-
Notifications
You must be signed in to change notification settings - Fork 19
/
oneoff_transfers.go
183 lines (157 loc) · 4.81 KB
/
oneoff_transfers.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
// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.VEGA file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package banking
import (
"context"
"errors"
"fmt"
"sort"
"time"
"code.vegaprotocol.io/vega/core/events"
"code.vegaprotocol.io/vega/core/types"
"code.vegaprotocol.io/vega/logging"
checkpoint "code.vegaprotocol.io/vega/protos/vega/checkpoint/v1"
)
var ErrUnsupportedTransferKind = errors.New("unsupported transfer kind")
type scheduledTransfer struct {
// to send events
oneoff *types.OneOffTransfer
transfer *types.Transfer
accountType types.AccountType
reference string
}
func (s *scheduledTransfer) ToProto() *checkpoint.ScheduledTransfer {
return &checkpoint.ScheduledTransfer{
OneoffTransfer: s.oneoff.IntoEvent(nil),
Transfer: s.transfer.IntoProto(),
AccountType: s.accountType,
Reference: s.reference,
}
}
func scheduledTransferFromProto(p *checkpoint.ScheduledTransfer) (scheduledTransfer, error) {
transfer, err := types.TransferFromProto(p.Transfer)
if err != nil {
return scheduledTransfer{}, err
}
return scheduledTransfer{
oneoff: types.OneOffTransferFromEvent(p.OneoffTransfer),
transfer: transfer,
accountType: p.AccountType,
reference: p.Reference,
}, nil
}
func (e *Engine) oneOffTransfer(
ctx context.Context,
transfer *types.OneOffTransfer,
) (err error) {
defer func() {
if err != nil {
e.broker.Send(events.NewOneOffTransferFundsEventWithReason(ctx, transfer, err.Error()))
} else {
e.broker.Send(events.NewOneOffTransferFundsEvent(ctx, transfer))
}
}()
// ensure asset exists
a, err := e.assets.Get(transfer.Asset)
if err != nil {
transfer.Status = types.TransferStatusRejected
e.log.Debug("cannot transfer funds, invalid asset", logging.Error(err))
return fmt.Errorf("could not transfer funds: %w", err)
}
if err := transfer.IsValid(); err != nil {
transfer.Status = types.TransferStatusRejected
return err
}
if err := e.ensureMinimalTransferAmount(a, transfer.Amount); err != nil {
transfer.Status = types.TransferStatusRejected
return err
}
tresps, err := e.processTransfer(
ctx, transfer.From, transfer.To, transfer.Asset, "", transfer.FromAccountType,
transfer.ToAccountType, transfer.Amount, transfer.Reference, transfer,
)
if err != nil {
transfer.Status = types.TransferStatusRejected
return err
}
// all was OK
transfer.Status = types.TransferStatusDone
e.broker.Send(events.NewLedgerMovements(ctx, tresps))
return nil
}
type timesToTransfers struct {
deliverOn int64
transfer []scheduledTransfer
}
func (e *Engine) distributeScheduledTransfers(ctx context.Context) error {
ttfs := []timesToTransfers{}
// iterate over those scheduled transfers to sort them by time
now := e.timeService.GetTimeNow()
for k, v := range e.scheduledTransfers {
if now.UnixNano() >= k {
ttfs = append(ttfs, timesToTransfers{k, v})
delete(e.scheduledTransfers, k)
}
}
// sort slice by time.
// no need to sort transfers they are going out as first in first out.
sort.SliceStable(ttfs, func(i, j int) bool {
return ttfs[i].deliverOn < ttfs[j].deliverOn
})
transfers := []*types.Transfer{}
accountTypes := []types.AccountType{}
references := []string{}
evts := []events.Event{}
for _, v := range ttfs {
for _, t := range v.transfer {
t.oneoff.Status = types.TransferStatusDone
evts = append(evts, events.NewOneOffTransferFundsEvent(ctx, t.oneoff))
transfers = append(transfers, t.transfer)
accountTypes = append(accountTypes, t.accountType)
references = append(references, t.reference)
}
}
if len(transfers) <= 0 {
// nothing to do yeay
return nil
}
// at least 1 transfer updated, set to true
tresps, err := e.col.TransferFunds(
ctx, transfers, accountTypes, references, nil, nil, // no fees required there, they've been paid already
)
if err != nil {
return err
}
e.broker.Send(events.NewLedgerMovements(ctx, tresps))
e.broker.SendBatch(evts)
return nil
}
func (e *Engine) scheduleTransfer(
oneoff *types.OneOffTransfer,
t *types.Transfer,
ty types.AccountType,
reference string,
deliverOn time.Time,
) {
sts, ok := e.scheduledTransfers[deliverOn.UnixNano()]
if !ok {
e.scheduledTransfers[deliverOn.UnixNano()] = []scheduledTransfer{}
sts = e.scheduledTransfers[deliverOn.UnixNano()]
}
sts = append(sts, scheduledTransfer{
oneoff: oneoff,
transfer: t,
accountType: ty,
reference: reference,
})
e.scheduledTransfers[deliverOn.UnixNano()] = sts
}