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[chain_redesign] Change behavior of try_get_chain_position

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`TxGraph::try_get_chain_position` used to always exclude unconfirmed
transactions with last_seen value of 0. However, what is the point of
including a transaction in the graph if it cannot be part of the chain
history? Additionally, maybe sometimes we don't wish to use the
last_seen field at all.

The new behavior will consider unconfirmed transactions with last_seen
of 0.
This commit is contained in:
志宇 2023-05-03 11:43:16 +08:00
parent c61995ca97
commit e413d3e424
No known key found for this signature in database
GPG Key ID: F6345C9837C2BDE8
2 changed files with 10 additions and 11 deletions
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12
crates/chain/src/tx_graph.rs
View File

@ -624,11 +624,9 @@ impl<A: Anchor> TxGraph<A> {
chain_tip: BlockId,
txid: Txid,
) -> Result<Option<ObservedAs<&A>>, C::Error> {
let (tx_node, anchors, &last_seen) = match self.txs.get(&txid) {
Some((tx, anchors, last_seen)) if !(anchors.is_empty() && *last_seen == 0) => {
(tx, anchors, last_seen)
}
_ => return Ok(None),
let (tx_node, anchors, last_seen) = match self.txs.get(&txid) {
Some(v) => v,
None => return Ok(None),
};
for anchor in anchors {
@ -657,12 +655,12 @@ impl<A: Anchor> TxGraph<A> {
return Ok(None);
}
}
if conflicting_tx.last_seen_unconfirmed > last_seen {
if conflicting_tx.last_seen_unconfirmed > *last_seen {
return Ok(None);
}
}
Ok(Some(ObservedAs::Unconfirmed(last_seen)))
Ok(Some(ObservedAs::Unconfirmed(*last_seen)))
}
/// Get the position of the transaction in `chain` with tip `chain_tip`.

9
crates/chain/tests/test_tx_graph.rs
View File

@ -717,10 +717,11 @@ fn test_chain_spends() {
ObservedAs::Confirmed(&local_chain.get_block(95).expect("block expected"))
);
// As long the unconfirmed tx isn't marked as seen, chain_spend will return None.
assert!(graph
.get_chain_spend(&local_chain, tip, OutPoint::new(tx_0.txid(), 1))
.is_none());
// Even if unconfirmed tx has a last_seen of 0, it can still be part of a chain spend.
assert_eq!(
graph.get_chain_spend(&local_chain, tip, OutPoint::new(tx_0.txid(), 1)),
Some((ObservedAs::Unconfirmed(0), tx_2.txid())),
);
// Mark the unconfirmed as seen and check correct ObservedAs status is returned.
let _ = graph.insert_seen_at(tx_2.txid(), 1234567);