github.com/codysnider/go-ethereum@v1.10.18-0.20220420071915-14f4ae99222a/eth/tracers/tracers_test.go (about)

     1  // Copyright 2017 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 tracers
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  
    23  	"github.com/ethereum/go-ethereum/common"
    24  	"github.com/ethereum/go-ethereum/common/hexutil"
    25  	"github.com/ethereum/go-ethereum/core"
    26  	"github.com/ethereum/go-ethereum/core/rawdb"
    27  	"github.com/ethereum/go-ethereum/core/types"
    28  	"github.com/ethereum/go-ethereum/core/vm"
    29  	"github.com/ethereum/go-ethereum/crypto"
    30  	"github.com/ethereum/go-ethereum/eth/tracers/logger"
    31  	"github.com/ethereum/go-ethereum/params"
    32  	"github.com/ethereum/go-ethereum/tests"
    33  )
    34  
    35  // callTrace is the result of a callTracer run.
    36  type callTrace struct {
    37  	Type    string          `json:"type"`
    38  	From    common.Address  `json:"from"`
    39  	To      common.Address  `json:"to"`
    40  	Input   hexutil.Bytes   `json:"input"`
    41  	Output  hexutil.Bytes   `json:"output"`
    42  	Gas     *hexutil.Uint64 `json:"gas,omitempty"`
    43  	GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
    44  	Value   *hexutil.Big    `json:"value,omitempty"`
    45  	Error   string          `json:"error,omitempty"`
    46  	Calls   []callTrace     `json:"calls,omitempty"`
    47  }
    48  
    49  func BenchmarkTransactionTrace(b *testing.B) {
    50  	key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
    51  	from := crypto.PubkeyToAddress(key.PublicKey)
    52  	gas := uint64(1000000) // 1M gas
    53  	to := common.HexToAddress("0x00000000000000000000000000000000deadbeef")
    54  	signer := types.LatestSignerForChainID(big.NewInt(1337))
    55  	tx, err := types.SignNewTx(key, signer,
    56  		&types.LegacyTx{
    57  			Nonce:    1,
    58  			GasPrice: big.NewInt(500),
    59  			Gas:      gas,
    60  			To:       &to,
    61  		})
    62  	if err != nil {
    63  		b.Fatal(err)
    64  	}
    65  	txContext := vm.TxContext{
    66  		Origin:   from,
    67  		GasPrice: tx.GasPrice(),
    68  	}
    69  	context := vm.BlockContext{
    70  		CanTransfer: core.CanTransfer,
    71  		Transfer:    core.Transfer,
    72  		Coinbase:    common.Address{},
    73  		BlockNumber: new(big.Int).SetUint64(uint64(5)),
    74  		Time:        new(big.Int).SetUint64(uint64(5)),
    75  		Difficulty:  big.NewInt(0xffffffff),
    76  		GasLimit:    gas,
    77  		BaseFee:     big.NewInt(8),
    78  	}
    79  	alloc := core.GenesisAlloc{}
    80  	// The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns
    81  	// the address
    82  	loop := []byte{
    83  		byte(vm.JUMPDEST), //  [ count ]
    84  		byte(vm.PUSH1), 0, // jumpdestination
    85  		byte(vm.JUMP),
    86  	}
    87  	alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{
    88  		Nonce:   1,
    89  		Code:    loop,
    90  		Balance: big.NewInt(1),
    91  	}
    92  	alloc[from] = core.GenesisAccount{
    93  		Nonce:   1,
    94  		Code:    []byte{},
    95  		Balance: big.NewInt(500000000000000),
    96  	}
    97  	_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false)
    98  	// Create the tracer, the EVM environment and run it
    99  	tracer := logger.NewStructLogger(&logger.Config{
   100  		Debug: false,
   101  		//DisableStorage: true,
   102  		//EnableMemory: false,
   103  		//EnableReturnData: false,
   104  	})
   105  	evm := vm.NewEVM(context, txContext, statedb, params.AllEthashProtocolChanges, vm.Config{Debug: true, Tracer: tracer})
   106  	msg, err := tx.AsMessage(signer, nil)
   107  	if err != nil {
   108  		b.Fatalf("failed to prepare transaction for tracing: %v", err)
   109  	}
   110  	b.ResetTimer()
   111  	b.ReportAllocs()
   112  
   113  	for i := 0; i < b.N; i++ {
   114  		snap := statedb.Snapshot()
   115  		st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
   116  		_, err = st.TransitionDb()
   117  		if err != nil {
   118  			b.Fatal(err)
   119  		}
   120  		statedb.RevertToSnapshot(snap)
   121  		if have, want := len(tracer.StructLogs()), 244752; have != want {
   122  			b.Fatalf("trace wrong, want %d steps, have %d", want, have)
   123  		}
   124  		tracer.Reset()
   125  	}
   126  }