以太坊聯盟鏈quorum搭建（二）
阿新 • • 發佈：2019-01-10
本篇文章介紹通過truffle來部署智慧合約。
1、首先需要有一個聯盟鏈quorum的環境，如上篇文章所示。
2、部署合約，這裡介紹兩種方法，一是教程裡的使用solc編譯，獲取編譯後的abi和bytecode，然後在geth控制檯裡部署；第二種方法是使用truffle直接部署。
下面分別介紹：
（1）使用solc編譯
智慧合約檔案：simplestorage.sol
pragma solidity ^0.4.15; contract simplestorage { uint public storedData; function simplestorage(uint initVal) public { storedData = initVal; } function set(uint x) public { storedData = x; } function get() constant public returns(uint retVal) { return storedData; } }
編譯：
solcjs --bin --abi simplestorage.sol會生成兩個檔案： simplestorage_sol_simplestorage.abi 和 simplestorage_sol_simplestorage.bin分別是abi和bytecode，在部署時會用到。（或者使用線上編譯器remix，更加方便）
然後進入geth客戶端（第一個節點）：
geth attach qdata/dd1/geth.ipc然後在部署合約和呼叫合約：
> var abi = [{"constant":true,"inputs":[],"name":"storedData","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"x","type":"uint256"}],"name":"set","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"retVal","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"initVal","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}] undefined > var bytecode = "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" undefined > var simpleContract = web3.eth.contract(abi); undefined > simpleContract.new(42, {from:web3.eth.accounts[0], data: bytecode, gas: 0x47b760, privateFor: ["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]}) { abi: [{ constant: true, inputs: [], name: "storedData", outputs: [{...}], payable: false, stateMutability: "view", type: "function" }, { constant: false, inputs: [{...}], name: "set", outputs: [], payable: false, stateMutability: "nonpayable", type: "function" }, { constant: true, inputs: [], name: "get", outputs: [{...}], payable: false, stateMutability: "view", type: "function" }, { inputs: [{...}], payable: false, stateMutability: "nonpayable", type: "constructor" }], address: undefined, transactionHash: "0x5c7fc60d8370bed6eb14e3f776365f77806eda9653e6a3f682827f68e056c0f8" }
部署成功，其中simpleContract.new中
privateFor: ["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]}INFO [06-07|19:57:38] Submitted contract creation fullhash=0x5c7fc60d8370bed6eb14e3f776365f77806eda9653e6a3f682827f68e056c0f8 to=0x4D3bfd7821E237fFE84209d8E638f9f309865b87
to後面的地址就是合約的地址，
> var private = eth.contract(abi).at("0x4D3bfd7821E237fFE84209d8E638f9f309865b87")
undefined
> private.get()
42然後節點2呼叫合約，同樣需要地址和abi來載入合約，執行結果：
> private.get()
0節點7執行合約：
> private.get()
42> private.set(65656, {from:eth.coinbase, privateFor:["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]})
"0xb42a5483ef98f6a7b3dc35d7ffaaf0170360de63fb7d14c8514532906fb10395"
> private.get()
65656同樣在節點2和節點7獲取修改的值，結果分別為0和65656
到此，部署和呼叫智慧合約結束。
（2）下面介紹使用truffle來部署智慧合約(這裡使用truffle主要是編譯和部署合約)
新建一個目錄test，然後進入目錄初始化一個truffle專案：
truffle init
然後在contracts目錄中編寫智慧合約：
pragma solidity ^0.4.15;
contract simplestorage {
uint public storedData;
function simplestorage(uint initVal) public {
storedData = initVal;
}
function set(uint x) public {
storedData = x;
}
function get() constant public returns(uint retVal) {
return storedData;
}
}在test目錄下編譯合約：
truffle compile
部署合約：
在migrations資料夾裡新增新的部署檔案：
2_deploy_simplestorage.js
var simple_storage = artifacts.require("SimpleStorage");
module.exports = function(deployer) {
deployer.deploy(simple_storage, 123, {privateFor:["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]});
};修改truffle.js檔案：
module.exports = {
networks: {
development: {
host: "localhost",
port: 22000,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
second_node: {
host: "localhost",
port: 22001,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
third_node: {
host: "localhost",
port: 22002,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
forth_node: {
host: "localhost",
port:22003,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
fifth_node:{
host: "localhost",
port: 22004,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
sixth_node: {
host: "localhost",
port: 22005,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
seventh_node: {
host: "localhost",
port: 22006,
network_id: "*",
gas: 4600000,
gasPrice: 0
}
}
};在test目錄下執行命令：truffle migrate --network development --reset
>truffle migrate --network development --reset
Running migration: 1_initial_migration.js
Replacing Migrations...
... 0x3d22b37608222c33cf2485bbcd746f46979e76e2c31f1be96571098a958f230f
Migrations: 0xd9d64b7dc034fafdba5dc2902875a67b5d586420
Saving successful migration to network...
... 0x7b6d86cadb782c0e41a35f6ebd64dd4650ccb7a7a11f6b07e63df6fcaba2311e
Saving artifacts...
Running migration: 2_deploy_simplestorage.js
Replacing simplestorage...
... 0x43ad5af6cf9276a78febde309b7f214af988797d62fb9ecc71f7a879cbbc6306
simplestorage: 0x938781b9796aea6376e40ca158f67fa89d5d8a18
Saving successful migration to network...
... 0xb9dce27942015a3a93b0f6475cc3ef59b1bc82405b90faaaa4053e8eeb835886
Saving artifacts...其中倒數第四行中是合約的地址。
3、進入geth控制檯
geth attach qdata/dd1/geth.ipc
合約地址和abi載入合約，再呼叫。這裡就和上面方法一樣了，不再重複。