k6.js

import http from 'k6/http';

const SRA_ENDPOINT = 'https://sra.0x.org';

let pairs;
export default function() {
    if (!pairs) {
        pairs = http.get(`${SRA_ENDPOINT}/v2/asset_pairs?perPage=300`).json().records;
        console.log(JSON.stringify(pairs));
    }
    // Also test /v2/orders with no asset data
    const pair = pairs[Math.floor(Math.random() * (pairs.length + 1))];
    let queryString = '';
    if (pair) {
        queryString = `?makerAssetData=${pair.assetDataA.assetData}&takerAssetData=${pair.assetDataB.assetData}`;
    }
    http.get(`${SRA_ENDPOINT}/v2/orders${queryString}`);
}