90 lines
4.0 KiB
Python
90 lines
4.0 KiB
Python
import argparse
|
|
import os
|
|
from EHSExceptions import ArgumentException
|
|
|
|
from CustomLogger import logger, setDebugMode
|
|
|
|
class EHSArguments:
|
|
"""
|
|
EHSArguments is a singleton class that handles command-line arguments for the EHS Sentinel script.
|
|
Attributes:
|
|
CONFIGFILE (str): Path to the configuration file.
|
|
DRYRUN (bool): Flag indicating if the script should run in dry run mode.
|
|
DUMPFILE (str): Path to the dump file.
|
|
_instance (EHSArguments): Singleton instance of the class.
|
|
Methods:
|
|
__new__(cls, *args, **kwargs): Ensures only one instance of the class is created.
|
|
__init__(self): Initializes the class, parses command-line arguments, and sets attributes.
|
|
"""
|
|
|
|
CONFIGFILE = ''
|
|
DRYRUN = False
|
|
DUMPFILE = ''
|
|
|
|
_instance = None
|
|
|
|
def __new__(cls, *args, **kwargs):
|
|
"""
|
|
Create and return a new instance of the class, ensuring that only one instance exists (singleton pattern).
|
|
This method overrides the default behavior of object creation to implement the singleton pattern.
|
|
It checks if an instance of the class already exists; if not, it creates a new instance and marks it as uninitialized.
|
|
Args:
|
|
*args: Variable length argument list.
|
|
**kwargs: Arbitrary keyword arguments.
|
|
Returns:
|
|
EHSArguments: The singleton instance of the EHSArguments class.
|
|
"""
|
|
|
|
if not cls._instance:
|
|
cls._instance = super(EHSArguments, cls).__new__(cls, *args, **kwargs)
|
|
cls._instance._initialized = False
|
|
return cls._instance
|
|
|
|
def __init__(self):
|
|
"""
|
|
Initializes the EHSArguments class, parses command-line arguments, and sets up configuration.
|
|
This method performs the following steps:
|
|
1. Checks if the class has already been initialized to prevent re-initialization.
|
|
2. Sets up an argument parser to handle command-line arguments.
|
|
3. Parses the command-line arguments and validates them.
|
|
4. Checks if the specified config file and dump file exist.
|
|
5. Sets the class attributes based on the parsed arguments.
|
|
Raises:
|
|
ArgumentException: If the required arguments are not provided or if the specified files do not exist.
|
|
"""
|
|
if self._initialized:
|
|
return
|
|
self._initialized = True
|
|
logger.debug("init EHSArguments")
|
|
parser = argparse.ArgumentParser(description="Process some integers.")
|
|
parser.add_argument('--configfile', type=str, required=True, help='Config file path')
|
|
parser.add_argument('--dumpfile', type=str, required=False, help='File Path for where the Dumpfile should be written to or read from if dryrun flag is set too.')
|
|
parser.add_argument('--dryrun', action='store_true', default=False, required=False, help='Run the script in dry run mode, data will be read from DumpFile and not MQTT Message will be sent.')
|
|
parser.add_argument('--clean-known-devices', action='store_true', default=False, required=False, help='Cleans the know Devices Topic on Startup.')
|
|
parser.add_argument('-v', '--verbose', action='store_true', default=False, required=False, help='Enable verbose mode')
|
|
|
|
args = parser.parse_args()
|
|
|
|
if args.verbose:
|
|
setDebugMode()
|
|
|
|
logger.debug(args)
|
|
|
|
if args.dryrun:
|
|
if args.dumpfile is None:
|
|
raise ArgumentException(argument="--dumpfile")
|
|
else:
|
|
if not os.path.isfile(args.dumpfile):
|
|
raise ArgumentException(argument=args.dumpfile, message="Dump File does not exist")
|
|
|
|
# Check if the config file exists
|
|
if not os.path.isfile(args.configfile):
|
|
raise ArgumentException(argument=args.configfile, message="Config File does not exist")
|
|
|
|
self.CONFIGFILE = args.configfile
|
|
self.DUMPFILE = args.dumpfile
|
|
self.DRYRUN = args.dryrun
|
|
self.CLEAN_KNOWN_DEVICES = args.clean_known_devices
|
|
|
|
|