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chainntnfs/txnotifier: commit height hint after rescan is complete

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In this commit, we'll now commit the current height of the TxNotifier as
the height hint for an outpoint/transaction after a rescan has been
completed and has determined that the outpoint is unspent/transaction is
unconfirmed. We do this to prevent another potentially long rescan if
the daemon is restarted before a new block comes in (which is when the
hints will be updated again).
This commit is contained in:
Wilmer Paulino 2018-10-14 17:52:09 -07:00
parent 6458868ba0
commit 60a1d73e08
No known key found for this signature in database
GPG Key ID: 6DF57B9F9514972F
1 changed files with 25 additions and 0 deletions
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25
chainntnfs/txnotifier.go
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@ -447,6 +447,20 @@ func (n *TxNotifier) UpdateConfDetails(txid chainhash.Hash,
if details == nil {
Log.Debugf("Conf details for txid=%v not found during "+
"historical dispatch, waiting to dispatch at tip", txid)
// We'll commit the current height as the confirm hint to
// prevent another potentially long rescan if we restart before
// a new block comes in.
err := n.confirmHintCache.CommitConfirmHint(
n.currentHeight, txid,
)
if err != nil {
// The error is not fatal as this is an optimistic
// optimization, so we'll avoid returning an error.
Log.Debugf("Unable to update confirm hint to %d for "+
"%v: %v", n.currentHeight, txid, err)
}
return nil
}
@ -792,6 +806,17 @@ func (n *TxNotifier) updateSpendDetails(op wire.OutPoint,
// If the historical rescan was not able to find a spending transaction
// for this outpoint, then we can track the spend at tip.
if details == nil {
// We'll commit the current height as the spend hint to prevent
// another potentially long rescan if we restart before a new
// block comes in.
err := n.spendHintCache.CommitSpendHint(n.currentHeight, op)
if err != nil {
// The error is not fatal as this is an optimistic
// optimization, so we'll avoid returning an error.
Log.Debugf("Unable to update spend hint to %d for %v: %v",
n.currentHeight, op, err)
}
return nil
}