python 脚本作用：

通过 grpc 调用底层 c++ 的接口，做数据库的数据插入与查询操作，然后将返回的结果进行拼接与输出。

2.代码里面将每一次调用后返回的内容进行拼接后，并做了成功信息的统计，输出成功的次数为3，输出后会转给 jmeter 里面的脚本获取。

python 复制代码

from __future__ import print_function
import logging
import sys
import grpc
import Storage_pb2      # Storage_pb2.py which contains our generated request and response classes
import StorageService_pb2_grpc # StorageService_pb2_grpc.py which contains our generated client and server classes.

host="10.10.1.117:50066"

def run():
    result=""
    with grpc.insecure_channel(host) as channel:
        resp0=StorageService_pb2_grpc.FOneStorageStub(channel).InsertKVS(Storage_pb2.PUpsertKVS(
            DBName="MergeLog",TableName="MergeLog",KeyValues=[{"Key":b'',"Key":b''}],Upsert=True,Transaction=True
        ))
        result+=str(resp0)

    with grpc.insecure_channel(host) as channel:
        stud1=StorageService_pb2_grpc.FOneStorageStub(channel)
        resp1=stud1.InsertV(Storage_pb2.PInsertV(DBName="MergeLog", TableName="MergeLog", Value=b"1"))
        result += str(resp1)
     
    with grpc.insecure_channel(host) as channel:
        stud2=StorageService_pb2_grpc.FOneStorageStub(channel)
        resp2=stud2.FindOne(Storage_pb2.PFindK(DBName="MergeLog", TableName="MergeLog", Key="1"))
        result += str(resp2)

    result=result.replace("\n", " ")
    result=result.count("Successful return: 0")
    print(result)


if __name__ == '__main__':
    logging.basicConfig()
    run()

PS：在本地调试好脚本，确保符合预期。

Step02: Jmeter 创建 beanshell 取样器

脚本内容如下：

python 复制代码

import java.io.BufferedReader;
import java.io.InputStreamReader;

log.info("----------------------------start to exe");
String command = "cmd /c python D://wl//testproject//Fone-grpc//project1//test_client.py"; //定义要执行的python文件路径
String var;
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(command);  //执行上面的python脚本
pr.waitFor()
BufferedReader b = new BufferedReader(new InputStreamReader(pr.getInputStream())); // 转换执行脚本后的返回响应
String line = "";
StringBuilder response = new StringBuilder();
while ((line = b.readLine()) != null) {
     response.append(line);
} 
String response_data = response.toString();
log.info(response_data);
if(response_data.equals("3")){ // 判断响应的内容是否有3次，如果不是3次就表示执行失败了
 log.info("---------------------------success end exe");
}else{
 log.error("--------------------------failed end exe"); //这里的输出一次会记录一次失败次数
}
b.close();

Step03: 执行效果

通过 jmeter 工具进行并发操作，对后端底层接口进行压力测试，效果不错，效果图如下所示。

Step04: Jmeter日志输出

python 复制代码

2023-02-22 17:26:08,539 INFO o.a.j.t.JMeterThread: Stopping because end time detected by thread: 线程组--python 1-33
2023-02-22 17:26:08,539 INFO o.a.j.t.JMeterThread: Thread finished: 线程组--python 1-33
2023-02-22 17:26:08,597 INFO o.a.j.u.BeanShellTestElement: 3
2023-02-22 17:26:08,597 INFO o.a.j.u.BeanShellTestElement: ---------------------------success end exe
2023-02-22 17:26:08,598 INFO o.a.j.t.JMeterThread: Stopping because end time detected by thread: 线程组--python 1-82
2023-02-22 17:26:08,598 INFO o.a.j.t.JMeterThread: Thread finished: 线程组--python 1-82
2023-02-22 17:26:08,608 INFO o.a.j.u.BeanShellTestElement: 2
2023-02-22 17:26:08,608 ERROR o.a.j.u.BeanShellTestElement: --------------------------failed end exe

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