You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.9 KiB
91 lines
2.9 KiB
// Copyright 2017 The go-ethereum Authors
|
|
// This file is part of go-ethereum.
|
|
//
|
|
// go-ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// go-ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package vm
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io"
|
|
"math/big"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/math"
|
|
)
|
|
|
|
// JSONLogger ...
|
|
type JSONLogger struct {
|
|
encoder *json.Encoder
|
|
cfg *LogConfig
|
|
}
|
|
|
|
// NewJSONLogger creates a new EVM tracer that prints execution steps as JSON objects
|
|
// into the provided stream.
|
|
func NewJSONLogger(cfg *LogConfig, writer io.Writer) *JSONLogger {
|
|
l := &JSONLogger{json.NewEncoder(writer), cfg}
|
|
if l.cfg == nil {
|
|
l.cfg = &LogConfig{}
|
|
}
|
|
return l
|
|
}
|
|
|
|
// CaptureStart ...
|
|
func (l *JSONLogger) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error {
|
|
return nil
|
|
}
|
|
|
|
// CaptureState outputs state information on the logger.
|
|
func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
|
|
log := StructLog{
|
|
Pc: pc,
|
|
Op: op,
|
|
ContractAddress: contract.Address(),
|
|
CallerAddress: contract.CallerAddress,
|
|
Gas: gas,
|
|
GasCost: cost,
|
|
MemorySize: memory.Len(),
|
|
Storage: nil,
|
|
Depth: depth,
|
|
RefundCounter: env.StateDB.GetRefund(),
|
|
Err: err,
|
|
}
|
|
if !l.cfg.DisableMemory {
|
|
log.Memory = memory.Data()
|
|
}
|
|
if !l.cfg.DisableStack {
|
|
log.Stack = stack.Data()
|
|
}
|
|
return l.encoder.Encode(log)
|
|
}
|
|
|
|
// CaptureFault outputs state information on the logger.
|
|
func (l *JSONLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
|
|
return nil
|
|
}
|
|
|
|
// CaptureEnd is triggered at end of execution.
|
|
func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error {
|
|
type endLog struct {
|
|
Output string `json:"output"`
|
|
GasUsed math.HexOrDecimal64 `json:"gasUsed"`
|
|
Time time.Duration `json:"time"`
|
|
Err string `json:"error,omitempty"`
|
|
}
|
|
if err != nil {
|
|
return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, err.Error()})
|
|
}
|
|
return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, ""})
|
|
}
|
|
|