Netkiller Blockchain 手札

本文作者最近在找工作，有意向致电 13113668890

Mr. Neo Chan, 陈景峯(BG7NYT)

中国广东省深圳市龙华新区民治街道溪山美地
518131
+86 13113668890

<netkiller@msn.com>

文档始创于2018-02-10

版权 © 2018 Netkiller(Neo Chan). All rights reserved.

版权声明

转载请与作者联系，转载时请务必标明文章原始出处和作者信息及本声明。

http://www.netkiller.cn http://netkiller.github.io http://netkiller.sourceforge.net

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内容摘要

这一部关于区块链开发及运维的电子书。

为什么会写区块链电子书？因为2018年是区块链年，区块链是一个风口，前几个风口我都错过了。例如web2.0, 云， 大数据等等，都从身旁擦肩而过。所以我要抓住这次。

这本电子书是否会出版（纸质图书）？ 不会，因为互联网技术更迭太快，纸质书籍的内容无法实时更新，一本书动辄百元，很快就成为垃圾，你会发现目前市面的上区块链书籍至少是一年前写的，内容已经过时，很多例子无法正确运行。所以我不会出版，电子书的内容会追逐技术发展，及时跟进软件版本的升级，做到内容最新，至少是主流。

这本电子书与其他区块链书籍有什么不同？市面上大部分区块链书籍都是用2/3去讲区块链原理，只要不到 1/3 的干货，干货不够理论来凑，通篇将理论或是大谈特谈区块链行业，这些内容更多是头脑风暴，展望区块链，均无法落地实施。本书与那些书籍完全不同，不讲理论和原理，面向应用落地，注重例子，均是干货。

写作原则，无法落地的项目作者绝对不会写。凡是写入电子的内容均具备可操作，可落地。

电子书更新频率？每天都会有新内容加入，更新频率最迟不会超过一周，更新内容请关注 https://github.com/netkiller/netkiller.github.io/commits/master

本文采用碎片化写作，原文会不定期更新，请尽量阅读原文。

http://www.netkiller.cn/blockchain/index.html

您的打赏是我的写作动力：http://www.netkiller.cn/blockchain/donations.html

接受 ETH 打赏：0x3e827461Cc53ed7c75A29187CfF39629FCAE3661

8.3.4. 高级ERC20代币合约

安装以太坊geth 客户端 1.8.7

curl -s https://raw.githubusercontent.com/oscm/shell/master/lang/gcc/gcc.sh | bash curl -s https://raw.githubusercontent.com/oscm/shell/master/lang/golang/golang-1.10.2.sh | bash curl -s https://raw.githubusercontent.com/oscm/shell/master/blockchain/ethereum/centos/go-ethereum-1.8.7.sh | bash curl -s https://raw.githubusercontent.com/oscm/shell/master/blockchain/ethereum/systemd/private.sh | bash  curl -s https://raw.githubusercontent.com/oscm/shell/master/lang/node.js/binrary/node-v10.1.0.sh | bash curl -s https://raw.githubusercontent.com/oscm/shell/master/lang/node.js/binrary/profile.d.sh | bash curl -s https://raw.githubusercontent.com/oscm/shell/master/blockchain/ethereum/truffle/truffle.sh | bash

8.3.4.1. 部署合约

解锁账号，查看 gas limit 价格

[ethereum@netkiller ~]$ geth attach Welcome to the Geth JavaScript console!  instance: Geth/v1.8.7-stable/linux-amd64/go1.10.2 coinbase: 0x8232ef29d29f46d3621350ab7097604247ed4830 at block: 2863 (Fri, 11 May 2018 17:16:01 CST)  datadir: /home/ethereum/.ethereum  modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0  > personal.unlockAccount(eth.accounts[0],"12345678",50000) true > web3.eth.getBlock("pending").gasLimit 4712388 > exit

配置 truffle.js

[ethereum@netkiller truffle]$ cat truffle.js module.exports = {   // See <http://truffleframework.com/docs/advanced/configuration>   // to customize your Truffle configuration!    networks: {     development: {       host: "localhost",       port: 8545, 	  gas: 4712388,       network_id: "*" // Match any network id     }   }  };

