以太坊系列之二十一 使用web3部署比較復(fù)雜的智能合約 搭建私鏈上的雷電網(wǎng)絡(luò)

• 以太坊系列之二十一 使用web3部署比較復(fù)雜的智能合約
  • 1 雷電網(wǎng)絡(luò)智能合約簡單介紹
  • 2 remix 無法部署使用了library的contract
  • 3 使用web3部署完整的雷電網(wǎng)絡(luò)合約
    • 3.1 部署NettingChannelLibrary.sol
    • 3.2 部署ChannelManagerLibrary
    • 3.3 部署EndpointRegistry.sol

前面博文中已經(jīng)有一篇介紹如何使用web3部署智能合約了,但是針對比較復(fù)雜的智能合約那種方式就不行了.
實(shí)際上這篇文章的起因是因?yàn)榇蛩阊芯坷纂娋W(wǎng)絡(luò),就想在自己的私鏈上部署一個(gè)雷電網(wǎng)絡(luò)的合約.結(jié)果發(fā)現(xiàn)居然很多問題.

1 雷電網(wǎng)絡(luò)智能合約簡單介紹

雷電網(wǎng)絡(luò)要正常工作必須借助兩個(gè)事先部署在區(qū)塊鏈上的合約才能正常工作,具體來說就是registry和endpointregistry.如果去查看雷電網(wǎng)絡(luò)的代碼可以看到這兩個(gè)合約地址是事先寫好在代碼中的.這兩個(gè)合約比較復(fù)雜,尤其是registry.sol,依賴復(fù)雜.我們主要來看幾個(gè)主要文件之間的依賴關(guān)系: Registry.sol<---ChannelManagerContract.sol<-----ChannelManagerLibrary.sol<-------NettingChannelContract.sol<------NettingChannelLibrary.sol 中間名字里面有Library的,這些文件是library而不是contract,所以在solc編譯的時(shí)候是不會編譯進(jìn)生成的二進(jìn)制code中,必須先部署library,然后在對其進(jìn)行l(wèi)ink. 比如:Registry.sol<---ChannelManagerContract.sol<-----ChannelManagerLibrary.sol 那么在生成Registry.sol的code時(shí),里面不會包含ChannelManagerLibrary.sol的代碼,只會包含ChannelManagerContract.sol.的代碼.這有點(diǎn)類似于前者是動態(tài)鏈接,而后者是靜態(tài)鏈接.附上remix生成的registry的bin code,里面包含了一些字符串__localhost/ChannelManagerLibrary.sol:__,這明顯是錯(cuò)誤的,這實(shí)際上是需要替換成ChannelManagerLibrary部署后的地址才能正常工作. 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2 remix 無法部署使用了library的contract

網(wǎng)上也找了相關(guān)的文章看了看,總的來說就是因?yàn)槿绻粋€(gè)contract使用了library(注意不是import 其他sol),那么編譯生成的二進(jìn)制code是不完整的,必須進(jìn)行l(wèi)ink,目前remix (solidity IDE)是不支持的,所以只能繞過.
比如在部署registry.sol時(shí),具體報(bào)錯(cuò):

Error deploying required libraries: Library localhost/ChannelManagerLibrary.sol: not found

3 使用web3部署完整的雷電網(wǎng)絡(luò)合約

3.1 部署NettingChannelLibrary.sol

這是依賴的最底層,必須先部署.部署代碼和以前的類似,直接給出完整代碼: //參考文章:http://web3js.readthedocs.io/en/1.0/web3-eth-contract.html#eth-contract var Web3 = require('web3'); console.log("Web3 Version:",Web3.version); //version 1.0 以下代碼只在此版本測試,更早版本確定不行 var net = require('net'); var web3 = new Web3(new Web3.providers.IpcProvider("\\\\.\\pipe\\geth.ipc",net)); var eth=web3.eth; deployNettingChannelLibraryContract() function deployNettingChannelLibraryContract(){var nettingchannellibraryContract =new web3.eth.Contract([{"constant":false,/*忽略*/}]);nettingchannellibraryContract.deploy({data: '0x60606040523.....', }).send({from: "0x1a9ec3b0b807464e6d3398a59d6b0a369bf422fa",gas: 15000000,gasPrice: '30000000000000'}, function(error, transactionHash){ }).on('error', function(error){ console.log('deploy error')}).on('transactionHash', function(transactionHash){ }).on('receipt', function(receipt){//console.log(receipt.contractAddress) // contains the new contract address}).on('confirmation', function(confirmationNumber, receipt){ }).then(function(newContractInstance){console.log("nettingchannellibraryContract",newContractInstance.options.address) // instance with the new contract addressdeployChannelManagerLibrary(newContractInstance.options.address)}); }

