Refactored DocumentService to save document in the filesystem. Fixed docker application

src/file-processor/app/database/connection.py

@@ -10,7 +10,7 @@ from typing import Optional
 from pymongo import MongoClient
 from pymongo.database import Database
 from pymongo.errors import ConnectionFailure, ServerSelectionTimeoutError
-
+from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorDatabase
 from app.config.settings import get_mongodb_url, get_mongodb_database_name
 
 # Global variables for singleton pattern
@@ -18,7 +18,7 @@ _client: Optional[MongoClient] = None
 _database: Optional[Database] = None
 
 
-def create_mongodb_client() -> MongoClient:
+def create_mongodb_client() -> AsyncIOMotorClient:
   """
   Create MongoDB client with connection validation.
 
@@ -32,7 +32,7 @@ def create_mongodb_client() -> MongoClient:
   
   try:
     # Create client with short timeout for fail-fast behavior
-    client = MongoClient(
+    client = AsyncIOMotorClient(
       mongodb_url,
       serverSelectionTimeoutMS=5000,  # 5 seconds timeout
       connectTimeoutMS=5000,
@@ -107,6 +107,15 @@ def get_mongodb_client() -> Optional[MongoClient]:
   return _client
 
 
+def get_extra_args(session):
+  # Build kwargs only if session is provided
+  kwargs = {}
+  if session is not None:
+    kwargs["session"] = session
+  
+  return kwargs
+
+
 def test_database_connection() -> bool:
   """
   Test if database connection is working.
@@ -122,4 +131,4 @@ def test_database_connection() -> bool:
     db.command('ping')
     return True
   except Exception:
-    return False
+    return False