背景

项目后期需要准备一个ETH体系的资产IBC服务，设计要求轻量稳定安全。
前面对poly做过技术调研，相对去中心化，但导致运行和运维成本过高，以及近期出现的安全性问题，所以暂时搁置。
本片文章将针对BSC提供的Swap服务做技术调研，由于没有找到官方的部署文档，只有技术实现讲解，所以本篇文章将从合约代码，以及Swap程序代码阅读方向进行部署文档的反推整理。

合约实现包含了可升级合约的实现架构，相关技术细节可参考《使用OpenZeppelin编写可升级合约》

本篇文章先做bsc-eth-swap项目的部署和测试整理，后面将针对服务做二次开发或者模式技术参考，目标是开发出一个ETH体系多链资产和NFT轻量的IBC服务，后期再迭代成多节点去中心化模式。

项目组成

项目合约：https://github.com/binance-chain/eth-bsc-swap-contracts.git
项目程序：https://github.com/binance-chain/bsc-eth-swap.git

官方文档

https://github.com/binance-chain/bsc-eth-swap/blob/main/docs/spec.md

编译合约

git clone https://github.com/binance-chain/eth-bsc-swap-contracts.git
cd eth-bsc-swap-contracts/
sudo npm i -g truffle
npm i
npm run truffle:compile

部署合约

为了方便测试，以及etherscan区块浏览器对于数据的展示较完整，所以我们选择的测试网络为

Goerli Test Network
Ropsten Test Network

ETH合约部署在Goerli（主），BSC合约部署在Ropsten（侧）

ETH链合约部署

部署网络

Goerli Test Network

部署`ETHSwapAgentImpl`合约

使用编译后的build\contracts\ETHSwapAgentImpl.json中的abi和bytecode部署合约。

ETHSwapAgentImpl ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"erc20Addr","type":"address"},{"indexed":true,"internalType":"bytes32","name":"bscTxHash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"toAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"SwapFilled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sponsor","type":"address"},{"indexed":true,"internalType":"address","name":"erc20Addr","type":"address"},{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":false,"internalType":"string","name":"symbol","type":"string"},{"indexed":false,"internalType":"uint8","name":"decimals","type":"uint8"}],"name":"SwapPairRegister","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"erc20Addr","type":"address"},{"indexed":true,"internalType":"address","name":"fromAddr","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"feeAmount","type":"uint256"}],"name":"SwapStarted","type":"event"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"filledBSCTx","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"registeredERC20","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"fee","type":"uint256"},{"internalType":"address payable","name":"ownerAddr","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fee","type":"uint256"}],"name":"setSwapFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"erc20Addr","type":"address"}],"name":"registerSwapPairToBSC","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"bscTxHash","type":"bytes32"},{"internalType":"address","name":"erc20Addr","type":"address"},{"internalType":"address","name":"toAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"fillBSC2ETHSwap","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"erc20Addr","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"swapETH2BSC","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"}]

ETHSwapAgentImpl bytecode

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部署后的地址是0x4e99e2A70664f30d14b1f703b8bbe077872F5Fb7

部署`ETHSwapAgentUpgradeableProxy`合约

使用编译后的build\contracts\ETHSwapAgentUpgradeableProxy.json中的abi和bytecode部署合约。

ETHSwapAgentUpgradeableProxy abi

[{"inputs":[{"internalType":"address","name":"logic","type":"address"},{"internalType":"address","name":"admin","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"implementation_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

ETHSwapAgentUpgradeableProxy bytecode

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

部署参数

_logic （逻辑合约，也就是上面部署的ETHSwapAgentImpl合约地址）0x4e99e2A70664f30d14b1f703b8bbe077872F5Fb7
Admin_ （升级管理权限地址，需要一个单独的地址，只用于升级合约，不能与当前部署ETHSwapAgentImpl合约的ownerAddr地址相同）0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0
_data （ETHSwapAgentImpl合约中的initialize初始化bytes数据）

