fix(core): remove all unwraps, fix unpolled futures, and fix search index memory leak on restart

server/src/search.rs

@@ -30,11 +30,14 @@ impl MemoryIndex {
         let schema = schema_builder.build();
 
         let index_dir = store_dir.join("tantivy_index");
-        std::fs::create_dir_all(&index_dir).unwrap();
+        std::fs::create_dir_all(&index_dir)
+            .map_err(|e| tantivy::TantivyError::SystemError(e.to_string()))?;
         let index = Index::open_in_dir(&index_dir)
-            .unwrap_or_else(|_| Index::create_in_dir(&index_dir, schema.clone()).unwrap());
+            .or_else(|_| Index::create_in_dir(&index_dir, schema.clone()))?;
 
-        let writer = index.writer(50_000_000)?;
+        let mut writer = index.writer(50_000_000)?;
+        writer.delete_all_documents()?;
+        writer.commit()?;
         let reader = index
             .reader_builder()
             .reload_policy(ReloadPolicy::OnCommitWithDelay)