akovalenko/lnd.xprv
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
f02590d8c0
lnd.xprv/chainntnfs
History
Wilmer Paulino f02590d8c0
chainntnfs/neutrinonotify: support registration for script confirmations 
In this commit, we extend the NeutrinoNotifier to support registering
scripts for confirmation notifications. Once the script has been
detected as confirmed within the chain, a confirmation notification will
be dispatched to through the Confirmed channel of the ConfirmationEvent
returned upon registration.

For scripts that have confirmed in the past, the `historicalConfDetails`
method has been modified to determine whether the script has been
confirmed by locating the script in an output of a confirmed
transaction.

For scripts that have yet to confirm, a filter update is sent to the
underlying rescan to ensure that we match and dispatch on the script
when processing new blocks.

Along the way, we also address an issue where we'd miss detecting that a
transaction/script has confirmed in the future due to not receiving a
historical dispatch request from the underlying txNotifier. To fix this,
we ensure that we always update our filters to detect the confirmation
at tip, regardless of whether a historical rescan was detected or not.
2019-01-21 13:57:43 -08:00
..
bitcoindnotify chainntnfs/bitcoindnotify: support registration for script confirmations 2019-01-21 13:57:43 -08:00
btcdnotify chainntnfs/btcdnotify: support registration for script confirmations 2019-01-21 13:57:43 -08:00
neutrinonotify chainntnfs/neutrinonotify: support registration for script confirmations 2019-01-21 13:57:43 -08:00
height_hint_cache_test.go chainntnfs: support caching confirm/spend hints for scripts 2019-01-21 13:57:43 -08:00
height_hint_cache.go chainntnfs: support caching confirm/spend hints for scripts 2019-01-21 13:57:43 -08:00
interface_dev.go chainntnfs: switch debug tag to dev 2018-10-05 12:59:34 +09:00
interface_test.go multi: update to latest ChainNotifier impl New method 2019-01-21 13:57:43 -08:00
interface.go chainntnfs/interface: update docs to note support for scripts 2019-01-21 13:57:43 -08:00
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: update tests with new registration changes 2019-01-21 13:57:43 -08:00
txnotifier.go chainntnfs/btcdnotify: support registration for script confirmations 2019-01-21 13:57:43 -08:00

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