infosave2007
5759de153b
- cache.rs: cosine-similarity store (threshold, TTL, ring buffer), partitioned by routing signature; tracks hit rate and model cost saved - pipeline: embed routing text, look up before the model call (route_source=cache on hit), insert successful responses; stats record cache hits - config [cache] + admin settings card; dashboard shows hit-rate and savings - embedding model resolved from the pool (or first kind="embedding")
112 lines
3.4 KiB
Rust
112 lines
3.4 KiB
Rust
//! Shared gateway state accessible across all request handlers.
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//!
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//! The config-derived part (`Live`) lives behind an `ArcSwap`, which allows
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//! hot-reloading the model pool, routing table, and router connection without
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//! a restart: the admin API validates the new config, builds a new `Live`,
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//! atomically writes the TOML, and swaps the pointer.
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use crate::cache::SemanticCache;
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use crate::config::Config;
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use crate::registry::Registry;
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use crate::router_client::RouterClient;
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use crate::routing::RoutingTable;
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use crate::secrets::SecretStore;
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use crate::stats::Stats;
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use arc_swap::ArcSwap;
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use std::sync::Arc;
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#[derive(Clone)]
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pub struct SharedState(pub Arc<AppState>);
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/// The portion of state that is rebuilt whenever the config changes.
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pub struct Live {
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pub cfg: Config,
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pub registry: Registry,
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pub routing: RoutingTable,
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pub router: RouterClient,
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}
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impl Live {
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pub fn build(cfg: Config, secrets: &SecretStore) -> anyhow::Result<Self> {
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let router = RouterClient::new(&cfg.router)?;
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let registry = Registry::from_config(&cfg, secrets)?;
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let routing = RoutingTable::from_config(&cfg);
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Ok(Self {
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cfg,
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registry,
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routing,
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router,
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})
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}
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}
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pub struct AppState {
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pub live: ArcSwap<Live>,
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pub stats: Arc<Stats>,
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pub cache: Arc<SemanticCache>,
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pub secrets: SecretStore,
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pub config_path: String,
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pub pipeline: crate::pipeline::Pipeline,
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}
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impl std::ops::Deref for SharedState {
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type Target = AppState;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl SharedState {
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pub fn build(cfg: Config, config_path: String) -> anyhow::Result<Self> {
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let secrets_path = sibling(&config_path, "secrets.toml");
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let secrets = SecretStore::load(&secrets_path);
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let stats = Stats::new(&cfg.stats);
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let cache = SemanticCache::new(&cfg.cache);
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let live = Live::build(cfg, &secrets)?;
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Ok(SharedState(Arc::new(AppState {
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live: ArcSwap::from_pointee(live),
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stats,
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cache,
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secrets,
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config_path,
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pipeline: crate::pipeline::Pipeline::new(),
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})))
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}
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/// Current snapshot of the rebuildable state (safe to hold across await points).
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pub fn live(&self) -> Arc<Live> {
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self.0.live.load_full()
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}
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}
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impl AppState {
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/// Replace the config entirely: validate → build → write to disk → swap.
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/// If any step fails, the active state and file are left unchanged.
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pub fn reload(&self, new_cfg: Config) -> anyhow::Result<()> {
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new_cfg.validate()?;
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let live = Live::build(new_cfg.clone(), &self.secrets)?;
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new_cfg.save(&self.config_path)?;
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self.live.store(Arc::new(live));
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Ok(())
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}
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/// Rebuild `Live` from the current config without writing to disk
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/// (e.g. after a secret change — only provider keys changed).
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pub fn rebuild(&self) -> anyhow::Result<()> {
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let cfg = self.live.load_full().cfg.clone();
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let live = Live::build(cfg, &self.secrets)?;
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self.live.store(Arc::new(live));
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Ok(())
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}
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}
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/// Path to file `name` next to `path` (in the same directory).
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fn sibling(path: &str, name: &str) -> String {
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std::path::Path::new(path)
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.parent()
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.map(|d| d.join(name))
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.unwrap_or_else(|| std::path::PathBuf::from(name))
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.to_string_lossy()
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.into_owned()
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}
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