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carry stats across eviction & on-demand download

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This commit is contained in:
Christian Schwarz
2023-02-02 14:22:37 +01:00
committed by Christian Schwarz
parent 63ad7c4461
commit 8ce21eb7e3
6 changed files with 139 additions and 12 deletions
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libs/pageserver_api/src/models.rs
+8
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@@ -253,12 +253,20 @@ pub struct LayerAccessStatFullDetails {
pub access_kind: LayerAccessKind,
}
#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
#[serde(tag = "kind")]
pub enum LayerResidenceStatus {
Resident { timestamp_millis_since_epoch: u128 },
Evicted { timestamp_millis_since_epoch: u128 },
}
#[derive(Debug, Clone, Serialize)]
pub struct LayerAccessStats {
pub access_count_by_access_kind: HashMap<LayerAccessKind, u64>,
pub task_kind_access_flag: Vec<&'static str>,
pub first: Option<LayerAccessStatFullDetails>,
pub most_recent: Vec<LayerAccessStatFullDetails>,
pub most_recent_residence_changes: Vec<LayerResidenceStatus>,
}
#[derive(Debug, Copy, Clone, Serialize, Deserialize)]