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eb2f5cecf6
This commit removes the breach transaction from the arguments passed to NewBreachRetribution. We already keep all prior remote commitments on disk in the commitment log, and load that transaction from disk inside the method. In practice, the one loaded from disk will be the same one that is passed in by the caller, so there should be no change in behavior as we've already derived the appropriate state number. This changes makes integration with the watchtower client simpler, since we no longer need to acquire the breaching commitment transaction to be able to construct the BreachRetribution. This simplifies not only the logic surrounding transient backsups, but also on startup (and later, retroactively backing up historic updates).
lnwallet
The lnwallet package implements an abstracted wallet controller that is able to drive channel funding workflows, a number of script utilities, witness generation functions for the various Lightning scripts, revocation key derivation, and the commitment update state machine.
The package is used within lnd as the core wallet of the daemon. The wallet
itself is composed of several distinct interfaces that decouple the
implementation of things like signing and blockchain access. This separation
allows new WalletController implementations to be easily dropped into
lnd without disrupting the code base. A series of integration tests at the
interface level are also in place to ensure conformance of the implementation
with the interface.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/lnwallet