20a7cee3e3
We don't need this in a Python 3-only world. We can't remove mock yet since there's an issue with the stdlib variant in python3.6, but that is called out. Change-Id: I9657b1fd4409be90d645175a6e177d7e1d2ebac2 Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
936 lines
30 KiB
Python
936 lines
30 KiB
Python
# Copyright 2013 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Type conversion and validation classes for configuration options.
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Use these classes as values for the `type` argument to
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:class:`oslo_config.cfg.Opt` and its subclasses.
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.. versionadded:: 1.3
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"""
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import collections
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import operator
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import re
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import warnings
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import abc
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from debtcollector import removals
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import netaddr
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import rfc3986
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class ConfigType(object, metaclass=abc.ABCMeta):
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def __init__(self, type_name='unknown type'):
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self.type_name = type_name
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NONE_DEFAULT = '<None>'
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def format_defaults(self, default, sample_default=None):
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"""Return a list of formatted default values.
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"""
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if sample_default is not None:
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if isinstance(sample_default, str):
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default_str = sample_default
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else:
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default_str = self._formatter(sample_default)
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elif default is None:
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default_str = self.NONE_DEFAULT
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else:
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default_str = self._formatter(default)
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return [default_str]
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def quote_trailing_and_leading_space(self, str_val):
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if not isinstance(str_val, str):
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warnings.warn('converting \'%s\' to a string' % str_val)
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str_val = str(str_val)
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if str_val.strip() != str_val:
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return '"%s"' % str_val
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return str_val
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@abc.abstractmethod
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def _formatter(self, value):
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pass
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class String(ConfigType):
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"""String type.
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String values do not get transformed and are returned as str objects.
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:param choices: Optional sequence of either valid values or tuples of valid
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values with descriptions. Mutually exclusive with 'regex'.
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:param quotes: If True and string is enclosed with single or double
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quotes, will strip those quotes. Will signal error if
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string have quote at the beginning and no quote at
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the end. Turned off by default. Useful if used with
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container types like List.
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:param regex: Optional regular expression (string or compiled
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regex) that the value must match on an unanchored
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search. Mutually exclusive with 'choices'.
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:param ignore_case: If True case differences (uppercase vs. lowercase)
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between 'choices' or 'regex' will be ignored;
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defaults to False.
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:param max_length: Optional integer. If a positive value is specified,
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a maximum length of an option value must be less than
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or equal to this parameter. Otherwise no length check
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will be done.
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:param type_name: Type name to be used in the sample config file.
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.. versionchanged:: 2.1
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Added *regex* parameter.
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.. versionchanged:: 2.5
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Added *ignore_case* parameter.
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.. versionchanged:: 2.7
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Added *max_length* parameter.
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Added *type_name* parameter.
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.. versionchanged:: 5.2
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The *choices* parameter will now accept a sequence of tuples, where each
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tuple is of form (*choice*, *description*)
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"""
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def __init__(self, choices=None, quotes=False, regex=None,
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ignore_case=False, max_length=None,
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type_name='string value'):
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super(String, self).__init__(type_name=type_name)
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if choices and regex:
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raise ValueError("'choices' and 'regex' cannot both be specified")
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self.ignore_case = ignore_case
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self.quotes = quotes
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self.max_length = max_length or 0
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if choices is not None:
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if not all(isinstance(choice, tuple) for choice in choices):
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choices = [(choice, None) for choice in choices]
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self.choices = collections.OrderedDict(choices)
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else:
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self.choices = None
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self.lower_case_choices = None
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if self.choices is not None and self.ignore_case:
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self.lower_case_choices = [c.lower() for c in self.choices]
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self.regex = regex
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if self.regex is not None:
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re_flags = re.IGNORECASE if self.ignore_case else 0
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# Check if regex is a string or an already compiled regex
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if isinstance(regex, str):
