-
Notifications
You must be signed in to change notification settings - Fork 42
/
erigon.go
162 lines (147 loc) · 4.54 KB
/
erigon.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
// Copyright 2019 Martin Holst Swende
// This file is part of the goevmlab library.
//
// The library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the goevmlab library. If not, see <http://www.gnu.org/licenses/>.
package evms
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"os/exec"
"time"
"github.com/ethereum/go-ethereum/log"
)
// ErigonVM is s Evm-interface wrapper around the eroigon `evm` binary
type ErigonVM struct {
path string
name string // in case multiple instances are used
// Some metrics
stats *VmStat
}
func NewErigonVM(path, name string) *ErigonVM {
return &ErigonVM{
path: path,
name: name,
stats: new(VmStat),
}
}
func (evm *ErigonVM) Instance(int) Evm {
return evm
}
func (evm *ErigonVM) Name() string {
return evm.name
}
// GetStateRoot runs the test and returns the stateroot
// This currently only works for non-filled statetests. TODO: make it work even if the
// test is filled. Either by getting the whole trace, or adding stateroot to exec std output
// even in success-case
func (evm *ErigonVM) GetStateRoot(path string) (root, command string, err error) {
// In this mode, we can run it without tracing
cmd := exec.Command(evm.path, "statetest", path)
data, err := cmd.CombinedOutput()
if err != nil {
return "", cmd.String(), err
}
root, err = evm.ParseStateRoot(data)
if err != nil {
log.Error("Failed to find stateroot", "vm", evm.Name(), "cmd", cmd.String())
return "", cmd.String(), err
}
return root, cmd.String(), err
}
// ParseStateRoot reads the stateroot from the combined output.
func (evm *ErigonVM) ParseStateRoot(data []byte) (string, error) {
start := bytes.Index(data, []byte(`"stateRoot": "`))
end := start + 14 + 66
if start == -1 || end >= len(data) {
return "", fmt.Errorf("%v: no stateroot found", evm.Name())
}
return string(data[start+14 : end]), nil
}
// RunStateTest implements the Evm interface
func (evm *ErigonVM) RunStateTest(path string, out io.Writer, speedTest bool) (*tracingResult, error) {
var (
t0 = time.Now()
stderr io.ReadCloser
err error
cmd = exec.Command(evm.path, "--json", "--noreturndata", "--nomemory", "statetest", path)
)
if speedTest {
cmd = exec.Command(evm.path, "--nomemory", "--noreturndata", "--nostack", "statetest", path)
}
if stderr, err = cmd.StderrPipe(); err != nil {
return &tracingResult{Cmd: cmd.String()}, err
}
if err = cmd.Start(); err != nil {
return &tracingResult{Cmd: cmd.String()}, err
}
// copy everything to the given writer
evm.Copy(out, stderr)
err = cmd.Wait()
// release resources
duration, slow := evm.stats.TraceDone(t0)
return &tracingResult{
Slow: slow,
ExecTime: duration,
Cmd: cmd.String()},
err
}
func (vm *ErigonVM) Close() {
}
// Copy reads from the reader, does some geth-specific filtering and
// outputs items onto the channel
func (evm *ErigonVM) Copy(out io.Writer, input io.Reader) {
evm.copyUntilEnd(out, input)
}
// copyUntilEnd reads from the reader, does some geth-specific filtering and
// outputs items onto the channel
func (evm *ErigonVM) copyUntilEnd(out io.Writer, input io.Reader) stateRoot {
scanner := NewJsonlScanner("erigon", input, os.Stderr)
defer scanner.Release()
var stateRoot stateRoot
for {
var elem opLog
if err := scanner.Next(&elem); err != nil {
break
}
// If we have a stateroot, we're done
if len(elem.StateRoot1) != 0 {
stateRoot.StateRoot = elem.StateRoot1
break
}
if elem.Depth == 0 {
continue
}
// When geth encounters end of code, it continues anyway, on a 'virtual' STOP.
// In order to handle that, we need to drop all STOP opcodes.
if elem.Op == 0x0 {
continue
}
outp := CustomMarshal(&elem)
if _, err := out.Write(append(outp, '\n')); err != nil {
fmt.Fprintf(os.Stderr, "Error writing to out: %v\n", err)
return stateRoot
}
}
root, _ := json.Marshal(stateRoot)
if _, err := out.Write(append(root, '\n')); err != nil {
fmt.Fprintf(os.Stderr, "Error writing to out: %v\n", err)
}
return stateRoot
}
func (evm *ErigonVM) Stats() []any {
return evm.stats.Stats()
}