32f2b047e8
This commit modifies the invoice registry to handle invoices for which the preimage is not known yet (hodl invoices). In that case, the resolution channel passed in from links and resolvers is stored until we either learn the preimage or want to cancel the htlc.
129 lines
3.5 KiB
Go
129 lines
3.5 KiB
Go
package invoicesrpc
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"fmt"
|
|
|
|
"github.com/btcsuite/btcd/chaincfg"
|
|
"github.com/lightningnetwork/lnd/channeldb"
|
|
"github.com/lightningnetwork/lnd/lnrpc"
|
|
"github.com/lightningnetwork/lnd/zpay32"
|
|
)
|
|
|
|
// CreateRPCInvoice creates an *lnrpc.Invoice from the *channeldb.Invoice.
|
|
func CreateRPCInvoice(invoice *channeldb.Invoice,
|
|
activeNetParams *chaincfg.Params) (*lnrpc.Invoice, error) {
|
|
|
|
paymentRequest := string(invoice.PaymentRequest)
|
|
decoded, err := zpay32.Decode(paymentRequest, activeNetParams)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to decode payment request: %v",
|
|
err)
|
|
}
|
|
|
|
var descHash []byte
|
|
if decoded.DescriptionHash != nil {
|
|
descHash = decoded.DescriptionHash[:]
|
|
}
|
|
|
|
fallbackAddr := ""
|
|
if decoded.FallbackAddr != nil {
|
|
fallbackAddr = decoded.FallbackAddr.String()
|
|
}
|
|
|
|
settleDate := int64(0)
|
|
if !invoice.SettleDate.IsZero() {
|
|
settleDate = invoice.SettleDate.Unix()
|
|
}
|
|
|
|
// Expiry time will default to 3600 seconds if not specified
|
|
// explicitly.
|
|
expiry := int64(decoded.Expiry().Seconds())
|
|
|
|
// The expiry will default to 9 blocks if not specified explicitly.
|
|
cltvExpiry := decoded.MinFinalCLTVExpiry()
|
|
|
|
// Convert between the `lnrpc` and `routing` types.
|
|
routeHints := CreateRPCRouteHints(decoded.RouteHints)
|
|
|
|
preimage := invoice.Terms.PaymentPreimage
|
|
satAmt := invoice.Terms.Value.ToSatoshis()
|
|
satAmtPaid := invoice.AmtPaid.ToSatoshis()
|
|
|
|
isSettled := invoice.Terms.State == channeldb.ContractSettled
|
|
|
|
var state lnrpc.Invoice_InvoiceState
|
|
switch invoice.Terms.State {
|
|
case channeldb.ContractOpen:
|
|
state = lnrpc.Invoice_OPEN
|
|
case channeldb.ContractSettled:
|
|
state = lnrpc.Invoice_SETTLED
|
|
case channeldb.ContractCanceled:
|
|
state = lnrpc.Invoice_CANCELED
|
|
case channeldb.ContractAccepted:
|
|
state = lnrpc.Invoice_ACCEPTED
|
|
default:
|
|
return nil, fmt.Errorf("unknown invoice state %v",
|
|
invoice.Terms.State)
|
|
}
|
|
|
|
rpcInvoice := &lnrpc.Invoice{
|
|
Memo: string(invoice.Memo[:]),
|
|
Receipt: invoice.Receipt[:],
|
|
RHash: decoded.PaymentHash[:],
|
|
Value: int64(satAmt),
|
|
CreationDate: invoice.CreationDate.Unix(),
|
|
SettleDate: settleDate,
|
|
Settled: isSettled,
|
|
PaymentRequest: paymentRequest,
|
|
DescriptionHash: descHash,
|
|
Expiry: expiry,
|
|
CltvExpiry: cltvExpiry,
|
|
FallbackAddr: fallbackAddr,
|
|
RouteHints: routeHints,
|
|
AddIndex: invoice.AddIndex,
|
|
Private: len(routeHints) > 0,
|
|
SettleIndex: invoice.SettleIndex,
|
|
AmtPaidSat: int64(satAmtPaid),
|
|
AmtPaidMsat: int64(invoice.AmtPaid),
|
|
AmtPaid: int64(invoice.AmtPaid),
|
|
State: state,
|
|
}
|
|
|
|
if preimage != channeldb.UnknownPreimage {
|
|
rpcInvoice.RPreimage = preimage[:]
|
|
}
|
|
|
|
return rpcInvoice, nil
|
|
}
|
|
|
|
// CreateRPCRouteHints takes in the decoded form of an invoice's route hints
|
|
// and converts them into the lnrpc type.
|
|
func CreateRPCRouteHints(routeHints [][]zpay32.HopHint) []*lnrpc.RouteHint {
|
|
var res []*lnrpc.RouteHint
|
|
|
|
for _, route := range routeHints {
|
|
hopHints := make([]*lnrpc.HopHint, 0, len(route))
|
|
for _, hop := range route {
|
|
pubKey := hex.EncodeToString(
|
|
hop.NodeID.SerializeCompressed(),
|
|
)
|
|
|
|
hint := &lnrpc.HopHint{
|
|
NodeId: pubKey,
|
|
ChanId: hop.ChannelID,
|
|
FeeBaseMsat: hop.FeeBaseMSat,
|
|
FeeProportionalMillionths: hop.FeeProportionalMillionths,
|
|
CltvExpiryDelta: uint32(hop.CLTVExpiryDelta),
|
|
}
|
|
|
|
hopHints = append(hopHints, hint)
|
|
}
|
|
|
|
routeHint := &lnrpc.RouteHint{HopHints: hopHints}
|
|
res = append(res, routeHint)
|
|
}
|
|
|
|
return res
|
|
}
|