some logs improvement

smartvalue.py

@@ -1,4 +1,5 @@
 #import appdaemon.plugins.hass.hassapi as hass
+from contextlib import nullcontext
 from datetime import datetime
 from adexpressioncontext import ADExpressionContext
 from expressionparser import ExpressionParser,ParsingException,EvaluationException
@@ -31,6 +32,8 @@ class Evaluator():
         
         self.__no_log_prefix = parser.parse_args('no_log_prefix',False) #as no_log_prefix is used to feedback parser error, it need to be defined first
         expression_name = parser.parse_args('expression_name',None)
+        log_group = parser.parse_args('log_group',None)
+        self.__log_group = str(log_group if log_group is not None else expression_name or 'value')
         if expression_name:
             self.__debug_log_prefixes.append(f"[{expression_name}]")
 
@@ -96,7 +99,17 @@ class Evaluator():
         self.__debug_log_prefixes.pop()
         return result
 
+    def __log_group_scope(self):
+        # SmartObject itself implements LoggerInterface, but many evaluators are
+        # constructed with only the app as their API and no logger_interface kwarg.
+        logger = self.__logger_interface or self.__appdaemon_api
+        group_scope = getattr(logger, 'log_group', None)
+        if callable(group_scope):
+            return group_scope(self.__log_group)
+        return nullcontext()
+
     def evaluate(self,log = True):
+        with self.__log_group_scope():
             try: result = self.__evaluate()
             except EvaluationException as e: 
                 self.__log(f"{e}",level = "ERROR")
@@ -220,6 +233,10 @@ class Evaluator():
             self.__state_callbacks_handle = list()
 
     def __trigger_callbacks(self,trigger_reason,triggered_from_activation = False):
+        with self.__log_group_scope():
+            return self.__trigger_callbacks_in_group(trigger_reason, triggered_from_activation)
+
+    def __trigger_callbacks_in_group(self,trigger_reason,triggered_from_activation = False):
         has_log_trigger_reason = False
         has_evaluation_result = False
 

virtualsensors.py

@@ -761,4 +761,5 @@ class VirtualSensors():
 class VirtualSensorsApp(hass.Hass):
     def initialize(self):
         self.logger_interface = LoggerInterface(self.get_ad_api(),default_log = "virtualsensors_log")
+        with self.logger_interface.log_group("App Initialization"):            
             self.virtual_sensors = VirtualSensors(ad_api = self.get_ad_api(),logger_interface = self.logger_interface,yaml_block = self.args,args_to_ignore_in_validation = ['module','class','global_dependencies','priority','name','config_path'],app_name = self.name)