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c82d73a826
In this commit, we extend the graph's FetchChannelEdgesByID and HasChannelEdge methods to also check the zombie index whenever the edge to be looked up doesn't exist within the edge index. We do this to signal to callers that the edge is known, but only as a zombie, and the only information that we have about the edge are the node public keys of the two parties involved in the edge. In the event that an edge does exist within the zombie index, we make an additional check on edge policies to ensure they are not within the router's pruning window, indicating that it is a fresh update.
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