oslo-config

import sys from oslo_config import cfg import os # Define a configuration group and options CONF = cfg.CONF common_opts = [ cfg.StrOpt('bind_host', default='0.0.0.0', help='IP address to listen on'), cfg.IntOpt('bind_port', default=8080, help='Port to listen on'), cfg.BoolOpt('debug', default=False, help='Enable debug logging') ] # Register options CONF.register_opts(common_opts, group='DEFAULT') # You can also register options in a specific group api_group = cfg.OptGroup(name='api', title='API Options') CONF.register_group(api_group) api_opts = [ cfg.StrOpt('url', default='http://localhost:8080', help='Base URL for the API'), cfg.IntOpt('timeout', default=30, help='API request timeout in seconds') ] CONF.register_opts(api_opts, group=api_group) # Example config file content (save as 'app.conf') # [DEFAULT] # bind_host = 127.0.0.1 # debug = True # # [api] # url = https://api.example.com # Parse command line arguments and config files # For testing, we simulate args and a config file # In a real app, you'd use: CONF(sys.argv[1:], project='myproject', default_config_files=['/etc/myproject/app.conf']) # Create a dummy config file for demonstration config_file_path = 'app.conf' with open(config_file_path, 'w') as f: f.write('[DEFAULT]\n') f.write('bind_host = 127.0.0.1\n') f.write('debug = True\n') f.write('\n[api]\n') f.write('url = https://api.example.com\n') # Simulate CLI args (e.g., --debug=false --api-timeout=60) sys_args = ['program_name', '--config-file', config_file_path, '--api-timeout', '60'] # oslo.config needs to be explicitly parsed. The first argument is the program name. # We use os.environ.get for security (e.g., if a secret was passed as an env var) CONF(args=sys_args[1:], project='myproject') print(f"Bind Host: {CONF.bind_host}") print(f"Bind Port: {CONF.bind_port}") print(f"Debug Mode: {CONF.debug}") print(f"API URL: {CONF.api.url}") print(f"API Timeout: {CONF.api.timeout}") # Clean up the dummy config file os.remove(config_file_path)