在以太坊模拟链及私链上编译、部署智能合约

时间 2019-11-12

标签以太模拟编译部署智能合约繁體版

原文原文链接

如需转载请注明出处https://my.oschina.net/feistel/blog/3007913web

1.part6为在Remix上编译测试Solidity编写的智能合约
2.part7为在用geth搭建的私链上部署合约
3.其余部分介绍在ganache-cli模拟链上用truffle编译、部署、调用shell

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1跨域

图形界面版本地测试链ganache-cli
https://truffleframework.com/ganache
用于模拟以太坊区块链生态，包括有旷工在挖矿，保证成功部署到测试链上，能够在该链上测试发布智能合约浏览器

（注意：ganache关闭后，节点服务的数据也会被清空）服务器

----------------------------------------------------------------------------------------------------------------网络

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;
}
}

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

//构建新项目
truffle init
建立part2的Solidity合约代码

//编译，自动编译contracts文件夹下sol文件
truffle compile (--all 强制从新编译全部文件) （--network name，指定使用的网络）

//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)
}

//部署到区块链上，保证模拟的区块链客户端ganache在运行
//truffle会链接到上述区块链网络中，进行编译
truffle migrate （--reset 表示强制从新部署）

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

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，合约地址
account，合约帐户

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

与智能合约交互

//进入Truffle控制台，须要在项目文件夹下
//可使用命令与geth相似，web3
truffle console

//将合约实例赋给instance

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

//建立合约实例，以{from: accounts[0]}设为调用者
let instance = await Migrations.deployed({from: accounts[0]})

//查看状态变量Owner
instance.getOwner()
'0xf0f6e21B63D0c9eF5A5C6f3E3c3272ABdBC5815E'

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

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使用在线工具，能够直接编译，点击函数进行调用，自动部署到测试链上，无需关心测试链，只须要专心测试智能合约代码
http://remix.ethereum.org/

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

在本身建立的以太坊本地区块链私链上（用geth建立的），发布智能合约

//启动以太坊节点
geth --identity "newEth" --rpc --rpccorsdomain "*" --datadir .\data\ --port 30303 --rpcapi "db,eth,net,web3" --networkid 10 console
--identity，自定义节点名
--rpc，启用HTTP-RPC服务器
--rpccorsdomain，容许跨域请求的域名列表(逗号分隔)(浏览器强制)
--rpcapi，基于HTTP-RPC接口提供的API
--networkid，网络标识符(整型, 1=Frontier, 2=Morden (弃用), 3=Ropsten, 4=Rinkeby) (默认: 1)
保持启动该节点的shell运行，下面操做在truffle项目另开shell窗口。
注：建立以太坊私链节点参考以太坊又是啥？ 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.须要指定部署合约的地址from，该地址是在私链节点上建立的，而且须要解锁
2.须要指定gas

//接着
truffle compile
truffle migrate

便可部署到私链上。

//若是节点没有开始挖矿吗，在节点shell上，能够看到有一个待确认交易在交易池中
txpool.status
{
pending: 1,
queued: 0
}

//让节点开始挖矿
miner.start(1)

要调用合约，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

如需转载请注明出处https://my.oschina.net/feistel/blog/3007913