Seperate out subcommands and utils; root logger setup begins in __init__ of iottb module

iottb/utils/logger_config.py

@@ -0,0 +1,44 @@
+import json
+import click
+from pathlib import Path
+import logging
+from logging.handlers import RotatingFileHandler
+import sys
+from iottb.contexts import IottbConfig
+from iottb import definitions
+from iottb.definitions import MAX_VERBOSITY, CONSOLE_LOG_FORMATS, APP_NAME, LOGFILE_LOG_FORMAT
+
+loglevel = definitions.LOGLEVEL
+
+
+def setup_logging(verbosity, debug=loglevel):
+    """ Setup root logger for iottb """
+    log_level = loglevel
+    handlers = []
+    date_format = '%Y-%m-%d %H:%M:%S'
+    if verbosity > 0:
+        log_level = logging.WARNING
+        if verbosity > MAX_VERBOSITY:
+            verbosity = MAX_VERBOSITY
+            log_level = logging.INFO
+        assert verbosity <= MAX_VERBOSITY, f'Verbosity must be <= {MAX_VERBOSITY}'
+        console_handler = logging.StreamHandler(sys.stdout)
+        print(str(sys.stdout))
+        console_handler.setFormatter(logging.Formatter(CONSOLE_LOG_FORMATS[verbosity], datefmt=date_format))
+        console_handler.setLevel(logging.DEBUG)  # can keep at debug since it depends on global level?
+        handlers.append(console_handler)
+
+    if debug:
+        log_level = logging.DEBUG
+
+    # Logfile logs INFO+, no debugs though
+    file_handler = RotatingFileHandler(f'{str(definitions.LOGDIR / APP_NAME)}.log', maxBytes=10240, backupCount=5)
+    file_handler.setFormatter(logging.Formatter(LOGFILE_LOG_FORMAT[verbosity], datefmt=date_format))
+    file_handler.setLevel(logging.INFO)
+
+    # finnish root logger setup
+    handlers.append(file_handler)
+    # Force this config to be applied to root logger
+    logging.basicConfig(level=log_level, handlers=handlers, force=True)
+
+