Solana: How to get SOL balance change for a Pompan exchange?
How to get SOL balance change for a PumpFun swap on Solana
As of the latest Solana updates, it is not possible to directly get the SOL (Solana) balance change via the getTransaction method. However, I can walk you through the process to achieve this.
Understanding the transaction response
When using the Solana API for transactions, such as getTransaction, it returns a transaction object that contains information about the recent transaction. The transaction response typically includes several properties, including the current balance of various assets.
In your case, when trying to get the SOL balance change via getTransaction(), you are only getting the balance of the PumpFun token. To achieve the desired result, you need to combine the transaction data with additional information to calculate the SOL balance change.
PumpFun Swap Transaction Structure
To perform a Pumpfun swap on Solana, you will need to execute multiple transactions for each asset involved in the swap. Here is an example of how you can structure these transactions:
// Pumpfun Swap Transaction Structure
type PumpfunSwapTransaction = {
account0: string,
account1: string,
data: Uint8Array,
};
// Create a Pumpfun Swap Transaction
const pumpfunSwapTx = {
accounts: [
{ name: "pumpfun", type: "pubkey", pubkey: "0x...PUMPFUN_TOKEN_PUBKEY" },
{ name: "account1", type: "pubkey", pubkey: "0x...ACCOUNT1_PUBKEY" },
{ name: "data", type: "bytes", data: Uint8Array.from(...),
// Additional accounts and data for the exchange
},
],
};
// Create a transaction object with pumpfun's swap transaction structure
const tx = {
account0: "pumpfun",
account1: "account1",
data: pumpfunSwapTx,
};
Calculating SOL balance change
To calculate the SOL balance change, you need to run multiple transactions for each asset involved in the swap. Here is an example of how you can do that:
// Create a transaction object with multiple pumpfun swap transactions
const txs: PumpfunSwapTransaction[] = [];
for (let i = 0; i < 10; i++) {
const account1 = "account1" + String.fromCharCode(97 + i); // Generate account names for each asset
const data = Uint8Array.from([...], () => (i * 16).toString(16)); // Generate a random byte array
const pumpfunSwapTx = {
accounts: [
{ name: "pumpfun", type: "pubkey", pubkey: 0x${account1} },
{ name: "data", type: "bytes", data: Uint8Array.from(..., ...), / Account and additional data / },
],
};
txs.push(pumpfunSwapTx);
}
// Create a transaction object with pumpfun swap transactions
const tx = {
account0: "pumpfun",
account1: "account1" + String. fromCharCode(97, 9),
data: pumpfunSwapTx,
};
// Submit the transaction (single transaction submission)
submitTransaction(tx);
Note: The example above assumes a simple pumpfun swap scenario. In reality, you would need to manage multiple asset swaps and additional accounts.
The getTransaction method does not provide direct access to the SOL balance change. However, by running multiple transactions for each asset involved in the swap, you can calculate the desired SOL balance change.
Additional Tips:
- Be sure to check the Solana API documentation for the latest information on submitting and executing transactions.
- Consider using a tool like
solscanorsolhintto help identify potential issues with your transactions.
- Always handle errors and exceptions appropriately when working with the Solana API.