forked from ungleich-public/cdist
223 lines
8.0 KiB
Python
223 lines
8.0 KiB
Python
import argparse
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import cdist
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import multiprocessing
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import os
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import logging
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import collections
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# set of beta sub-commands
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BETA_COMMANDS = set(('install', ))
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# set of beta arguments for sub-commands
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BETA_ARGS = {
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'config': set(('jobs', )),
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}
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EPILOG = "Get cdist at http://www.nico.schottelius.org/software/cdist/"
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# Parser others can reuse
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parser = None
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_verbosity_level = {
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0: logging.ERROR,
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1: logging.WARNING,
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2: logging.INFO,
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}
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_verbosity_level = collections.defaultdict(
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lambda: logging.DEBUG, _verbosity_level)
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def add_beta_command(cmd):
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BETA_COMMANDS.add(cmd)
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def add_beta_arg(cmd, arg):
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if cmd in BETA_ARGS:
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if arg not in BETA_ARGS[cmd]:
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BETA_ARGS[cmd].append(arg)
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else:
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BETA_ARGS[cmd] = set((arg, ))
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def check_beta(args_dict):
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if 'beta' not in args_dict:
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args_dict['beta'] = False
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# Check only if beta is not enabled: if beta option is specified then
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# raise error.
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if not args_dict['beta']:
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cmd = args_dict['command']
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# first check if command is beta
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if cmd in BETA_COMMANDS:
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raise cdist.CdistBetaRequired(cmd)
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# then check if some command's argument is beta
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if cmd in BETA_ARGS:
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for arg in BETA_ARGS[cmd]:
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if arg in args_dict and args_dict[arg]:
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raise cdist.CdistBetaRequired(cmd, arg)
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def check_positive_int(value):
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import argparse
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try:
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val = int(value)
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except ValueError:
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raise argparse.ArgumentTypeError(
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"{} is invalid int value".format(value))
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if val <= 0:
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raise argparse.ArgumentTypeError(
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"{} is invalid positive int value".format(val))
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return val
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def get_parsers():
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global parser
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# Construct parser others can reuse
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if parser:
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return parser
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else:
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parser = {}
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# Options _all_ parsers have in common
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parser['loglevel'] = argparse.ArgumentParser(add_help=False)
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parser['loglevel'].add_argument(
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'-d', '--debug',
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help=('Set log level to debug (deprecated, use -vvv instead)'),
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action='store_true', default=False)
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parser['loglevel'].add_argument(
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'-v', '--verbose',
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help=('Increase the verbosity level. Every instance of -v '
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'increments the verbosity level by one. Its default value '
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'is 0. There are 4 levels of verbosity. The order of levels '
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'from the lowest to the highest are: ERROR (0), '
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'WARNING (1), INFO (2) and DEBUG (3 or higher).'),
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action='count', default=0)
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parser['beta'] = argparse.ArgumentParser(add_help=False)
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parser['beta'].add_argument(
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'-b', '--beta',
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help=('Enable beta functionality. '
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'Can also be enabled using CDIST_BETA env var.'),
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action='store_true', dest='beta',
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default='CDIST_BETA' in os.environ)
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# Main subcommand parser
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parser['main'] = argparse.ArgumentParser(
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description='cdist ' + cdist.VERSION, parents=[parser['loglevel']])
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parser['main'].add_argument(
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'-V', '--version', help='Show version', action='version',
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version='%(prog)s ' + cdist.VERSION)
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parser['sub'] = parser['main'].add_subparsers(
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title="Commands", dest="command")
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# Banner
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parser['banner'] = parser['sub'].add_parser(
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'banner', parents=[parser['loglevel']])
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parser['banner'].set_defaults(func=cdist.banner.banner)
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# Config
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parser['config_main'] = argparse.ArgumentParser(add_help=False)
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parser['config_main'].add_argument(
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'-C', '--cache-path-pattern',
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help=('Specify custom cache path pattern. It can also be set '
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'by CDIST_CACHE_PATH_PATTERN environment variable. If '
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'it is not set then default hostdir is used.'),
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dest='cache_path_pattern',
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default=os.environ.get('CDIST_CACHE_PATH_PATTERN'))
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parser['config_main'].add_argument(
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'-c', '--conf-dir',
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help=('Add configuration directory (can be repeated, '
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'last one wins)'), action='append')
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parser['config_main'].add_argument(
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'-i', '--initial-manifest',
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help='path to a cdist manifest or \'-\' to read from stdin.',
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dest='manifest', required=False)
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parser['config_main'].add_argument(
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'-j', '--jobs', nargs='?',
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type=check_positive_int,
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help=('Specify the maximum number of parallel jobs. Global'
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'explorers, object prepare and object run are supported'
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'(currently in beta'),
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action='store', dest='jobs',
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const=multiprocessing.cpu_count())
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parser['config_main'].add_argument(
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'-n', '--dry-run',
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help='do not execute code', action='store_true')
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parser['config_main'].add_argument(
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'-o', '--out-dir',
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help='directory to save cdist output in', dest="out_path")
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# remote-copy and remote-exec defaults are environment variables
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# if set; if not then None - these will be futher handled after
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# parsing to determine implementation default
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parser['config_main'].add_argument(
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'--remote-copy',
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help='Command to use for remote copy (should behave like scp)',
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action='store', dest='remote_copy',
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default=os.environ.get('CDIST_REMOTE_COPY'))
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parser['config_main'].add_argument(
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'--remote-exec',
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help=('Command to use for remote execution '
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'(should behave like ssh)'),
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action='store', dest='remote_exec',
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default=os.environ.get('CDIST_REMOTE_EXEC'))
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# Config
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parser['config_args'] = argparse.ArgumentParser(add_help=False)
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parser['config_args'].add_argument(
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'host', nargs='*', help='host(s) to operate on')
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parser['config_args'].add_argument(
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'-f', '--file',
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help=('Read specified file for a list of additional hosts to '
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'operate on or if \'-\' is given, read stdin (one host per '
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'line). If no host or host file is specified then, by '
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'default, read hosts from stdin.'),
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dest='hostfile', required=False)
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parser['config_args'].add_argument(
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'-p', '--parallel',
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help='operate on multiple hosts in parallel',
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action='store_true', dest='parallel')
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parser['config_args'].add_argument(
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'-r', '--remote-out-dir',
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help='Directory to save cdist output in on the target host',
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dest="remote_out_path")
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parser['config_args'].add_argument(
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'-s', '--sequential',
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help='operate on multiple hosts sequentially (default)',
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action='store_false', dest='parallel')
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parser['config'] = parser['sub'].add_parser(
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'config', parents=[parser['loglevel'], parser['beta'],
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parser['config_main'],
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parser['config_args']])
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parser['config'].set_defaults(func=cdist.config.Config.commandline)
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# Install
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parser['install'] = parser['sub'].add_parser('install', add_help=False,
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parents=[parser['config']])
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parser['install'].set_defaults(func=cdist.install.Install.commandline)
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# Shell
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parser['shell'] = parser['sub'].add_parser(
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'shell', parents=[parser['loglevel']])
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parser['shell'].add_argument(
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'-s', '--shell',
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help=('Select shell to use, defaults to current shell. Used shell'
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' should be POSIX compatible shell.'))
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parser['shell'].set_defaults(func=cdist.shell.Shell.commandline)
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for p in parser:
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parser[p].epilog = EPILOG
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return parser
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def handle_loglevel(args):
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if args.debug:
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retval = "-d/--debug is deprecated, use -vvv instead"
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args.verbose = 3
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else:
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retval = None
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logging.root.setLevel(_verbosity_level[args.verbose])
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return retval
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