Minor bugs fixing

devices/toolkit/archiver.py

@@ -217,14 +217,11 @@ class Archiver():
         """
         Update the archiving properties of an attribute already in a subscriber list
         """
-        try:
         self.remove_attribute_from_archiver(attribute_name)
         time.sleep(1)
         self.add_attribute_to_archiver(attribute_name,polling_period,event_period,strategy)
         time.sleep(1)
         self.start_archiving_attribute(attribute_name)
-        except Exception as e:
-            raise Exception from e
     
     def get_subscriber_attributes(self,es_name:str = None):
         """
@@ -353,7 +350,7 @@ class Retriever():
         try:
             [domain, family, member] = device_fqname.split('/')
         except:
-            raise AttributeFormatException
+            raise AttributeFormatException(f"Could not parse device name {device_fqname}. Please provide FQDN, e.g. LTS/Device/1")
         attrs = self.session.query(Attribute).filter(and_(Attribute.domain == domain, Attribute.family == family, \
                                 Attribute.member == member)).all()
         # Returns the representation as set in __repr__ method of the mapper class
@@ -366,7 +363,7 @@ class Retriever():
         try:
             [domain, family, member, name] = attribute_fqname.split('/')
         except:
-            raise AttributeFormatException
+            raise AttributeFormatException(f"Could not parse attribute name {attribute_fqname}. Please provide FQDN, e.g. LTS/Device/1/Attribute")
         try:
             result = self.session.query(Attribute.att_conf_id).filter(and_(Attribute.domain == domain, Attribute.family == family, \
                                     Attribute.member == member, Attribute.name == name)).one()
@@ -385,7 +382,7 @@ class Retriever():
         try:
             [domain, family, member, name] = attribute_fqname.split('/')
         except:
-            raise AttributeFormatException
+            raise AttributeFormatException(f"Could not parse attribute name {attribute_fqname}. Please provide FQDN, e.g. LTS/Device/1/Attribute")
         try:
             result = self.session.query(DataType.data_type).join(Attribute,Attribute.att_conf_data_type_id==DataType.att_conf_data_type_id).\
                         filter(and_(Attribute.domain == domain, Attribute.family == family, Attribute.member == member, Attribute.name == name)).one()
@@ -419,8 +416,6 @@ class Retriever():
                             base_class.data_time <= time_now_db)).order_by(base_class.data_time).all()
         except AttributeError as e:
             raise Exception(f"Empty result! Attribute {attribute_fqname} not found") from e
-        except Exception as e:
-            raise Exception from e
         return result
 
     def get_attribute_value_by_interval(self,attribute_fqname: str, start_time: datetime, stop_time: datetime):
@@ -441,7 +436,5 @@ class Retriever():
                                 base_class.data_time <= str(stop_time))).order_by(base_class.data_time).all()
         except AttributeError as e:
             raise Exception(f"Empty result! Attribute {attribute_fqname} not found") from e
-        except Exception as e:
-            raise Exception from e
         return result