(fix:faiss) rely on storage abstrct

application/vectorstore/faiss.py

@@ -1,5 +1,6 @@
 import os
 import tempfile
+import io
 
 from langchain_community.vectorstores import FAISS
 
@@ -66,8 +67,26 @@ class FaissStore(BaseVectorStore):
     def add_texts(self, *args, **kwargs):
         return self.docsearch.add_texts(*args, **kwargs)
 
-    def save_local(self, *args, **kwargs):
-        return self.docsearch.save_local(*args, **kwargs)
+    def save_local(self, path):
+        """
+        Save the FAISS index to disk and upload to storage.
+        
+        Args:
+            path: Path where the index should be stored
+        """
+        with tempfile.TemporaryDirectory() as temp_dir:
+            self.docsearch.save_local(temp_dir)
+            
+            with open(os.path.join(temp_dir, "index.faiss"), "rb") as f_faiss:
+                faiss_data = f_faiss.read()
+            
+            with open(os.path.join(temp_dir, "index.pkl"), "rb") as f_pkl:
+                pkl_data = f_pkl.read()
+    
+            self.storage.save_file(io.BytesIO(faiss_data), f"{path}/index.faiss")
+            self.storage.save_file(io.BytesIO(pkl_data), f"{path}/index.pkl")
+        
+        return True
 
     def delete_index(self, *args, **kwargs):
         return self.docsearch.delete(*args, **kwargs)