import argparse import subprocess import time import os from datetime import datetime # Global variable definition BREAK_TIME_SECONDS = 5 class AttemptException(Exception): """A custom exception for maximum number of attempts.""" pass def parse_time_to_seconds(time_str): """ Convert a time string (e.g., '1h', '30min', '45s') to seconds. """ units = {"s": 1, "min": 60, "h": 3600} if time_str[-3:] in units: number, unit = time_str[:-3], time_str[-3:] elif time_str[-2:] in units: number, unit = time_str[:-2], time_str[-2:] elif time_str[-1:] in units: number, unit = time_str[:-1], time_str[-1:] else: raise ValueError("Invalid time unit") return int(number) * units[unit] def check_service_active(service_name): """ Check if a systemd service is currently active or activating. """ result = subprocess.run(['systemctl', 'is-active', service_name], stdout=subprocess.PIPE) service_status = result.stdout.decode('utf-8').strip() is_active = service_status in ['active', 'activating'] print(f"Service {service_name} is {'active' if is_active else 'not active'}.") return is_active def check_any_service_active(services): """ Check if any service in a given list is active or activating. """ return any(check_service_active(service) for service in services) def filter_services(services, ignored_services): """ Filter out services that are in the ignored_services list from services list. """ return [service for service in services if service not in ignored_services] def wait_for_all_services_to_stop(filtered_services, max_attempts, attempt): """ Wait until all services in the list have stopped, with a maximum number of attempts. """ for service in filtered_services: while check_service_active(service): attempt += 1 if attempt > max_attempts: raise AttemptException(f"Maximum attempts ({max_attempts}) reached. Exiting.") print(f"{datetime.now().isoformat()}#{attempt}/{max_attempts}: Waiting for {BREAK_TIME_SECONDS} seconds for {service} to stop...") time.sleep(BREAK_TIME_SECONDS) return attempt def get_max_attempts(timeout_sec): return timeout_sec // BREAK_TIME_SECONDS def append_suffix_to_services(services, suffix=".cymais"): """ Append a specified suffix to each service name in the list. """ return [service + suffix for service in services] def main(services, ignored_services, timeout_sec): """ Main function to process the command-line arguments and perform actions. """ services_with_suffix = append_suffix_to_services(services) filtered_services = filter_services(services_with_suffix, ignored_services) print(f"Services to handle: {services_with_suffix}") print(f"Services to ignore: {ignored_services}") print(f"Services filtered: {filtered_services}") print("Waiting for services to stop.") attempt = 0 max_attempts = get_max_attempts(timeout_sec) while check_any_service_active(filtered_services): attempt = wait_for_all_services_to_stop(filtered_services, max_attempts, attempt) print("All required services have stopped.") if __name__ == "__main__": parser = argparse.ArgumentParser(description='Blocks the code execution as long as defined services are running. Terminates with 0 when all services stopped') parser.add_argument('services', nargs='+', help='List of services to apply the action to.') parser.add_argument('--ignore', nargs='*', help='List of services to ignore in the action.', default=[]) parser.add_argument('--timeout', help='Timeout for lock actions (e.g., 1h, 30min, 45s).', default='1min') args = parser.parse_args() services = args.services ignored_services = args.ignore if args.ignore else [] timeout_seconds = parse_time_to_seconds(args.timeout) main(services, ignored_services, timeout_seconds)