lnd.xprv/chainntnfs
Valentine Wallace 79cbea1c9c
chainntnfs: enable notifiers to catch up on missed blocks
This resolves the situation where a notifier's chain backend skips a series of blocks, causing the notifier to need to dispatch historical block notifications to clients.

Additionally, if the current notifier's best block has been reorged out, this logic enables the notifier to rewind to the common ancestor between the current chain and the outdated best block and dispatches notifications from the ancestor.
2018-08-10 01:08:58 -07:00
..
bitcoindnotify chainntnfs: enable notifiers to catch up on missed blocks 2018-08-10 01:08:58 -07:00
btcdnotify chainntnfs: enable notifiers to catch up on missed blocks 2018-08-10 01:08:58 -07:00
neutrinonotify chainntnfs: enable notifiers to catch up on missed blocks 2018-08-10 01:08:58 -07:00
interface_test.go multi: update to latest RegisterBlockEpochNtfn interface 2018-08-10 01:08:57 -07:00
interface.go chainntnfs: enable notifiers to catch up on missed blocks 2018-08-10 01:08:58 -07:00
log.go lnd: remove seelog logger 2017-06-25 14:19:56 +01:00
queue_test.go chainntnfs: Implement unbounded concurrent-safe FIFO queue. 2017-11-16 15:15:22 -08:00
queue.go chainntnfs: Implement unbounded concurrent-safe FIFO queue. 2017-11-16 15:15:22 -08:00
README.md multi: fix formatting issues in packge README's 2017-03-27 16:25:25 -07:00
txconfnotifier_test.go chainntnfs/txconfnotifier: make confirmation notifcation registration async 2018-07-31 18:23:25 -07:00
txconfnotifier.go chainntnfs/txconfnotifier: make confirmation notifcation registration async 2018-07-31 18:23:25 -07:00

chainntnfs

Build Status MIT licensed GoDoc

The chainntnfs package implements a set of interfaces which allow callers to receive notifications in response to specific on-chain events. The set of notifications available include:

  • Notifications for each new block connected to the current best chain.
  • Notifications once a txid has reached a specified number of confirmations.
  • Notifications once a target outpoint (txid:index) has been spent.

These notifications are used within lnd in order to properly handle the workflows for: channel funding, cooperative channel closures, forced channel closures, channel contract breaches, sweeping time-locked outputs, and finally pruning the channel graph.

This package is intentionally general enough to be applicable outside the specific use cases within lnd outlined above. The current sole concrete implementation of the ChainNotifier interface depends on btcd.

Installation and Updating

$ go get -u github.com/lightningnetwork/lnd/chainntnfs