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Remove Store::cached(), consolidate on access_local()

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- Remove CACHED_STORE, cached(), is_stale(), set_store() - redundant
- Convert all Store::cached() callers to use access_local()
- Single Store::load() call remains in access() fallback path

All store access now goes through hippocampus::access() / access_local(),
which handles socket connection or local fallback with caching.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>
This commit is contained in:
Kent Overstreet 2026-04-13 18:11:58 -04:00
parent 09b30d64f2
commit 1d88293ccf
6 changed files with 17 additions and 51 deletions
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28
src/hippocampus/store/persist.rs
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@ -19,36 +19,8 @@ use std::collections::HashMap;
use std::fs;
use std::io::{BufReader, Seek};
use std::path::Path;
use std::sync::Arc;
/// Process-global cached store. Reloads only when log files change.
static CACHED_STORE: tokio::sync::OnceCell<Arc<crate::Mutex<Store>>> =
tokio::sync::OnceCell::const_new();
impl Store {
/// Get or create the process-global cached store.
/// Reloads from disk if log files have changed since last load.
pub async fn cached() -> Result<Arc<crate::Mutex<Store>>> {
let store = CACHED_STORE.get_or_try_init(|| async {
let s = Store::load()?;
Ok::<_, anyhow::Error>(Arc::new(crate::Mutex::new(s)))
}).await?;
{
let mut guard = store.lock().await;
if guard.is_stale() {
*guard = Store::load()?;
}
}
Ok(store.clone())
}
/// Check if the on-disk logs have grown since we loaded.
pub fn is_stale(&self) -> bool {
let nodes_size = fs::metadata(nodes_path()).map(|m| m.len()).unwrap_or(0);
let rels_size = fs::metadata(relations_path()).map(|m| m.len()).unwrap_or(0);
nodes_size != self.loaded_nodes_size || rels_size != self.loaded_rels_size
}
/// Load store from state.bin cache if fresh, otherwise rebuild from capnp logs.
///
/// Staleness check uses log file sizes (not mtimes). Since logs are