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
|
// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package sqlitedriver
import (
"context"
"database/sql"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/ledger/encoded"
"github.com/algorand/go-algorand/ledger/store/trackerdb"
"github.com/algorand/go-algorand/util/db"
"github.com/algorand/msgp/msgp"
)
// encodedAccountsBatchIter allows us to iterate over the accounts data stored in the accountbase table.
type encodedAccountsBatchIter struct {
q db.Queryable
accountsRows *sql.Rows
resourcesRows *sql.Rows
nextBaseRow pendingBaseRow
nextResourceRow pendingResourceRow
acctResCnt catchpointAccountResourceCounter
}
// catchpointAccountResourceCounter keeps track of the resources processed for the current account
type catchpointAccountResourceCounter struct {
totalAppParams uint64
totalAppLocalStates uint64
totalAssetParams uint64
totalAssets uint64
}
// MakeEncodedAccoutsBatchIter creates an empty accounts batch iterator.
func MakeEncodedAccoutsBatchIter(q db.Queryable) *encodedAccountsBatchIter {
return &encodedAccountsBatchIter{q: q}
}
// Next returns an array containing the account data, in the same way it appear in the database
// returning accountCount accounts data at a time.
func (iterator *encodedAccountsBatchIter) Next(ctx context.Context, accountCount int, resourceCount int) (bals []encoded.BalanceRecordV6, numAccountsProcessed uint64, err error) {
if iterator.accountsRows == nil {
iterator.accountsRows, err = iterator.q.QueryContext(ctx, "SELECT rowid, address, data FROM accountbase ORDER BY rowid")
if err != nil {
return
}
}
if iterator.resourcesRows == nil {
iterator.resourcesRows, err = iterator.q.QueryContext(ctx, "SELECT addrid, aidx, data FROM resources ORDER BY addrid, aidx")
if err != nil {
return
}
}
// gather up to accountCount encoded accounts.
bals = make([]encoded.BalanceRecordV6, 0, accountCount)
var encodedRecord encoded.BalanceRecordV6
var baseAcct trackerdb.BaseAccountData
var numAcct int
baseCb := func(addr basics.Address, rowid int64, accountData *trackerdb.BaseAccountData, encodedAccountData []byte) (err error) {
encodedRecord = encoded.BalanceRecordV6{Address: addr, AccountData: encodedAccountData}
baseAcct = *accountData
numAcct++
return nil
}
var totalResources int
// emptyCount := 0
resCb := func(addr basics.Address, cidx basics.CreatableIndex, resData *trackerdb.ResourcesData, encodedResourceData []byte, lastResource bool) error {
emptyBaseAcct := baseAcct.TotalAppParams == 0 && baseAcct.TotalAppLocalStates == 0 && baseAcct.TotalAssetParams == 0 && baseAcct.TotalAssets == 0
if !emptyBaseAcct && resData != nil {
if encodedRecord.Resources == nil {
encodedRecord.Resources = make(map[uint64]msgp.Raw)
}
encodedRecord.Resources[uint64(cidx)] = encodedResourceData
if resData.IsApp() && resData.IsOwning() {
iterator.acctResCnt.totalAppParams++
}
if resData.IsApp() && resData.IsHolding() {
iterator.acctResCnt.totalAppLocalStates++
}
if resData.IsAsset() && resData.IsOwning() {
iterator.acctResCnt.totalAssetParams++
}
if resData.IsAsset() && resData.IsHolding() {
iterator.acctResCnt.totalAssets++
}
totalResources++
}
if baseAcct.TotalAppParams == iterator.acctResCnt.totalAppParams &&
baseAcct.TotalAppLocalStates == iterator.acctResCnt.totalAppLocalStates &&
baseAcct.TotalAssetParams == iterator.acctResCnt.totalAssetParams &&
baseAcct.TotalAssets == iterator.acctResCnt.totalAssets {
encodedRecord.ExpectingMoreEntries = false
bals = append(bals, encodedRecord)
numAccountsProcessed++
iterator.acctResCnt = catchpointAccountResourceCounter{}
return nil
}
// max resources per chunk reached, stop iterating.
if lastResource {
encodedRecord.ExpectingMoreEntries = true
bals = append(bals, encodedRecord)
encodedRecord.Resources = nil
}
return nil
}
_, iterator.nextBaseRow, iterator.nextResourceRow, err = processAllBaseAccountRecords(
iterator.accountsRows, iterator.resourcesRows,
baseCb, resCb,
iterator.nextBaseRow, iterator.nextResourceRow, accountCount, resourceCount,
)
if err != nil {
iterator.Close()
return
}
if len(bals) == accountCount || totalResources == resourceCount {
// we're done with this iteration.
return
}
err = iterator.accountsRows.Err()
if err != nil {
iterator.Close()
return
}
// Do not Close() the iterator here. It is the caller's responsibility to
// do so, signalled by the return of an empty chunk. If we Close() here, the
// next call to Next() will start all over!
return
}
// Close shuts down the encodedAccountsBatchIter, releasing database resources.
func (iterator *encodedAccountsBatchIter) Close() {
if iterator.accountsRows != nil {
iterator.accountsRows.Close()
iterator.accountsRows = nil
}
if iterator.resourcesRows != nil {
iterator.resourcesRows.Close()
iterator.resourcesRows = nil
}
}
|