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self.regex = re.compile(regex, re_flags)
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else:
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self.regex = re.compile(regex.pattern, re_flags | regex.flags)
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def __call__(self, value):
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value = str(value)
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if self.quotes and value:
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if value[0] in "\"'":
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if len(value) == 1 or value[-1] != value[0]:
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raise ValueError('Non-closed quote: %s' % value)
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value = value[1:-1]
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if self.max_length > 0 and len(value) > self.max_length:
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raise ValueError("Value '%s' exceeds maximum length %d" %
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(value, self.max_length))
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if self.regex and not self.regex.search(value):
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raise ValueError("Value %r doesn't match regex %r" %
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(value, self.regex.pattern))
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if self.choices is None:
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return value
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# Check for case insensitive
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processed_value, choices = ((value.lower(), self.lower_case_choices)
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if self.ignore_case else
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(value, self.choices.keys()))
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if processed_value in choices:
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return value
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raise ValueError(
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'Valid values are [%s], but found %s' % (
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', '.join([str(v) for v in self.choices]),
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repr(value)))
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def __repr__(self):
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details = []
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if self.choices is not None:
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details.append("choices={!r}".format(list(self.choices.keys())))
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if self.regex:
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details.append("regex=%r" % self.regex.pattern)
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if details:
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return "String(%s)" % ",".join(details)
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return 'String'
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def __eq__(self, other):
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return (
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(self.__class__ == other.__class__) and
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(self.quotes == other.quotes) and
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(self.regex == other.regex) and
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(set([x for x in self.choices or []]) ==
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set([x for x in other.choices or []]) if
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self.choices and other.choices else
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self.choices == other.choices)
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)
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def _formatter(self, value):
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return self.quote_trailing_and_leading_space(value)
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class MultiString(String):
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"""Multi-valued string."""
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def __init__(self, type_name='multi valued'):
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super(MultiString, self).__init__(type_name=type_name)
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NONE_DEFAULT = ['']
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def format_defaults(self, default, sample_default=None):
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"""Return a list of formatted default values.
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"""
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if sample_default is not None:
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default_list = self._formatter(sample_default)
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elif not default:
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default_list = self.NONE_DEFAULT
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else:
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default_list = self._formatter(default)
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return default_list
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def _formatter(self, value):
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return [self.quote_trailing_and_leading_space(v) for v in value]
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class Boolean(ConfigType):
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"""Boolean type.
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Values are case insensitive and can be set using
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1/0, yes/no, true/false or on/off.
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:param type_name: Type name to be used in the sample config file.
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.. versionchanged:: 2.7
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Added *type_name* parameter.
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"""
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TRUE_VALUES = ['true', '1', 'on', 'yes']
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FALSE_VALUES = ['false', '0', 'off', 'no']
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def __init__(self, type_name='boolean value'):
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super(Boolean, self).__init__(type_name=type_name)
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def __call__(self, value):
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if isinstance(value, bool):
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return value
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s = value.lower()
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if s in self.TRUE_VALUES:
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return True
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elif s in self.FALSE_VALUES:
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return False
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else:
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raise ValueError('Unexpected boolean value %r' % value)
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def __repr__(self):
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return 'Boolean'
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def __eq__(self, other):
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return self.__class__ == other.__class__
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def _formatter(self, value):
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return str(value).lower()
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class Number(ConfigType):
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"""Number class, base for Integer and Float.
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:param num_type: the type of number used for casting (i.e int, float)
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:param type_name: Type name to be used in the sample config file.
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:param min: Optional check that value is greater than or equal to min.
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:param max: Optional check that value is less than or equal to max.
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:param choices: Optional sequence of either valid values or tuples of valid
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values with descriptions.
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.. versionadded:: 3.14
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.. versionchanged:: 5.2
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The *choices* parameter will now accept a sequence of tuples, where each
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tuple is of form (*choice*, *description*)
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"""
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def __init__(self, num_type, type_name,
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min=None, max=None, choices=None):
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super(Number, self).__init__(type_name=type_name)
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if min is not None and max is not None and max < min:
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raise ValueError('Max value is less than min value')
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if choices is not None:
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if not all(isinstance(choice, tuple) for choice in choices):
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choices = [(choice, None) for choice in choices]
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self.choices = collections.OrderedDict(choices)
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else:
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self.choices = None
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invalid_choices = [c for c in self.choices or []
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if (min is not None and min > c)
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or (max is not None and max < c)]
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if invalid_choices:
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raise ValueError("Choices %s are out of bounds [%s..%s]"
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% (invalid_choices, min, max))
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self.min = min
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self.max = max
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self.num_type = num_type
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def __call__(self, value):
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if not isinstance(value, self.num_type):
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s = str(value).strip()
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if s == '':
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return None
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value = self.num_type(value)
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if self.choices is None:
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if self.min is not None and value < self.min:
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raise ValueError('Should be greater than or equal to %g' %
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self.min)
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if self.max is not None and value > self.max:
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raise ValueError('Should be less than or equal to %g' %
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self.max)
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else:
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if value not in self.choices:
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raise ValueError('Valid values are %r, but found %g' % (
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self.choices, value))
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return value
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def __repr__(self):
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props = []
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if self.choices is not None:
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props.append("choices={!r}".format(list(self.choices.keys())))
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else:
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if self.min is not None:
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props.append('min=%g' % self.min)
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if self.max is not None:
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props.append('max=%g' % self.max)
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if props:
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return self.__class__.__name__ + '(%s)' % ', '.join(props)
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return self.__class__.__name__
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def __eq__(self, other):
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return (
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(self.__class__ == other.__class__) and
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(self.min == other.min) and
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(self.max == other.max) and
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(set([x for x in self.choices or []]) ==
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set([x for x in other.choices or []]) if
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self.choices and other.choices else
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self.choices == other.choices)
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)
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def _formatter(self, value):
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return str(value)
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class Integer(Number):
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"""Integer type.
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Converts value to an integer optionally doing range checking.
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If value is whitespace or empty string will return None.
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:param min: Optional check that value is greater than or equal to min.
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:param max: Optional check that value is less than or equal to max.
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:param type_name: Type name to be used in the sample config file.
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:param choices: Optional sequence of either valid values or tuples of valid
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values with descriptions.
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.. versionchanged:: 2.4
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The class now honors zero for *min* and *max* parameters.
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.. versionchanged:: 2.7
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Added *type_name* parameter.
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.. versionchanged:: 3.2
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Added *choices* parameter.
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.. versionchanged:: 3.16
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*choices* is no longer mutually exclusive with *min*/*max*. If those are
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supplied, all choices are verified to be within the range.
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.. versionchanged:: 5.2
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The *choices* parameter will now accept a sequence of tuples, where each
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tuple is of form (*choice*, *description*)
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"""
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def __init__(self, min=None, max=None, type_name='integer value',
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choices=None):
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super(Integer, self).__init__(int, type_name, min=min, max=max,
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choices=choices)
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class Float(Number):
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"""Float type.
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:param min: Optional check that value is greater than or equal to min.
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:param max: Optional check that value is less than or equal to max.
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:param type_name: Type name to be used in the sample config file.
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.. versionchanged:: 2.7
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Added *type_name* parameter.
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.. versionchanged:: 3.14
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Added *min* and *max* parameters. If *choices* are also supplied, they
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must be within the range.
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"""
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def __init__(self, min=None, max=None, type_name='floating point value'):
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super(Float, self).__init__(float, type_name, min=min, max=max)
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class Port(Integer):
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"""Port type
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Represents a L4 Port.
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:param min: Optional check that value is greater than or equal to min.
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:param max: Optional check that value is less than or equal to max.
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:param type_name: Type name to be used in the sample config file.
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:param choices: Optional sequence of either valid values or tuples of valid
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values with descriptions.
