implementation of logging and error handling

setup.py

@@ -1,16 +1,49 @@
-import setuptools
+import setuptools, logging
 from pathlib import Path
 from os import environ
 from dotenv import load_dotenv
 
+# Configure the logger
+logger_name = "webqueueapi_install_log"
+logger = logging.getLogger(logger_name)
+logger.setLevel(logging.DEBUG)
+
+# See Formatting Details: https://docs.python.org/3/library/logging.html#logrecord-attributes
+# Example: Jan 28 2021 12:19:28 venv-manager : [INFO] Message
+log_message_format = "%(asctime)s %(name)s : [%(levelname)s] %(message)s"
+# See Time Formatting Details: https://docs.python.org/3.6/library/time.html#time.strftime
+# Example: Jan 28 2021 12:19:28
+log_time_format = "%b %d %Y %H:%M:%S"
+log_formatter = logging.Formatter(log_message_format, log_time_format)
+
+# Configure output to stdout
+stream_handler = logging.StreamHandler()
+stream_handler.setFormatter(log_formatter)
+stream_handler.setLevel(logging.INFO)
+logger.addHandler(stream_handler)
+
+# Configure out to logfile, located in '/tmp/webqueueapi install log.log'
+log_file_path = path.abspath("/tmp/" + logger_name + '.log')
+file_handler = logging.FileHandler(log_file_path)
+file_handler.setFormatter(log_formatter)
+logger.addHandler(file_handler)
+
+# Define and load the package version file
 current_dir = Path(__file__).parent
 version_file_path = Path(current_dir, "VERSION")
 load_dotenv(version_file_path)
 
+# Get the version from the package version file
 VERSION = environ.get("VERSION")
 
+if (VERSION == None or VERSION == ""):
+    logger.error("VERSION has no value: exiting")
+    exit()
+
 python_ldap_version = "3.3.1"
 
+logger.debug("Attempting to install webqueue-api package")
+
 setuptools.setup(
     name="webqueue-api",
     version=VERSION,
@@ -38,4 +71,6 @@
         "mkdocs-material",
         "mkautodoc"
     ]
-)
+)
+
+logger.info("webqueue-api package installed sucessfully")