ETHSwapAgentImpl中的initialize实现如下

function initialize(uint256 fee, address payable ownerAddr) public initializer {
    swapFee = fee;
    owner = ownerAddr;
}

其中的ownerAddr为逻辑合约管理权限地址，切记不能与升级管理权限地址相同，否则无法执行。fee为跨链需要缴纳的手续费。
简单说就是部署ETHSwapAgentUpgradeableProxy合约时，会把ETHSwapAgentImpl合约一同初始化{_logic.delegatecall(_data)}，此时测试时预定的参数如下

- fee = 100000000
- ownerAddr = 0xbb93FcC2bB90D46255c43DD398A1A372E12bE6Aa

此时计算_data如下

web3js.eth.abi.encodeFunctionCall({
    name: 'initialize',
    type: 'function',
    inputs: [{
        type: 'uint256',
        name: 'fee'
    },{
        type: 'address',
        name: 'ownerAddr'
    }]
}, [100000000, '0xbb93FcC2bB90D46255c43DD398A1A372E12bE6Aa']);

得到

0xda35a26f0000000000000000000000000000000000000000000000000000000005f5e100000000000000000000000000bb93fcc2bb90d46255c43dd398a1a372e12be6aa

最终三个参数为

_logic：0x4e99e2A70664f30d14b1f703b8bbe077872F5Fb7
Admin_：0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0
_data ：0xda35a26f0000000000000000000000000000000000000000000000000000000005f5e100000000000000000000000000bb93fcc2bb90d46255c43dd398a1a372e12be6aa

部署后的地址是0x31366023017888A1ef48ca60cbB5de26aCBe6b02

测试ETHSwapAgentImpl合约

通过逻辑合约管理权限地址0xbb93FcC2bB90D46255c43DD398A1A372E12bE6Aa使用ETHSwapAgentImpl ABI访问ETHSwapAgentUpgradeableProxy部署地址0x31366023017888A1ef48ca60cbB5de26aCBe6b02

查询swapFee等于100000000，然后使用setSwapFee修改值为100000000000000，再次查询确认值与修改值相同
使用registerSwapPairToBSC注册已发行ERC20代币，代币地址0x8ee79e91b1f7b882941f0c11bb91a760134bc644，并通过registeredERC20确认注册成功

测试ETHSwapAgentUpgradeableProxy合约

通过升级合约管理权限地址0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0使用ETHSwapAgentUpgradeableProxy ABI访问ETHSwapAgentUpgradeableProxy部署地址0x31366023017888A1ef48ca60cbB5de26aCBe6b02

使用changeAdmin修改当前升级合约管理权限地址为0x10210572d6b4924Af7Ef946136295e9b209E1FA0，然后验证权限生效，再修改回0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0

一定确认好执行的权限地址是对应的，否则只报执行合约出错

在ETHSwapAgentImp合约中增加一个方法，

function hellowWord() public view returns (string memory) {
    return "https://www.bcskill.com";
}

并重新编译和部署，新部署的地址为0x63F27AEE1A7C228D05f67C43F6C5ED82d726b104
使用upgradeTo修改新逻辑合约地址NewImplementation为0x63F27AEE1A7C228D05f67C43F6C5ED82d726b104
然后通过逻辑合约管理权限地址，使用修改后ETHSwapAgentImpl合约编译得到的ABI，访问ETHSwapAgentUpgradeableProxy部署地址0x31366023017888A1ef48ca60cbB5de26aCBe6b02，执行hellowWord
正确返回https://www.bcskill.com
并再次验证 测试ETHSwapAgentImpl合约中的流程，保证结果都正确

此时ETHSwapAgent合约相关部署已完成，

BSC侧链合约部署

对于BSCSwapAgent相关侧链部署同理，再此不做详细讲解，只做数据的记录

部署网络

Ropsten Test Network

1. BEP20Token合约部署

BEP20TokenImplementation ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint8","name":"decimals","type":"uint8"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"mintable","type":"bool"},{"internalType":"address","name":"owner","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"mintable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"mintTo","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