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.. versionadded:: 3.16
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.. versionchanged:: 5.2
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The *choices* parameter will now accept a sequence of tuples, where each
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tuple is of form (*choice*, *description*)
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"""
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PORT_MIN = 0
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PORT_MAX = 65535
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def __init__(self, min=None, max=None, type_name='port', choices=None):
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min = self.PORT_MIN if min is None else min
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max = self.PORT_MAX if max is None else max
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if min < self.PORT_MIN:
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raise ValueError('Min value cannot be less than %(min)d' %
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{'min': self.PORT_MIN})
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if max > self.PORT_MAX:
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raise ValueError('Max value cannot be more than %(max)d' %
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{'max': self.PORT_MAX})
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super(Port, self).__init__(min=min, max=max, type_name=type_name,
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choices=choices)
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class List(ConfigType):
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"""List type.
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Represent values of other (item) type, separated by commas.
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The resulting value is a list containing those values.
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List doesn't know if item type can also contain commas. To workaround this
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it tries the following: if the next part fails item validation, it appends
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comma and next item until validation succeeds or there is no parts left.
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In the later case it will signal validation error.
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:param item_type: Type of list items. Should be an instance of
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``ConfigType``.
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:param bounds: if True, value should be inside "[" and "]" pair
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:param type_name: Type name to be used in the sample config file.
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.. versionchanged:: 2.7
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Added *type_name* parameter.
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"""
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def __init__(self, item_type=None, bounds=False, type_name='list value'):
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super(List, self).__init__(type_name=type_name)
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if item_type is None:
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item_type = String()
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if not callable(item_type):
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raise TypeError('item_type must be callable')
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self.item_type = item_type
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self.bounds = bounds
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def __call__(self, value):
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if isinstance(value, (list, tuple)):
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return list(map(self.item_type, value))
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s = value.strip().rstrip(',')
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if self.bounds:
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if not s.startswith('['):
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raise ValueError('Value should start with "["')
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if not s.endswith(']'):
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raise ValueError('Value should end with "]"')
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s = s[1:-1]
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if s:
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values = s.split(',')
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else:
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values = []
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if not values:
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return []
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result = []
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while values:
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value = values.pop(0)
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while True:
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first_error = None
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try:
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validated_value = self.item_type(value.strip())
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break
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except ValueError as e:
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if not first_error:
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first_error = e
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if len(values) == 0:
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raise first_error
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value += ',' + values.pop(0)
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result.append(validated_value)
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return result
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def __repr__(self):
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return 'List of %s' % repr(self.item_type)
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def __eq__(self, other):
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return (
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(self.__class__ == other.__class__) and
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(self.item_type == other.item_type)
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)
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def _formatter(self, value):
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fmtstr = '[{}]' if self.bounds else '{}'
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if isinstance(value, str):
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return fmtstr.format(value)
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if isinstance(value, list):
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value = [
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self.item_type._formatter(v)
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for v in value
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]
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return fmtstr.format(','.join(value))
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return fmtstr.format(self.item_type._formatter(value))
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class Range(ConfigType):
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|
|
|
"""Range type.
|
|
|
|
Represents a range of integers. A range is identified by an integer both
|
|
sides of a '-' character. Negatives are allowed. A single number is also a
|
|
valid range.
|
|
|
|
:param min: Optional check that lower bound is greater than or equal to
|
|
min.
|
|
:param max: Optional check that upper bound is less than or equal to max.
|
|
:param inclusive: True if the right bound is to be included in the range.
|
|
:param type_name: Type name to be used in the sample config file.
|
|
|
|
.. versionadded:: 3.18
|
|
"""
|
|
|
|
def __init__(self, min=None, max=None, inclusive=True,
|
|
type_name='range value'):
|
|
super(Range, self).__init__(type_name)
|
|
self.min = min
|
|
self.max = max
|
|
self.inclusive = inclusive
|
|
|
|
def __call__(self, value):
|
|
value = str(value)
|
|
num = "0|-?[1-9][0-9]*"
|
|
m = re.match("^(%s)(?:-(%s))?$" % (num, num), value)
|
|
if not m:
|
|
raise ValueError('Invalid Range: %s' % value)
|
|
left = int(m.group(1))
|
|
right = int(left if m.group(2) is None else m.group(2))
|
|
|
|
if left < right:
|
|
left = Integer(min=self.min)(left)
|
|
right = Integer(max=self.max)(right)
|
|
step = 1
|
|
else:
|
|
left = Integer(max=self.max)(left)
|
|
right = Integer(min=self.min)(right)
|
|
step = -1
|
|
if self.inclusive:
|
|
right += step
|
|
return range(left, right, step)
|
|
|
|
def __eq__(self, other):
|
|
return (
|
|
(self.__class__ == other.__class__) and
|
|
(self.min == other.min) and
|
|
(self.max == other.max)
|
|
)
|
|
|
|
def _formatter(self, value):
|
|
return value
|
|
|
|
|
|
class Dict(ConfigType):
|
|
|
|
"""Dictionary type.
