Merge branch 'L2SS-343-remove-lofareu-namespace-hack' into 'master'

L2SS-343: Remove hack if  lofar.eu namespace doesn't exist

Closes L2SS-343

See merge request !122

devices/clients/opcua_client.py

@@ -51,15 +51,12 @@ class OPCUAConnection(CommClient):
 
 
         # determine namespace used
-        try:
         if type(namespace) is str:
             self.name_space_index = self.client.get_namespace_index(namespace)
         elif type(namespace) is int:
             self.name_space_index = namespace
-
-        except Exception as e:
-            self.streams.error_stream("Could not determine namespace index from namespace: %s: %s", namespace, e)
-            raise Exception("Could not determine namespace index from namespace %s", namespace) from e
+        else:
+            raise TypeError(f"namespace must be of type str or int, but is of type {type(namespace).__name__}")
 
         self.obj = self.client.get_objects_node()
         self.check_nodes()
@@ -135,6 +132,9 @@ class OPCUAConnection(CommClient):
         else:
             raise Exception("OPC-ua mapping requires either a list of the path or dict with the path. Was given %s type containing: %s", type(annotation), annotation)
 
+        # prepend namespace index for each element if none is given
+        path = [name if ':' in name else f'{self.name_space_index}:{name}' for name in path]
+
         try:
             node = self.obj.get_child(path)
         except Exception as e: