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cdist-backup/scripts/cdist
Darko Poljak b819507415 Better document -v option.
2016-11-30 23:25:31 +01:00

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2013 Nico Schottelius (nico-cdist at schottelius.org)
# 2016 Darko Poljak (darko.poljak at gmail.com)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import collections
import logging
# list of beta sub-commands
BETA_COMMANDS = ['install', ]
# list of beta arguments for sub-commands
BETA_ARGS = {
'config': ['jobs', ],
}
def check_positive_int(value):
import argparse
try:
val = int(value)
except ValueError as e:
raise argparse.ArgumentTypeError(
"{} is invalid int value".format(value))
if val <= 0:
raise argparse.ArgumentTypeError(
"{} is invalid positive int value".format(val))
return val
def check_beta(args_dict):
if 'beta' not in args_dict:
args_dict['beta'] = False
# Check only if beta is not enabled: if beta option is specified then
# raise error.
if not args_dict['beta']:
cmd = args_dict['command']
# first check if command is beta
if cmd in BETA_COMMANDS:
raise cdist.CdistBetaRequired(cmd)
# then check if command's argument is beta
if cmd in BETA_ARGS:
for arg in BETA_ARGS[cmd]:
if arg in args_dict and args_dict[arg]:
raise cdist.CdistBetaRequired(cmd, arg)
_verbosity_level = {
0: logging.ERROR,
1: logging.WARNING,
2: logging.INFO,
}
_verbosity_level = collections.defaultdict(
lambda: logging.DEBUG, _verbosity_level)
def commandline():
"""Parse command line"""
import argparse
import cdist.banner
import cdist.config
import cdist.install
import cdist.shell
import shutil
import os
import multiprocessing
# Construct parser others can reuse
parser = {}
# Options _all_ parsers have in common
parser['loglevel'] = argparse.ArgumentParser(add_help=False)
parser['loglevel'].add_argument(
'-d', '--debug',
help=('Set log level to debug (deprecated, use -vvv instead)'),
action='store_true', default=False)
parser['loglevel'].add_argument(
'-v', '--verbose',
help=('Increase log level, be more verbose. Use it more than once '
'to increase log level. The order of levels from the lowest '
'to the greatest are: ERROR, WARNING, INFO, DEBUG.'),
action='count', default=0)
# Main subcommand parser
parser['main'] = argparse.ArgumentParser(
description='cdist ' + cdist.VERSION, parents=[parser['loglevel']])
parser['main'].add_argument(
'-V', '--version', help='Show version', action='version',
version='%(prog)s ' + cdist.VERSION)
parser['sub'] = parser['main'].add_subparsers(
title="Commands", dest="command")
# Banner
parser['banner'] = parser['sub'].add_parser(
'banner', parents=[parser['loglevel']])
parser['banner'].set_defaults(func=cdist.banner.banner)
# Config
parser['config'] = parser['sub'].add_parser(
'config', parents=[parser['loglevel']])
parser['config'].add_argument(
'host', nargs='*', help='host(s) to operate on')
parser['config'].add_argument(
'-b', '--enable-beta',
help=('Enable beta functionalities. Beta functionalities '
'include the following options: -j/--jobs.'),
action='store_true', dest='beta', default=False)
parser['config'].add_argument(
'-c', '--conf-dir',
help=('Add configuration directory (can be repeated, '
'last one wins)'), action='append')
parser['config'].add_argument(
'-f', '--file',
help=('Read additional hosts to operate on from specified file '
'or from stdin if \'-\' (each host on separate line). '
'If no host or host file is specified then, by default, '
'read hosts from stdin.'),
dest='hostfile', required=False)
parser['config'].add_argument(
'-i', '--initial-manifest',
help='Path to a cdist manifest or \'-\' to read from stdin.',
dest='manifest', required=False)
parser['config'].add_argument(
'-j', '--jobs', nargs='?', type=check_positive_int,
help=('Specify the maximum number of parallel jobs, currently '
'only global explorers are supported (currently in beta'),
action='store', dest='jobs',
const=multiprocessing.cpu_count())
parser['config'].add_argument(
'-n', '--dry-run',
help='Do not execute code', action='store_true')
parser['config'].add_argument(
'-o', '--out-dir',
help='Directory to save cdist output in', dest="out_path")
parser['config'].add_argument(
'-p', '--parallel',
help='Operate on multiple hosts in parallel',
action='store_true', dest='parallel')
parser['config'].add_argument(
'-s', '--sequential',
help='Operate on multiple hosts sequentially (default)',
action='store_false', dest='parallel')
# remote-copy and remote-exec defaults are environment variables
# if set; if not then None - these will be futher handled after
# parsing to determine implementation default
parser['config'].add_argument(
'--remote-copy',
help='Command to use for remote copy (should behave like scp)',
action='store', dest='remote_copy',
default=os.environ.get('CDIST_REMOTE_COPY'))
parser['config'].add_argument(
'--remote-exec',
help=('Command to use for remote execution '
'(should behave like ssh)'),
action='store', dest='remote_exec',
default=os.environ.get('CDIST_REMOTE_EXEC'))
parser['config'].set_defaults(func=cdist.config.Config.commandline)
# Install
parser['install'] = parser['sub'].add_parser('install', add_help=False,
parents=[parser['config']])
parser['install'].set_defaults(func=cdist.install.Install.commandline)
# Shell
parser['shell'] = parser['sub'].add_parser(
'shell', parents=[parser['loglevel']])
parser['shell'].add_argument(
'-s', '--shell',
help=('Select shell to use, defaults to current shell. Used shell'
' should be POSIX compatible shell.'))
parser['shell'].set_defaults(func=cdist.shell.Shell.commandline)
for p in parser:
parser[p].epilog = (
"Get cdist at http://www.nico.schottelius.org/software/cdist/")
args = parser['main'].parse_args(sys.argv[1:])
# Loglevels are handled globally in here
if args.debug:
log.warning("-d/--debug is deprecated, use -vvv instead")
args.verbose = 3
logging.root.setLevel(_verbosity_level[args.verbose])
log.debug(args)
log.info("version %s" % cdist.VERSION)
# Work around python 3.3 bug:
# http://bugs.python.org/issue16308
# http://bugs.python.org/issue9253
# FIXME: catching AttributeError also hides
# real problems.. try a different way
# FIXME: we always print main help, not
# the help of the actual parser being used!
try:
getattr(args, "func")
except AttributeError:
parser['main'].print_help()
sys.exit(0)
check_beta(vars(args))
args.func(args)
if __name__ == "__main__":
# Sys is needed for sys.exit()
import sys
cdistpythonversion = '3.2'
if sys.version < cdistpythonversion:
print('Python >= ' + cdistpythonversion +
' is required on the source host.', file=sys.stderr)
sys.exit(1)
exit_code = 0
try:
import os
import re
import cdist
import cdist.log
logging.setLoggerClass(cdist.log.Log)
logging.basicConfig(format='%(levelname)s: %(message)s')
log = logging.getLogger("cdist")
if re.match("__", os.path.basename(sys.argv[0])):
import cdist.emulator
emulator = cdist.emulator.Emulator(sys.argv)
emulator.run()
else:
commandline()
except KeyboardInterrupt:
exit_code = 2
except cdist.Error as e:
log.error(e)
exit_code = 1
sys.exit(exit_code)
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