BEP20TokenImplementation bytecode

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部署地址：0x41941cC749d561A13A3a8295f355033D23fDc060

2. BSCSwapAgent合约部署

BSCSwapAgentImpl合约ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"bep20Addr","type":"address"},{"indexed":true,"internalType":"bytes32","name":"ethTxHash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"toAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"SwapFilled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"ethRegisterTxHash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"bep20Addr","type":"address"},{"indexed":true,"internalType":"address","name":"erc20Addr","type":"address"},{"indexed":false,"internalType":"string","name":"symbol","type":"string"},{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":false,"internalType":"uint8","name":"decimals","type":"uint8"}],"name":"SwapPairCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"bep20Addr","type":"address"},{"indexed":true,"internalType":"address","name":"erc20Addr","type":"address"},{"indexed":true,"internalType":"address","name":"fromAddr","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"feeAmount","type":"uint256"}],"name":"SwapStarted","type":"event"},{"inputs":[],"name":"bep20Implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bep20ProxyAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"filledETHTx","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"swapMappingBSC2ETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"swapMappingETH2BSC","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"bep20Impl","type":"address"},{"internalType":"uint256","name":"fee","type":"uint256"},{"internalType":"address payable","name":"ownerAddr","type":"address"},{"internalType":"address","name":"bep20ProxyAdminAddr","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fee","type":"uint256"}],"name":"setSwapFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"ethTxHash","type":"bytes32"},{"internalType":"address","name":"erc20Addr","type":"address"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint8","name":"decimals","type":"uint8"}],"name":"createSwapPair","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"ethTxHash","type":"bytes32"},{"internalType":"address","name":"erc20Addr","type":"address"},{"internalType":"address","name":"toAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"fillETH2BSCSwap","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"bep20Addr","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"swapBSC2ETH","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"}]

BSCSwapAgentImpl合约bytecode

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部署后地址：0xc5612639db6250a9e44A7d846fe60adCE1f65E53

BSCSwapAgentUpgradeableProxy 合约abi

[{"inputs":[{"internalType":"address","name":"logic","type":"address"},{"internalType":"address","name":"admin","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"implementation_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

BSCSwapAgentUpgradeableProxy 合约bytecode

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

此时计算_data如下

web3js.eth.abi.encodeFunctionCall({
    name: 'initialize',
    type: 'function',
    inputs: [{
        type: 'address',
        name: 'bep20Impl'
    },{
        type: 'uint256',
        name: 'fee'
    },{
        type: 'address',
        name: 'ownerAddr'
    },{
        type: 'address',
        name: 'bep20ProxyAdminAddr'
    }]
}, ['0x41941cC749d561A13A3a8295f355033D23fDc060',100000000, '0xbb93FcC2bB90D46255c43DD398A1A372E12bE6Aa','0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0']);

得到

0x358394d800000000000000000000000041941cc749d561a13a3a8295f355033d23fdc0600000000000000000000000000000000000000000000000000000000005f5e100000000000000000000000000bb93fcc2bb90d46255c43dd398a1a372e12be6aa00000000000000000000000048f155527f25eb1d4cb2aa32b7e84692aa0025c0

最终三个参数为

_logic：0xc5612639db6250a9e44A7d846fe60adCE1f65E53
Admin_：0xF8329Ea42489C2164F44A81DEb3bE22c2C456109
_data ：0x358394d800000000000000000000000041941cc749d561a13a3a8295f355033d23fdc0600000000000000000000000000000000000000000000000000000000005f5e100000000000000000000000000bb93fcc2bb90d46255c43dd398a1a372e12be6aa00000000000000000000000048f155527f25eb1d4cb2aa32b7e84692aa0025c0

部署后的地址：0x2dd3DC6ec3ddC15d05C3719EB329a7E64e00Aad5

BSC合约管理地址

升级管理地址：0xF8329Ea42489C2164F44A81DEb3bE22c2C456109
逻辑合约管理地址：0xbb93FcC2bB90D46255c43DD398A1A372E12bE6Aa
Bep20合约管理地址：0x48F155527f25EB1d4cb2aa32b7e84692AA0025C0

