@solana-developers/helpers
Version:
Solana helper functions
56 lines • 2.6 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.airdropIfRequired = exports.initializeKeypair = void 0;
const web3_js_1 = require("@solana/web3.js");
const keypair_1 = require("./keypair");
const DEFAULT_AIRDROP_AMOUNT = 1 * web3_js_1.LAMPORTS_PER_SOL;
const DEFAULT_MINIMUM_BALANCE = 0.5 * web3_js_1.LAMPORTS_PER_SOL;
const DEFAULT_ENV_KEYPAIR_VARIABLE_NAME = "PRIVATE_KEY";
// TODO: honestly initializeKeypair is a bit vague
// we can probably give this a better name,
// just not sure what yet
const initializeKeypair = async (connection, options) => {
const { keypairPath, envFileName, envVariableName = DEFAULT_ENV_KEYPAIR_VARIABLE_NAME, airdropAmount = DEFAULT_AIRDROP_AMOUNT, minimumBalance = DEFAULT_MINIMUM_BALANCE, } = options || {};
let keypair;
if (keypairPath) {
keypair = await (0, keypair_1.getKeypairFromFile)(keypairPath);
}
else if (process.env[envVariableName]) {
keypair = (0, keypair_1.getKeypairFromEnvironment)(envVariableName);
}
else {
keypair = web3_js_1.Keypair.generate();
await (0, keypair_1.addKeypairToEnvFile)(keypair, envVariableName, envFileName);
}
if (airdropAmount) {
await (0, exports.airdropIfRequired)(connection, keypair.publicKey, airdropAmount, minimumBalance);
}
return keypair;
};
exports.initializeKeypair = initializeKeypair;
// Not exported as we don't want to encourage people to
// request airdrops when they don't need them, ie - don't bother
// the faucet unless you really need to!
const requestAndConfirmAirdrop = async (connection, publicKey, amount) => {
const airdropTransactionSignature = await connection.requestAirdrop(publicKey, amount);
// Wait for airdrop confirmation
const latestBlockHash = await connection.getLatestBlockhash();
await connection.confirmTransaction({
blockhash: latestBlockHash.blockhash,
lastValidBlockHeight: latestBlockHash.lastValidBlockHeight,
signature: airdropTransactionSignature,
},
// "finalized" is slow but we must be absolutely sure
// the airdrop has gone through
"finalized");
return connection.getBalance(publicKey, "finalized");
};
const airdropIfRequired = async (connection, publicKey, airdropAmount, minimumBalance) => {
const balance = await connection.getBalance(publicKey, "confirmed");
if (balance < minimumBalance) {
return requestAndConfirmAirdrop(connection, publicKey, airdropAmount);
}
return balance;
};
exports.airdropIfRequired = airdropIfRequired;
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