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f0911765af
In this commit, we migrate all the code in `channeldb` to only reference the new `kvdb` package rather than `bbolt` directly. In many instances, we need to add two version to fetch a bucket as both read and write when needed. As an example, we add a new `fetchChanBucketRw` function. This function is identical to `fetchChanBucket`, but it will be used to fetch the main channel bucket for all _write_ transactions. We need a new method as you can pass a write transaction where a read is accepted, but not the other way around due to the stronger typing of the new `kvdb` package.
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