如何从Truffle控制台与OpenZeppelin代理合同进行交互？

问题描述

我不知道如何使用 @ truffle / contract 与软件包 @ openzeppelin / truffle-upgrades （ProxyAdmin和AdminUpgradeabilityProxy）部署的合同进行交互。我已将合同部署到Ganache：

   deploying 'MetaToken'
   ---------------------
   > transaction hash:    0xac159783380d929e6de5eb9f2a8cd90146997d340aa6ac1dd0762a97ae3a7379
   > Blocks: 0            Seconds: 0
   > contract address:    0x5aab2dF75BeB13891a640B193C823bE02F11f752
   > block number:        3
   > block timestamp:     1601252702
   > account:             0x43076f318858988550F85Ec308FfC832253f8c9E
   > balance:             99.96601856
   > gas used:            1464575 (0x1658ff)
   > gas price:           20 gwei
   > value sent:          0 ETH
   > total cost:          0.0292915 ETH


   deploying 'ProxyAdmin'
   ----------------------
   > transaction hash:    0xd1d9d3d2272ef3611b66dbf96fe8eaa8ccbc16f595e478f544b657c244f2e33d
   > Blocks: 0            Seconds: 0
   > contract address:    0x34De0046a5FbA24b9aFd32687990e60517FE95F6
   > block number:        4
   > block timestamp:     1601252703
   > account:             0x43076f318858988550F85Ec308FfC832253f8c9E
   > balance:             99.94841932
   > gas used:            879962 (0xd6d5a)
   > gas price:           20 gwei
   > value sent:          0 ETH
   > total cost:          0.01759924 ETH


   deploying 'AdminUpgradeabilityProxy'
   ------------------------------------
   > transaction hash:    0x4e0a725865e6ce322b3479623c07e8a05c2cacdc2e5025b2f400972a5d12b43d
   > Blocks: 0            Seconds: 0
   > contract address:    0x2FCe57853cB98fCd6491ddebc8430E970CA333b5
   > block number:        5
   > block timestamp:     1601252704
   > account:             0x43076f318858988550F85Ec308FfC832253f8c9E
   > balance:             99.93331538
   > gas used:            755197 (0xb85fd)
   > gas price:           20 gwei
   > value sent:          0 ETH
   > total cost:          0.01510394 ETH

这是我尝试过的代码：

Web3 = require("web3")
var provider = new Web3.providers.HttpProvider("http://localhost:7545");
var contract = require("@truffle/contract");
var fs=require("fs");

var DeployJson=fs.readFileSync("/path/Metatoken/node_modules/@openzeppelin/upgrades-core/artifacts/AdminUpgradeabilityProxy.json");
var DeployJs=JSON.parse(DeployJson);

var AdminUpgradeabilityProxy=contract({abi: DeployJs.abi,unlinked_binary: DeployJs.bytecode,address: "0x2FCe57853cB98fCd6491ddebc8430E970CA333b5"});

AdminUpgradeabilityProxy.setProvider(provider);

let i = await AdminUpgradeabilityProxy.deployed()

但是会引发错误：

Error: Contract has not been deployed to detected network (network/artifact mismatch)
    at processticksAndRejections (internal/process/task_queues.js:93:5)
    at Function.deployed (/path/Metatoken/node_modules/@truffle/contract/lib/contract/constructorMethods.js:84:11)
    at Object.checkNetworkArtifactMatch (/path/Metatoken/node_modules/@truffle/contract/lib/utils/index.js:249:13)

网络是相同的（Ganache）。

我在做什么错了？

解决方法

deployed()中的truffle-contract方法将查找存储在合同工件中的部署地址（即代码中的DeployJson）。仅当您通过迁移部署合同时才设置此值，最重要的是，它在实现合同的工件上设置。在这种情况下，它将是MetaToken。

要与部署的实例进行交互，您需要执行以下操作：

const MetaToken = artifacts.require('MetaToken');
const instance = await MetaToken.deployed();

或者，绕过deployed()机制并直接附加：

const MetaToken = artifacts.require('MetaToken');
const instance = await MetaToken.at('0x2FCe57853cB98fCd6491ddebc8430E970CA333b5');

这将返回带有MetaToken ABI的代理地址（truffle-contract）0x2FCe57853cB98fCd6491ddebc8430E970CA333b5的实例，这可能是您想要的。

如果要与代理进行交互以升级或更改所有者，则应通过upgrades plugin methods进行。

OpenZeppelin的Andrew B Coathup帮助实现了这一目标。诀窍是将ProxyAdmin和AdminUpgradeabilityProxy的构建工件从npm软件包复制到松露项目中。

cp node_modules/@openzeppelin/upgrades-core/artifacts/* build/contracts

然后松露控制台将能够加载它们，因此您可以像平常一样进行交互：

let proxyAdmin = await ProxyAdmin.at("0x254dffcd3277C0b1660F6d42EFbB754edaBAbC2B")
proxyAdmin.owner()

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