import os import sys import pathlib import argparse from lbry.conf import Config, CLIConfig from lbry.service import API, Daemon from lbry.service.metadata import interface from lbry.service.full_node import FullNode from lbry.blockchain.ledger import Ledger from lbry.console import Advanced as AdvancedConsole, Basic as BasicConsole def split_subparser_argument(parent, original, name, condition): new_sub_parser = argparse._SubParsersAction( original.option_strings, original._prog_prefix, original._parser_class, metavar=original.metavar ) new_sub_parser._name_parser_map = original._name_parser_map new_sub_parser._choices_actions = [ a for a in original._choices_actions if condition(original._name_parser_map[a.dest]) ] group = argparse._ArgumentGroup(parent, name) group._group_actions = [new_sub_parser] return group class ArgumentParser(argparse.ArgumentParser): def __init__(self, *args, group_name=None, **kwargs): super().__init__(*args, formatter_class=HelpFormatter, add_help=False, **kwargs) self.add_argument( '--help', dest='help', action='store_true', default=False, help='Show this help message and exit.' ) self._optionals.title = 'Options' if group_name is None: self.epilog = ( f"Run 'lbrynet COMMAND --help' for more information on a command or group." ) else: self.epilog = ( f"Run 'lbrynet {group_name} COMMAND --help' for more information on a command." ) self.set_defaults(group=group_name, group_parser=self) def format_help(self): formatter = self._get_formatter() formatter.add_usage( self.usage, self._actions, self._mutually_exclusive_groups ) formatter.add_text(self.description) # positionals, optionals and user-defined groups for action_group in self._granular_action_groups: formatter.start_section(action_group.title) formatter.add_text(action_group.description) formatter.add_arguments(action_group._group_actions) formatter.end_section() formatter.add_text(self.epilog) return formatter.format_help() @property def _granular_action_groups(self): if self.prog != 'lbrynet': yield from self._action_groups return yield self._optionals action: argparse._SubParsersAction = self._positionals._group_actions[0] yield split_subparser_argument( self, action, "Grouped Commands", lambda parser: 'group' in parser._defaults ) yield split_subparser_argument( self, action, "Commands", lambda parser: 'group' not in parser._defaults ) def error(self, message): self.print_help(argparse._sys.stderr) self.exit(2, f"\n{message}\n") class HelpFormatter(argparse.HelpFormatter): def add_usage(self, usage, actions, groups, prefix='Usage: '): super().add_usage( usage, [a for a in actions if a.option_strings != ['--help']], groups, prefix ) def add_command_parser(parent, method_name, command): short = command['desc']['text'][0] if command['desc'] else '' subcommand = parent.add_parser(command['name'], help=short) subcommand.set_defaults(api_method_name=method_name, command=command['name'], doc=command['help']) def get_argument_parser(): root = ArgumentParser( 'lbrynet', description='An interface to the LBRY Network.', allow_abbrev=False, ) root.add_argument( '-v', '--version', dest='cli_version', action="store_true", help='Show lbrynet CLI version and exit.' ) root.set_defaults(group=None, command=None) CLIConfig.contribute_to_argparse(root) sub = root.add_subparsers(metavar='COMMAND') start = sub.add_parser( 'start', usage='lbrynet start [--config FILE] [--data-dir DIR] [--wallet-dir DIR] [--download-dir DIR] ...', help='Start LBRY Network interface.' ) start.add_argument( '--full-node', dest='full_node', action="store_true", help='Start a full node with local blockchain data, requires lbrycrd.' ) start.add_argument( '--quiet', dest='quiet', action="store_true", help='Disable all console output.' ) start.add_argument( '--no-logging', dest='no_logging', action="store_true", help='Disable all logging of any kind.' ) start.add_argument( '--verbose', nargs="*", help=('Enable debug output for lbry logger and event loop. Optionally specify loggers for which debug output ' 'should selectively be applied.') ) start.add_argument( '--initial-headers', dest='initial_headers', help='Specify path to initial blockchain headers, faster than downloading them on first run.' ) Config.contribute_to_argparse(start) start.set_defaults(command='start', start_parser=start, doc=start.format_help()) groups = {} for group_name in sorted(interface['groups']): group_parser = sub.add_parser(group_name, group_name=group_name, help=interface['groups'][group_name]) groups[group_name] = group_parser.add_subparsers(metavar='COMMAND') nicer_order = ['stop', 'get', 'publish', 'resolve'] for command_name in sorted(interface['commands']): if command_name not in nicer_order: nicer_order.append(command_name) for command_name in nicer_order: command = interface['commands'][command_name] if command.get('group') is None: add_command_parser(sub, command_name, command) else: add_command_parser(groups[command['group']], command_name, command) return root def ensure_directory_exists(path: str): if not os.path.isdir(path): pathlib.Path(path).mkdir(parents=True, exist_ok=True) def main(argv=None): argv = argv or sys.argv[1:] parser = get_argument_parser() args, command_args = parser.parse_known_args(argv) conf = Config.create_from_arguments(args) for directory in (conf.data_dir, conf.download_dir, conf.wallet_dir): ensure_directory_exists(directory) if args.cli_version: from lbry import __version__ print(f"lbrynet {__version__}") elif args.command == 'start': if args.help: args.start_parser.print_help() elif args.full_node: service = FullNode(Ledger(conf), conf.db_url_or_default) if conf.console == "advanced": console = AdvancedConsole(service) else: console = BasicConsole(service) return Daemon(service, console).run() else: print('Only `start --full-node` is currently supported.') elif args.command is not None: doc = args.doc api_method_name = args.api_method_name if args.help: print(doc) else: parsed = docopt(doc, command_args) params = set_kwargs(parsed) asyncio.get_event_loop().run_until_complete(execute_command(conf, api_method_name, params)) elif args.group is not None: args.group_parser.print_help() else: parser.print_help() return 0 if __name__ == "__main__": sys.exit(main())