github.com/ethxdao/go-ethereum@v0.0.0-20221218102228-5ae34a9cc189/accounts/abi/bind/util.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package bind
    18  
    19  import (
    20  	"context"
    21  	"errors"
    22  	"time"
    23  
    24  	"github.com/ethxdao/go-ethereum/common"
    25  	"github.com/ethxdao/go-ethereum/core/types"
    26  	"github.com/ethxdao/go-ethereum/log"
    27  )
    28  
    29  // WaitMined waits for tx to be mined on the blockchain.
    30  // It stops waiting when the context is canceled.
    31  func WaitMined(ctx context.Context, b DeployBackend, tx *types.Transaction) (*types.Receipt, error) {
    32  	queryTicker := time.NewTicker(time.Second)
    33  	defer queryTicker.Stop()
    34  
    35  	logger := log.New("hash", tx.Hash())
    36  	for {
    37  		receipt, err := b.TransactionReceipt(ctx, tx.Hash())
    38  		if err == nil {
    39  			return receipt, nil
    40  		}
    41  
    42  		if errors.Is(err, ethereum.NotFound) {
    43  			logger.Trace("Transaction not yet mined")
    44  		} else {
    45  			logger.Trace("Receipt retrieval failed", "err", err)
    46  		}
    47  
    48  		// Wait for the next round.
    49  		select {
    50  		case <-ctx.Done():
    51  			return nil, ctx.Err()
    52  		case <-queryTicker.C:
    53  		}
    54  	}
    55  }
    56  
    57  // WaitDeployed waits for a contract deployment transaction and returns the on-chain
    58  // contract address when it is mined. It stops waiting when ctx is canceled.
    59  func WaitDeployed(ctx context.Context, b DeployBackend, tx *types.Transaction) (common.Address, error) {
    60  	if tx.To() != nil {
    61  		return common.Address{}, errors.New("tx is not contract creation")
    62  	}
    63  	receipt, err := WaitMined(ctx, b, tx)
    64  	if err != nil {
    65  		return common.Address{}, err
    66  	}
    67  	if receipt.ContractAddress == (common.Address{}) {
    68  		return common.Address{}, errors.New("zero address")
    69  	}
    70  	// Check that code has indeed been deployed at the address.
    71  	// This matters on pre-Homestead chains: OOG in the constructor
    72  	// could leave an empty account behind.
    73  	code, err := b.CodeAt(ctx, receipt.ContractAddress, nil)
    74  	if err == nil && len(code) == 0 {
    75  		err = ErrNoCodeAfterDeploy
    76  	}
    77  	return receipt.ContractAddress, err
    78  }