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multi: add explicit hodl invoice flag to invoice

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Previously it wasn't possible to store a preimage in the invoice
database and signal that a payment should not be settled right away. The
only way to hold a payment was to insert the magic UnknownPreimage value
in the invoice database. This commit introduces a distinct flag to
signal that an invoice is a hold invoice and thereby allows the preimage
to be present in the database already.

Preparation for (key send) hodl invoices for which we already know the
preimage.
This commit is contained in:
Joost Jager
2020-04-08 13:47:10 +02:00
parent bdc0d875bc
commit d416ed59ea
11 changed files with 153 additions and 93 deletions
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3
contractcourt/channel_arbitrator.go
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@@ -1457,8 +1457,7 @@ func (c *ChannelArbitrator) isPreimageAvailable(hash lntypes.Hash) (bool,
return false, err
}
preimageAvailable = invoice.Terms.PaymentPreimage !=
channeldb.UnknownPreimage
preimageAvailable = invoice.Terms.PaymentPreimage != nil
return preimageAvailable, nil
}