fix(cache-disk): absolutize store directory and stamp async expiry at write time

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

litellm-rust/crates/cache-disk/src/cache.rs

@@ -102,9 +102,10 @@ impl<S: CacheCodec, D: DiskStore, A: ValueAdapter> BaseCache for DiskCache<S, D,
         context: ExactCacheContext,
     ) -> Result<(), Error> {
         let value = self.adapter.write(self.codec.encode(&value)?);
-        let expire_time = context.ttl.map(|ttl| unix_now() + ttl.as_secs_f64());
+        let ttl = context.ttl;
         let key = key.to_string();
         Self::run_blocking(Arc::clone(&self.store), move |store| {
+            let expire_time = ttl.map(|ttl| unix_now() + ttl.as_secs_f64());
             store.set(&key, value, expire_time, unix_now())
         })
         .await

litellm-rust/crates/cache-disk/src/sqlite.rs

@@ -49,6 +49,7 @@ impl DiskcacheSqliteStore {
     pub fn open(directory: impl AsRef<Path>) -> Result<Self, Error> {
         let directory = directory.as_ref().to_path_buf();
         fs::create_dir_all(&directory).map_err(|_| Error::Unavailable)?;
+        let directory = std::path::absolute(&directory).map_err(|_| Error::Unavailable)?;
         let database = directory.join("cache.db");
         let connection = Connection::open(database).map_err(|_| Error::Unavailable)?;
         connection

litellm-rust/crates/cache-disk/tests/cache.rs

@@ -61,6 +61,25 @@ impl Sandbox {
     }
 }
 
+#[rstest]
+fn relative_store_directory_is_absolutized(sandbox: Sandbox) {
+    let relative = PathBuf::from(format!(
+        ".litellm-cache-disk-{}",
+        sandbox
+            .directory
+            .path()
+            .file_name()
+            .unwrap()
+            .to_string_lossy()
+    ));
+    let store = DiskcacheSqliteStore::open(&relative).unwrap();
+    assert!(store.directory().is_absolute());
+    assert!(store.directory().ends_with(&relative));
+    let directory = store.directory().to_path_buf();
+    drop(store);
+    fs::remove_dir_all(directory).unwrap();
+}
+
 #[derive(Clone, Copy, Debug, Default)]
 struct TextAdapter;