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fix(solana): airdrop SOL to mint authority before creating mint

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Mint authority had zero SOL balance on devnet, causing
'Attempt to debit an account but found no record of a prior
credit' error. Now getTokenMint() checks balance, airdrops 2 SOL
if needed, then creates the SPL token mint. Also added caching
so mint is only created once.
This commit is contained in:
Dustin Newkirk
2026-04-21 15:18:45 -04:00
parent 9b5d477852
commit 871c01c79e
1 changed files with 42 additions and 20 deletions
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backend/src/services/solana.ts
+42 -20
View File
@@ -38,33 +38,55 @@ try {
export const connection = new Connection(RPC_URL, "confirmed");
let cachedMint: PublicKey | null = null;
// Get or create token mint address
export async function getTokenMint(): Promise<PublicKey | null> {
try {
// Check env first
if (process.env.SOLANA_MINT_ADDRESS) {
return new PublicKey(process.env.SOLANA_MINT_ADDRESS);
// Return cached mint
if (cachedMint) {
return cachedMint;
}
// Check database
const config = await prisma.systemSettings.findFirst();
if (config?.id) {
// Use a fixed mint derived from program ID for determinism
const mintKeypair = Keypair.generate();
// For now, auto-create mint on devnet if authority exists
if (mintAuthority && RPC_URL.includes("devnet")) {
console.log("Auto-creating token mint on devnet...");
const mint = await createMint(
connection,
mintAuthority,
mintAuthority.publicKey,
null,
DECIMALS,
mintKeypair,
// Check env first
if (process.env.SOLANA_MINT_ADDRESS) {
cachedMint = new PublicKey(process.env.SOLANA_MINT_ADDRESS);
return cachedMint;
}
// Auto-create mint on devnet if authority exists
if (mintAuthority && RPC_URL.includes("devnet")) {
console.log("Auto-creating token mint on devnet...");
// Fund mint authority with SOL first
const balance = await connection.getBalance(mintAuthority.publicKey);
if (balance < 500000000) {
console.log(
`Airdropping SOL to mint authority ${mintAuthority.publicKey.toBase58()}...`,
);
console.log(`Token mint created: ${mint.toBase58()}`);
return mint;
const signature = await connection.requestAirdrop(
mintAuthority.publicKey,
2 * 1000000000,
);
await connection.confirmTransaction(signature);
console.log("Airdrop complete");
}
const mintKeypair = Keypair.generate();
const mint = await createMint(
connection,
mintAuthority,
mintAuthority.publicKey,
null,
DECIMALS,
mintKeypair,
);
cachedMint = mint;
console.log(`Token mint created: ${mint.toBase58()}`);
console.log(
`Add SOLANA_MINT_ADDRESS=${mint.toBase58()} to your .env to persist it`,
);
return mint;
}
return null;
} catch (error) {