Delegating Access to the Solver

Step 3: Delegating Access to the Solver

For instant trading, you need to delegate certain function access rights to the SYMM solver (also called PartyB). You can read more about this requirement here.

Required Function Selectors

The following function selectors are required for instant trading:

• 0x7f2755b2 - sendQuote

• 0x40f1310c - sendQuoteWithAffiliate

• 0x501e891f - requestToClosePosition

Example Code (Delegating Access via MultiAccount for a sub-account)

from dotenv import load_dotenv
import os
import json
from web3 import Web3

load_dotenv()

CONFIG = {
    "rpc_url": os.getenv("RPC_URL"),
    "private_key": os.getenv("PRIVATE_KEY"),
    "multiaccount_address": os.getenv("MULTIACCOUNT_ADDRESS"),
    "sub_account_address": os.getenv("SUB_ACCOUNT_ADDRESS"),
    "party_b_address": os.getenv("PARTY_B_ADDRESS"),
}

class MultiAccountClient:
    def __init__(self, config):
        self.config = config
        
        abi_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "abi", "MultiAccount.json"))
        with open(abi_path, "r") as abi_file:
            self.abi = json.load(abi_file)
        
        self.w3 = Web3(Web3.HTTPProvider(config["rpc_url"]))
        self.account = self.w3.eth.account.from_key(config["private_key"])
        self.multiaccount = self.w3.eth.contract(
            address=Web3.to_checksum_address(config["multiaccount_address"]),
            abi=self.abi
        )
    
    def delegate_accesses(self, account_address: str, target_address: str, selectors: list, state: bool):
        """Batch delegate access for multiple function selectors"""
        try:
            selectors_bytes = [Web3.to_bytes(hexstr=s) for s in selectors]
            txn = self.multiaccount.functions.delegateAccesses(
                Web3.to_checksum_address(account_address),
                Web3.to_checksum_address(target_address),
                selectors_bytes,
                state
            ).build_transaction({
                "from": self.account.address,
                "nonce": self.w3.eth.get_transaction_count(self.account.address, "pending"),
                "gas": 400000,
                "gasPrice": self.w3.eth.gas_price,
            })
            signed_txn = self.w3.eth.account.sign_transaction(txn, private_key=self.config["private_key"])
            tx_hash = self.w3.eth.send_raw_transaction(signed_txn.raw_transaction)
            print(f"Delegate accesses transaction sent: {tx_hash.hex()}")
            self.w3.eth.wait_for_transaction_receipt(tx_hash)
            print("Delegate accesses transaction confirmed.")
        except Exception as e:
            print(f"Error delegating accesses: {e}")
            raise

def main():
    client = MultiAccountClient(CONFIG)
    sub_account_address = CONFIG["sub_account_address"]
    party_b_address = CONFIG["party_b_address"]
    selectors = [
        "0x7f2755b2",  # sendQuote
        "0x40f1310c",  # sendQuoteWithAffiliate
        "0x501e891f",  # requestToClosePosition
    ]
    state = True

    print("Batch delegating access for Instant Open and Instant Close...")
    client.delegate_accesses(sub_account_address, party_b_address, selectors, state)

if __name__ == "__main__":
    main()