88 lines
2.5 KiB
TypeScript
88 lines
2.5 KiB
TypeScript
import yargs from "yargs";
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import { hideBin } from "yargs/helpers";
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import { toPrivateKey } from "../src";
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import {
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COMMON_DEPLOY_OPTIONS,
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findEntropyContract,
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findEvmChain,
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} from "./common";
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import Web3 from "web3";
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const parser = yargs(hideBin(process.argv))
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.usage(
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"Requests a random number from an entropy contract and measures the\n" +
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"latency between request submission and fulfillment by the Fortuna keeper service.\n" +
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"Usage: $0 --chain-id <chain-id> --private-key <private-key>"
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)
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.options({
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chain: {
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type: "string",
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demandOption: true,
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desc: "test latency for the contract on this chain",
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},
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"private-key": COMMON_DEPLOY_OPTIONS["private-key"],
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});
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async function main() {
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const argv = await parser.argv;
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const chain = findEvmChain(argv.chain);
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const contract = findEntropyContract(chain);
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const provider = await contract.getDefaultProvider();
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const userRandomNumber = contract.generateUserRandomNumber();
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const privateKey = toPrivateKey(argv.privateKey);
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const requestResponse = await contract.requestRandomness(
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userRandomNumber,
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provider,
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privateKey,
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true // with callback
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);
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console.log(`Request tx hash : ${requestResponse.transactionHash}`);
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// Read the sequence number for the request from the transaction events.
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const sequenceNumber =
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requestResponse.events.RequestedWithCallback.returnValues.sequenceNumber;
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console.log(`sequence : ${sequenceNumber}`);
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const startTime = Date.now();
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let fromBlock = requestResponse.blockNumber;
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const web3 = new Web3(contract.chain.getRpcUrl());
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const entropyContract = contract.getContract();
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// eslint-disable-next-line no-constant-condition
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while (true) {
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const currentBlock = await web3.eth.getBlockNumber();
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if (fromBlock > currentBlock) {
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continue;
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}
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const events = await entropyContract.getPastEvents("RevealedWithCallback", {
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fromBlock: fromBlock,
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toBlock: currentBlock,
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});
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fromBlock = currentBlock + 1;
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const event = events.find(
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(event) => event.returnValues.request[1] == sequenceNumber
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);
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if (event !== undefined) {
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console.log(`Random number : ${event.returnValues.randomNumber}`);
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const endTime = Date.now();
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console.log(`Fortuna Latency : ${endTime - startTime}ms`);
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console.log(
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`Revealed after : ${
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currentBlock - requestResponse.blockNumber
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} blocks`
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);
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break;
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}
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await new Promise((resolve) => setTimeout(resolve, 300));
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}
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}
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main();
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