Question

我是k6的新手，而对JS则是新手。我正在尝试从DB中的列导出的平面文件中读取列表。我想打开此文件并遍历整个列表，并将每个项目附加为HTTP调用的查询参数。我不知道如何进行。

例如，如果这是我的文件，

employees.txt

ExecutionPhase.BEFORE_TEST_METHOD

＆这是我的k6脚本（ perf-employee.js ）

任何关于前进方向的指导将不胜感激。

Answer 1

open() returns一个简单的字符串（如果使用b标志，则为二进制），因此您可以通过将其转换为数组来解析它（每一行都是自己的）数组行）和JavaScript String.split()方法。或者，如果您想读取更复杂的数据文件，请使用JSON和JSON.parse()方法将其直接转换为JavaScript对象-请查看上面链接中的第一个示例。

然后使用k6的execution context variables，您可以执行以下操作：

import http from "k6/http";
import { sleep } from "k6";

var data = open("./employees.txt").split(/\r?\n/);

export let options = {
    vus: 3,
    duration: "5s"
};


export default function () {
    var employee = data[__ITER % data.length];
    console.log(`VU ${__VU} on iteration ${__ITER} has employee ID ${employee}...`)
    http.get(`http://www.example.com/employee?employee_num=${employee}`);
    sleep(1);
};

您应该在脚本输出中看到以下内容：

INFO[0001] VU 2 on iteration 0 has employee ID 01111... 
INFO[0001] VU 1 on iteration 0 has employee ID 01111... 
INFO[0001] VU 3 on iteration 0 has employee ID 01111... 
INFO[0002] VU 2 on iteration 1 has employee ID 02222... 
INFO[0002] VU 1 on iteration 1 has employee ID 02222... 
INFO[0002] VU 3 on iteration 1 has employee ID 02222... 
INFO[0003] VU 2 on iteration 2 has employee ID 06666... 
INFO[0003] VU 3 on iteration 2 has employee ID 06666... 
INFO[0003] VU 1 on iteration 2 has employee ID 06666... 
INFO[0004] VU 2 on iteration 3 has employee ID 04444... 
INFO[0004] VU 1 on iteration 3 has employee ID 04444... 
INFO[0004] VU 3 on iteration 3 has employee ID 04444... 
INFO[0005] VU 2 on iteration 4 has employee ID 09999... 
INFO[0005] VU 1 on iteration 4 has employee ID 09999... 
INFO[0005] VU 3 on iteration 4 has employee ID 09999...

k6脚本：如何解析要在HTTP查询中使用的文件信息

1 个答案: