68 lines
1.9 KiB
JavaScript
68 lines
1.9 KiB
JavaScript
/* eslint-disable import/no-commonjs */
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/*
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Common code for the budget program examples
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*/
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function getTransactionFee(connection) {
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return connection.getRecentBlockhash().then(response => {
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return response.feeCalculator;
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});
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}
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function showBalance(connection, account1, account2, contractState) {
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console.log(`\n== Account State`);
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return Promise.all([
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connection.getBalance(account1.publicKey),
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connection.getBalance(account2.publicKey),
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connection.getBalance(contractState.publicKey),
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]).then(([fromBalance, toBalance, contractStateBalance]) => {
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console.log(
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`Account1: ${account1.publicKey} has a balance of ${fromBalance}`,
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);
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console.log(
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`Account2: ${account2.publicKey} has a balance of ${toBalance}`,
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);
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console.log(
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`Contract State: ${contractState.publicKey} has a balance of ${contractStateBalance}`,
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);
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});
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}
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function confirmTransaction(connection, signature) {
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console.log('Confirming transaction:', signature);
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return connection.getSignatureStatus(signature).then(confirmation => {
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if (confirmation && 'Ok' in confirmation) {
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console.log('Transaction confirmed');
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} else if (confirmation) {
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throw new Error(
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`Transaction was not confirmed (${JSON.stringify(confirmation.Err)})`,
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);
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} else {
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throw new Error(`Transaction was not confirmed (${confirmation})`);
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}
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});
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}
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function airDrop(connection, account, feeCalculator) {
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const airdrop = 100 + 5 * feeCalculator.targetLamportsPerSignature;
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console.log(`\n== Requesting airdrop of ${airdrop} to ${account.publicKey}`);
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return connection
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.requestAirdrop(account.publicKey, airdrop)
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.then(signature => confirmTransaction(connection, signature));
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}
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function sleep(millis) {
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return new Promise(resolve => {
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setTimeout(resolve, millis);
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});
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}
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module.exports = {
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airDrop,
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confirmTransaction,
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getTransactionFee,
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showBalance,
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sleep,
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};
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