Sushi交换路由处理器的生成路由processRoute契约方法

Question

我正试图通过Sushi交换来编程地使用RouteProcessor智能契约。在这里，您可以看到合同https://etherscan.io/address/0xF70c086618dcf2b1A461311275e00D6B722ef914。我收集了所有参数的信息，但找不到关于如何确定路由参数的任何描述。那么你是如何生成路由的呢？

谢谢你的帮助。

这是我试图运行的代码，用于交换仲裁Nova链中的ETH -> ARB。

from eth_abi import encode
from web3 import Web3

arbitrum_nova_rpc_url = 'https://nova.arbitrum.io/rpc'
wallet_address = '<your address here>'

route_processor_abi = '[{"inputs":[{"internalType":"address","name":"_bentoBox","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"bentoBox","outputs":[{"internalType":"contract IBentoBoxMinimal","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"route","type":"bytes"}],"name":"processRoute","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address payable","name":"transferValueTo","type":"address"},{"internalType":"uint256","name":"amountValueTransfer","type":"uint256"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"route","type":"bytes"}],"name":"transferValueAndprocessRoute","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]'
route_processor_arbitrum_nova_address = '0xaB235da7f52d35fb4551AfBa11BFB56e18774A65'

# Generate route here
arbitrum_nova_ether_address = '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'
arbitrum_nova_weth_address = '0x722E8BdD2ce80A4422E880164f2079488e115365'
arbitrum_nova_arbitrum_address = '0xf823C3cD3CeBE0a1fA952ba88Dc9EEf8e0Bf46AD'

byte_ether_address = encode(['address'], [web3.to_checksum_address(arbitrum_nova_ether_address)])
byte_weth_address = encode(['address'], [web3.to_checksum_address(arbitrum_nova_weth_address)])
byte_arb_address = encode(['address'], [web3.to_checksum_address(arbitrum_nova_arbitrum_address)])

route = byte_ether_address + byte_weth_address + byte_arb_address

web3 = Web3(Web3.HTTPProvider(arbitrum_nova_rpc_url))

contract = web3.eth.contract(
    address=route_processor_arbitrum_nova_address, 
    abi=route_processor_abi
)

tx = contract.functions.processRoute(
    web3.to_checksum_address(arbitrum_nova_ether_address),  # token in
    web3.to_wei(0.0001, 'ether'),  # amount in
    web3.to_checksum_address(arbitrum_nova_arbitrum_address),  # token out
    0,  # amount out min
    web3.to_checksum_address(address),  # to address
    route # route
)

tx.build_transaction({
    "nonce": web3.eth.get_transaction_count(address),
    "value": 0
})

Answer 1

route参数应该是编码要交换的令牌路径的bytes值。

就像您想要将以太交换为ARBITRUM，并且路径包括首先将Ether转换为WETH，然后将WETH转换为ARBITRUM，route类似于下面的示例

from eth_abi import encode_single

eth_address = web3.to_checksum_address(arbitrum_nova_ether_address)
weth_address = web3.to_checksum_address(arbitrum_nova_weth_address)
arb_address = web3.to_checksum_address(arbitrum_nova_arbitrum_address)

encoded_eth = encode_single('address', eth_address)
encoded_weth = encode_single('address', weth_address)
encoded_arb = encode_single('address', arb_address)

您只需将编码的令牌addresses连接起来，形成route参数：route = encoded_eth + encoded_weth + encoded_arb，然后将这个route参数传递给processRoute()

Answer 2

Sushiswap交叉链交换正在接入Layer0 0‘S 星门桥基础设施。在这个项目中，路由器值的输入是基于chainID的。为了更好地理解，我建议阅读这位医生。

星际之门是什么

2- sushiswap多链交换文章

3- starGate gitBook