-
Notifications
You must be signed in to change notification settings - Fork 1.3k
/
markset_badger.go
338 lines (264 loc) · 6.7 KB
/
markset_badger.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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
package splitstore
import (
"os"
"path/filepath"
"sync"
"golang.org/x/xerrors"
"github.com/dgraph-io/badger/v2"
"github.com/dgraph-io/badger/v2/options"
"go.uber.org/zap"
cid "github.com/ipfs/go-cid"
)
type BadgerMarkSetEnv struct {
path string
}
var _ MarkSetEnv = (*BadgerMarkSetEnv)(nil)
type BadgerMarkSet struct {
mx sync.RWMutex
cond sync.Cond
pend map[string]struct{}
writing map[int]map[string]struct{}
writers int
seqno int
version int
db *badger.DB
path string
}
var _ MarkSet = (*BadgerMarkSet)(nil)
var _ MarkSetVisitor = (*BadgerMarkSet)(nil)
var badgerMarkSetBatchSize = 16384
func NewBadgerMarkSetEnv(path string) (MarkSetEnv, error) {
msPath := filepath.Join(path, "markset.badger")
err := os.MkdirAll(msPath, 0755) //nolint:gosec
if err != nil {
return nil, xerrors.Errorf("error creating markset directory: %w", err)
}
return &BadgerMarkSetEnv{path: msPath}, nil
}
func (e *BadgerMarkSetEnv) create(name string, sizeHint int64) (*BadgerMarkSet, error) {
name += ".tmp"
path := filepath.Join(e.path, name)
db, err := openTransientBadgerDB(path)
if err != nil {
return nil, xerrors.Errorf("error creating badger db: %w", err)
}
ms := &BadgerMarkSet{
pend: make(map[string]struct{}),
writing: make(map[int]map[string]struct{}),
db: db,
path: path,
}
ms.cond.L = &ms.mx
return ms, nil
}
func (e *BadgerMarkSetEnv) Create(name string, sizeHint int64) (MarkSet, error) {
return e.create(name, sizeHint)
}
func (e *BadgerMarkSetEnv) CreateVisitor(name string, sizeHint int64) (MarkSetVisitor, error) {
return e.create(name, sizeHint)
}
func (e *BadgerMarkSetEnv) SupportsVisitor() bool { return true }
func (e *BadgerMarkSetEnv) Close() error {
return os.RemoveAll(e.path)
}
func (s *BadgerMarkSet) Mark(c cid.Cid) error {
s.mx.Lock()
if s.pend == nil {
s.mx.Unlock()
return errMarkSetClosed
}
write, seqno := s.put(string(c.Hash()))
s.mx.Unlock()
if write {
return s.write(seqno)
}
return nil
}
func (s *BadgerMarkSet) Has(c cid.Cid) (bool, error) {
s.mx.RLock()
defer s.mx.RUnlock()
key := c.Hash()
pendKey := string(key)
has, err := s.tryPending(pendKey)
if has || err != nil {
return has, err
}
return s.tryDB(key)
}
func (s *BadgerMarkSet) Visit(c cid.Cid) (bool, error) {
key := c.Hash()
pendKey := string(key)
s.mx.RLock()
has, err := s.tryPending(pendKey)
if has || err != nil {
s.mx.RUnlock()
return false, err
}
has, err = s.tryDB(key)
if has || err != nil {
s.mx.RUnlock()
return false, err
}
// we need to upgrade the lock to exclusive in order to write; take the version count to see
// if there was another write while we were upgrading
version := s.version
s.mx.RUnlock()
s.mx.Lock()
// we have to do the check dance again
has, err = s.tryPending(pendKey)
if has || err != nil {
s.mx.Unlock()
return false, err
}
if version != s.version {
// something was written to the db, we need to check it
has, err = s.tryDB(key)
if has || err != nil {
s.mx.Unlock()
return false, err
}
}
write, seqno := s.put(pendKey)
s.mx.Unlock()
if write {
err = s.write(seqno)
}
return true, err
}
// reader holds the (r)lock
func (s *BadgerMarkSet) tryPending(key string) (has bool, err error) {
