英文:
When I use golang call the contract method,how can I confirm this trx status?
问题
我将为您翻译以下内容：
我将代币铸造到我的账户，并返回交易哈希，但我想知道这个哈希的状态。就像JavaScript可以使用回调函数等待此交易完成一样。
var promise = await token.mint("my account", 1)
console.log(promise.transactionHash)
Golang代码：
transaction, err := erc721.Mint(trx, common.HexToAddress("my account"), big.NewInt(int64(i)))
if err != nil {
fmt.Println(err)
}
fmt.Println(transaction.Hash().String())
英文:
I mint the token to my account and it return transaction hash ,but I wnat to now this hash status .Like js can use callback function to wait this trx finished
var promise = await token.mint("my account",1)
console.log(promise.transactionHash)
golang
transaction, err := erc721.Mint(trx, common.HexToAddress("my account"), big.NewInt(int64(i)))
if err != nil {
fmt.Println(err)
}
fmt.Println(transaction.Hash().String())
答案1
得分: 0
根据评论中提到的，你需要监听事件日志（最好筛选出你的地址），并在确认后调用收据。
注意：这个示例只是为了演示必要的步骤。
func waitForReceipt(c *ethclient.Client, hash, addr string) (*types.Receipt, error) {
query := ethereum.FilterQuery{
Addresses: []common.Address{addr},
}
var ch = make(chan types.Log)
sub, err := c.SubscribeFilterLogs(ctx, query, ch) // 订阅地址的所有日志
if err != nil {
return nil, err
}
for confirmed := false; !confirmed; { // 等待区块链上的确认
select {
case err := <-sub.Err():
return nil, err
case vLog := <-ch:
if vLog.TxHash.Hex() == hash {
confirmed = true
}
}
}
return c.TransactionReceipt(ctx, hash) // 调用收据
}
英文:
As mentioned in comment, you have to listen for event logs (preferably filtered for your address), and call for receipt after confirmation.
NOTE: Example is just to demonstrate necessary steps.
func waitForReceipt(c *ethclient.Client, hash, addr string) (*types.Receipt, error) {
query := ethereum.FilterQuery{
Addresses: []common.Address{addr},
}
var ch = make(chan types.Log)
sub, err := c.SubscribeFilterLogs(ctx, query, ch) // subscribe to all logs for addr
if err != nil {
return nil, err
}
for confirmed := false; !confirmed; { // wait for confirmation on blockchain
select {
case err := <-sub.Err():
return nil, err
case vLog := <-ch:
if vLog.TxHash.Hex() == hash {
confirmed = true
}
}
}
return c.TransactionReceipt(ctx, hash) // call for receipt
}
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