import argparse import cdist import multiprocessing import logging import collections import functools import cdist.configuration # set of beta sub-commands BETA_COMMANDS = set(('install', 'inventory', )) # set of beta arguments for sub-commands BETA_ARGS = { 'config': set(('jobs', 'tag', 'all_tagged_hosts', 'use_archiving', )), } EPILOG = "Get cdist at http://www.nico.schottelius.org/software/cdist/" # Parser others can reuse parser = None _verbosity_level_off = -2 _verbosity_level = { _verbosity_level_off: logging.OFF, -1: logging.ERROR, 0: logging.WARNING, 1: logging.INFO, 2: logging.VERBOSE, 3: logging.DEBUG, 4: logging.TRACE, } # Generate verbosity level constants: # VERBOSE_OFF, VERBOSE_ERROR, VERBOSE_WARNING, VERBOSE_INFO, VERBOSE_VERBOSE, # VERBOSE_DEBUG, VERBOSE_TRACE. this_globals = globals() for level in _verbosity_level: const = 'VERBOSE_' + logging.getLevelName(_verbosity_level[level]) this_globals[const] = level # All verbosity levels above 4 are TRACE. _verbosity_level = collections.defaultdict( lambda: logging.TRACE, _verbosity_level) def add_beta_command(cmd): BETA_COMMANDS.add(cmd) def add_beta_arg(cmd, arg): if cmd in BETA_ARGS: if arg not in BETA_ARGS[cmd]: BETA_ARGS[cmd].append(arg) else: BETA_ARGS[cmd] = set((arg, )) 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 some 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) def check_lower_bounded_int(value, lower_bound, name): try: val = int(value) except ValueError: raise argparse.ArgumentTypeError( "{} is invalid int value".format(value)) if val < lower_bound: raise argparse.ArgumentTypeError( "{} is invalid {} value".format(val, name)) return val def get_parsers(): global parser # Construct parser others can reuse if parser: return parser else: parser = {} # Options _all_ parsers have in common parser['loglevel'] = argparse.ArgumentParser(add_help=False) parser['loglevel'].add_argument( '-l', '--log-level', metavar='LOGLEVEL', type=functools.partial(check_lower_bounded_int, lower_bound=-1, name="log level"), help=('Set the specified verbosity level. ' 'The levels, in order from the lowest to the highest, are: ' 'ERROR (-1), WARNING (0), INFO (1), VERBOSE (2), DEBUG (3) ' 'TRACE (4 or higher). If used along with -v then -v ' 'increases last set value and -l overwrites last set ' 'value.'), action='store', dest='verbose', required=False) parser['loglevel'].add_argument( '-q', '--quiet', help='Quiet mode: disables logging, including WARNING and ERROR.', action='store_true', default=False) parser['loglevel'].add_argument( '-v', '--verbose', help=('Increase the verbosity level. Every instance of -v ' 'increments the verbosity level by one. Its default value ' 'is 0 which includes ERROR and WARNING levels. ' 'The levels, in order from the lowest to the highest, are: ' 'ERROR (-1), WARNING (0), INFO (1), VERBOSE (2), DEBUG (3) ' 'TRACE (4 or higher). If used along with -l then -l ' 'overwrites last set value and -v increases last set ' 'value.'), action='count', default=None) parser['beta'] = argparse.ArgumentParser(add_help=False) parser['beta'].add_argument( '-b', '--beta', help=('Enable beta functionality. '), action='store_true', dest='beta', default=False) # 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) parser['inventory_common'] = argparse.ArgumentParser(add_help=False) parser['inventory_common'].add_argument( '-I', '--inventory', help=('Use specified custom inventory directory. ' 'Inventory directory is set up by the following rules: ' 'if cdist configuration resolves this value then specified ' 'directory is used, ' 'if HOME env var is set then ~/.cdist/inventory is ' 'used, otherwise distribution inventory directory is used.'), dest="inventory_dir", required=False) parser['common'] = argparse.ArgumentParser(add_help=False) parser['common'].add_argument( '-g', '--config-file', help=('Use specified custom configuration file.'), dest="config_file", required=False) # Config parser['config_main'] = argparse.ArgumentParser(add_help=False) parser['config_main'].add_argument( '-C', '--cache-path-pattern', help=('Specify custom cache path pattern. If ' 'it is not set then default hostdir is used.'), dest='cache_path_pattern', default=None) parser['config_main'].add_argument( '-c', '--conf-dir', help=('Add configuration directory (can be repeated, ' 'last one wins).'), action='append') parser['config_main'].add_argument( '-i', '--initial-manifest', help='Path to a cdist manifest or \'-\' to read from stdin.', dest='manifest', required=False) parser['config_main'].add_argument( '-j', '--jobs', nargs='?', type=functools.partial(check_lower_bounded_int, lower_bound=1, name="positive int"), help=('Operate in parallel in specified maximum number of