-
Notifications
You must be signed in to change notification settings - Fork 199
/
fullHistoryPruningStorer.go
221 lines (179 loc) · 6.15 KB
/
fullHistoryPruningStorer.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
package pruning
import (
"encoding/hex"
"fmt"
"math"
"github.com/ElrondNetwork/elrond-go/storage"
"github.com/ElrondNetwork/elrond-go/storage/lrucache"
)
// FullHistoryPruningStorer represents a storer for full history nodes
// which creates a new persister for each epoch and removes older activePersisters
type FullHistoryPruningStorer struct {
*PruningStorer
args *StorerArgs
shardId string
oldEpochsActivePersistersCache storage.Cacher
}
// NewFullHistoryPruningStorer will return a new instance of PruningStorer without sharded directories' naming scheme
func NewFullHistoryPruningStorer(args *FullHistoryStorerArgs) (*FullHistoryPruningStorer, error) {
return initFullHistoryPruningStorer(args, "")
}
// NewShardedFullHistoryPruningStorer will return a new instance of PruningStorer with sharded directories' naming scheme
func NewShardedFullHistoryPruningStorer(
args *FullHistoryStorerArgs,
shardID uint32,
) (*FullHistoryPruningStorer, error) {
shardStr := fmt.Sprintf("%d", shardID)
return initFullHistoryPruningStorer(args, shardStr)
}
func initFullHistoryPruningStorer(args *FullHistoryStorerArgs, shardId string) (*FullHistoryPruningStorer, error) {
err := checkArgs(args.StorerArgs)
if err != nil {
return nil, err
}
activePersisters, persistersMapByEpoch, err := initPersistersInEpoch(args.StorerArgs, shardId)
if err != nil {
return nil, err
}
ps, err := initPruningStorer(args.StorerArgs, shardId, activePersisters, persistersMapByEpoch)
if err != nil {
return nil, err
}
ps.registerHandler(args.Notifier)
if args.NumOfOldActivePersisters < 1 || args.NumOfOldActivePersisters > math.MaxInt32 {
return nil, storage.ErrInvalidNumberOfOldPersisters
}
fhps := &FullHistoryPruningStorer{
PruningStorer: ps,
args: args.StorerArgs,
shardId: shardId,
}
fhps.oldEpochsActivePersistersCache, err = lrucache.NewCacheWithEviction(int(args.NumOfOldActivePersisters), fhps.onEvicted)
if err != nil {
return nil, err
}
return fhps, nil
}
// GetFromEpoch will search a key only in the persister for the given epoch
func (fhps *FullHistoryPruningStorer) GetFromEpoch(key []byte, epoch uint32) ([]byte, error) {
data, err := fhps.searchInEpoch(key, epoch)
if err == nil && data != nil {
return data, nil
}
return fhps.searchInEpoch(key, epoch+1)
}
// GetBulkFromEpoch will search a a bulk of keys in the persister for the given epoch
// doesn't return an error if a key or any isn't found
func (fhps *FullHistoryPruningStorer) GetBulkFromEpoch(keys [][]byte, epoch uint32) (map[string][]byte, error) {
persister, err := fhps.getOrOpenPersister(epoch)
if err != nil {
return nil, err
}
results := make(map[string][]byte)
for _, key := range keys {
dataInCache, found := fhps.cacher.Get(key)
if found {
results[string(key)] = dataInCache.([]byte)
continue
}
data, errGet := persister.Get(key)
if errGet == nil && data != nil {
results[string(key)] = data
}
}
return results, nil
}
// PutInEpoch will set the key-value pair in the given epoch
func (fhps *FullHistoryPruningStorer) PutInEpoch(key []byte, data []byte, epoch uint32) error {
fhps.cacher.Put(key, data, len(data))
persister, err := fhps.getOrOpenPersister(epoch)
if err != nil {
return err
}
return fhps.doPutInPersister(key, data, persister)
}
func (fhps *FullHistoryPruningStorer) searchInEpoch(key []byte, epoch uint32) ([]byte, error) {
if fhps.isEpochActive(epoch) {
return fhps.PruningStorer.SearchFirst(key)
}
data, err := fhps.getFromOldEpoch(key, epoch)
if err != nil {
return nil, err
}
return data, nil
}
func (fhps *FullHistoryPruningStorer) isEpochActive(epoch uint32) bool {
fhps.lock.RLock()
oldestEpochInCurrentSetting := fhps.activePersisters[len(fhps.activePersisters)-1].epoch
newestEpochInCurrentSetting := fhps.activePersisters[0].epoch
fhps.lock.RUnlock()
return epoch >= oldestEpochInCurrentSetting && epoch <= newestEpochInCurrentSetting
}
func (fhps *FullHistoryPruningStorer) getFromOldEpoch(key []byte, epoch uint32) ([]byte, error) {
persister, err := fhps.getOrOpenPersister(epoch)
if err != nil {
return nil, err
}
res, err := persister.Get(key)
if err == nil {
return res, nil
}
log.Trace("FullHistoryPruningStorer.getFromOldEpoch",
"id", fhps.identifier,
"epoch", epoch,
"key", key,
"error", err.Error())
return nil, fmt.Errorf("key %s not found in %s",
hex.EncodeToString(key), fhps.identifier)
}
func (fhps *FullHistoryPruningStorer) getOrOpenPersister(epoch uint32) (storage.Persister, error) {
epochString := fmt.Sprintf("%d", epoch)
fhps.lock.RLock()
pdata, exists := fhps.getPersisterData(epochString, epoch)
fhps.lock.RUnlock()
if exists {
isClosed := pdata.getIsClosed()
if !isClosed {
return pdata.getPersister(), nil
}
}
fhps.lock.Lock()
defer fhps.lock.Unlock()
pdata, exists = fhps.getPersisterData(epochString, epoch)
if !exists {
newPdata, errPersisterData := createPersisterDataForEpoch(fhps.args, epoch, fhps.shardId)
if errPersisterData != nil {
return nil, errPersisterData
}
fhps.oldEpochsActivePersistersCache.Put([]byte(epochString), newPdata, 0)
fhps.persistersMapByEpoch[epoch] = newPdata
return newPdata.getPersister(), nil
}
persister, _, err := fhps.createAndInitPersisterIfClosedUnprotected(pdata)
if err != nil {
return nil, err
}
_, ok := fhps.oldEpochsActivePersistersCache.Get([]byte(epochString))
if !ok {
log.Debug("fhps - getOrOpenPersister - put in cache", "epoch", epochString)
fhps.oldEpochsActivePersistersCache.Put([]byte(epochString), pdata, 0)
}
return persister, nil
}
func (fhps *FullHistoryPruningStorer) getPersisterData(epochString string, epoch uint32) (*persisterData, bool) {
pdata, exists := fhps.oldEpochsActivePersistersCache.Get([]byte(epochString))
if exists {
return pdata.(*persisterData), true
}
var pDataObj *persisterData
pDataObj, exists = fhps.persistersMapByEpoch[epoch]
if exists {
return pDataObj, true
}
return nil, false
}
// Close will try to close all opened persisters, including the ones in the LRU cache
func (fhps *FullHistoryPruningStorer) Close() error {
fhps.oldEpochsActivePersistersCache.Clear()
return fhps.PruningStorer.Close()
}