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invoicesrpc: expose selectHopHints

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selectHopHints is the function which constructs hophints otherwise found
in an invoice created with the private flag.

In this commit, we expose that functionality a little more to workaround
needing to create an invoice to retrieve routing hints. Of course, this
is not a perfect solution as the functionality is exposed exclusively to
go users.
This commit is contained in:
Harsha Goli 2021-09-06 15:36:49 -07:00
parent f901d450a5
commit e4891a98fd
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GPG key ID: 90E00CCB1C74C611
1 changed files with 3 additions and 3 deletions
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6
lnrpc/invoicesrpc/addinvoice.go
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@ -391,7 +391,7 @@ func AddInvoice(ctx context.Context, cfg *AddInvoiceConfig,
// We'll restrict the number of individual route hints
// to 20 to avoid creating overly large invoices.
numMaxHophints := 20 - len(forcedHints)
hopHints := selectHopHints(
hopHints := SelectHopHints(
amtMSat, cfg, filteredChannels, numMaxHophints,
)
@ -553,12 +553,12 @@ func addHopHint(hopHints *[]func(*zpay32.Invoice),
)
}
// selectHopHints will select up to numMaxHophints from the set of passed open
// SelectHopHints will select up to numMaxHophints from the set of passed open
// channels. The set of hop hints will be returned as a slice of functional
// options that'll append the route hint to the set of all route hints.
//
// TODO(roasbeef): do proper sub-set sum max hints usually << numChans
func selectHopHints(amtMSat lnwire.MilliSatoshi, cfg *AddInvoiceConfig,
func SelectHopHints(amtMSat lnwire.MilliSatoshi, cfg *AddInvoiceConfig,
openChannels []*channeldb.OpenChannel,
numMaxHophints int) []func(*zpay32.Invoice) {