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Code Editor : options.py
# This file is part of the sos project: https://github.com/sosreport/sos # # This copyrighted material is made available to anyone wishing to use, # modify, copy, or redistribute it subject to the terms and conditions of # version 2 of the GNU General Public License. # # See the LICENSE file in the source distribution for further information. from argparse import Action from configparser import (ConfigParser, ParsingError, Error, DuplicateOptionError) def _is_seq(val): """Return true if val is an instance of a known sequence type. """ val_type = type(val) return val_type is list or val_type is tuple def str_to_bool(val): _val = val.lower() if _val in ['true', 'on', 'yes']: return True elif _val in ['false', 'off', 'no']: return False else: return None class SoSOptions(): def _merge_opt(self, opt, src, is_default): def _unset(val): return (val == "" or val is None) if hasattr(src, opt): newvalue = getattr(src, opt) oldvalue = getattr(self, opt) # overwrite value iff: # - we replace unset option by a real value # - new default is set, or # - non-sequential variable keeps its default value if (_unset(oldvalue) and not _unset(newvalue)) or \ is_default or \ ((opt not in self._nondefault) and (not _is_seq(newvalue))): # Overwrite atomic values setattr(self, opt, newvalue) if is_default: self._nondefault.discard(opt) else: self._nondefault.add(opt) elif _is_seq(newvalue): # Concatenate sequence types setattr(self, opt, newvalue + oldvalue) def _merge_opts(self, src, is_default): if not isinstance(src, dict): src = vars(src) for arg in self.arg_names: self._merge_opt(arg, src, is_default) def __str(self, quote=False, sep=" ", prefix="", suffix=""): """Format a SoSOptions object as a human or machine readable string. :param quote: quote option values :param sep: list separator string :param prefix: arbitrary prefix string :param suffix: arbitrary suffix string :param literal: print values as Python literals """ args = prefix arg_fmt = "=%s" for arg in self.arg_names: args += arg + arg_fmt + sep args.strip(sep) vals = [getattr(self, arg) for arg in self.arg_names] if not quote: # Convert Python source notation for sequences into plain strings vals = [",".join(v) if _is_seq(v) else v for v in vals] else: # Only quote strings if quote=False vals = [f"'{v}'" if isinstance(v, str) else v for v in vals] return (args % tuple(vals)).strip(sep) + suffix def __str__(self): return self.__str() def __repr__(self): return self.__str(quote=True, sep=", ", prefix="SoSOptions(", suffix=")") def __init__(self, arg_defaults={}, **kwargs): """Initialise a new ``SoSOptions`` object from keyword arguments. Initialises the new object with values taken from keyword arguments matching the names of ``SoSOptions`` attributes. A ``ValueError`` is raised is any of the supplied keyword arguments does not correspond to a known ``SoSOptions` attribute name. :param *kwargs: a list of ``SoSOptions`` keyword args. :returns: the new ``SoSOptions`` object. """ self.arg_defaults = arg_defaults self.arg_names = list(arg_defaults.keys()) self._nondefault = set() # first load the defaults, if supplied for arg in self.arg_defaults: setattr(self, arg, self.arg_defaults[arg]) # next, load any kwargs for arg in kwargs.keys(): self.arg_names.append(arg) setattr(self, arg, kwargs[arg]) @classmethod def from_args(cls, args, arg_defaults={}): """Initialise a new SoSOptions object from a ``Namespace`` obtained by parsing command line arguments. :param args: parsed command line arguments :returns: an initialised SoSOptions object :returntype: SoSOptions """ opts = SoSOptions(**vars(args), arg_defaults=arg_defaults) opts._merge_opts(args, True) return opts @classmethod def _opt_to_args(cls, opt, val): """Convert a named option and optional value to command line argument notation, correctly handling options that take no value or that have special representations (e.g. verify and verbose). """ no_value = ( "alloptions", "allow-system-changes", "all-logs", "batch", "build", "debug", "experimental", "list-plugins", "list-presets", "list-profiles", "no-report", "no-env-vars", "quiet", "verify" ) count = ("verbose",) if opt in no_value: return [f"--{opt}"] if opt in count: return [f"--{opt}" for d in range(0, int(val))] return [f"--{opt}={val}"] def _convert_to_type(self, key, val, conf): """Ensure that the value read from a config file is the proper type for consumption by the component, as defined by arg_defaults. Params: :param key: The key in arg_defaults we need to match the type of :param val: The value to be converted to a particular type :param conf: File values are being loaded from """ if isinstance(self.arg_defaults[key], type(val)): return val if isinstance(self.arg_defaults[key], list): return [v for v in val.split(',')] if isinstance(self.arg_defaults[key], bool): val = str_to_bool(val) if val is None: raise Exception( f"Value of '{key}' in {conf} must be True or False or " "analagous") else: return val if isinstance(self.arg_defaults[key], int): try: return int(val) except