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multi: add height-based invoice expiry

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This commit adds height-based invoice expiry for hodl invoices
that have active htlcs. This allows us to cancel our intentionally
held htlcs before channels are force closed. We only add this for
hodl invoices because we expect regular invoices to automatically
be resolved.

We still keep hodl invoices in the time-based expiry queue,
because we want to expire open invoices that reach their timeout
before any htlcs are added. Since htlcs are added after the
invoice is created, we add new htlcs as they arrive in the
invoice registry. In this commit, we allow adding of duplicate
entries for an invoice to be added to the expiry queue as each
htlc arrives to keep implementation simple. Our cancellation
logic can already handle the case where an entry is already
canceled, so this is ok.
This commit is contained in:
carla
2021-05-11 08:45:29 +02:00
parent ba5aaec632
commit 34de5922ed
10 changed files with 328 additions and 32 deletions
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19
htlcswitch/mock.go
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@ -797,6 +797,20 @@ type mockInvoiceRegistry struct {
cleanup func()
}
type mockChainNotifier struct {
chainntnfs.ChainNotifier
}
// RegisterBlockEpochNtfn mocks a successful call to register block
// notifications.
func (m *mockChainNotifier) RegisterBlockEpochNtfn(*chainntnfs.BlockEpoch) (
*chainntnfs.BlockEpochEvent, error) {
return &chainntnfs.BlockEpochEvent{
Cancel: func() {},
}, nil
}
func newMockRegistry(minDelta uint32) *mockInvoiceRegistry {
cdb, cleanup, err := newDB()
if err != nil {
@ -805,7 +819,10 @@ func newMockRegistry(minDelta uint32) *mockInvoiceRegistry {
registry := invoices.NewRegistry(
cdb,
invoices.NewInvoiceExpiryWatcher(clock.NewDefaultClock()),
invoices.NewInvoiceExpiryWatcher(
clock.NewDefaultClock(), 0, 0, nil,
&mockChainNotifier{},
),
&invoices.RegistryConfig{
FinalCltvRejectDelta: 5,
},