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routing+refactor: let BlindedEdge carry BlindedPayment

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This commit is purely a refactor. In it, we let the `BlindedEdge` struct
carry a pointer to the `BlindedPayment` that it was derived from. This
is done now because later on in the PR series, we will need more
information about the `BlindedPayment` that an edge was derived from.

Since we now pass in the whole BlindedPayment, we swap out the
`cipherText` member for a `hopIndex` member so that we dont carry around
two sources of truth in the same struct.
This commit is contained in:
Elle Mouton
2024-05-13 13:44:56 +02:00
parent a9655357ca
commit f7a9aa875e
6 changed files with 109 additions and 60 deletions
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62
routing/blinding_test.go
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@ -128,7 +128,9 @@ func TestBlindedPaymentToHints(t *testing.T) {
HtlcMaximum: htlcMax,
Features: features,
}
require.Nil(t, blindedPayment.toRouteHints())
hints, err := blindedPayment.toRouteHints()
require.NoError(t, err)
require.Nil(t, hints)
// Populate the blinded payment with hops.
blindedPayment.BlindedPath.BlindedHops = []*sphinx.BlindedHopInfo{
@ -146,41 +148,43 @@ func TestBlindedPaymentToHints(t *testing.T) {
},
}
policy1 := &models.CachedEdgePolicy{
TimeLockDelta: cltvDelta,
MinHTLC: lnwire.MilliSatoshi(htlcMin),
MaxHTLC: lnwire.MilliSatoshi(htlcMax),
FeeBaseMSat: lnwire.MilliSatoshi(baseFee),
FeeProportionalMillionths: lnwire.MilliSatoshi(
ppmFee,
),
ToNodePubKey: func() route.Vertex {
return vb2
},
ToNodeFeatures: features,
}
policy2 := &models.CachedEdgePolicy{
ToNodePubKey: func() route.Vertex {
return vb3
},
ToNodeFeatures: features,
}
blindedEdge1, err := NewBlindedEdge(policy1, blindedPayment, 0)
require.NoError(t, err)
blindedEdge2, err := NewBlindedEdge(policy2, blindedPayment, 1)
require.NoError(t, err)
expected := RouteHints{
v1: {
//nolint:lll
&BlindedEdge{
policy: &models.CachedEdgePolicy{
TimeLockDelta: cltvDelta,
MinHTLC: lnwire.MilliSatoshi(htlcMin),
MaxHTLC: lnwire.MilliSatoshi(htlcMax),
FeeBaseMSat: lnwire.MilliSatoshi(baseFee),
FeeProportionalMillionths: lnwire.MilliSatoshi(
ppmFee,
),
ToNodePubKey: func() route.Vertex {
return vb2
},
ToNodeFeatures: features,
},
blindingPoint: blindedPoint,
cipherText: cipherText,
},
blindedEdge1,
},
vb2: {
&BlindedEdge{
policy: &models.CachedEdgePolicy{
ToNodePubKey: func() route.Vertex {
return vb3
},
ToNodeFeatures: features,
},
cipherText: cipherText,
},
blindedEdge2,
},
}
actual := blindedPayment.toRouteHints()
actual, err := blindedPayment.toRouteHints()
require.NoError(t, err)
require.Equal(t, len(expected), len(actual))
for vertex, expectedHint := range expected {