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Check for valid LSN range in count_deltas

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This commit is contained in:
Konstantin Knizhnik
2022-03-30 12:55:01 +03:00
parent 258b1d4935
commit 8b137dfcd2
1 changed files with 5 additions and 2 deletions
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7
pageserver/src/layered_repository/layer_map.rs
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@@ -120,14 +120,14 @@ impl Div for IntKey {
impl Add for IntKey {
type Output = Self;
fn add(self, rhs: Self) -> Self::Output {
IntKey(self.0 + rhs.0)
IntKey(self.0.wrapping_add(rhs.0))
}
}
impl Sub for IntKey {
type Output = Self;
fn sub(self, rhs: Self) -> Self::Output {
IntKey(self.0 - rhs.0)
IntKey(self.0.wrapping_sub(rhs.0))
}
}
@@ -504,6 +504,9 @@ impl LayerMap {
/// given key and LSN range.
pub fn count_deltas(&self, key_range: &Range<Key>, lsn_range: &Range<Lsn>) -> Result<usize> {
let mut result = 0;
if lsn_range.start >= lsn_range.end {
return Ok(0);
}
let envelope = AABB::from_corners(
[
IntKey(key_range.start.to_i128()),