forked from filecoin-project/lotus
/
paych.go
176 lines (142 loc) · 5.39 KB
/
paych.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
package paych
import (
"context"
"github.com/ipfs/go-cid"
"go.uber.org/fx"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
paychtypes "github.com/filecoin-project/go-state-types/builtin/v8/paych"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/paychmgr"
)
type PaychAPI struct {
fx.In
PaychMgr *paychmgr.Manager
}
func (a *PaychAPI) PaychGet(ctx context.Context, from, to address.Address, amt types.BigInt, opts api.PaychGetOpts) (*api.ChannelInfo, error) {
ch, mcid, err := a.PaychMgr.GetPaych(ctx, from, to, amt, paychmgr.GetOpts{
Reserve: true,
OffChain: opts.OffChain,
})
if err != nil {
return nil, err
}
return &api.ChannelInfo{
Channel: ch,
WaitSentinel: mcid,
}, nil
}
func (a *PaychAPI) PaychFund(ctx context.Context, from, to address.Address, amt types.BigInt) (*api.ChannelInfo, error) {
ch, mcid, err := a.PaychMgr.GetPaych(ctx, from, to, amt, paychmgr.GetOpts{
Reserve: false,
OffChain: false,
})
if err != nil {
return nil, err
}
return &api.ChannelInfo{
Channel: ch,
WaitSentinel: mcid,
}, nil
}
func (a *PaychAPI) PaychAvailableFunds(ctx context.Context, ch address.Address) (*api.ChannelAvailableFunds, error) {
return a.PaychMgr.AvailableFunds(ctx, ch)
}
func (a *PaychAPI) PaychAvailableFundsByFromTo(ctx context.Context, from, to address.Address) (*api.ChannelAvailableFunds, error) {
return a.PaychMgr.AvailableFundsByFromTo(ctx, from, to)
}
func (a *PaychAPI) PaychGetWaitReady(ctx context.Context, sentinel cid.Cid) (address.Address, error) {
return a.PaychMgr.GetPaychWaitReady(ctx, sentinel)
}
func (a *PaychAPI) PaychAllocateLane(ctx context.Context, ch address.Address) (uint64, error) {
return a.PaychMgr.AllocateLane(ctx, ch)
}
func (a *PaychAPI) PaychNewPayment(ctx context.Context, from, to address.Address, vouchers []api.VoucherSpec) (*api.PaymentInfo, error) {
amount := vouchers[len(vouchers)-1].Amount
// TODO: Fix free fund tracking in PaychGet
// TODO: validate voucher spec before locking funds
ch, err := a.PaychGet(ctx, from, to, amount, api.PaychGetOpts{OffChain: false})
if err != nil {
return nil, err
}
lane, err := a.PaychMgr.AllocateLane(ctx, ch.Channel)
if err != nil {
return nil, err
}
svs := make([]*paychtypes.SignedVoucher, len(vouchers))
for i, v := range vouchers {
sv, err := a.PaychMgr.CreateVoucher(ctx, ch.Channel, paychtypes.SignedVoucher{
Amount: v.Amount,
Lane: lane,
Extra: v.Extra,
TimeLockMin: v.TimeLockMin,
TimeLockMax: v.TimeLockMax,
MinSettleHeight: v.MinSettle,
})
if err != nil {
return nil, err
}
if sv.Voucher == nil {
return nil, xerrors.Errorf("Could not create voucher - shortfall of %d", sv.Shortfall)
}
svs[i] = sv.Voucher
}
return &api.PaymentInfo{
Channel: ch.Channel,
WaitSentinel: ch.WaitSentinel,
Vouchers: svs,
}, nil
}
func (a *PaychAPI) PaychList(ctx context.Context) ([]address.Address, error) {
return a.PaychMgr.ListChannels(ctx)
}
func (a *PaychAPI) PaychStatus(ctx context.Context, pch address.Address) (*api.PaychStatus, error) {
ci, err := a.PaychMgr.GetChannelInfo(ctx, pch)
if err != nil {
return nil, err
}
return &api.PaychStatus{
ControlAddr: ci.Control,
Direction: api.PCHDir(ci.Direction),
}, nil
}
func (a *PaychAPI) PaychSettle(ctx context.Context, addr address.Address) (cid.Cid, error) {
return a.PaychMgr.Settle(ctx, addr)
}
func (a *PaychAPI) PaychCollect(ctx context.Context, addr address.Address) (cid.Cid, error) {
return a.PaychMgr.Collect(ctx, addr)
}
func (a *PaychAPI) PaychVoucherCheckValid(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher) error {
return a.PaychMgr.CheckVoucherValid(ctx, ch, sv)
}
func (a *PaychAPI) PaychVoucherCheckSpendable(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, secret []byte, proof []byte) (bool, error) {
return a.PaychMgr.CheckVoucherSpendable(ctx, ch, sv, secret, proof)
}
func (a *PaychAPI) PaychVoucherAdd(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, proof []byte, minDelta types.BigInt) (types.BigInt, error) {
return a.PaychMgr.AddVoucherInbound(ctx, ch, sv, proof, minDelta)
}
// PaychVoucherCreate creates a new signed voucher on the given payment channel
// with the given lane and amount. The value passed in is exactly the value
// that will be used to create the voucher, so if previous vouchers exist, the
// actual additional value of this voucher will only be the difference between
// the two.
// If there are insufficient funds in the channel to create the voucher,
// returns a nil voucher and the shortfall.
func (a *PaychAPI) PaychVoucherCreate(ctx context.Context, pch address.Address, amt types.BigInt, lane uint64) (*api.VoucherCreateResult, error) {
return a.PaychMgr.CreateVoucher(ctx, pch, paychtypes.SignedVoucher{Amount: amt, Lane: lane})
}
func (a *PaychAPI) PaychVoucherList(ctx context.Context, pch address.Address) ([]*paychtypes.SignedVoucher, error) {
vi, err := a.PaychMgr.ListVouchers(ctx, pch)
if err != nil {
return nil, err
}
out := make([]*paychtypes.SignedVoucher, len(vi))
for k, v := range vi {
out[k] = v.Voucher
}
return out, nil
}
func (a *PaychAPI) PaychVoucherSubmit(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, secret []byte, proof []byte) (cid.Cid, error) {
return a.PaychMgr.SubmitVoucher(ctx, ch, sv, secret, proof)
}