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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
'''
Command-line interface to yardstick
'''
import argparse
import logging
from pkg_resources import get_distribution
from argparse import RawDescriptionHelpFormatter
from yardstick.cmd.commands import task
from yardstick.cmd.commands import runner
from yardstick.cmd.commands import scenario
class YardstickCLI():
'''Command-line interface to yardstick'''
# Command categories
categories = {
'task': task.TaskCommands,
'runner': runner.RunnerCommands,
'scenario': scenario.ScenarioCommands
}
def __init__(self):
self._version = 'yardstick version %s ' % \
get_distribution('yardstick').version
def _get_base_parser(self):
'''get base (top level) parser'''
parser = argparse.ArgumentParser(
prog='yardstick',
formatter_class=RawDescriptionHelpFormatter,
description=YardstickCLI.__doc__ or ''
)
# Global options
parser.add_argument(
"-V", "--version",
help="display version",
version=self._version,
action="version"
)
parser.add_argument(
"-d", "--debug",
help="increase output verbosity to debug",
action="store_true"
)
parser.add_argument(
"-v", "--verbose",
help="increase output verbosity to info",
action="store_true"
)
return parser
def _find_actions(self, subparsers, actions_module):
'''find action methods'''
# Find action methods inside actions_module and
# add them to the command parser.
# The 'actions_module' argument may be a class
# or module. Action methods start with 'do_'
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(
command,
description=desc
)
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def _get_parser(self):
'''get a command-line parser'''
parser = self._get_base_parser()
subparsers = parser.add_subparsers(
title='subcommands',
)
# add subcommands
for category in YardstickCLI.categories:
command_object = YardstickCLI.categories[category]()
desc = command_object.__doc__ or ''
subparser = subparsers.add_parser(
category, description=desc,
formatter_class=RawDescriptionHelpFormatter
)
subparser.set_defaults(command_object=command_object)
cmd_subparsers = subparser.add_subparsers(title='subcommands')
self._find_actions(cmd_subparsers, command_object)
return parser
def main(self, argv):
'''run the command line interface'''
# get argument parser
parser = self._get_parser()
# parse command-line
args = parser.parse_args(argv)
# handle global opts
logger = logging.getLogger('yardstick')
logger.setLevel(logging.WARNING)
if args.verbose:
logger.getLogger('yardstick').setLevel(logging.INFO)
if args.debug:
logger.setLevel(logging.DEBUG)
# dispatch to category parser
args.func(args)
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