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fundingmanager: Add max value to fundingmanager and fundingmanager_test

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This commit is contained in:
vctt94 2018-08-29 18:39:22 -03:00
parent 6845763aa5
commit 2f6a8b13ae
3 changed files with 110 additions and 36 deletions
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20
fundingmanager.go
View File

@ -122,6 +122,7 @@ type reservationWithCtx struct {
// Constraints we require for the remote.
remoteCsvDelay uint16
remoteMinHtlc lnwire.MilliSatoshi
remoteMaxValue lnwire.MilliSatoshi
updateMtx sync.RWMutex
lastUpdated time.Time
@ -1376,7 +1377,7 @@ func (f *fundingManager) handleFundingOpen(fmsg *fundingOpenMsg) {
// Generate our required constraints for the remote party.
remoteCsvDelay := f.cfg.RequiredRemoteDelay(amt)
chanReserve := f.cfg.RequiredRemoteChanReserve(amt, msg.DustLimit)
maxValue := f.cfg.RequiredRemoteMaxValue(amt)
remoteMaxValue := f.cfg.RequiredRemoteMaxValue(amt)
maxHtlcs := f.cfg.RequiredRemoteMaxHTLCs(amt)
minHtlc := f.cfg.DefaultMinHtlcIn
@ -1392,6 +1393,7 @@ func (f *fundingManager) handleFundingOpen(fmsg *fundingOpenMsg) {
chanAmt: amt,
remoteCsvDelay: remoteCsvDelay,
remoteMinHtlc: minHtlc,
remoteMaxValue: remoteMaxValue,
err: make(chan error, 1),
peer: fmsg.peer,
}
@ -1409,7 +1411,7 @@ func (f *fundingManager) handleFundingOpen(fmsg *fundingOpenMsg) {
ChannelConfig: &channeldb.ChannelConfig{
ChannelConstraints: channeldb.ChannelConstraints{
DustLimit: msg.DustLimit,
MaxPendingAmount: maxValue,
MaxPendingAmount: remoteMaxValue,
ChanReserve: chanReserve,
MinHTLC: minHtlc,
MaxAcceptedHtlcs: maxHtlcs,
@ -1451,7 +1453,7 @@ func (f *fundingManager) handleFundingOpen(fmsg *fundingOpenMsg) {
fundingAccept := lnwire.AcceptChannel{
PendingChannelID: msg.PendingChannelID,
DustLimit: ourContribution.DustLimit,
MaxValueInFlight: maxValue,
MaxValueInFlight: remoteMaxValue,
ChannelReserve: chanReserve,
MinAcceptDepth: uint32(numConfsReq),
HtlcMinimum: minHtlc,
@ -1465,6 +1467,7 @@ func (f *fundingManager) handleFundingOpen(fmsg *fundingOpenMsg) {
FirstCommitmentPoint: ourContribution.FirstCommitmentPoint,
UpfrontShutdownScript: ourContribution.UpfrontShutdown,
}
if err := fmsg.peer.SendMessage(true, &fundingAccept); err != nil {
fndgLog.Errorf("unable to send funding response to peer: %v", err)
f.failFundingFlow(fmsg.peer, msg.PendingChannelID, err)
@ -1540,7 +1543,6 @@ func (f *fundingManager) handleFundingAccept(fmsg *fundingAcceptMsg) {
// here so we can properly commit their accepted constraints to the
// reservation.
chanReserve := f.cfg.RequiredRemoteChanReserve(resCtx.chanAmt, msg.DustLimit)
maxValue := f.cfg.RequiredRemoteMaxValue(resCtx.chanAmt)
maxHtlcs := f.cfg.RequiredRemoteMaxHTLCs(resCtx.chanAmt)
// The remote node has responded with their portion of the channel
@ -1552,7 +1554,7 @@ func (f *fundingManager) handleFundingAccept(fmsg *fundingAcceptMsg) {
ChannelConfig: &channeldb.ChannelConfig{
ChannelConstraints: channeldb.ChannelConstraints{
DustLimit: msg.DustLimit,
MaxPendingAmount: maxValue,
MaxPendingAmount: resCtx.remoteMaxValue,
ChanReserve: chanReserve,
MinHTLC: resCtx.remoteMinHtlc,
MaxAcceptedHtlcs: maxHtlcs,
@ -3065,6 +3067,7 @@ func (f *fundingManager) handleInitFundingMsg(msg *initFundingMsg) {
localAmt = msg.localFundingAmt
minHtlcIn = msg.minHtlcIn
remoteCsvDelay = msg.remoteCsvDelay
maxValue = msg.maxValueInFlight
)
// We'll determine our dust limit depending on which chain is active.
@ -3198,6 +3201,11 @@ func (f *fundingManager) handleInitFundingMsg(msg *initFundingMsg) {
minHtlcIn = f.cfg.DefaultMinHtlcIn
}
// If no max value was specified, use the default one.
if maxValue == 0 {
maxValue = f.cfg.RequiredRemoteMaxValue(capacity)
}
// If a pending channel map for this peer isn't already created, then
// we create one, ultimately allowing us to track this pending
// reservation within the target peer.
@ -3211,6 +3219,7 @@ func (f *fundingManager) handleInitFundingMsg(msg *initFundingMsg) {
chanAmt: capacity,
remoteCsvDelay: remoteCsvDelay,
remoteMinHtlc: minHtlcIn,
remoteMaxValue: maxValue,
reservation: reservation,
peer: msg.peer,
updates: msg.updates,
@ -3230,7 +3239,6 @@ func (f *fundingManager) handleInitFundingMsg(msg *initFundingMsg) {
// policy to determine of required commitment constraints for the
// remote party.
chanReserve := f.cfg.RequiredRemoteChanReserve(capacity, ourDustLimit)
maxValue := f.cfg.RequiredRemoteMaxValue(capacity)
maxHtlcs := f.cfg.RequiredRemoteMaxHTLCs(capacity)
fndgLog.Infof("Starting funding workflow with %v for pending_id(%x), "+

