osc-lib

import argparse from osc_lib.command.command import Command class MyCustomCommand(Command): """My custom OpenStackClient command.""" def get_parser(self, prog_name): parser = super(MyCustomCommand, self).get_parser(prog_name) parser.add_argument( 'name', metavar='<name>', help='Name to greet' ) return parser def take_action(self, parsed_args): # In a real OpenStackClient plugin, 'self.app' and 'self.client_manager' # would provide access to OpenStack services and configuration. # For this example, we'll simulate the output. greeting = f"Hello, {parsed_args.name}! This is a custom command from osc-lib." return {}, {'Result': greeting} # Example of how to instantiate and call (for demonstration, not runnable without OSC context) if __name__ == '__main__': # Simulate `app` and `app_args` that `cliff` (which OSC uses) would pass class MockApp: NAME = 'openstack' def __init__(self): self.options = argparse.Namespace() self.options.debug = False class MockAppArgs: pass mock_app = MockApp() mock_app_args = MockAppArgs() cmd_instance = MyCustomCommand(mock_app, mock_app_args) # Simulate parsed arguments parsed_args = cmd_instance.get_parser('my_command').parse_args(['World']) # Execute the command's action # In a real setup, this would be called by the OpenStackClient framework _columns, _data = cmd_instance.take_action(parsed_args) print(f"Command output: {_data['Result']}")