Swap程序部署

编译程序

git clone https://github.com/binance-chain/bsc-eth-swap.git
make build

编译完，服务程序会生成在bsc-eth-swap\build\swap-backend

config配置

由于没有文档，还是看代码吧，先查看demo config config\config.json,以及config解析的代码
从代码角度完善配置参数以及参数作用。

{
  "key_manager_config": {
    "key_type": "local_private_key",
    "aws_region": "",
    "aws_secret_name": "",

    "local_hmac_key": "",
    "local_bsc_private_key": "",
    "local_eth_private_key": "",
    "local_admin_api_key":"",
    "local_admin_secret_key":""
  },
  "db_config": {
    "dialect": "sqlite3",
    "db_path": "./build/test.db"
  },
  "chain_config": {
    "balance_monitor_interval": 60,

    "bsc_observer_fetch_interval": 1,
    "bsc_start_height": 6010146,
    "bsc_provider": "https://ropsten.infura.io/v3/c4f8f662c565463e8e3285708cb41823",
    "bsc_confirm_num": 2,
    "bsc_swap_agent_addr":"0x2dd3DC6ec3ddC15d05C3719EB329a7E64e00Aad5",
    "bsc_explorer_url": "https://ropsten.etherscan.io/tx",
    "bsc_max_track_retry": 60,
    "bsc_alert_threshold": "1000000000000000000",
    "bsc_wait_milli_sec_between_swaps": 100,

    "eth_observer_fetch_interval": 10,
    "eth_start_height": 8018001,
    "eth_provider": "https://goerli.infura.io/v3/87aba2e668f9410498cdf74bc7a35467",
    "eth_confirm_num": 1,
    "eth_swap_agent_addr": "0x31366023017888A1ef48ca60cbB5de26aCBe6b02",
    "eth_explorer_url": "https://goerli.etherscan.io/tx",
    "eth_max_track_retry": 600,
    "eth_alert_threshold": "1000000000000000000",
    "eth_wait_milli_sec_between_swaps": 200
  },
  "log_config": {
    "level": "INFO",
    "filename": "build/test.log",
    "max_file_size_in_mb": 100,
    "max_backups_of_log_files": 1,
    "max_age_to_retain_log_files_in_days": 30,
    "use_console_logger": false,
    "use_file_logger": true,
    "compress": false
  },
  "alert_config": {
    "telegram_bot_id": "",
    "telegram_chat_id": "",
    "block_update_timeout": 10
  },
  "admin_config": {
    "listen_addr": ":8000"
  }
}

启动程序

./build/swap-backend --config-type local --config-path config/config.json

unknown block

由于现有项目不支持 EIP-1559，导致解析 block head错误，block hash无效，报 unknown block

支持EIP-1559

更新 go-ethereum模块

go get github.com/ethereum/go-ethereum@v1.10.8

需要重新生成\bsc-eth-swap\abi\*.goabi.go文件
需要准备合约编译工具环境

首次需要安装solc

sudo pip3 install solc-select
sudo solc-select install 0.6.4 //安装指定版本solc
solc-select use 0.6.4

查看solc安装位置

whereis solc

/usr/local/bin/solc /home/surou/.local/bin/solc

添加到环境变量，或者移动到默认/usr/bin

sudo cp /usr/local/bin/solc  /usr/bin

查看版本solc版本

solc --version

solc, the solidity compiler commandline interface
Version: 0.6.4+commit.1dca32f3.Linux.g++

首次需要安装protobuf

sudo apt install protobuf-compiler

编译go-ethereum

git clone https://github.com/ethereum/go-ethereum.git
cd go-ethereum/
make all

最终生成在go-ethereum\build\bin\abigen
复制到全局

sudo cp ./build/bin/abigen /usr/bin/

重新生成abi和bin

git clone https://github.com/binance-chain/eth-bsc-swap-contracts.git
cd eth-bsc-swap-contracts/
npm run flatten //合并依赖为单文件
cd eth-bsc-swap-contracts/contracts/flattened