106
fundingmanager_test.go
View File

@ -961,7 +961,8 @@ func assertAddedToRouterGraph(t *testing.T, alice, bob *testNode,
// advertised value will be checked against the other node's default min_htlc
// value.
func assertChannelAnnouncements(t *testing.T, alice, bob *testNode,
capacity btcutil.Amount, customMinHtlc ...lnwire.MilliSatoshi) {
capacity btcutil.Amount, customMinHtlc []lnwire.MilliSatoshi,
customMaxHtlc []lnwire.MilliSatoshi) {
t.Helper()
// After the FundingLocked message is sent, Alice and Bob will each
@ -1014,21 +1015,28 @@ func assertChannelAnnouncements(t *testing.T, alice, bob *testNode,
minHtlc, m.HtlcMinimumMsat)
}
// The MaxHTLC value should at this point
// _always_ be the same as the
// maxValueInFlight capacity.
maxHtlc := alice.fundingMgr.cfg.RequiredRemoteMaxValue(
capacity,
)
// We might expect a custom MaxHltc value.
if len(customMaxHtlc) > 0 {
if len(customMaxHtlc) != 2 {
t.Fatalf("only 0 or 2 custom " +
"min htlc values " +
"currently supported")
}
maxHtlc = customMaxHtlc[j]
}
if m.MessageFlags != 1 {
t.Fatalf("expected message flags to "+
"be 1, was %v", m.MessageFlags)
}
maxPendingMsat := alice.fundingMgr.cfg.RequiredRemoteMaxValue(
capacity,
)
if maxPendingMsat != m.HtlcMaximumMsat {
if maxHtlc != m.HtlcMaximumMsat {
t.Fatalf("expected ChannelUpdate to "+
"advertise max HTLC %v, had %v",
maxPendingMsat,
maxHtlc,
m.HtlcMaximumMsat)
}
@ -1214,7 +1222,7 @@ func TestFundingManagerNormalWorkflow(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -1366,7 +1374,7 @@ func TestFundingManagerRestartBehavior(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -1504,7 +1512,7 @@ func TestFundingManagerOfflinePeer(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -1912,7 +1920,7 @@ func TestFundingManagerReceiveFundingLockedTwice(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -2015,7 +2023,7 @@ func TestFundingManagerRestartAfterChanAnn(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -2116,7 +2124,7 @@ func TestFundingManagerRestartAfterReceivingFundingLocked(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
@ -2187,7 +2195,7 @@ func TestFundingManagerPrivateChannel(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// The funding transaction is now confirmed, wait for the
// OpenStatusUpdate_ChanOpen update
@ -2300,7 +2308,7 @@ func TestFundingManagerPrivateRestart(t *testing.T) {
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob, capacity)
assertChannelAnnouncements(t, alice, bob, capacity, nil, nil)
// Note: We don't check for the addedToRouterGraph state because in
// the private channel mode, the state is quickly changed from
@ -2395,6 +2403,8 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
// This is the custom parameters we'll use.
const csvDelay = 67
const minHtlcIn = 1234
const maxValueInFlight = 50000
const fundingAmt = 5000000
// We will consume the channel updates as we go, so no buffering is
// needed.
@ -2413,6 +2423,7 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
localFundingAmt: localAmt,
pushAmt: lnwire.NewMSatFromSatoshis(pushAmt),
private: false,
maxValueInFlight: maxValueInFlight,
minHtlcIn: minHtlcIn,
remoteCsvDelay: csvDelay,
updates: updateChan,
@ -2455,6 +2466,12 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
minHtlcIn, openChannelReq.HtlcMinimum)
}
// Check that the max value in flight is sent as part of OpenChannel.
if openChannelReq.MaxValueInFlight != maxValueInFlight {
t.Fatalf("expected OpenChannel to have MaxValueInFlight %v, got %v",
maxValueInFlight, openChannelReq.MaxValueInFlight)
}
chanID := openChannelReq.PendingChannelID
// Let Bob handle the init message.
@ -2477,6 +2494,14 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
5, acceptChannelResponse.HtlcMinimum)
}
reserve := lnwire.NewMSatFromSatoshis(fundingAmt / 100)
maxValueAcceptChannel := lnwire.NewMSatFromSatoshis(fundingAmt) - reserve
