pumpfun-bonkfun-bot/learning-examples/blockSubscribe_extract_transactions.py

import asyncio
import hashlib
import json
import os

import websockets
from solders.pubkey import Pubkey

PUMP_PROGRAM = Pubkey.from_string("6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P")
WSS_ENDPOINT = os.environ.get("SOLANA_NODE_WSS_ENDPOINT")


async def save_transaction(tx_data, tx_signature):
    os.makedirs("blockSubscribe-transactions", exist_ok=True)
    hashed_signature = hashlib.sha256(tx_signature.encode()).hexdigest()
    file_path = os.path.join("blockSubscribe-transactions", f"{hashed_signature}.json")
    with open(file_path, "w") as f:
        json.dump(tx_data, f, indent=2)
    print(f"Saved transaction: {hashed_signature[:8]}...")


async def listen_for_transactions():
    async with websockets.connect(WSS_ENDPOINT) as websocket:
        subscription_message = json.dumps(
            {
                "jsonrpc": "2.0",
                "id": 1,
                "method": "blockSubscribe",
                "params": [
                    {"mentionsAccountOrProgram": str(PUMP_PROGRAM)},
                    {
                        "commitment": "confirmed",
                        "encoding": "base64",
                        "showRewards": False,
                        "transactionDetails": "full",
                        "maxSupportedTransactionVersion": 0,
                    },
                ],
            },
        )
        await websocket.send(subscription_message)
        print(f"Subscribed to blocks mentioning program: {PUMP_PROGRAM}")

        while True:
            try:
                response = await websocket.recv()
                data = json.loads(response)

                if "method" in data and data["method"] == "blockNotification":
                    if "params" in data and "result" in data["params"]:
                        block_data = data["params"]["result"]
                        if "value" in block_data and "block" in block_data["value"]:
                            block = block_data["value"]["block"]
                            if "transactions" in block:
                                transactions = block["transactions"]
                                for tx in transactions:
                                    if isinstance(tx, dict) and "transaction" in tx:
                                        if (
                                            isinstance(tx["transaction"], list)
                                            and len(tx["transaction"]) > 0
                                        ):
                                            tx_signature = tx["transaction"][0]
                                        elif (
                                            isinstance(tx["transaction"], dict)
                                            and "signatures" in tx["transaction"]
                                        ):
                                            tx_signature = tx["transaction"][
                                                "signatures"
                                            ][0]
                                        else:
                                            continue
                                        await save_transaction(tx, tx_signature)
                elif "result" in data:
                    print("Subscription confirmed")
            except Exception as e:
                print(f"An error occurred: {e!s}")


if __name__ == "__main__":
    asyncio.run(listen_for_transactions())