后面的deployChannelManagerLibrary調(diào)用就是說部署NettingChannelLibraryContract成功以后,再去部署上一層的ChannelManagerLibrary

3.2 部署ChannelManagerLibrary

部署ChannelManagerLibrary的關(guān)鍵是要知道NettingChannelLibraryContract在區(qū)塊鏈上的地址 所以必須要先對其二進(jìn)制code進(jìn)行替換處理. var data='0x606060405234156105b...73__localhost/NettingChannelLibrary.sol:__63d...29'data=data.replace(/__localhost\/NettingChannelLibrary.sol:__/g,nettingChannelLibraryAddress.replace("0x",""))channelManagerLibraryContract.deploy({data:data, })

然后才能進(jìn)行部署,否則會說code中的__localhost/NettingChannelLibrary.sol不是hex編碼的字符串

完整的代碼,為了湊字?jǐn)?shù)...,由于部署registry的思路是一致的,就直接放到一起了.

function deployChannelManagerLibrary(nettingChannelLibraryAddress) {var data='0x606060....29'data=data.replace(/__localhost\/NettingChannelLibrary.sol:__/g,nettingChannelLibraryAddress.replace("0x",""))//console.log("after replace data:",data)var channelManagerLibraryContract =new web3.eth.Contract([{"constant":false,/*忽略*/}]);channelManagerLibraryContract.deploy({data:data, }).send({from: "0x1a9ec3b0b807464e6d3398a59d6b0a369bf422fa",gas: 15000000,gasPrice: '30000000000000'}, function(error, transactionHash){ }).on('error', function(error){ console.log('deploy channelManagerLibraryContract error')}).then(function(newContractInstance){console.log("channelManagerLibraryContract",newContractInstance.options.address) // instance with the new contract addressdeployRegistry(newContractInstance.options.address)}); }function deployRegistry(channelManagerLibraryAddress) {var data='0x6060604....29'data=data.replace(/__localhost\/ChannelManagerLibrary.sol:__/g,channelManagerLibraryAddress.replace("0x",""))//console.log("after replace data:",data)var registryContract =new web3.eth.Contract([{"constant":true,/*忽略*/}]);registryContract.deploy({data:data, }).send({from: "0x1a9ec3b0b807464e6d3398a59d6b0a369bf422fa",gas: 15000000,gasPrice: '30000000000000'}, function(error, transactionHash){ }).on('error', function(error){ console.log('deploy registryContract error')}).then(function(newContractInstance){console.log("registryContract",newContractInstance.options.address) // instance with the new contract address}); }

3.3 部署EndpointRegistry.sol

直接部署,和3.1 部署NettingChannelLibrary.sol中介紹一致,不再贅述.

3.4 完整運(yùn)行結(jié)果

node deployregistry.js Web3 Version: 1.0.0-beta.26 endPointRegistryContract: 0x7eA46670E6A75180e355F9b8fb7501d9618b6D7E nettingchannellibraryContract 0xCeFE92604e376C99568eb951106c8ADCE9D184eF channelManagerLibraryContract 0x15659CeC0602e76EC8e8d5325c2D7a0b4f63f86d registryContract 0x46c9D962c6D5CDc69cF2A7617432eDe2c99a5255

拿到地址,就可以將源碼中相應(yīng)地址進(jìn)行替換,這樣就是一個(gè)你自己的雷電網(wǎng)絡(luò)了.

總結(jié)

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