94beabf34b
In this commit, we extend the different ChainNotifier implementations to cache height hints for our spend events. Each outpoint we've requested a spend notification for will have its initial height hint cached. We then increment this height hint at every new block for unspent outpoints. This allows us to retrieve the *exact* height at which the outpoint has been spent. By doing this, we optimize the different ChainNotifier implementations since they will no longer have to rescan forward (and possibly fetch blocks in the neutrino/pruned node case) from the initial height hint. |
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|---|---|---|
| .. | ||
| bitcoindnotify | ||
| btcdnotify | ||
| neutrinonotify | ||
| height_hint_cache_test.go | ||
| height_hint_cache.go | ||
| interface_debug.go | ||
| interface_test.go | ||
| interface.go | ||
| log.go | ||
| queue_test.go | ||
| queue.go | ||
| README.md | ||
| txconfnotifier_test.go | ||
| txconfnotifier.go | ||
chainntnfs
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
txidhas 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