- Better error reporting.

- Flask now uses application's logger instead of its own.
- ucloud file scanner refactored.

ucloud/common/etcd_wrapper.py

@@ -27,7 +27,7 @@ def readable_errors(func):
     @wraps(func)
     def wrapper(*args, **kwargs):
         try:
-            func(*args, **kwargs)
+            return func(*args, **kwargs)
         except etcd3.exceptions.ConnectionFailedError as err:
             raise etcd3.exceptions.ConnectionFailedError('etcd connection failed') from err
         except etcd3.exceptions.ConnectionTimeoutError as err: