import json

import argparse

def load_config(config_file):

"""Loads configuration from a JSON file."""

try:

with open(config_file, 'r') as f:

config = json.load(f)

return config

except FileNotFoundError:

print(f"Error: Config file not found: {config_file}")

return None

except json.JSONDecodeError:

print(f"Error: Invalid JSON format in {config_file}")

return None

def dry_run_with_metadata(config, parameters):

"""Simulates a dry run with injected parameters."""

if config is None:

return

# Access parameters from the config or default values

param1 = parameters.get('param1', config.get('param1', 'default_value_1'))

param2 = parameters.get('param2', config.get('param2', 123))

param3 = parameters.get('param3', config.get('param3', True))

# Simulate some action using the parameters

print(f"Running dry run with param1: {param1}, param2: {param2}, param3: {param3}")

# Replace this with your actual dry-run logic

if __name__ == "__main__":

parser = argparse.ArgumentParser(description="Dry-run script with metadata injection.")

parser.add_argument("config_file", help="Path to the configuration JSON file.")

parser.add_argument("--param1", help="Value for param1 (optional).")

parser.add_argument("--param2", type=int, help="Value for param2 (optional, integer).")

parser.add_argument("--param3", action="store_true", help="Value for param3 (optional, boolean).")

args = parser.parse_args()

config = load_config(args.config_file)

if config:

parameters = {

'param1': args.param1,

'param2': args.param2,

'param3': args.param3

}

dry_run_with_metadata(config, parameters)