if acceptChannelResponse.MaxValueInFlight != maxValueAcceptChannel {
t.Fatalf("expected AcceptChannel to have MaxValueInFlight %v, got %v",
maxValueAcceptChannel, acceptChannelResponse.MaxValueInFlight)
}
// Forward the response to Alice.
alice.fundingMgr.processFundingAccept(acceptChannelResponse, bob)
@ -2522,6 +2547,27 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
return nil
}
// Helper method for checking the MaxValueInFlight stored for a
// reservation.
assertMaxHtlc := func(resCtx *reservationWithCtx,
expOurMaxValue, expTheirMaxValue lnwire.MilliSatoshi) error {
ourMaxValue :=
resCtx.reservation.OurContribution().MaxPendingAmount
if ourMaxValue != expOurMaxValue {
return fmt.Errorf("expected our maxValue to be %v, "+
"was %v", expOurMaxValue, ourMaxValue)
}
theirMaxValue :=
resCtx.reservation.TheirContribution().MaxPendingAmount
if theirMaxValue != expTheirMaxValue {
return fmt.Errorf("expected their MaxPendingAmount to be %v, "+
"was %v", expTheirMaxValue, theirMaxValue)
}
return nil
}
// Check that the custom channel parameters were properly set in the
// channel reservation.
resCtx, err := alice.fundingMgr.getReservationCtx(bobPubKey, chanID)
@ -2529,7 +2575,7 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
t.Fatalf("unable to find ctx: %v", err)
}
// Alice's CSV delay should be 4 since Bob sent the fedault value, and
// Alice's CSV delay should be 4 since Bob sent the default value, and
// Bob's should be 67 since Alice sent the custom value.
if err := assertDelay(resCtx, 4, csvDelay); err != nil {
t.Fatal(err)
@ -2541,6 +2587,14 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
t.Fatal(err)
}
// The max value in flight Alice can have should be maxValueAcceptChannel,
// which is the default value and the maxium Bob can offer should be
// maxValueInFlight.
if err := assertMaxHtlc(resCtx,
maxValueAcceptChannel, maxValueInFlight); err != nil {
t.Fatal(err)
}
// Also make sure the parameters are properly set on Bob's end.
resCtx, err = bob.fundingMgr.getReservationCtx(alicePubKey, chanID)
if err != nil {
@ -2555,6 +2609,10 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
t.Fatal(err)
}
if err := assertMaxHtlc(resCtx,
maxValueInFlight, maxValueAcceptChannel); err != nil {
t.Fatal(err)
}
// Give the message to Bob.
bob.fundingMgr.processFundingCreated(fundingCreated, alice)
@ -2609,10 +2667,18 @@ func TestFundingManagerCustomChannelParameters(t *testing.T) {
).(*lnwire.FundingLocked)
// Make sure both fundingManagers send the expected channel
// announcements. Alice should advertise the default MinHTLC value of
// announcements.
// Alice should advertise the default MinHTLC value of
// 5, while bob should advertise the value minHtlc, since Alice
// required him to use it.
assertChannelAnnouncements(t, alice, bob, capacity, 5, minHtlcIn)
minHtlcArr := []lnwire.MilliSatoshi{5, minHtlcIn}
// For maxHltc Alice should advertise the default MaxHtlc value of
// maxValueAcceptChannel, while bob should advertise the value
// maxValueInFlight since Alice required him to use it.
maxHtlcArr := []lnwire.MilliSatoshi{maxValueAcceptChannel, maxValueInFlight}
assertChannelAnnouncements(t, alice, bob, capacity, minHtlcArr, maxHtlcArr)
// The funding transaction is now confirmed, wait for the
// OpenStatusUpdate_ChanOpen update

2
rpcserver.go
View File

@ -1710,7 +1710,7 @@ func (r *rpcServer) parseOpenChannelReq(in *lnrpc.OpenChannelRequest,
remoteInitialBalance := btcutil.Amount(in.PushSat)
minHtlcIn := lnwire.MilliSatoshi(in.MinHtlcMsat)
remoteCsvDelay := uint16(in.RemoteCsvDelay)
maxValue := lnwire.MilliSatoshi(in.MaxValueInFlight)
maxValue := lnwire.MilliSatoshi(in.RemoteMaxValueInFlightMsat)
// Ensure that the initial balance of the remote party (if pushing
// satoshis) does not exceed the amount the local party has requested