/
exporter.go
252 lines (217 loc) · 6.87 KB
/
exporter.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
/*
* Copyright 2019 Insolar Technologies
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package exporter
import (
"bytes"
"context"
"math"
"strconv"
"github.com/insolar/insolar/configuration"
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/core/message"
"github.com/insolar/insolar/instrumentation/inslogger"
"github.com/insolar/insolar/ledger/storage"
"github.com/insolar/insolar/ledger/storage/record"
base58 "github.com/jbenet/go-base58"
"github.com/pkg/errors"
"github.com/ugorji/go/codec"
)
// Exporter provides methods for fetching data view from storage.
type Exporter struct {
DB storage.DBContext `inject:""`
JetStorage storage.JetStorage `inject:""`
ObjectStorage storage.ObjectStorage `inject:""`
PulseTracker storage.PulseTracker `inject:""`
PulseStorage core.PulseStorage `inject:""`
cfg configuration.Exporter
}
// NewExporter creates new StorageExporter instance.
func NewExporter(cfg configuration.Exporter) *Exporter {
return &Exporter{
cfg: cfg,
}
}
type payload map[string]interface{}
// MarshalJSON serializes payload into JSON.
func (p payload) MarshalJSON() ([]byte, error) {
var buf []byte
err := codec.NewEncoderBytes(&buf, &codec.JsonHandle{}).Encode(&p)
return buf, err
}
type recordData struct {
Type string
Data record.Record
Payload payload
}
type recordsData map[string]recordData
type pulseData struct {
Records recordsData
Pulse core.Pulse
JetID core.RecordID
}
// Export returns data view from storage.
func (e *Exporter) Export(ctx context.Context, fromPulse core.PulseNumber, size int) (*core.StorageExportResult, error) {
result := core.StorageExportResult{Data: map[string]interface{}{}}
jetIDs, err := e.JetStorage.GetJets(ctx)
if err != nil {
return nil, errors.Wrap(err, "failed to fetch jets")
}
currentPulse, err := e.PulseStorage.Current(ctx)
if err != nil {
return nil, errors.Wrap(err, "failed to get current pulse data")
}
counter := 0
fromPulsePN := core.PulseNumber(math.Max(float64(fromPulse), float64(core.GenesisPulse.PulseNumber)))
if fromPulsePN > currentPulse.PulseNumber {
return nil, errors.Errorf("failed to fetch data: from-pulse[%v] > current-pulse[%v]",
fromPulsePN, currentPulse.PulseNumber)
}
_, err = e.PulseTracker.GetPulse(ctx, fromPulsePN)
if err != nil {
tryPulse, err := e.PulseTracker.GetPulse(ctx, core.GenesisPulse.PulseNumber)
if err != nil {
return nil, errors.Wrap(err, "failed to fetch genesis pulse data")
}
for fromPulsePN > *tryPulse.Next {
tryPulse, err = e.PulseTracker.GetPulse(ctx, *tryPulse.Next)
if err != nil {
return nil, errors.Wrap(err, "failed to iterate through first pulses")
}
}
fromPulsePN = *tryPulse.Next
}
iterPulse := &fromPulsePN
for iterPulse != nil && counter < size {
pulse, err := e.PulseTracker.GetPulse(ctx, *iterPulse)
if err != nil {
return nil, errors.Wrap(err, "failed to fetch pulse data")
}
// We don't need data from current pulse, because of
// not all data for this pulse is persisted at this moment
// @sergey.morozov 20.01.18 - Blocks are synced to Heavy node with a lag.
// We can't reliably predict this lag so we add threshold of N seconds.
if pulse.Pulse.PulseNumber >= (currentPulse.PrevPulseNumber - core.PulseNumber(e.cfg.ExportLag)) {
iterPulse = nil
break
}
var data []*pulseData
for jetID := range jetIDs {
fetchedData, err := e.exportPulse(ctx, jetID, &pulse.Pulse)
if err != nil {
return nil, err
}
data = append(data, fetchedData)
}
result.Data[strconv.FormatUint(uint64(pulse.Pulse.PulseNumber), 10)] = data
iterPulse = pulse.Next
counter++
}
result.Size = counter
result.NextFrom = iterPulse
return &result, nil
}
func (e *Exporter) exportPulse(ctx context.Context, jetID core.RecordID, pulse *core.Pulse) (*pulseData, error) {
records := recordsData{}
err := e.DB.IterateRecordsOnPulse(ctx, jetID, pulse.PulseNumber, func(id core.RecordID, rec record.Record) error {
pl := e.getPayload(ctx, jetID, rec)
records[string(base58.Encode(id[:]))] = recordData{
Type: recordType(rec),
Data: rec,
Payload: pl,
}
return nil
})
if err != nil {
return nil, errors.Wrap(err, "exportPulse failed to IterateRecordsOnPulse")
}
data := pulseData{
Records: records,
Pulse: *pulse,
JetID: jetID,
}
return &data, nil
}
func (e *Exporter) getPayload(ctx context.Context, jetID core.RecordID, rec record.Record) payload {
switch r := rec.(type) {
case record.ObjectState:
if r.GetMemory() == nil {
break
}
blob, err := e.ObjectStorage.GetBlob(ctx, jetID, r.GetMemory())
if err != nil {
inslogger.FromContext(ctx).Errorf("getPayload failed to GetBlob (jet: %s)", jetID.DebugString())
return payload{}
}
memory := payload{}
err = codec.NewDecoderBytes(blob, &codec.CborHandle{}).Decode(&memory)
if err != nil {
return payload{"MemoryBinary": blob}
}
return payload{"Memory": memory}
case record.Request:
if r.GetPayload() == nil {
break
}
parcel, err := message.DeserializeParcel(bytes.NewBuffer(r.GetPayload()))
if err != nil {
return payload{"PayloadBinary": r.GetPayload()}
}
msg := parcel.Message()
switch m := parcel.Message().(type) {
case *message.CallMethod:
res, err := m.ToMap()
if err != nil {
return payload{"Payload": m, "Type": msg.Type().String()}
}
return payload{"Payload": res, "Type": msg.Type().String()}
case *message.CallConstructor:
res, err := m.ToMap()
if err != nil {
return payload{"Payload": m, "Type": msg.Type().String()}
}
return payload{"Payload": res, "Type": msg.Type().String()}
case *message.GenesisRequest:
return payload{"Payload": m, "Type": msg.Type().String()}
}
return payload{"Payload": msg, "Type": msg.Type().String()}
}
return nil
}
func recordType(rec record.Record) string {
switch rec.(type) {
case *record.GenesisRecord:
return "TypeGenesis"
case *record.ChildRecord:
return "TypeChild"
case *record.JetRecord:
return "TypeJet"
case *record.RequestRecord:
return "TypeCallRequest"
case *record.ResultRecord:
return "TypeResult"
case *record.TypeRecord:
return "TypeType"
case *record.CodeRecord:
return "TypeCode"
case *record.ObjectActivateRecord:
return "TypeActivate"
case *record.ObjectAmendRecord:
return "TypeAmend"
case *record.DeactivationRecord:
return "TypeDeactivate"
}
return record.TypeFromRecord(rec).String()
}