implements #127: separate log levels

- new config argument loglevel_file, defaults to same as loglevel
- include SpiceEV warnings if log level is DEBUG

data/examples/ebus_toolbox.cfg

@@ -95,6 +95,8 @@ loglevel = INFO
 # set to null to disable logfile creation
 # leave empty to have default [timestamp].log
 logfile =
+# can set different log level for log file
+loglevel_file =
 
 ##### SIMULATION PARAMETERS #####
 # Maximum number of days to simulate, if not set simulate entire schedule

ebus_toolbox/schedule.py

@@ -188,8 +188,14 @@ def run(self, args):
         scenario = self.generate_scenario(args)
 
         logging.info("Running SpiceEV...")
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', UserWarning)
+        if logging.root.level > logging.DEBUG:
+            # don't log SpiceEV warnings for log levels above debug
+            # logging.root.level is lowest of console and file (if present)
+            with warnings.catch_warnings():
+                warnings.simplefilter('ignore', UserWarning)
+                scenario.run('distributed', vars(args).copy())
+        else:
+            # debug: log SpiceEV warnings as well
             scenario.run('distributed', vars(args).copy())
         assert scenario.step_i == scenario.n_intervals, \
             'SpiceEV simulation aborted, see above for details'

ebus_toolbox/util.py

@@ -221,7 +221,10 @@ def nd_interp(input_values, lookup_table):
 def setup_logging(args, time_str):
     # set up logging
     # always to console
-    log_handlers = [logging.StreamHandler()]
+    log_level = vars(logging)[args.loglevel]
+    console = logging.StreamHandler()
+    console.setLevel(log_level)
+    log_handlers = [console]
     if args.logfile is not None:
         # optionally to file in output dir
         if args.logfile:
@@ -230,9 +233,13 @@ def setup_logging(args, time_str):
             log_name = f"{time_str}.log"
         log_path = args.output_directory / log_name
         print(f"Writing log to {log_path}")
-        log_handlers.append(logging.FileHandler(log_path, encoding='utf-8'))
+        file_logger = logging.FileHandler(log_path, encoding='utf-8')
+        log_level_file = vars(logging).get(args.loglevel_file or args.loglevel)
+        file_logger.setLevel(log_level_file)
+        log_handlers.append(file_logger)
+        log_level = min(log_level, log_level_file)
     logging.basicConfig(
-        level=vars(logging)[args.loglevel],
+        level=log_level,
         format="%(asctime)s [%(levelname)s] %(message)s",
         handlers=log_handlers
     )
@@ -338,6 +345,9 @@ def get_args():
     parser.add_argument('--loglevel', default='INFO',
                         choices=logging._nameToLevel.keys(), help='Log level.')
     parser.add_argument('--logfile', default='', help='Log file suffix. null: no log file.')
+    parser.add_argument('--loglevel_file', default='',
+                        choices=list(logging._nameToLevel.keys()) + [''],
+                        help='Log level for file logger.')
 
     # #### SpiceEV PARAMETERS ONLY DEFAULT VALUES NOT IN eBus-Toolbox CONFIG #####
     parser.add_argument('--seed', default=1, type=int, help='set random seed')