refactor: 抽离 AI pipeline 与调度共享能力逻辑

apps/aether-gateway/src/cache/mod.rs

@@ -6,4 +6,6 @@ mod scheduler_affinity;
 pub(crate) use auth_api_key_last_used::AuthApiKeyLastUsedCache;
 pub(crate) use auth_context::AuthContextCache;
 pub(crate) use direct_plan_bypass::DirectPlanBypassCache;
-pub(crate) use scheduler_affinity::{SchedulerAffinityCache, SchedulerAffinityTarget};
+pub(crate) use scheduler_affinity::{
+    SchedulerAffinityCache, SchedulerAffinitySnapshotEntry, SchedulerAffinityTarget,
+};

apps/aether-gateway/src/cache/scheduler_affinity.rs

@@ -1,6 +1,6 @@
 use std::time::Duration;
 
-use aether_cache::ExpiringMap;
+use aether_cache::{ExpiringMap, ExpiringMapFreshEntry};
 pub(crate) use aether_scheduler_core::SchedulerAffinityTarget;
 
 #[derive(Debug, Default)]
@@ -8,6 +8,13 @@ pub(crate) struct SchedulerAffinityCache {
     entries: ExpiringMap<String, SchedulerAffinityTarget>,
 }
 
+#[derive(Debug, Clone)]
+pub(crate) struct SchedulerAffinitySnapshotEntry {
+    pub(crate) cache_key: String,
+    pub(crate) target: SchedulerAffinityTarget,
+    pub(crate) age: Duration,
+}
+
 impl SchedulerAffinityCache {
     pub(crate) fn get_fresh(
         &self,
@@ -31,4 +38,18 @@ impl SchedulerAffinityCache {
     pub(crate) fn remove(&self, cache_key: &str) -> Option<SchedulerAffinityTarget> {
         self.entries.remove(&cache_key.to_string())
     }
+
+    pub(crate) fn fresh_entries(&self, ttl: Duration) -> Vec<SchedulerAffinitySnapshotEntry> {
+        self.entries
+            .snapshot_fresh(ttl)
+            .into_iter()
+            .map(
+                |ExpiringMapFreshEntry { key, value, age }| SchedulerAffinitySnapshotEntry {
+                    cache_key: key,
+                    target: value,
+                    age,
+                },
+            )
+            .collect()
+    }
 }