L2SS-375: add archiving load monitoring

devices/toolkit/archiver.py

@@ -287,6 +287,20 @@ class Archiver():
         else:
             logger.warning(f"Attribute {attribute_name} not found!")
     
+    def get_attribute_failures(self,attribute_name:str):
+        """
+        Return the attribute failure archiving frequency in events/minute 
+        """
+        if (len(attribute_name.split('/'))!=4): 
+            raise AttributeFormatException
+        if self.is_attribute_archived(attribute_name):
+            fail_dict = dict((a,r) for a,r in zip(self.es.AttributeList,self.es.AttributeFailureFreqList))
+            for f in fail_dict:
+                if attribute_name.lower() in f:
+                    return fail_dict.get(f,0.)
+        else:
+            logger.warning(f"Attribute {attribute_name} not found!")
+    
 class AttributeFormatException(Exception):
     """
     Exception that handles wrong attribute naming