lnd.xprv/chainntnfs
Wilmer Paulino 6be642a033
chainntnfs: cache confirm hints within TxConfNotifier
In this commit, we extend our TxConfNotifier to cache height hints for
our confirmation events. Each transaction we've requested a confirmation
notification for will have its initial height hint cached. We increment
this height hint at every new block for unconfirmed transactions. This
allows us to retrieve the *exact* height at which the transaction has
been included in a block. By doing this, we optimize the different
ChainNotifier implementations since they will no longer have to scan
forward (and possibly fetch blocks in the neutrino/pruned node case)
from the initial height hint looking for the confirmation.
2018-08-21 12:55:50 -04:00
..
bitcoindnotify chainntnfs: add ChainNotifier test interface for test methods 2018-08-11 22:45:03 -07:00
btcdnotify chainntnfs: add ChainNotifier test interface for test methods 2018-08-11 22:45:03 -07:00
neutrinonotify chainntnfs: add ChainNotifier test interface for test methods 2018-08-11 22:45:03 -07:00
height_hint_cache_test.go chainntnfs: add height hint cache interfaces and channeldb implementation 2018-08-21 12:55:49 -04:00
height_hint_cache.go chainntnfs: add height hint cache interfaces and channeldb implementation 2018-08-21 12:55:49 -04:00
interface_debug.go chainntnfs: add ChainNotifier test interface for test methods 2018-08-11 22:45:03 -07:00
interface_test.go chaintnfs/interface_test: test notifiers handling missed blocks 2018-08-11 22:45:25 -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: cache confirm hints within TxConfNotifier 2018-08-21 12:55:50 -04:00
txconfnotifier.go chainntnfs: cache confirm hints within TxConfNotifier 2018-08-21 12:55:50 -04:00

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