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multi: allow loop in last hop restriction

Browse Source
pull/152/head
Joost Jager 4 years ago
parent 535e964ec9
commit b69e8cb275
No known key found for this signature in database
GPG Key ID: A61B9D4C393C59C7
6 changed files with 111 additions and 73 deletions
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58
cmd/loop/loopin.go
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@ -7,27 +7,36 @@ import (
"github.com/btcsuite/btcutil"
"github.com/lightninglabs/loop/looprpc"
"github.com/lightninglabs/loop/swap"
"github.com/lightningnetwork/lnd/routing/route"
"github.com/urfave/cli"
)
var loopInCommand = cli.Command{
Name: "in",
Usage: "perform an on-chain to off-chain swap (loop in)",
ArgsUsage: "amt",
Description: `
var (
lastHopFlag = cli.StringFlag{
Name: "last_hop",
Usage: "the pubkey of the last hop to use for this swap",
}
loopInCommand = cli.Command{
Name: "in",
Usage: "perform an on-chain to off-chain swap (loop in)",
ArgsUsage: "amt",
Description: `
Send the amount in satoshis specified by the amt argument off-chain.`,
Flags: []cli.Flag{
cli.Uint64Flag{
Name: "amt",
Usage: "the amount in satoshis to loop in",
},
cli.BoolFlag{
Name: "external",
Usage: "expect htlc to be published externally",
Flags: []cli.Flag{
cli.Uint64Flag{
Name: "amt",
Usage: "the amount in satoshis to loop in",
},
cli.BoolFlag{
Name: "external",
Usage: "expect htlc to be published externally",
},
lastHopFlag,
},
},
Action: loopIn,
}
Action: loopIn,
}
)
func loopIn(ctx *cli.Context) error {
args := ctx.Args()
@ -73,12 +82,25 @@ func loopIn(ctx *cli.Context) error {
return err
}
resp, err := client.LoopIn(context.Background(), &looprpc.LoopInRequest{
req := &looprpc.LoopInRequest{
Amt: int64(amt),
MaxMinerFee: int64(limits.maxMinerFee),
MaxSwapFee: int64(limits.maxSwapFee),
ExternalHtlc: external,
})
}
if ctx.IsSet(lastHopFlag.Name) {
lastHop, err := route.NewVertexFromStr(
ctx.String(lastHopFlag.Name),
)
if err != nil {
return err
}
req.LastHop = lastHop[:]
}
resp, err := client.LoopIn(context.Background(), req)
if err != nil {
return err
}

2
loopin.go
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@ -114,7 +114,7 @@ func newLoopInSwap(globalCtx context.Context, cfg *swapConfig,
// htlc.
log.Infof("Initiating swap request at height %v", currentHeight)
swapResp, err := cfg.server.NewLoopInSwap(globalCtx, swapHash,
request.Amount, senderKey, swapInvoice,
request.Amount, senderKey, swapInvoice, request.LastHop,
)
if err != nil {
return nil, fmt.Errorf("cannot initiate swap: %v", err)

95
looprpc/server.pb.go
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@ -374,6 +374,7 @@ type ServerLoopInRequest struct {
SwapHash []byte `protobuf:"bytes,2,opt,name=swap_hash,json=swapHash,proto3" json:"swap_hash,omitempty"`
Amt uint64 `protobuf:"varint,3,opt,name=amt,proto3" json:"amt,omitempty"`
SwapInvoice string `protobuf:"bytes,4,opt,name=swap_invoice,json=swapInvoice,proto3" json:"swap_invoice,omitempty"`
LastHop []byte `protobuf:"bytes,5,opt,name=last_hop,json=lastHop,proto3" json:"last_hop,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
@ -432,6 +433,13 @@ func (m *ServerLoopInRequest) GetSwapInvoice() string {
return ""
}
func (m *ServerLoopInRequest) GetLastHop() []byte {
if m != nil {
return m.LastHop
}
return nil
}
type ServerLoopInResponse struct {
ReceiverKey []byte `protobuf:"bytes,1,opt,name=receiver_key,json=receiverKey,proto3" json:"receiver_key,omitempty"`
Expiry int32 `protobuf:"varint,2,opt,name=expiry,proto3" json:"expiry,omitempty"`
@ -689,50 +697,51 @@ func init() {
func init() { proto.RegisterFile("server.proto", fileDescriptor_ad098daeda4239f7) }
var fileDescriptor_ad098daeda4239f7 = []byte{
// 677 bytes of a gzipped FileDescriptorProto
// 693 bytes of a gzipped FileDescriptorProto
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}
// Reference imports to suppress errors if they are not otherwise used.

1
looprpc/server.proto
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@ -78,6 +78,7 @@ message ServerLoopInRequest {
bytes swap_hash = 2;
uint64 amt = 3;
string swap_invoice = 4;
bytes last_hop = 5;
}
message ServerLoopInResponse {

3
server_mock_test.go
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@ -11,6 +11,7 @@ import (
"github.com/lightninglabs/loop/test"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing/route"
"github.com/lightningnetwork/lnd/zpay32"
)
@ -127,7 +128,7 @@ func getInvoice(hash lntypes.Hash, amt btcutil.Amount, memo string) (string, err
func (s *serverMock) NewLoopInSwap(ctx context.Context,
swapHash lntypes.Hash, amount btcutil.Amount,
senderKey [33]byte, swapInvoice string) (
senderKey [33]byte, swapInvoice string, lastHop *route.Vertex) (
*newLoopInResponse, error) {
_, receiverKey := test.CreateKey(101)

25
swap_server_client.go
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@ -14,6 +14,7 @@ import (
"github.com/lightninglabs/loop/looprpc"
"github.com/lightninglabs/loop/lsat"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/routing/route"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
@ -40,7 +41,7 @@ type swapServerClient interface {
NewLoopInSwap(ctx context.Context,
swapHash lntypes.Hash, amount btcutil.Amount,
senderKey [33]byte, swapInvoice string) (
senderKey [33]byte, swapInvoice string, lastHop *route.Vertex) (
*newLoopInResponse, error)
}
@ -203,18 +204,22 @@ func (s *grpcSwapServerClient) NewLoopOutSwap(ctx context.Context,
func (s *grpcSwapServerClient) NewLoopInSwap(ctx context.Context,
swapHash lntypes.Hash, amount btcutil.Amount, senderKey [33]byte,
swapInvoice string) (*newLoopInResponse, error) {
swapInvoice string, lastHop *route.Vertex) (*newLoopInResponse, error) {
rpcCtx, rpcCancel := context.WithTimeout(ctx, globalCallTimeout)
defer rpcCancel()
swapResp, err := s.server.NewLoopInSwap(rpcCtx,
&looprpc.ServerLoopInRequest{
SwapHash: swapHash[:],
Amt: uint64(amount),
SenderKey: senderKey[:],
SwapInvoice: swapInvoice,
},
)
req := &looprpc.ServerLoopInRequest{
SwapHash: swapHash[:],
Amt: uint64(amount),
SenderKey: senderKey[:],
SwapInvoice: swapInvoice,
}
if lastHop != nil {
req.LastHop = lastHop[:]
}
swapResp, err := s.server.NewLoopInSwap(rpcCtx, req)
if err != nil {
return nil, err
}

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