-
Notifications
You must be signed in to change notification settings - Fork 126
/
badger_transaction.go
251 lines (220 loc) · 6.12 KB
/
badger_transaction.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
package storage
import (
"bytes"
"encoding/binary"
"encoding/hex"
"fmt"
"github.com/MixinNetwork/mixin/common"
"github.com/MixinNetwork/mixin/config"
"github.com/MixinNetwork/mixin/crypto"
"github.com/dgraph-io/badger"
"github.com/vmihailenco/msgpack"
)
func (s *BadgerStore) ReadTransaction(hash crypto.Hash) (*common.SignedTransaction, error) {
txn := s.snapshotsDB.NewTransaction(false)
defer txn.Discard()
return readTransaction(txn, hash)
}
func (s *BadgerStore) WriteTransaction(tx *common.SignedTransaction) error {
txn := s.snapshotsDB.NewTransaction(true)
defer txn.Discard()
// FIXME assert kind checks, not needed at all
if config.Debug {
txHash := tx.PayloadHash()
for _, in := range tx.Inputs {
if len(in.Genesis) > 0 {
continue
}
if in.Deposit != nil {
ival, err := readDepositInput(txn, in.Deposit)
if err != nil {
panic(fmt.Errorf("deposit check error %s", err.Error()))
}
if bytes.Compare(ival, txHash[:]) != 0 {
panic(fmt.Errorf("deposit locked for transaction %s", hex.EncodeToString(ival)))
}
continue
}
if in.Mint != nil {
dist, err := readMintInput(txn, in.Mint)
if err != nil {
panic(fmt.Errorf("mint check error %s", err.Error()))
}
if dist.Transaction != txHash || dist.Amount.Cmp(in.Mint.Amount) != 0 {
panic(fmt.Errorf("mint locked for transaction %s", dist.Transaction.String()))
}
continue
}
key := graphUtxoKey(in.Hash, in.Index)
item, err := txn.Get(key)
if err != nil {
panic(fmt.Errorf("UTXO check error %s %s:%d=>%s", err.Error(), in.Hash.String(), in.Index, txHash.String()))
}
ival, err := item.ValueCopy(nil)
if err != nil {
panic(fmt.Errorf("UTXO check error %s", err.Error()))
}
var out common.UTXOWithLock
err = msgpack.Unmarshal(ival, &out)
if err != nil {
panic(fmt.Errorf("UTXO check error %s", err.Error()))
}
if out.LockHash != txHash {
panic(fmt.Errorf("utxo locked for transaction %s", out.LockHash))
}
}
}
// assert end
err := writeTransaction(txn, tx)
if err != nil {
return err
}
return txn.Commit()
}
func (s *BadgerStore) CheckTransactionFinalization(hash crypto.Hash) (bool, error) {
txn := s.snapshotsDB.NewTransaction(false)
defer txn.Discard()
key := graphFinalizationKey(hash)
_, err := txn.Get(key)
if err == badger.ErrKeyNotFound {
return false, nil
} else if err != nil {
return false, err
}
return true, nil
}
func (s *BadgerStore) CheckTransactionInNode(nodeId, hash crypto.Hash) (bool, error) {
txn := s.snapshotsDB.NewTransaction(false)
defer txn.Discard()
key := graphUniqueKey(nodeId, hash)
_, err := txn.Get(key)
if err == badger.ErrKeyNotFound {
return false, nil
} else if err != nil {
return false, err
}
return true, nil
}
func readTransaction(txn *badger.Txn, hash crypto.Hash) (*common.SignedTransaction, error) {
var out common.SignedTransaction
key := graphTransactionKey(hash)
err := graphReadValue(txn, key, &out)
if err == badger.ErrKeyNotFound {
return nil, nil
}
return &out, err
}
func pruneTransaction(txn *badger.Txn, hash crypto.Hash) error {
key := graphFinalizationKey(hash)
_, err := txn.Get(key)
if err == nil {
return fmt.Errorf("prune finalized transaction %s", hash.String())
} else if err != badger.ErrKeyNotFound {
return err
}
key = graphTransactionKey(hash)
return txn.Delete(key)
}
func writeTransaction(txn *badger.Txn, tx *common.SignedTransaction) error {
key := graphTransactionKey(tx.PayloadHash())
// FIXME assert only, remove in future
if config.Debug {
_, err := txn.Get(key)
if err == nil {
panic("transaction duplication")
} else if err != badger.ErrKeyNotFound {
return err
}
}
// end assert
val := common.MsgpackMarshalPanic(tx)
return txn.Set(key, val)
}
func finalizeTransaction(txn *badger.Txn, tx *common.SignedTransaction) error {
key := graphFinalizationKey(tx.PayloadHash())
_, err := txn.Get(key)
if err == nil {
return nil
} else if err != badger.ErrKeyNotFound {
return err
}
err = txn.Set(key, []byte{})
if err != nil {
return err
}
var genesis bool
for _, in := range tx.Inputs {
if len(in.Genesis) > 0 {
genesis = true
break
}
}
for _, utxo := range tx.UnspentOutputs() {
err := writeUTXO(txn, utxo, tx.Extra, genesis)
if err != nil {
return err
}
}
return nil
}
func writeUTXO(txn *badger.Txn, utxo *common.UTXO, extra []byte, genesis bool) error {
for _, k := range utxo.Keys {
key := graphGhostKey(k)
// FIXME assert kind checks, not needed at all
if config.Debug {
_, err := txn.Get(key)
if err == nil {
panic("ErrorValidateFailed")
} else if err != badger.ErrKeyNotFound {
return err
}
}
// assert end
err := txn.Set(key, []byte{0})
if err != nil {
return err
}
}
key := graphUtxoKey(utxo.Hash, utxo.Index)
val := common.MsgpackMarshalPanic(utxo)
err := txn.Set(key, val)
if err != nil {
return err
}
switch utxo.Type {
case common.OutputTypeNodePledge:
var signer, payee crypto.Key
copy(signer[:], extra[:len(signer)])
copy(payee[:], extra[len(signer):])
return writeNodePledge(txn, signer, payee, utxo.Hash)
case common.OutputTypeNodeAccept:
var signer, payee crypto.Key
copy(signer[:], extra[:len(signer)])
copy(payee[:], extra[len(signer):])
return writeNodeAccept(txn, signer, payee, utxo.Hash, genesis)
case common.OutputTypeDomainAccept:
var signer crypto.Key
copy(signer[:], extra)
return writeDomainAccept(txn, signer, utxo.Hash)
}
return nil
}
func graphTransactionKey(hash crypto.Hash) []byte {
return append([]byte(graphPrefixTransaction), hash[:]...)
}
func graphFinalizationKey(hash crypto.Hash) []byte {
return append([]byte(graphPrefixFinalization), hash[:]...)
}
func graphUniqueKey(nodeId, hash crypto.Hash) []byte {
key := append(hash[:], nodeId[:]...)
return append([]byte(graphPrefixUnique), key...)
}
func graphGhostKey(k crypto.Key) []byte {
return append([]byte(graphPrefixGhost), k[:]...)
}
func graphUtxoKey(hash crypto.Hash, index int) []byte {
buf := make([]byte, binary.MaxVarintLen64)
size := binary.PutVarint(buf, int64(index))
key := append([]byte(graphPrefixUTXO), hash[:]...)
return append(key, buf[:size]...)
}