ValueError: raise Exception(f"Value of '{key}' in {conf} must be integer") return val def update_from_conf(self, config_file, component): """Read the provided config_file and update options from that. Positional arguments: :param config_file: Filepath to the config file :param component: Which component (section) to load """ def _update_from_section(section, config): if config.has_section(section): odict = dict(config.items(section)) # handle verbose explicitly if 'verbose' in odict.keys(): odict['verbosity'] = int(odict.pop('verbose')) # convert options names # unify some of them if multiple variants of the # cmdoption exist rename_opts = { 'name': 'label', 'plugin_option': 'plugopts', 'profile': 'profiles' } for key in list(odict): if '-' in key: odict[key.replace('-', '_')] = odict.pop(key) if key in rename_opts: odict[rename_opts[key]] = odict.pop(key) # set the values according to the config file for key, val in odict.items(): # most option values do not tolerate spaces, special # exception however for --keywords which we do want to # support phrases, and thus spaces, for if isinstance(val, str) and key != 'keywords': val = val.replace(' ', '') if key not in self.arg_defaults: # read an option that is not loaded by the current # SoSComponent print(f"Unknown option '{key}' in section '{section}'") continue val = self._convert_to_type(key, val, config_file) setattr(self, key, val) config = ConfigParser() try: try: with open(config_file) as f: config.read_file(f, config_file) except DuplicateOptionError as err: raise exit(f"Duplicate option '{err.option}' in section " f"'{err.section}' in file {config_file}") except (ParsingError, Error): raise exit(f'Failed to parse configuration file {config_file}') except (OSError, IOError) as e: print( f'WARNING: Unable to read configuration file {config_file} : ' f'{e.args[1]}' ) _update_from_section("global", config) _update_from_section(component, config) if config.has_section("plugin_options") and hasattr(self, 'plugopts'): # pylint: disable=no-member for key, val in config.items("plugin_options"): if not key.split('.')[0] in self.skip_plugins: self.plugopts.append(key + '=' + val) def merge(self, src, skip_default=True): """Merge another set of ``SoSOptions`` into this object. Merge two ``SoSOptions`` objects by setting unset or default values to their value in the ``src`` object. :param src: the ``SoSOptions`` object to copy from :param is_default: ``True`` if new default values are to be set. """ for arg in self.arg_names: if not hasattr(src, arg): continue if getattr(src, arg) is not None or not skip_default: self._merge_opt(arg, src, False) def dict(self, preset_filter=True): """Return this ``SoSOptions`` option values as a dictionary of argument name to value mappings. :returns: a name:value dictionary of option values. """ odict = {} for arg in self.arg_names: value = getattr(self, arg) # Do not attempt to store preset option values in presets if preset_filter: if arg in ('add_preset', 'del_preset', 'desc', 'note'): value = None odict[arg] = value return odict def to_args(self): """Return command arguments for this object. Return a list of the non-default options of this ``SoSOptions`` object in ``sosreport`` command line argument notation: ``["--all-logs", "-vvv"]`` """ def has_value(name, value): """ Test for non-null option values. """ null_values = ("False", "None", "[]", '""', "''", "0") if not value or value in null_values: return False if name == 'plugopts' and value: return True if name in self.arg_defaults: if str(value) == str(self.arg_defaults[name]): return False return True def filter_opt(name, value): """ Filter out preset and null-valued options. """ if name in ("add_preset", "del_preset", "desc", "note"): return False # Exception list for options that still need to be reported when 0 if name in ['log_size', 'plugin_timeout', 'cmd_timeout'] \ and value == 0: return True return has_value(name, value) def argify(name, value): """ Convert sos option notation to command line arguments. """ # Handle --verbosity specially if name.startswith("verbosity"): arg = "-" + int(value) * "v" return arg name = name.replace("_", "-") value = ",".join(value) if _is_seq(value) else value if value is not True: opt = f"{name} {value}" else: opt = name arg = "--" + opt if len(opt) > 1 else "-" + opt return arg opt_items = sorted(self.dict().items(), key=lambda x: x[0]) return [argify(n, v) for (n, v) in opt_items if filter_opt(n, v)] class SosListOption(Action): """Allow to specify comma delimited list of plugins""" def __call__(self, parser, namespace, values, option_string=None): items = [opt for opt in values.split(',')] if getattr(namespace, self.dest): items += getattr(namespace, self.dest) setattr(namespace, self.dest, items) class ClusterOption(): """Used to store/manipulate options for cluster profiles.""" def __init__(self, name, value, opt_type, cluster, description=None): self.name = name self.value = value self.opt_type = opt_type self.cluster = cluster self.description = description
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