-
Notifications
You must be signed in to change notification settings - Fork 0
/
commitEntry.go
289 lines (235 loc) · 6.86 KB
/
commitEntry.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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
// Copyright 2017 Factom Foundation
// Use of this source code is governed by the MIT
// license that can be found in the LICENSE file.
package messages
import (
"encoding/binary"
"fmt"
"reflect"
"github.com/DCNT-Hammer/dcnt/common/constants"
"github.com/DCNT-Hammer/dcnt/common/entryCreditBlock"
"github.com/DCNT-Hammer/dcnt/common/interfaces"
"github.com/DCNT-Hammer/dcnt/common/primitives"
"github.com/DCNT-Hammer/dcnt/common/messages/msgbase"
log "github.com/sirupsen/logrus"
)
//A placeholder structure for messages
type CommitEntryMsg struct {
msgbase.MessageBase
CommitEntry *entryCreditBlock.CommitEntry
Signature interfaces.IFullSignature
//Not marshalled
hash interfaces.IHash
// Not marshalled... Just used by the leader
count int
validsig bool
marshalCache []byte
}
var _ interfaces.IMsg = (*CommitEntryMsg)(nil)
var _ interfaces.Signable = (*CommitEntryMsg)(nil)
func (a *CommitEntryMsg) IsSameAs(b *CommitEntryMsg) bool {
if a == nil || b == nil {
if a == nil && b == nil {
return true
}
return false
}
if a.CommitEntry == nil && b.CommitEntry != nil {
return false
}
if a.CommitEntry != nil {
if a.CommitEntry.IsSameAs(b.CommitEntry) == false {
return false
}
}
if a.Signature == nil && b.Signature != nil {
return false
}
if a.Signature != nil {
if a.Signature.IsSameAs(b.Signature) == false {
return false
}
}
return true
}
func (m *CommitEntryMsg) GetCount() int {
return m.count
}
func (m *CommitEntryMsg) IncCount() {
m.count += 1
}
func (m *CommitEntryMsg) SetCount(cnt int) {
m.count = cnt
}
func (m *CommitEntryMsg) Process(dbheight uint32, state interfaces.IState) bool {
return state.ProcessCommitEntry(dbheight, m)
}
func (m *CommitEntryMsg) GetRepeatHash() (rval interfaces.IHash) {
defer func() {
if rval != nil && reflect.ValueOf(rval).IsNil() {
rval = nil // convert an interface that is nil to a nil interface
primitives.LogNilHashBug("CommitEntryMsg.GetRepeatHash() saw an interface that was nil")
}
}()
return m.CommitEntry.GetSigHash()
}
func (m *CommitEntryMsg) GetHash() (rval interfaces.IHash) {
defer func() {
if rval != nil && reflect.ValueOf(rval).IsNil() {
rval = nil // convert an interface that is nil to a nil interface
primitives.LogNilHashBug("CommitEntryMsg.GetHash() saw an interface that was nil")
}
}()
return m.CommitEntry.EntryHash
}
func (m *CommitEntryMsg) GetMsgHash() (rval interfaces.IHash) {
defer func() {
if rval != nil && reflect.ValueOf(rval).IsNil() {
rval = nil // convert an interface that is nil to a nil interface
primitives.LogNilHashBug("CommitEntryMsg.GetMsgHash() saw an interface that was nil")
}
}()
if m.MsgHash == nil {
m.MsgHash = m.CommitEntry.GetSigHash()
}
return m.MsgHash
}
func (m *CommitEntryMsg) GetTimestamp() interfaces.Timestamp {
return m.CommitEntry.GetTimestamp()
}
func (m *CommitEntryMsg) Type() byte {
return constants.COMMIT_ENTRY_MSG
}
func (m *CommitEntryMsg) Sign(key interfaces.Signer) error {
signature, err := msgbase.SignSignable(m, key)
if err != nil {
return err
}
m.Signature = signature
return nil
}
func (m *CommitEntryMsg) GetSignature() interfaces.IFullSignature {
return m.Signature
}
func (m *CommitEntryMsg) VerifySignature() (bool, error) {
return msgbase.VerifyMessage(m)
}
func (m *CommitEntryMsg) UnmarshalBinaryData(data []byte) (newData []byte, err error) {
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("Error unmarshalling Commit entry Message: %v", r)
}
}()
newData = data
if newData[0] != m.Type() {
return nil, fmt.Errorf("Invalid Message type")
}
newData = newData[1:]
ce := entryCreditBlock.NewCommitEntry()
newData, err = ce.UnmarshalBinaryData(newData)
if err != nil {
return nil, err
}
m.CommitEntry = ce
if len(newData) > 0 {
m.Signature = new(primitives.Signature)
newData, err = m.Signature.UnmarshalBinaryData(newData)
if err != nil {
return nil, err
}
}
m.marshalCache = append(m.marshalCache, data[:len(data)-len(newData)]...)
