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b2b57314fa
In this commit, we add a new type (ChannelShell) along with a new method, RestoreChannelShells which allows a caller to insert a series of channel shells into the database. These channel shells will allow a restored node to initiate the DLP protocol and recover their set of existing channels. When we insert a channel shell, we re-create the original link node, and also add the outgoing edge to the channel graph. This way we can be sure that upon start up, we attempt to connect to the remote peers, and that the normal graph query commands will operate as expected.
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