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In this commit, we fix an existing bug related to duplicate invoice settle.s Before this commit, the second (and later) times an invoice was settled we would return a nil pointer. This would result in the new invoiceRegistry panicing as it would go to attempt to notify with a nil invoice. We fix this by returning the invoice on disk (unmodified) for each settle after the initial one. Fixes #1568.
channeldb
The channeldb implements the persistent storage engine for lnd and
generically a data storage layer for the required state within the Lightning
Network. The backing storage engine is
boltdb, an embedded pure-go key-value store
based off of LMDB.
The package implements an object-oriented storage model with queries and mutations flowing through a particular object instance rather than the database itself. The storage implemented by the objects includes: open channels, past commitment revocation states, the channel graph which includes authenticated node and channel announcements, outgoing payments, and invoices
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/channeldb