return newData, nil
}
func (m *CommitEntryMsg) UnmarshalBinary(data []byte) error {
_, err := m.UnmarshalBinaryData(data)
return err
}
func (m *CommitEntryMsg) MarshalForSignature() (data []byte, err error) {
var buf primitives.Buffer
binary.Write(&buf, binary.BigEndian, m.Type())
data, err = m.CommitEntry.MarshalBinary()
if err != nil {
return nil, err
}
buf.Write(data)
return buf.DeepCopyBytes(), nil
}
func (m *CommitEntryMsg) MarshalBinary() (data []byte, err error) {
if m.marshalCache != nil {
return m.marshalCache, nil
}
resp, err := m.MarshalForSignature()
if err != nil {
return nil, err
}
sig := m.GetSignature()
if sig != nil {
sigBytes, err := sig.MarshalBinary()
if err != nil {
return nil, err
}
return append(resp, sigBytes...), nil
}
return resp, nil
}
func (m *CommitEntryMsg) String() string {
if m.LeaderChainID == nil {
m.LeaderChainID = primitives.NewZeroHash()
}
str := fmt.Sprintf("%6s-VM%3d: %s -- EntryHash[%x] Hash[%x] base=%s",
"CEntry",
m.VMIndex,
m.CommitEntry.String(),
m.CommitEntry.GetEntryHash().Bytes()[:3],
m.GetHash().Bytes()[:3],
m.StringOfMsgBase())
return str
}
func (m *CommitEntryMsg) LogFields() log.Fields {
if m.LeaderChainID == nil {
m.LeaderChainID = primitives.NewZeroHash()
}
return log.Fields{"category": "message", "messagetype": "commitentry", "vmindex": m.VMIndex,
"server": m.LeaderChainID.String(),
"commitchain": m.CommitEntry.GetEntryHash().String(),
"hash": m.GetHash().String()}
}
// Validate the message, given the state. Three possible results:
// < 0 -- Message is invalid. Discard
// 0 -- Cannot tell if message is Valid
// 1 -- Message is valid
func (m *CommitEntryMsg) Validate(state interfaces.IState) int {
if !m.validsig && !m.CommitEntry.IsValid() {
return -1
}
m.validsig = true
ebal := state.GetFactoidState().GetECBalance(*m.CommitEntry.ECPubKey)
if int(m.CommitEntry.Credits) > int(ebal) {
// return 0 // old way add to scanned holding queue
// new holding mechanism added it to a list of messages dependent on the EC address
return state.Add(m.CommitEntry.ECPubKey.Fixed(), m)
}
return 1
}
func (m *CommitEntryMsg) ComputeVMIndex(state interfaces.IState) {
m.VMIndex = state.ComputeVMIndex(constants.EC_CHAINID)
}
// Execute the leader functions of the given message
func (m *CommitEntryMsg) LeaderExecute(state interfaces.IState) {
// Check if we have yet to see an entry. If we have seen one (NoEntryYet == false) then
// this commit is invalid.
state.LeaderExecuteCommitEntry(m)
}
func (m *CommitEntryMsg) FollowerExecute(state interfaces.IState) {
state.FollowerExecuteCommitEntry(m)
}
func (e *CommitEntryMsg) JSONByte() ([]byte, error) {
return primitives.EncodeJSON(e)
}
func (e *CommitEntryMsg) JSONString() (string, error) {
return primitives.EncodeJSONString(e)
}
func NewCommitEntryMsg() *CommitEntryMsg {
return new(CommitEntryMsg)
}