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lnd/chainntnfs
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Wilmer Paulino 1323c92947
chainntnfs/btcdnotify: support registration for script confirmations 
In this commit, we extend the BtcdNotifier 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 skip the txindex and go straight to scanning
the chain manually if confirmation request is for a script. When
scanning the chain, we'll 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, they will be properly tracked
within the TxNotifier.
2019-01-21 13:57:43 -08:00
..
bitcoindnotify chainntnfs/bitcoindnotify: add chainParams parameter to bitcoindnotify.New 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: clean up neutrinonotify.New 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