78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
"""Display command line usage information
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Usage:
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dcos help --info
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dcos help
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Options:
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--help Show this screen
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--info Show a short description of this subcommand
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--version Show version
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"""
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import dcoscli
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import docopt
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import futures
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from dcos import cmds, emitting, options, subcommand, util
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emitter = emitting.FlatEmitter()
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logger = util.get_logger(__name__)
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def main():
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err = util.configure_logger_from_environ()
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if err is not None:
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emitter.publish(err)
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return 1
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args = docopt.docopt(
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__doc__,
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version='dcos-help version {}'.format(dcoscli.version))
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returncode, err = cmds.execute(_cmds(), args)
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if err is not None:
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emitter.publish(err)
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emitter.publish(options.make_generic_usage_message(__doc__))
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return 1
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return returncode
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def _cmds():
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"""
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:returns: All of the supported commands
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:rtype: list of dcos.cmds.Command
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"""
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return [
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cmds.Command(
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hierarchy=['help'],
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arg_keys=['--info'],
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function=_help),
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]
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def _help(show_info):
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if show_info:
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emitter.publish(__doc__.split('\n')[0])
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return 0
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directory = util.dcos_path()
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logger.debug("DCOS Path: {!r}".format(directory))
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paths = subcommand.list_paths(directory)
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with futures.ThreadPoolExecutor(max_workers=len(paths)) as executor:
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results = executor.map(subcommand.documentation, paths)
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commands_message = options.make_command_summary_string(sorted(results))
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emitter.publish(
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"Command line utility for the Mesosphere Datacenter Operating\n"
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"System (DCOS). The Mesosphere DCOS is a distributed operating\n"
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"system built around Apache Mesos. This utility provides tools\n"
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"for easy management of a DCOS installation.\n")
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emitter.publish("Available DCOS commands:")
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emitter.publish(commands_message)
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emitter.publish(
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"\nGet detailed command description with 'dcos <command> --help'.")
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return 0
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