Postman-to-k6 PR review: AWS v4 auth

awsv4.postman_collection.json

{
	"info": {
		"_postman_id": "737b103a-8e4b-4cc9-8d12-5e38486dc5aa",
		"name": "Postman-to-k6: AWSv4",
		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
	},
	"item": [
		{
			"name": "AWSv4",
			"event": [
				{
					"listen": "test",
					"script": {
						"id": "bb870956-ada5-4bba-a805-eaacfee78f9f",
						"exec": [
							"pm.test(\"AWSv4 body matches string\", function () {",
							"    pm.expect(pm.response.text()).to.include(\"eu-north-1\");",
							"});"
						],
						"type": "text/javascript"
					}
				}
			],
			"request": {
				"auth": {
					"type": "awsv4",
					"awsv4": [
						{
							"key": "secretKey",
							"value": "{{AWS_SECRET_KEY}}",
							"type": "string"
						},
						{
							"key": "accessKey",
							"value": "{{AWS_ACCESS_KEY}}",
							"type": "string"
						},
						{
							"key": "service",
							"value": "ec2",
							"type": "string"
						},
						{
							"key": "region",
							"value": "us-east-1",
							"type": "string"
						}
					]
				},
				"method": "GET",
				"header": [],
				"body": {
					"mode": "raw",
					"raw": ""
				},
				"url": {
					"raw": "https://ec2.us-east-1.amazonaws.com/?Action=DescribeRegions&Version=2014-06-15",
					"protocol": "https",
					"host": [
						"ec2",
						"us-east-1",
						"amazonaws",
						"com"
					],
					"path": [
						""
					],
					"query": [
						{
							"key": "Action",
							"value": "DescribeRegions"
						},
						{
							"key": "Version",
							"value": "2014-06-15"
						}
					]
				}
			},
			"response": []
		}
	]
}

test.js

// Auto-generated by the Load Impact converter

import "./libs/shim/core.js";
import "./libs/shim/expect.js";
import URI from "./libs/urijs.js";
import aws4 from "./libs/aws4.js";

export let options = { maxRedirects: 4 };

const Request = Symbol.for("request");
postman[Symbol.for("initial")]({
  environment: {
    AWS_ACCESS_KEY: "<removed>",
    AWS_SECRET_KEY: "<removed>"
  }
});

export default function() {
  postman[Request]({
    name: "AWSv4",
    method: "GET",
    address:
      "https://ec2.us-east-1.amazonaws.com/?Action=DescribeRegions&Version=2014-06-15",
    post(response) {
      pm.test("AWSv4 body matches string", function() {
        pm.expect(pm.response.text()).to.include("eu-north-1");
      });
    },
    auth(config, Var) {
      const address = new URI(config.address);
      const options = {
        method: "get",
        protocol: address.protocol(),
        hostname: address.hostname(),
        port: address.port(),
        path: address.path() + address.search(),
        region: "us-east-1",
        service: "ec2"
      };
      const credential = {
        accessKeyId: `${pm[Var]("AWS_ACCESS_KEY")}`,
        secretAccessKey: `${pm[Var]("AWS_SECRET_KEY")}`
      };
      const signed = aws4.sign(options, credential);
      config.address = new URI()
        .protocol(address.protocol())
        .hostname(signed.hostname)
        .path(signed.path)
        .toString();
      Object.assign(config.headers, signed.headers);
    }
  });
}