Read config from a config file and refactor code
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parent
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11
environments/local.toml
Normal file
11
environments/local.toml
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@ -0,0 +1,11 @@
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[upstream]
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rpcEndpoint = "http://localhost:26657"
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chainId = "laconic_9000-1"
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denom = "photon"
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prefix = "laconic"
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faucetKey = ""
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[server]
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transferAmount = 1000000
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dailyLimit = 3000000
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dbDir = "db"
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@ -2,8 +2,6 @@
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"name": "laconic-testnet-faucet",
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"version": "0.1.0",
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"main": "dist/index.js",
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"repository": "git@github.com:deep-stack/laconic-testnet-faucet.git",
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"author": "Prathamesh Musale <prathamesh.musale0@gmail.com>",
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"license": "UNLICENSED",
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"private": true,
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"devDependencies": {
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@ -24,7 +22,8 @@
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"@cosmjs/proto-signing": "^0.32.4",
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"@cosmjs/stargate": "^0.32.4",
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"@keyv/sqlite": "^3.6.7",
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"express": "^4.19.2"
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"express": "^4.19.2",
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"toml": "^3.0.0"
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},
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"scripts": {
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"lint": "eslint .",
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162
src/index.ts
162
src/index.ts
@ -1,45 +1,120 @@
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import express from 'express';
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import Keyv from 'keyv';
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import fs from 'fs';
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import path from 'path';
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import toml from 'toml';
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import { DirectSecp256k1Wallet } from '@cosmjs/proto-signing';
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import { GasPrice, SigningStargateClient } from '@cosmjs/stargate';
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import KeyvSqlite from '@keyv/sqlite';
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// TODO: Take from a config file
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const config = {
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rpcEndpoint: 'https://rpc.example.com',
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faucetKey: 'your faucet key here',
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chainId: 'laconic_9000-1',
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denom: 'photon',
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amount: '1000000',
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prefix: 'laconic',
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dailyLimit: '3000000',
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dbPath: './db/faucet_data.sqlite'
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};
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const CONFIG_PATH = 'environments/local.toml';
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const FAUCET_DATA_FILE = 'faucet_data.sqlite';
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// Initialize KV store with SQLite backend
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const keyv = new Keyv({
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store: new KeyvSqlite({
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uri: `sqlite://${config.dbPath}`,
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table: 'keyv'
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})
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});
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interface Config {
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upstream: {
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rpcEndpoint: string
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chainId: string
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denom: string
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prefix: string
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faucetKey: string
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},
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server: {
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transferAmount: string
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dailyLimit: string
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dbDir: string
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}
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}
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const app = express();
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app.use(express.json());
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async function main (): Promise<void> {
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// Read and parse the configuration
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const configFile = fs.readFileSync(CONFIG_PATH, 'utf-8');
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const config: Config = toml.parse(configFile);
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console.log('Config: ', JSON.stringify(config, null, 2));
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const keyv = await initKVStore(config.server.dbDir);
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const app = express();
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app.use(express.json());
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app.post('/faucet', async (req, res) => {
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const { address } = req.body;
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if (!address) {
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return res.status(400).json({ error: 'Address is required' });
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}
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// Check rate limit
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const now = Date.now();
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const today = new Date(now).toISOString().split('T')[0];
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const key = `${address}:${today}`;
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const currentAmount = await keyv.get(key) || '0';
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if (BigInt(currentAmount) + BigInt(config.server.transferAmount) > BigInt(config.server.dailyLimit)) {
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return res.status(429).json({ error: 'Limit exceeded' });
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}
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try {
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const txHash = await sendTokens(config, address, String(config.server.transferAmount));
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console.log(`Sent tokens to address: ${address}, txHash: ${txHash}`);
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// Update rate limit
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await keyv.set(key, (BigInt(currentAmount) + BigInt(config.server.transferAmount)).toString(), 86400000); // 24 hours TTL
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res.json({ success: true, txHash });
