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eugene b7de0eae93
chainntnfs/neutrinonotify: make chainUpdates a buffered chan 
ConcurrentQueue has internal structures so if a filterUpdate exists
in it, the idea of draining the queue may not work reliably. The
update may exist in the ConcurrentQueue but may not be available via
ChanOut() when we're ready to drain the ConcurrentQueue. Fix this by
using a regular buffered chan, which will either have the update or
not have the update. Its size is set to 100 as our tests may generate
quite a bit of updates.
2021-08-27 14:12:01 -04:00
..
bitcoindnotify mod+kvdb+channeldb: use btcwallet new DB interface 2021-08-04 14:55:55 +02:00
btcdnotify mod+kvdb+channeldb: use btcwallet new DB interface 2021-08-04 14:55:55 +02:00
neutrinonotify chainntnfs/neutrinonotify: make chainUpdates a buffered chan 2021-08-27 14:12:01 -04:00
test mod+kvdb+channeldb: use btcwallet new DB interface 2021-08-04 14:55:55 +02:00
height_hint_cache_test.go mod+kvdb+channeldb: use btcwallet new DB interface 2021-08-04 14:55:55 +02:00
height_hint_cache.go multi: use kvdb.Backend for height hint DB 2021-08-04 14:55:51 +02:00
interface_dev.go chainntnfs: switch debug tag to dev 2018-10-05 12:59:34 +09:00
interface.go trivial: typo fix 2020-08-13 07:33:52 +08:00
log.go multi: init subsystem loggers via build pkg 2018-10-05 13:04:45 +09:00
README.md multi: unify code blocks in READMEs 2021-01-22 09:14:11 +01:00
test_utils.go kvdb: move channeldb/kvdb to top level 2021-05-07 14:18:56 +02:00
txnotifier_test.go txnotifier test: add test for confirmation after cancellation 2020-09-16 11:23:02 +02:00
txnotifier.go chainntnfs: skip conf dispatch if ntfn already dispatched 2021-08-27 14:11:55 -04:00

README.md

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