if s.pend == nil {
return false, errMarkSetClosed
}
if _, ok := s.pend[key]; ok {
return true, nil
}
for _, wr := range s.writing {
if _, ok := wr[key]; ok {
return true, nil
}
}
return false, nil
}
func (s *BadgerMarkSet) tryDB(key []byte) (has bool, err error) {
err = s.db.View(func(txn *badger.Txn) error {
_, err := txn.Get(key)
return err
})
switch err {
case nil:
return true, nil
case badger.ErrKeyNotFound:
return false, nil
default:
return false, err
}
}
// writer holds the exclusive lock
func (s *BadgerMarkSet) put(key string) (write bool, seqno int) {
s.pend[key] = struct{}{}
if len(s.pend) < badgerMarkSetBatchSize {
return false, 0
}
seqno = s.seqno
s.seqno++
s.writing[seqno] = s.pend
s.pend = make(map[string]struct{})
return true, seqno
}
func (s *BadgerMarkSet) write(seqno int) (err error) {
s.mx.Lock()
if s.pend == nil {
s.mx.Unlock()
return errMarkSetClosed
}
pend := s.writing[seqno]
s.writers++
s.mx.Unlock()
defer func() {
s.mx.Lock()
defer s.mx.Unlock()
if err == nil {
delete(s.writing, seqno)
s.version++
}
s.writers--
if s.writers == 0 {
s.cond.Broadcast()
}
}()
empty := []byte{} // not nil
batch := s.db.NewWriteBatch()
defer batch.Cancel()
for k := range pend {
if err = batch.Set([]byte(k), empty); err != nil {
return xerrors.Errorf("error setting batch: %w", err)
}
}
err = batch.Flush()
if err != nil {
return xerrors.Errorf("error flushing batch to badger markset: %w", err)
}
return nil
}
func (s *BadgerMarkSet) Close() error {
s.mx.Lock()
defer s.mx.Unlock()
if s.pend == nil {
return nil
}
for s.writers > 0 {
s.cond.Wait()
}
s.pend = nil
db := s.db
s.db = nil
return closeTransientBadgerDB(db, s.path)
}
func (s *BadgerMarkSet) SetConcurrent() {}
func openTransientBadgerDB(path string) (*badger.DB, error) {
// clean up first
err := os.RemoveAll(path)
if err != nil {
return nil, xerrors.Errorf("error clearing markset directory: %w", err)
}
err = os.MkdirAll(path, 0755) //nolint:gosec
if err != nil {
return nil, xerrors.Errorf("error creating markset directory: %w", err)
}
opts := badger.DefaultOptions(path)
opts.SyncWrites = false
opts.CompactL0OnClose = false
opts.Compression = options.None
// Note: We use FileIO for loading modes to avoid memory thrashing and interference
// between the system blockstore and the markset.
// It was observed that using the default memory mapped option resulted in
// significant interference and unacceptably high block validation times once the markset
// exceeded 1GB in size.
opts.TableLoadingMode = options.FileIO
opts.ValueLogLoadingMode = options.FileIO
opts.Logger = &badgerLogger{
SugaredLogger: log.Desugar().WithOptions(zap.AddCallerSkip(1)).Sugar(),
skip2: log.Desugar().WithOptions(zap.AddCallerSkip(2)).Sugar(),
}
return badger.Open(opts)
}
func closeTransientBadgerDB(db *badger.DB, path string) error {
err := db.Close()
if err != nil {
return xerrors.Errorf("error closing badger markset: %w", err)
}
err = os.RemoveAll(path)
if err != nil {
return xerrors.Errorf("error deleting badger markset: %w", err)
}
return nil
}
// badger logging through go-log
type badgerLogger struct {
*zap.SugaredLogger
skip2 *zap.SugaredLogger
}
func (b *badgerLogger) Warningf(format string, args ...interface{}) {}
func (b *badgerLogger) Infof(format string, args ...interface{}) {}
func (b *badgerLogger) Debugf(format string, args ...interface{}) {}