How to get SOL balance change from PumpFun to Solana conversion
Since the latest Solana updates, it is not possible to directly retrieve the SOL (Solana) balance change using the “getTransaction” method. However, I can walk you through the process of achieving this.
Interpreting the transaction response
When you use the Solana transaction API, such as “getTransaction”, it returns a transaction object that contains information about the last transaction. The transaction response typically contains several properties, including the current balance of various assets.
In your case, when you try to access the SOL balance change using “getTransaction()”, you only get the pumpfun token balance. 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
If you want to perform a pumpfun swap to Solana, you need to execute multiple transactions for each asset you want to swap. Here is an example of how these transactions can be structured:
// 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 to swap
},
],
};
// Create a transaction object with the pumpfun swap transaction structure
const tx = {
account0: "pumpfun",
account1: "account1",
date: pumpfunSwapTx,
};
Calculating the change in SOL balance
To calculate the change in SOL balance, you need to perform multiple transactions for each asset you want to swap. Here is an example of how to do it:
// 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 resource
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(..., ...), / More account and data / },
],
};
txs.push(pumpfunSwapTx);
}
// Create a transaction object with pumpfun swap transactions
const tx = {
account0: "pumpfun",
account1: "account1" + String.fromCharCode(97, 9),
date: pumpfunSwapTx,
};
// Submit a transaction (send a single transaction)
submitTransaction(tx);
Note:
The above example assumes a simple pumpfun swap scenario. In reality, you would have to handle multiple asset swaps and additional accounts.
The “getTransaction” method does not provide direct access to changing the SOL balance. However, if you make multiple trades for each asset to be swapped, you can calculate the desired change in the SOL balance.
Additional Tips:
- For the latest information on submitting and executing transactions, please check the Solana API documentation.
- Consider using a tool like “solscan” or “solhint” to help identify potential issues with transactions.
- Always handle errors and exceptions appropriately when working with the Solana API.