jobs. ' 'Global explorers, object prepare and object run are ' 'supported. Without argument CPU count is used by default. ' 'Currently in beta.'), action='store', dest='jobs', const=multiprocessing.cpu_count()) parser['config_main'].add_argument( '-n', '--dry-run', help='Do not execute code.', action='store_true') parser['config_main'].add_argument( '-o', '--out-dir', help='Directory to save cdist output in.', dest="out_path") parser['config_main'].add_argument( '-R', '--use-archiving', nargs='?', choices=('tar', 'tgz', 'tbz2', 'txz',), help=('Operate by using archiving with compression where ' 'appropriate. Supported values are: tar - tar archive, ' 'tgz - gzip tar archive (the default), ' 'tbz2 - bzip2 tar archive and txz - lzma tar archive. ' 'Currently in beta.'), action='store', dest='use_archiving', const='tgz') # 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_main'].add_argument( '-r', '--remote-out-dir', help='Directory to save cdist output in on the target host.', dest="remote_out_path") parser['config_main'].add_argument( '--remote-copy', help='Command to use for remote copy (should behave like scp).', action='store', dest='remote_copy', default=None) parser['config_main'].add_argument( '--remote-exec', help=('Command to use for remote execution ' '(should behave like ssh).'), action='store', dest='remote_exec', default=None) # Config parser['config_args'] = argparse.ArgumentParser(add_help=False) parser['config_args'].add_argument( '-4', '--force-ipv4', help=('Force to use IPv4 addresses only. No influence for custom' ' remote commands.'), action='store_const', dest='force_ipv', const=4) parser['config_args'].add_argument( '-6', '--force-ipv6', help=('Force to use IPv6 addresses only. No influence for custom' ' remote commands.'), action='store_const', dest='force_ipv', const=6) parser['config_args'].add_argument( '-A', '--all-tagged', help=('Use all hosts present in tags db. Currently in beta.'), action="store_true", dest="all_tagged_hosts", default=False) parser['config_args'].add_argument( '-a', '--all', help=('List hosts that have all specified tags, ' 'if -t/--tag is specified.'), action="store_true", dest="has_all_tags", default=False) parser['config_args'].add_argument( 'host', nargs='*', help='Host(s) to operate on.') parser['config_args'].add_argument( '-f', '--file', help=('Read specified file for a list of additional hosts to ' 'operate on or if \'-\' is given, read stdin (one host per ' 'line). If no host or host file is specified then, by ' 'default, read hosts from stdin.'), dest='hostfile', required=False) parser['config_args'].add_argument( '-p', '--parallel', nargs='?', metavar='HOST_MAX', type=functools.partial(check_lower_bounded_int, lower_bound=1, name="positive int"), help=('Operate on multiple hosts in parallel for specified maximum ' 'hosts at a time. Without argument CPU count is used by ' 'default.'), action='store', dest='parallel', const=multiprocessing.cpu_count()) parser['config_args'].add_argument( '-S', '--disable-saving-output-streams', help='Disable saving output streams.', action='store_false', dest='save_output_streams', default=True) parser['config_args'].add_argument( '-s', '--sequential', help='Operate on multiple hosts sequentially (default).', action='store_const', dest='parallel', const=0) parser['config_args'].add_argument( '-t', '--tag', help=('Host is specified by tag, not hostname/address; ' 'list all hosts that contain any of specified tags. ' 'Currently in beta.'), dest='tag', required=False, action="store_true", default=False) parser['config'] = parser['sub'].add_parser( 'config', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['config_main'], parser['inventory_common'], parser['config_args']]) 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) # Inventory parser['inventory'] = parser['sub'].add_parser( 'inventory', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['invsub'] = parser['inventory'].add_subparsers( title="Inventory commands", dest="subcommand") parser['add-host'] = parser['invsub'].add_parser( 'add-host', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['add-host'].add_argument( 'host', nargs='*', help='Host(s) to add.') parser['add-host'].add_argument( '-f', '--file', help=('Read additional hosts to add from specified file ' 'or from stdin if \'-\' (each host on separate line). ' 'If no host or host file is specified then, by default, ' 'read from stdin.'), dest='hostfile', required=False) parser['add-tag'] = parser['invsub'].add_parser( 'add-tag', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['add-tag'].add_argument( 'host', nargs='*', help='List of host(s) for which tags are added.') parser['add-tag'].add_argument( '-f', '--file', help=('Read