在以太坊模擬鏈及私鏈上編譯、部署智能合約

時間 2019-11-12

標籤以太模擬編譯部署智能合約简体版

原文原文鏈接

如需轉載請註明出處https://my.oschina.net/feistel/blog/3007913web

1.part6爲在Remix上編譯測試Solidity編寫的智能合約
2.part7爲在用geth搭建的私鏈上部署合約
3.其餘部分介紹在ganache-cli模擬鏈上用truffle編譯、部署、調用shell

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1跨域

圖形界面版本地測試鏈ganache-cli
https://truffleframework.com/ganache
用於模擬以太坊區塊鏈生態，包括有曠工在挖礦，保證成功部署到測試鏈上，能夠在該鏈上測試發佈智能合約瀏覽器

（注意：ganache關閉後，節點服務的數據也會被清空）服務器

----------------------------------------------------------------------------------------------------------------網絡

2cors

pragma solidity >=0.4.21 <0.6.0;dom

contract Migrations {
address public owner;
uint public last_completed_migration;ide

constructor() public {
owner = msg.sender;
}

modifier restricted() {
if (msg.sender == owner) _;
}

function setCompleted(uint completed) public restricted {
last_completed_migration = completed;
}

function upgrade(address new_address) public restricted {
Migrations upgraded = Migrations(new_address);
upgraded.setCompleted(last_completed_migration);
}

function getOwner() view public returns (address) {
return owner;
}
}

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//構建新項目
truffle init
建立part2的Solidity合約代碼

//編譯，自動編譯contracts文件夾下sol文件
truffle compile (--all 強制從新編譯全部文件) （--network name，指定使用的網絡）

//配置truffle-config.js文件
修改：
development: {
host: "127.0.0.1", // Localhost (default: none)
port: 7545, // Standard Ethereum port (default: none)
network_id: "*", // Any network (default: none)
}

//部署到區塊鏈上，保證模擬的區塊鏈客戶端ganache在運行
//truffle會鏈接到上述區塊鏈網絡中，進行編譯
truffle migrate （--reset 表示強制從新部署）

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PS E:\@2019\truffle\test> truffle migrate
⚠️ Important ⚠️
If you're using an HDWalletProvider, it must be Web3 1.0 enabled or your migration will hang.

Starting migrations...
======================
> Network name: 'development'
> Network id: 5777
> Block gas limit: 6721975

1_initial_migration.js
======================

Deploying 'Migrations'
----------------------
> transaction hash: 0xecf11deb00bf225021fda820ba1f73ba111d372cdcd8cb485fb1033bbc914e54
> Blocks: 0 Seconds: 0
> contract address: 0x77D4F14109d81Dc1d700F9C8A6E9475Fb783D4e9
> account: 0xf0f6e21B63D0c9eF5A5C6f3E3c3272ABdBC5815E
> balance: 99.99430184
> gas used: 284908
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00569816 ETH

> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.00569816 ETH

Summary
=======
> Total deployments: 1
> Final cost: 0.00569816 ETH

注:
gas used:284908
gas price:20 gwei
284908 * 20 = 5698160 gwei
5698160 / 1 000 000 000 = 0.005698160 eth
所以，total cost:0.005698160 eth

contract address，合約地址
account，合約帳戶

----------------------------------------------------------------------------------------------------------------

與智能合約交互

//進入Truffle控制檯，須要在項目文件夾下
//可使用命令與geth相似，web3
truffle console

//將合約實例賦給instance

let accounts = await web3.eth.getAccounts()
accounts
[ '0xf0f6e21B63D0c9eF5A5C6f3E3c3272ABdBC5815E',
'0x21123d9E48693c7656B904B82e11e2Fa77D09F41',
'0xd58bcc4Fbb5961FC7E96809B07c9e481981351D2',
'0x225a3aa18c95e291A14fA25fee51dB6Ce87c1eb4',
'0x40c8086a4AB47f547B452fF4C3651ab54F1d41Fb',
'0x0Ce8832b9e9bD099CA0C5aC90cd0712e286B6C39',
'0xBdF920b656ef5819C312F7575B26ebC035C30520',
'0x697798292C73F3DfF1E9B9c9eE2A09dc0A4810b4',
'0x5364d1566C10382E2880123989f006D9AAf4Fea5',
'0xaCC3e08a27B56436bb4684B3d633d16f9e2456d2' ]

//建立合約實例，以{from: accounts[0]}設爲調用者
let instance = await Migrations.deployed({from: accounts[0]})

//查看狀態變量Owner
instance.getOwner()
'0xf0f6e21B63D0c9eF5A5C6f3E3c3272ABdBC5815E'

instance.setCompleted(1,{from: accounts[0]})
instance.upgrade(accounts[1],{from: accounts[0]})

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使用在線工具，能夠直接編譯，點擊函數進行調用，自動部署到測試鏈上，無需關心測試鏈，只須要專心測試智能合約代碼
http://remix.ethereum.org/

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在本身建立的以太坊本地區塊鏈私鏈上（用geth建立的），發佈智能合約

//啓動以太坊節點
geth --identity "newEth" --rpc --rpccorsdomain "*" --datadir .\data\ --port 30303 --rpcapi "db,eth,net,web3" --networkid 10 console
--identity，自定義節點名
--rpc，啓用HTTP-RPC服務器
--rpccorsdomain，容許跨域請求的域名列表(逗號分隔)(瀏覽器強制)
--rpcapi，基於HTTP-RPC接口提供的API
--networkid，網絡標識符(整型, 1=Frontier, 2=Morden (棄用), 3=Ropsten, 4=Rinkeby) (默認: 1)
保持啓動該節點的shell運行，下面操做在truffle項目另開shell窗口。
注：建立以太坊私鏈節點參考以太坊又是啥？ part7
https://my.oschina.net/feistel/blog/3007768

用truffle部署前先配置truffle-config.js文件，如part3所示
development: {
host: "127.0.0.1", // Localhost (default: none)
port: 8545, // Standard Ethereum port (default: none)
network_id: "*", // Any network (default: none)
from: "0x5586fd7bb8b81992526bbf6bf707f0eba9ab3c7a",
gas: 4712387
}
注：1.須要指定部署合約的地址from，該地址是在私鏈節點上建立的，而且須要解鎖
2.須要指定gas

//接着
truffle compile
truffle migrate

便可部署到私鏈上。

//若是節點沒有開始挖礦嗎，在節點shell上，能夠看到有一個待確認交易在交易池中
txpool.status
{
pending: 1,
queued: 0
}

//讓節點開始挖礦
miner.start(1)

要調用合約，回到part5

其中在truffle看到以下：
⚠️ Important ⚠️
If you're using an HDWalletProvider, it must be Web3 1.0 enabled or your migration will hang.

Starting migrations...
======================
> Network name: 'development'
> Network id: 10
> Block gas limit: 4712388

1_initial_migration.js
======================

Deploying 'Migrations'
----------------------
> transaction hash: 0x097f821a5cf84410a0c16d4987f86df061b154413e05d3efb0d5b55a3ea35732
> Blocks: 0 Seconds: 0
> contract address: 0xA920f6F9Aa3993e8cf11f70D3e3c581671B173e6
> account: 0x5586fd7bb8b81992526BbF6bf707F0eba9ab3C7a
> balance: 114.99242616
> gas used: 321992
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00643984 ETH

> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.00643984 ETH

Summary
=======
> Total deployments: 1
> Final cost: 0.00643984 ETH

如需轉載請註明出處https://my.oschina.net/feistel/blog/3007913