[ethereum@netkiller truffle]$ truffle compile (node:23256) ExperimentalWarning: The fs.promises API is experimental Compiling ./contracts/NetkillerAdvancedToken.sol... Writing artifacts to ./build/contracts

[ethereum@netkiller truffle]$ truffle migrate (node:23456) ExperimentalWarning: The fs.promises API is experimental Using network 'development'.  Running migration: 1_initial_migration.js   Deploying Migrations...   ... 0xa5937808d9d42dba231738d79d5989e160a2bbc02aa7e8938d0ee71a11eab9a7   Migrations: 0x0f6d790c0ce6453161ead810246602c601f836e7 Saving successful migration to network...   ... 0xabd2d76488caa48eac5b9ad5d662b34a8b41acacb5657ff4f78c5c4530913d2b Saving artifacts... Running migration: 2_initial_token.js   Deploying NetkillerAdvancedToken...   ... 0x190239e85c54aa407ba8dd98357ebabbe2dcab65811f3c4aab7486af27436a09   NetkillerAdvancedToken: 0xb45bd60c48ea18991a5f25a644682d8cf7572ccf Saving successful migration to network...   ... 0x97b9fffef368b2411341d9fed31bd771d0beebe02bde8c19c61a9e0dde0cc773 Saving artifacts...

8.3.4.2. 控制台检查合约

var contract; NetkillerAdvancedTokenAirDrop.deployed().then(function(instance){contract=instance;}); contract.symbol.call().then(console.log); contract.name.call().then(console.log); contract.totalSupply.call().then(console.log); contract.balanceOf.call(web3.eth.accounts[0]).then(console.log);

8.3.4.3. 测试转账

contract.transfer(web3.eth.accounts[1],100).then(function(){contract.balanceOf.call(web3.eth.accounts[1]).then(console.log);});

contract.transferFrom(web3.eth.accounts[0],web3.eth.accounts[1],100).then(function(){contract.balanceOf.call(web3.eth.accounts[1]).then(console.log);});

8.3.4.4. 锁仓

contract.setLock(true); contract.transfer(web3.eth.accounts[2],100).then(function(){contract.balanceOf.call(web3.eth.accounts[2]).then(console.log);});

演示

truffle(development)> contract.setLock(true); { tx: '0x6a603ca9456b574224aa97b8bf1d66280fc8509c94253c0037bc5bb71135a667',   receipt:     { transactionHash: '0x6a603ca9456b574224aa97b8bf1d66280fc8509c94253c0037bc5bb71135a667',      transactionIndex: 0,      blockHash: '0x4e0893b5ff6b1d85182dca0ceb3c0c2cb750183ff856b7ad2e323ad2a3b55fdc',      blockNumber: 13,      gasUsed: 42424,      cumulativeGasUsed: 42424,      contractAddress: null,      logs: [],      status: 1 },   logs: [] } truffle(development)> contract.transfer(web3.eth.accounts[2],100).then(function(){contract.balanceOf.call(web3.eth.accounts[2]).then(console.log);}); Error: VM Exception while processing transaction: revert     at XMLHttpRequest._onHttpResponseEnd (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/xhr2.js:509:1)     at XMLHttpRequest._setReadyState (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/xhr2.js:354:1)     at XMLHttpRequestEventTarget.dispatchEvent (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/xhr2.js:64:1)     at XMLHttpRequest.request.onreadystatechange (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/httpprovider.js:128:1)     at /usr/local/lib/node_modules/truffle/build/webpack:/~/truffle-provider/wrapper.js:134:1     at /usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/requestmanager.js:86:1     at Object.InvalidResponse (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/errors.js:38:1)