BSCSwapAgentImpl

solc --bin ./BSCSwapAgentImpl.sol > BSCSwapAgent.bin //生成文件中只保留BSCSwapAgentImpl独立内容
solc --abi ./BSCSwapAgentImpl.sol > BSCSwapAgent.abi //生成文件中只保留BSCSwapAgentImpl独立内容
abigen --bin=BSCSwapAgent.bin --abi=BSCSwapAgent.abi --pkg=BSCSwapAgent --out=BSCSwapAgent.go

ETHSwapAgentImpl

solc --bin ./ETHSwapAgentImpl.sol > ETHSwapAgent.bin //生成文件中只保留ETHSwapAgentImpl独立内容
solc --abi ./ETHSwapAgentImpl.sol > ETHSwapAgent.abi //生成文件中只保留ETHSwapAgentImpl独立内容
abigen --bin=ETHSwapAgent.bin --abi=ETHSwapAgent.abi --pkg=ETHSwapAgent --out=ETHSwapAgent.go

回到 \bsc-eth-swap\abi目录，将上面生成的BSCSwapAgent.go,BSCSwapAgent.abi,ETHSwapAgent.abi,ETHSwapAgent.go 文件覆盖过来
然后把 BSCSwapAgent.go和ETHSwapAgent.go中的package改为abi

ERC20

cd eth-bsc-swap-contracts/
sudo npm install -g truffle-flattener
truffle-flattener node_modules/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol > contracts/flattened/ERC20.sol

同上将contracts/flattened/ERC20.sol 复制到 \bsc-eth-swap\abi目录中

cd `bsc-eth-swap/abi`
solc --bin ./ERC20.sol > ERC20.bin // 删除多余注释
solc --abi ./ERC20.sol > ERC20.abi // 删除多余注释
abigen --bin=ERC20.bin --abi=ERC20.abi --pkg=ERC20 --out=ERC20.go

修改后的代码已提交

git clone https://github.com/bcskill/bsc-eth-swap.git

常见问题

Cannot convert string to buffer. toBuffer only supports 0x-prefixed hex strings and this string was given: 0x0NaN

把逻辑合约重新部署下，用新地址再试下，或者确认下逻辑合约初始化函数参数，是否与encodeFunctionCall参数一致

admin cannot fallback to proxy target

不能拿升级管理权限地址操作逻辑合约，逻辑合约管理权限地址不能与升级管理权限地址相同

注意

encodeFunctionCall执行时，参数要与函数方法参数顺序一致

在线工具

https://www.sojson.com/yasuoyihang.html

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bsc-eth-swap 编译及部署测试

背景

项目组成

官方文档

编译合约

部署合约

ETH链合约部署

部署网络

部署ETHSwapAgentImpl合约

ETHSwapAgentImpl ABI

ETHSwapAgentImpl bytecode

部署ETHSwapAgentUpgradeableProxy合约

ETHSwapAgentUpgradeableProxy abi

ETHSwapAgentUpgradeableProxy bytecode

部署参数

测试ETHSwapAgentImpl合约

测试ETHSwapAgentUpgradeableProxy合约

此时ETHSwapAgent合约相关部署已完成，

BSC侧链合约部署

部署网络

1. BEP20Token合约部署

BEP20TokenImplementation ABI

BEP20TokenImplementation bytecode

2. BSCSwapAgent合约部署

BSCSwapAgentImpl合约ABI

BSCSwapAgentImpl合约bytecode

BSCSwapAgentUpgradeableProxy 合约abi

BSCSwapAgentUpgradeableProxy 合约bytecode

BSC合约管理地址

Swap程序部署

编译程序

config配置

启动程序

unknown block

支持EIP-1559

更新 go-ethereum模块

首次需要安装solc

首次需要安装protobuf

BSCSwapAgentImpl

ETHSwapAgentImpl

ERC20

常见问题

注意

在线工具

部署`ETHSwapAgentImpl`合约

部署`ETHSwapAgentUpgradeableProxy`合约