getTransaction

指定 Hash 呈現區塊交易的訊息

訊息雖然很混亂看久大概就那幾個欄位

import { createPublicClient, http } from 'viem';
import { mainnet } from 'viem/chains';

const publicClient = createPublicClient({
	chain: mainnet,
	transport: http(),
});

const transaction = await publicClient.getTransaction({
	hash: '0xbc710a5f44f69da808bb1c6adf3e70fa9d8ed69d08282912de72bb34042c6a70',
});
console.log('transaction', transaction);
/*transaction {
	type: 'eip1559',
	blockHash: '0x16c60fa71bd501b8706bfc610926abd2f3f3ab518eb217098b78e0ce0f532ae2',
	blockNumber: 18075787n,
	from: '0xa6a688f107851131f0e1dce493ebbebfaf99203e',
	gas: 242465n,
	hash: '0xbc710a5f44f69da808bb1c6adf3e70fa9d8ed69d08282912de72bb34042c6a70',
	input: '0x8d8798bfd69c275e3c033d90dccaba886790e04c96863d6651183f247690a2d4ffc474e0000000000000000000000000000000000000000000000000000000000000a4b10000000000000000000000000000000000000000000000000000000c2a99a8bb',
	nonce: 84927,
	to: '0x3666f603cc164936c1b87e207f36beba4ac5f18a',
	transactionIndex: 578,
	value: 0n,
	v: 0n,
	r: '0x321b72181bf9f048d239e4e921f1d6cdd7313a186af2901f4f08c95fbf87b83',
	s: '0x46040761ba278c59c642eb476214fde749014448f2430593a4a571ce247659ce',
	gasPrice: 10520166418n,
	maxFeePerGas: 22573977776n,
	maxPriorityFeePerGas: 90000000n,
	chainId: 1,
	accessList: [],
	typeHex: '0x2'
  }*/

getTransaction 獲得交易區塊結果

const transactionReceipt = await publicClient.getTransactionReceipt({
	hash: '0xbc710a5f44f69da808bb1c6adf3e70fa9d8ed69d08282912de72bb34042c6a70',
});

getTransactionConfirmations 確定這個交易有多的 block 來完成

const confirmations = await publicClient.getTransactionConfirmations({
	transactionReceipt,
});

這裡我們先下一個小節

對於區塊鏈的交易其實不是即時的，每個交易都是需要礦工打包的所以會有等待的時間，我們寫程式時，大概可以有這樣的想法 TxHash → TransactionReceipt → check OK → Transaction OK!

而有些交易就是特別大，不能立刻回應官方也很貼心的出了另外的 function

waitForTransactionReceip 等待確認交易完成

const waitTransaction = await publicClient.waitForTransactionReceipt({
	confirmations: 5, // 確認幾次
	hash: '0x4ca7ee652d57678f26e887c149ab0735f41de37bcad58c9f6d3ed5824f15b74d',
	// timeout: 60_000,  // time out 毫秒
	// pollingInterval: 12_000 // 輪詢毫秒
	// onReplaced: replacement => console.log(replacement)  如果你的設定都會的話，因該是不用這個，交易有狀況時才需要
});

這裡對 onReplaced 官方有說明

• repriced: Gas 費用被修改，與 maxFeePerGas 不同
• cancelled: 交易已取消 ，如( Value ==== 0n)
• replaced: 交易已被取代 (value or data 不同)

watchPendingTransactions 待處理的交易

這個我用比較少但是就是監控還沒完成的交易可以用這個

程式實作：
https://github.com/0xRory/ITHepleViem/blob/main/examples/3_7_1_Transaction.js

參考：

https://viem.sh/docs/actions/public/getTransaction.html

https://viem.sh/docs/actions/public/getTransactionConfirmations.html

https://viem.sh/docs/actions/public/getTransactionReceipt.html

https://viem.sh/docs/actions/public/waitForTransactionReceipt.html

https://viem.sh/docs/actions/public/watchPendingTransactions.html