解锁后再测试

contract.setLock(false); contract.transfer(web3.eth.accounts[2],100).then(function(){contract.balanceOf.call(web3.eth.accounts[2]).then(console.log);});

truffle(development)> contract.setLock(false); { tx: '0x3d4b8d49626c1171ab7160274a9f573bb06999fa7bc33240704199c7905f62fd',   receipt:     { transactionHash: '0x3d4b8d49626c1171ab7160274a9f573bb06999fa7bc33240704199c7905f62fd',      transactionIndex: 0,      blockHash: '0x0c78b27d817449b6a3727a13041f1880cbf5466a8b81719f2541c08d59ca5fb3',      blockNumber: 15,      gasUsed: 13680,      cumulativeGasUsed: 13680,      contractAddress: null,      logs: [],      status: 1 },   logs: [] } truffle(development)> contract.transfer(web3.eth.accounts[2],100).then(function(){contract.balanceOf.call(web3.eth.accounts[2]).then(console.log);}); undefined truffle(development)> BigNumber { s: 1, e: 2, c: [ 100 ] }

8.3.4.5. 测试空投

[ethereum@netkiller ~]$ geth account new INFO [05-11|17:25:49] Maximum peer count                       ETH=25 LES=0 total=25 Your new account is locked with a password. Please give a password. Do not forget this password. Passphrase: Repeat passphrase: Address: {3c1ba8b80b9a8697f2e34194c2a73a93105be23d}

contract.mintAirdropToken(1000000); contract.totalAirdropSupply.call().then(console.log); contract.totalSupply.call().then(console.log); contract.setAirdrop(10); contract.setAirdropLock(true); contract.balanceOf.call(web3.eth.accounts[3]).then(console.log);  contract.currentTotalAirdrop.call().then(console.log);

操作演示

[ethereum@netkiller ~]$  truffle console       truffle(development)> var contract; NetkillerAdvancedTokenAirDrop.deployed().then(function(instance){contract=instance;});undefined truffle(development)> NetkillerAdvancedTokenAirDrop.deployed().then(function(instance){contract=instance;}); undefined truffle(development)> contract.mintAirdropToken(1000000); { tx: '0xab251fafc30724273259442fc02bfa429235ff14535f4fb25e29bed7de09ea11',   receipt:     { transactionHash: '0xab251fafc30724273259442fc02bfa429235ff14535f4fb25e29bed7de09ea11',      transactionIndex: 0,      blockHash: '0x5498eb579a08e8da1ca2d5ad3d6dd5b0a5c21cc9a630809783d09b65e26929b9',      blockNumber: 28,      gasUsed: 47701,      cumulativeGasUsed: 47701,      contractAddress: null,      logs: [],      status: 1 },   logs: [] } truffle(development)> contract.setAirdrop(10); { tx: '0xd8a3a16328373858e3cc30c7947b3c3c00db447bb3306f2cf2af58fd0215aef8',   receipt:     { transactionHash: '0xd8a3a16328373858e3cc30c7947b3c3c00db447bb3306f2cf2af58fd0215aef8',      transactionIndex: 0,      blockHash: '0x5be96cfd95031a132fc643b06d01dba0b14f736fa9fa3f16dd5bbd9c7f030700',      blockNumber: 29,      gasUsed: 42209,      cumulativeGasUsed: 42209,      contractAddress: null,      logs: [],      status: 1 },   logs: [] } truffle(development)> contract.setAirdropLock(true); { tx: '0x7b8b5747a64111a500cce22371d78b2c3c4ce0b5a2b585b26c0278876044e231',   receipt:     { transactionHash: '0x7b8b5747a64111a500cce22371d78b2c3c4ce0b5a2b585b26c0278876044e231',      transactionIndex: 0,      blockHash: '0xd6960add791b36afac1126a00af16f2833043dcb3416d68bb4056db64313dc93',      blockNumber: 30,      gasUsed: 42408,      cumulativeGasUsed: 42408,      contractAddress: null,      logs: [],      status: 1 },   logs: [] } truffle(development)> contract.balanceOf.call(web3.eth.accounts[5]).then(console.log); BigNumber { s: 1, e: 1, c: [ 10 ] } undefined

本文作者最近在找工作，有意向致电 13113668890

接受 ETH 打赏：0x3e827461Cc53ed7c75A29187CfF39629FCAE3661