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Merge pull request #3653 from Roasbeef/external-funding-chainfees

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chainfees: create new chainfees package extracting fees from lnwallet
This commit is contained in:
Olaoluwa Osuntokun authored and GitHub committed 2019-10-31 17:44:00 -07:00
2 parents cc159decf5 777ed104a3
commit 4592f87033
47 files changed
+536 -400
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htlcswitch/link.go
+7 -6
View File
@@ -24,6 +24,7 @@ import (
"github.com/lightningnetwork/lnd/lnpeer"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/queue"
"github.com/lightningnetwork/lnd/ticker"
@@ -199,7 +200,7 @@ type ChannelLinkConfig struct {
// FeeEstimator is an instance of a live fee estimator which will be
// used to dynamically regulate the current fee of the commitment
// transaction to ensure timely confirmation.
FeeEstimator lnwallet.FeeEstimator
FeeEstimator chainfee.Estimator
// hodl.Mask is a bitvector composed of hodl.Flags, specifying breakpoints
// for HTLC forwarding internal to the switch.
@@ -570,7 +571,7 @@ func (l *channelLink) markReestablished() {
// chain in a timely manner. The returned value is expressed in fee-per-kw, as
// this is the native rate used when computing the fee for commitment
// transactions, and the second-level HTLC transactions.
func (l *channelLink) sampleNetworkFee() (lnwallet.SatPerKWeight, error) {
func (l *channelLink) sampleNetworkFee() (chainfee.SatPerKWeight, error) {
// We'll first query for the sat/kw recommended to be confirmed within 3
// blocks.
feePerKw, err := l.cfg.FeeEstimator.EstimateFeePerKW(3)
@@ -587,7 +588,7 @@ func (l *channelLink) sampleNetworkFee() (lnwallet.SatPerKWeight, error) {
// shouldAdjustCommitFee returns true if we should update our commitment fee to
// match that of the network fee. We'll only update our commitment fee if the
// network fee is +/- 10% to our network fee.
func shouldAdjustCommitFee(netFee, chanFee lnwallet.SatPerKWeight) bool {
func shouldAdjustCommitFee(netFee, chanFee chainfee.SatPerKWeight) bool {
switch {
// If the network fee is greater than the commitment fee, then we'll
// switch to it if it's at least 10% greater than the commit fee.
@@ -1061,7 +1062,7 @@ out:
// fee rate to our max fee allocation.
commitFee := l.channel.CommitFeeRate()
maxFee := l.channel.MaxFeeRate(l.cfg.MaxFeeAllocation)
newCommitFee := lnwallet.SatPerKWeight(
newCommitFee := chainfee.SatPerKWeight(
math.Min(float64(netFee), float64(maxFee)),
)
if !shouldAdjustCommitFee(newCommitFee, commitFee) {
@@ -1892,7 +1893,7 @@ func (l *channelLink) handleUpstreamMsg(msg lnwire.Message) {
case *lnwire.UpdateFee:
// We received fee update from peer. If we are the initiator we
// will fail the channel, if not we will apply the update.
fee := lnwallet.SatPerKWeight(msg.FeePerKw)
fee := chainfee.SatPerKWeight(msg.FeePerKw)
if err := l.channel.ReceiveUpdateFee(fee); err != nil {
l.fail(LinkFailureError{code: ErrInvalidUpdate},
"error receiving fee update: %v", err)
@@ -2392,7 +2393,7 @@ func (l *channelLink) HandleChannelUpdate(message lnwire.Message) {
// updateChannelFee updates the commitment fee-per-kw on this channel by
// committing to an update_fee message.
func (l *channelLink) updateChannelFee(feePerKw lnwallet.SatPerKWeight) error {
func (l *channelLink) updateChannelFee(feePerKw chainfee.SatPerKWeight) error {
l.log.Infof("updating commit fee to %v sat/kw", feePerKw)
htlcswitch/link_test.go
+10 -9
View File
@@ -31,6 +31,7 @@ import (
"github.com/lightningnetwork/lnd/lnpeer"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/ticker"
)
@@ -1959,7 +1960,7 @@ func TestChannelLinkBandwidthConsistency(t *testing.T) {
// incoming HTLCs automatically.
coreLink.cfg.HodlMask = hodl.MaskFromFlags(hodl.ExitSettle)
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
t.Fatalf("unable to query fee estimator: %v", err)
@@ -2379,7 +2380,7 @@ func TestChannelLinkBandwidthConsistencyOverflow(t *testing.T) {
aliceMsgs = coreLink.cfg.Peer.(*mockPeer).sentMsgs
)
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
t.Fatalf("unable to query fee estimator: %v", err)
@@ -2630,7 +2631,7 @@ func TestChannelLinkTrimCircuitsPending(t *testing.T) {
// Compute the static fees that will be used to determine the
// correctness of Alice's bandwidth when forwarding HTLCs.
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
t.Fatalf("unable to query fee estimator: %v", err)
@@ -2909,7 +2910,7 @@ func TestChannelLinkTrimCircuitsNoCommit(t *testing.T) {
// Compute the static fees that will be used to determine the
// correctness of Alice's bandwidth when forwarding HTLCs.