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} catch (error) {
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console.error('Error sending tokens:', error);
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res.status(500).json({ error: 'Failed to send tokens' });
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}
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});
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const PORT = process.env.PORT || 3000;
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app.listen(PORT, () => {
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console.log(`Faucet server running on port ${PORT}`);
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});
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}
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async function initKVStore (dbDir: string): Promise<Keyv> {
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const dbDirPath = path.resolve(dbDir);
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// Create the database dir if it doesn't exist
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fs.mkdir(dbDirPath, { recursive: true }, (err) => {
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if (err) {
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if (err.code !== 'EEXIST') {
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console.error(`Error creating db directory: ${err.message}`);
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}
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}
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console.log(`Using DB directory '${dbDirPath}'`);
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});
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// Initialize KV store with SQLite backend
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return new Keyv({
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store: new KeyvSqlite({
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uri: `sqlite://${path.resolve(dbDirPath, FAUCET_DATA_FILE)}`,
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table: 'keyv'
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})
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});
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}
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async function sendTokens (config: Config, recipientAddress: string, amount: string): Promise<string> {
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let faucetKey = config.upstream.faucetKey;
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if (faucetKey.startsWith('0x')) {
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faucetKey = faucetKey.slice(2);
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}
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async function sendTokens (recipientAddress: string, amount: string): Promise<string> {
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const wallet = await DirectSecp256k1Wallet.fromKey(
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Buffer.from(config.faucetKey, 'hex'),
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config.prefix
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Buffer.from(faucetKey, 'hex'),
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config.upstream.prefix
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);
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const [faucetAccount] = await wallet.getAccounts();
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const client = await SigningStargateClient.connectWithSigner(config.rpcEndpoint, wallet, { gasPrice: GasPrice.fromString(`0.01${config.denom}`) });
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const client = await SigningStargateClient.connectWithSigner(config.upstream.rpcEndpoint, wallet, { gasPrice: GasPrice.fromString(`0.01${config.upstream.denom}`) });
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const result = await client.sendTokens(
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faucetAccount.address,
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recipientAddress,
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[{ denom: config.denom, amount: amount }],
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[{ denom: config.upstream.denom, amount: amount }],
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'auto',
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'Faucet transfer'
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);
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@ -47,39 +122,6 @@ async function sendTokens (recipientAddress: string, amount: string): Promise<st
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return result.transactionHash;
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}
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app.post('/faucet', async (req, res) => {
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const { address } = req.body;
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if (!address) {
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return res.status(400).json({ error: 'Address is required' });
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}
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// Check rate limit
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const now = Date.now();
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const today = new Date(now).toISOString().split('T')[0];
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const key = `${address}:${today}`;
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const currentAmount = await keyv.get(key) || '0';
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if (BigInt(currentAmount) + BigInt(config.amount) > BigInt(config.dailyLimit)) {
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return res.status(429).json({ error: 'Limit exceeded' });
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}
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try {
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const txHash = await sendTokens(address, config.amount);
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console.log(`Sent tokens to address ${address}`);
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// Update rate limit
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await keyv.set(key, (BigInt(currentAmount) + BigInt(config.amount)).toString(), 86400000); // 24 hours TTL
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res.json({ success: true, txHash });
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} catch (error) {
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console.error('Error sending tokens:', error);
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res.status(500).json({ error: 'Failed to send tokens' });
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}
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});
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const PORT = process.env.PORT || 3000;
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app.listen(PORT, () => {
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console.log(`Faucet server running on port ${PORT}`);
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main().catch(err => {
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console.log(err);
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});
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@ -3076,6 +3076,11 @@ toidentifier@1.0.1:
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resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.1.tgz#3be34321a88a820ed1bd80dfaa33e479fbb8dd35"
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integrity sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==
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toml@^3.0.0:
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version "3.0.0"
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resolved "https://registry.yarnpkg.com/toml/-/toml-3.0.0.tgz#342160f1af1904ec9d204d03a5d61222d762c5ee"
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integrity sha512-y/mWCZinnvxjTKYhJ+pYxwD0mRLVvOtdS2Awbgxln6iEnt4rk0yBxeSBHkGJcPucRiG0e55mwWp+g/05rsrd6w==
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ts-node@^10.9.2:
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version "10.9.2"
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resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-10.9.2.tgz#70f021c9e185bccdca820e26dc413805c101c71f"
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