lnd.xprv/chainntnfs
Wilmer Paulino e6b1a27cd7
chainntnfs/neutrinonotify: make filter update synchronous
In this commit, we modify the notifier to handle filter updates
synchronously. We do this to prevent race conditions between new block
notifications and filter updates. Otherwise, it's possible for a new
block to come in that should match our filter, but doesn't due to the
filter being updated after.

We also modify their order so that the filter is updated first. We do
this so we can immediately start watching for the event at tip while the
rescan is ongoing.
2018-10-30 17:59:31 -07:00
..
bitcoindnotify chainntnfs/bitcoindnotify: remove old spend notification handling logic 2018-10-30 17:59:31 -07:00
btcdnotify chainntnfs/btcdnotify: remove old spend notification handling logic 2018-10-30 17:59:31 -07:00
neutrinonotify chainntnfs/neutrinonotify: make filter update synchronous 2018-10-30 17:59:31 -07:00
height_hint_cache_test.go chainntnfs/height_hint_cache_test: add tests for disabled cache 2018-08-26 15:32:09 -07:00
height_hint_cache.go chainntnfs/height_hint_cache: prevent db transactions with no updates 2018-10-30 17:59:31 -07:00
interface_dev.go chainntnfs: switch debug tag to dev 2018-10-05 12:59:34 +09:00
interface_test.go chainntnfs/interface_test: add spend reorg test 2018-10-30 17:59:31 -07:00
interface.go chainntnfs: extend SpendEvent with reorg channel 2018-10-30 17:59:31 -07:00
log.go multi: init subsystem loggers via build pkg 2018-10-05 13:04:45 +09:00
README.md multi: fix formatting issues in packge README's 2017-03-27 16:25:25 -07:00
test_utils.go chainntnfs: switch debug tag to dev 2018-10-05 12:59:34 +09:00
txnotifier_test.go chainntnfs/txnotifier_test: extend tests to handle spend notifications 2018-10-30 17:59:31 -07:00
txnotifier.go chainntnfs/txnotifier: commit height hint after rescan is complete 2018-10-30 17:59:31 -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