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
t.Fatalf("unable to query fee estimator: %v", err)
@@ -3167,7 +3168,7 @@ func TestChannelLinkBandwidthChanReserve(t *testing.T) {
aliceMsgs = coreLink.cfg.Peer.(*mockPeer).sentMsgs
)
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
t.Fatalf("unable to query fee estimator: %v", err)
@@ -3554,8 +3555,8 @@ func TestChannelRetransmission(t *testing.T) {
// deviates from our current fee by more 10% or more.
func TestShouldAdjustCommitFee(t *testing.T) {
tests := []struct {
netFee lnwallet.SatPerKWeight
chanFee lnwallet.SatPerKWeight
netFee chainfee.SatPerKWeight
chanFee chainfee.SatPerKWeight
shouldAdjust bool
}{
@@ -3837,7 +3838,7 @@ func TestChannelLinkUpdateCommitFee(t *testing.T) {
// triggerFeeUpdate is a helper closure to determine whether a fee
// update was triggered and completed properly.
triggerFeeUpdate := func(feeEstimate, newFeeRate lnwallet.SatPerKWeight,
triggerFeeUpdate := func(feeEstimate, newFeeRate chainfee.SatPerKWeight,
shouldUpdate bool) {
t.Helper()
@@ -3898,7 +3899,7 @@ func TestChannelLinkUpdateCommitFee(t *testing.T) {
// Triggering the link to update the fee of the channel with a fee rate
// that exceeds its maximum fee allocation should result in a fee rate
// corresponding to the maximum fee allocation.
const maxFeeRate lnwallet.SatPerKWeight = 207182320
const maxFeeRate chainfee.SatPerKWeight = 207182320
triggerFeeUpdate(maxFeeRate+1, maxFeeRate, true)
}
htlcswitch/mock.go
+5 -5
View File
@@ -28,7 +28,7 @@ import (
"github.com/lightningnetwork/lnd/invoices"
"github.com/lightningnetwork/lnd/lnpeer"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/ticker"
)
@@ -70,13 +70,13 @@ func (m *mockPreimageCache) SubscribeUpdates() *contractcourt.WitnessSubscriptio
}
type mockFeeEstimator struct {
byteFeeIn chan lnwallet.SatPerKWeight
byteFeeIn chan chainfee.SatPerKWeight
quit chan struct{}
}
func (m *mockFeeEstimator) EstimateFeePerKW(
numBlocks uint32) (lnwallet.SatPerKWeight, error) {
numBlocks uint32) (chainfee.SatPerKWeight, error) {
select {
case feeRate := <-m.byteFeeIn:
@@ -86,7 +86,7 @@ func (m *mockFeeEstimator) EstimateFeePerKW(
}
}
func (m *mockFeeEstimator) RelayFeePerKW() lnwallet.SatPerKWeight {
func (m *mockFeeEstimator) RelayFeePerKW() chainfee.SatPerKWeight {
return 1e3
}
@@ -98,7 +98,7 @@ func (m *mockFeeEstimator) Stop() error {
return nil
}
var _ lnwallet.FeeEstimator = (*mockFeeEstimator)(nil)
var _ chainfee.Estimator = (*mockFeeEstimator)(nil)
type mockForwardingLog struct {
sync.Mutex
htlcswitch/switch.go
+3 -2
View File
@@ -18,6 +18,7 @@ import (
"github.com/lightningnetwork/lnd/htlcswitch/hop"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/ticker"
)
@@ -102,7 +103,7 @@ type ChanClose struct {
// This value is only utilized if the closure type is CloseRegular.
// This will be the starting offered fee when the fee negotiation
// process for the cooperative closure transaction kicks off.
TargetFeePerKw lnwallet.SatPerKWeight
TargetFeePerKw chainfee.SatPerKWeight
// Updates is used by request creator to receive the notifications about
// execution of the close channel request.
@@ -1368,7 +1369,7 @@ func (s *Switch) teardownCircuit(pkt *htlcPacket) error {
// then the last parameter should be the ideal fee-per-kw that will be used as
// a starting point for close negotiation.
func (s *Switch) CloseLink(chanPoint *wire.OutPoint, closeType ChannelCloseType,
targetFeePerKw lnwallet.SatPerKWeight) (chan interface{},
targetFeePerKw chainfee.SatPerKWeight) (chan interface{},
chan error) {
// TODO(roasbeef) abstract out the close updates.
htlcswitch/test_utils.go
+3 -2
View File
@@ -32,6 +32,7 @@ import (
"github.com/lightningnetwork/lnd/lntest/wait"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/shachain"
"github.com/lightningnetwork/lnd/ticker"
@@ -286,7 +287,7 @@ func createTestChannel(alicePrivKey, bobPrivKey []byte,
return nil, nil, nil, err
}
estimator := lnwallet.NewStaticFeeEstimator(6000, 0)
estimator := chainfee.NewStaticEstimator(6000, 0)
feePerKw, err := estimator.EstimateFeePerKW(1)
if err != nil {
return nil, nil, nil, err
@@ -1078,7 +1079,7 @@ func newHopNetwork() *hopNetwork {
obfuscator := NewMockObfuscator()
feeEstimator := &mockFeeEstimator{
byteFeeIn: make(chan lnwallet.SatPerKWeight),
byteFeeIn: make(chan chainfee.SatPerKWeight),
quit: make(chan struct{}),
}