ローカルネットにおけるNFTの発行：Solファイルのコンパイルとデプロイ

次はSolidityファイルをコンパイルしていきます。truffle compileで実行。おわりです。

$ truffle compile
> Compiling your contracts…
> Compiling ./contracts/Migrations.sol
> Compiling ./contracts/tbfToken.sol
> Compiling ./node_modules/@openzeppelin/contracts/token/ERC721/ERC721.sol
> Compiling ./node_modules/@openzeppelin/contracts/token/ERC721/IERC721.sol
> Compiling ./node_modules/@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
> Compiling ./node_modules/@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
> Compiling ./node_modules/@openzeppelin/contracts/utils/Address.sol
> Compiling ./node_modules/@openzeppelin/contracts/utils/Context.sol
> Compiling ./node_modules/@openzeppelin/contracts/utils/Strings.sol
> Compiling ./node_modules/@openzeppelin/contracts/utils/introspection/ERC165.sol
> Compiling ./node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol
> Artifacts written to /Users/takumina/Ethereum/tbftoken/build/contracts
> Compiled successfully using:
  - solc: 0.8.0+commit.c7dfd78e.Emscripten.clang    

　さっき作ったtbfToken.solをdeployしてきましょう。Migrationは以下のファイルを作成します。

中身はこんな感じ。

// migrations/2_deploy.js
const tbfToken = artifacts.require("tbfToken");

module.exports = async function (deployer) {
  await deployer.deploy(tbfToken);
};

準備できたら、truffle migrateを実施していきます。

$ truffle migrate --network development

Compiling your contracts…
================================
>Everything is up to date, there is nothing to compile. 
 

Starting migrations…
================================
>Network name:    'development'
>Network id:      5777
>Block gas limit: 6721975 (0x6691b7) 

2_deploy.js
================================

 Deploying 'tbfToken'
 --------------------- 
  >transaction hash:    0x7267bf8cdbe325f81312f8d0547ba19a6b24ea8011dc31469f78a7674ce0d133
  >Blocks: 0            Seconds: 0
  >contract address:    0x86C0d4D44F6ec22D151b1b7A344E830020323C0a
  >block number:        3
  >block timestamp:     1623477137
  >account:             0x83eFcE6f3C6347D360B67bBDd842c26c855bA850
  >balance:             99.95383938
  >gas used:            2021218 (0x1ed762)
  >gas price:           20 gwei
  >value sent:          0 ETH
  >total cost:          0.04042436 ETH
   
  >Saving migration to chain.
  >Saving artifacts
 --------------------- 
  >Total cost:          0.04042436 ETH 
 
Summary
==========
  >Total deployments:   1
  >Final cost:          0.04042436 ETH 

無事完了するとGanacheの一番目（INDEX0）のBALANCEが減っていることがわかります。