additional hosts to add tags from specified file ' 'or from stdin if \'-\' (each host on separate line). ' 'If no host or host file is specified then, by default, ' 'read from stdin. If no tags/tagfile nor hosts/hostfile' ' are specified then tags are read from stdin and are' ' added to all hosts.'), dest='hostfile', required=False) parser['add-tag'].add_argument( '-T', '--tag-file', help=('Read additional tags to add from specified file ' 'or from stdin if \'-\' (each tag on separate line). ' 'If no tag or tag file is specified then, by default, ' 'read from stdin. If no tags/tagfile nor hosts/hostfile' ' are specified then tags are read from stdin and are' ' added to all hosts.'), dest='tagfile', required=False) parser['add-tag'].add_argument( '-t', '--taglist', help=("Tag list to be added for specified host(s), comma separated" " values."), dest="taglist", required=False) parser['del-host'] = parser['invsub'].add_parser( 'del-host', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['del-host'].add_argument( 'host', nargs='*', help='Host(s) to delete.') parser['del-host'].add_argument( '-a', '--all', help=('Delete all hosts.'), dest='all', required=False, action="store_true", default=False) parser['del-host'].add_argument( '-f', '--file', help=('Read additional hosts to delete from specified file ' 'or from stdin if \'-\' (each host on separate line). ' 'If no host or host file is specified then, by default, ' 'read from stdin.'), dest='hostfile', required=False) parser['del-tag'] = parser['invsub'].add_parser( 'del-tag', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['del-tag'].add_argument( 'host', nargs='*', help='List of host(s) for which tags are deleted.') parser['del-tag'].add_argument( '-a', '--all', help=('Delete all tags for specified host(s).'), dest='all', required=False, action="store_true", default=False) parser['del-tag'].add_argument( '-f', '--file', help=('Read additional hosts to delete tags for from specified ' 'file or from stdin if \'-\' (each host on separate line). ' 'If no host or host file is specified then, by default, ' 'read from stdin. If no tags/tagfile nor hosts/hostfile' ' are specified then tags are read from stdin and are' ' deleted from all hosts.'), dest='hostfile', required=False) parser['del-tag'].add_argument( '-T', '--tag-file', help=('Read additional tags from specified file ' 'or from stdin if \'-\' (each tag on separate line). ' 'If no tag or tag file is specified then, by default, ' 'read from stdin. If no tags/tagfile nor' ' hosts/hostfile are specified then tags are read from' ' stdin and are added to all hosts.'), dest='tagfile', required=False) parser['del-tag'].add_argument( '-t', '--taglist', help=("Tag list to be deleted for specified host(s), " "comma separated values."), dest="taglist", required=False) parser['list'] = parser['invsub'].add_parser( 'list', parents=[parser['loglevel'], parser['beta'], parser['common'], parser['inventory_common']]) parser['list'].add_argument( 'host', nargs='*', help='Host(s) to list.') parser['list'].add_argument( '-a', '--all', help=('List hosts that have all specified tags, ' 'if -t/--tag is specified.'), action="store_true", dest="has_all_tags", default=False) parser['list'].add_argument( '-f', '--file', help=('Read additional hosts to list from specified file ' 'or from stdin if \'-\' (each host on separate line). ' 'If no host or host file is specified then, by default, ' 'list all.'), dest='hostfile', required=False) parser['list'].add_argument( '-H', '--host-only', help=('Suppress tags listing.'), action="store_true", dest="list_only_host", default=False) parser['list'].add_argument( '-t', '--tag', help=('Host is specified by tag, not hostname/address; ' 'list all hosts that contain any of specified tags.'), action="store_true", default=False) parser['inventory'].set_defaults( func=cdist.inventory.Inventory.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 = EPILOG return parser def handle_loglevel(args): if args.quiet: args.verbose = _verbosity_level_off logging.root.setLevel(_verbosity_level[args.verbose]) def parse_and_configure(argv, singleton=True): parser = get_parsers() parser_args = parser['main'].parse_args(argv) try: cfg = cdist.configuration.Configuration(parser_args, singleton=singleton) args = cfg.get_args() except ValueError as e: raise cdist.Error(str(e)) # Loglevels are handled globally in here handle_loglevel(args) log = logging.getLogger("cdist") log.verbose("version %s" % cdist.VERSION) log.trace('command line args: {}'.format(cfg.command_line_args)) log.trace('configuration: {}'.format(cfg.get_config())) log.trace('configured args: {}'.format(args)) check_beta(vars(args)) return parser, cfg