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Add a full-stack mint and burn test for Bitcoin and Monero

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Fixes where ram_scanned is updated in processor. The prior version, while safe,
would redo massive amounts of work during periods of inactivity. It also hit an
undocumented invariant where get_eventuality_completions assumes new blocks,
yet redone work wouldn't have new blocks.

Modifies Monero's generate_blocks to return the hashes of the generated blocks.
This commit is contained in:
Luke Parker
2023-08-28 16:18:11 -04:00
parent 1838c37ecf
commit 285422f71a
9 changed files with 723 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
processor/src/networks/mod.rs
View File

@@ -336,6 +336,8 @@ pub trait Network: 'static + Send + Sync + Clone + PartialEq + Eq + Debug {
/// Get the registered eventualities completed within this block, and any prior blocks which
/// registered eventualities may have been completed in.
///
/// This will panic if not fed a new block.
async fn get_eventuality_completions(
&self,
eventualities: &mut EventualitiesTracker<Self::Eventuality>,

54
processor/src/scanner.rs
View File

@@ -394,6 +394,8 @@ impl<N: Network, D: Db> Scanner<N, D> {
// only written to/read by this thread
// There's also no error caused by them being unexpectedly written (if the commit is
// made and then the processor suddenly reboots)
// There's also no issue if this code is run multiple times (due to code after
// aborting)
if let Some(id) = ScannerDb::<N, D>::block(&scanner.db, i) {
if id != block_id {
panic!("reorg'd from finalized {} to {}", hex::encode(id), hex::encode(block_id));
@@ -416,34 +418,18 @@ impl<N: Network, D: Db> Scanner<N, D> {
txn.commit();
}
// Clone network because we can't borrow it while also mutably borrowing the
// eventualities
// Thankfully, network is written to be a cheap clone
let network = scanner.network.clone();
for (id, tx) in
network.get_eventuality_completions(&mut scanner.eventualities, &block).await
{
// This should only happen if there's a P2P net desync or there's a malicious
// validator
warn!(
"eventuality {} resolved by {}, as found on chain. this should not happen",
hex::encode(id),
hex::encode(&tx)
);
if !scanner.emit(ScannerEvent::Completed(id, tx)) {
return;
}
}
let outputs = match scanner.network.get_outputs(&block, key).await {
Ok(outputs) => outputs,
Err(_) => {
warn!("Couldn't scan block {i}");
warn!("couldn't scan block {i}");
break;
}
};
// Write this number as scanned so we won't perform any of the following mutations
// multiple times
scanner.ram_scanned.insert(key_vec.clone(), i);
// Panic if we've already seen these outputs
for output in &outputs {
let id = output.id();
@@ -493,6 +479,30 @@ impl<N: Network, D: Db> Scanner<N, D> {
scanner.ram_outputs.insert(id);
}
// Clone network because we can't borrow it while also mutably borrowing the
// eventualities
// Thankfully, network is written to be a cheap clone
let network = scanner.network.clone();
// TODO: This get_eventuality_completions call will panic if called multiple times over
// the same blocks (such as when checking multiple keys under the current layout),
// as get_eventuality_completions assumes it's always only fed a future block
for (id, tx) in
network.get_eventuality_completions(&mut scanner.eventualities, &block).await
{
// This should only happen if there's a P2P net desync or there's a malicious
// validator
warn!(
"eventuality {} resolved by {}, as found on chain. this should not happen",
hex::encode(id),
hex::encode(&tx)
);
if !scanner.emit(ScannerEvent::Completed(id, tx)) {
return;
}
}
// Don't emit an event if there's not any outputs
if outputs.is_empty() {
continue;
}
@@ -507,8 +517,6 @@ impl<N: Network, D: Db> Scanner<N, D> {
if !scanner.emit(ScannerEvent::Block { block: block_id, outputs }) {
return;
}
// Write this number as scanned so we won't re-fire these outputs
scanner.ram_scanned.insert(key_vec.clone(), i);
}
}
}