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Document expectations on Eventuality task and correct code determining the block safe to scan/report

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This commit is contained in:
Luke Parker
2024-08-20 19:37:47 -04:00
parent 155ad48f4c
commit 74d3075dae
5 changed files with 65 additions and 278 deletions
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14
processor/scanner/src/report.rs
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@@ -19,18 +19,20 @@ struct ReportTask<D: Db, S: ScannerFeed> {
impl<D: Db, S: ScannerFeed> ContinuallyRan for ReportTask<D, S> {
async fn run_iteration(&mut self) -> Result<bool, String> {
let highest_reportable = {
// Fetch the latest scanned and latest checked block
// Fetch the next to scan block
let next_to_scan = ScannerDb::<S>::next_to_scan_for_outputs_block(&self.db)
.expect("ReportTask run before writing the start block");
let next_to_check = ScannerDb::<S>::next_to_check_for_eventualities_block(&self.db)
.expect("ReportTask run before writing the start block");
// If we haven't done any work, return
if (next_to_scan == 0) || (next_to_check == 0) {
if next_to_scan == 0 {
return Ok(false);
}
// The last scanned block is the block prior to this
#[allow(clippy::let_and_return)]
let last_scanned = next_to_scan - 1;
let last_checked = next_to_check - 1;
last_scanned.min(last_checked)
// The last scanned block is the highest reportable block as we only scan blocks within a
// window where it's safe to immediately report the block
// See `eventuality.rs` for more info
last_scanned
};
let next_to_potentially_report = ScannerDb::<S>::next_to_potentially_report_block(&self.db)