|
|
|
|
Dictionary type values are key:value pairs separated by commas.
|
|
The resulting value is a dictionary of these key/value pairs.
|
|
Type of dictionary key is always string, but dictionary value
|
|
type can be customized.
|
|
|
|
:param value_type: type of values in dictionary
|
|
:param bounds: if True, value should be inside "{" and "}" pair
|
|
:param type_name: Type name to be used in the sample config file.
|
|
|
|
.. versionchanged:: 2.7
|
|
|
|
Added *type_name* parameter.
|
|
"""
|
|
|
|
def __init__(self, value_type=None, bounds=False, type_name='dict value'):
|
|
super(Dict, self).__init__(type_name=type_name)
|
|
|
|
if value_type is None:
|
|
value_type = String()
|
|
|
|
if not callable(value_type):
|
|
raise TypeError('value_type must be callable')
|
|
self.value_type = value_type
|
|
self.bounds = bounds
|
|
|
|
def __call__(self, value):
|
|
if isinstance(value, dict):
|
|
return value
|
|
|
|
result = {}
|
|
s = value.strip()
|
|
|
|
if self.bounds:
|
|
if not s.startswith('{'):
|
|
raise ValueError('Value should start with "{"')
|
|
if not s.endswith('}'):
|
|
raise ValueError('Value should end with "}"')
|
|
s = s[1:-1]
|
|
|
|
if s == '':
|
|
return result
|
|
|
|
pairs = s.split(',')
|
|
while pairs:
|
|
pair = pairs.pop(0)
|
|
|
|
while True:
|
|
first_error = None
|
|
try:
|
|
key_value = pair.split(':', 1)
|
|
|
|
if len(key_value) < 2:
|
|
raise ValueError('Value should be NAME:VALUE pairs '
|
|
'separated by ","')
|
|
|
|
key, value = key_value
|
|
key = key.strip()
|
|
value = value.strip()
|
|
|
|
value = self.value_type(value)
|
|
break
|
|
except ValueError as e:
|
|
if not first_error:
|
|
first_error = e
|
|
if not pairs:
|
|
raise first_error
|
|
|
|
pair += ',' + pairs.pop(0)
|
|
|
|
if key == '':
|
|
raise ValueError('Key name should not be empty')
|
|
|
|
if key in result:
|
|
raise ValueError('Duplicate key %s' % key)
|
|
|
|
result[key] = value
|
|
|
|
return result
|
|
|
|
def __repr__(self):
|
|
return 'Dict of %s' % repr(self.value_type)
|
|
|
|
def __eq__(self, other):
|
|
return (
|
|
(self.__class__ == other.__class__) and
|
|
(self.value_type == other.value_type)
|
|
)
|
|
|
|
def _formatter(self, value):
|
|
sorted_items = sorted(value.items(),
|
|
key=operator.itemgetter(0))
|
|
return ','.join(['%s:%s' % i for i in sorted_items])
|
|
|
|
|
|
class IPAddress(ConfigType):
|
|
|
|
"""IP address type
|
|
|
|
Represents either ipv4 or ipv6. Without specifying version parameter both
|
|
versions are checked
|
|
|
|
:param version: defines which version should be explicitly checked (4 or 6)
|
|
:param type_name: Type name to be used in the sample config file.
|
|
|
|
.. versionchanged:: 2.7
|
|
|
|
Added *type_name* parameter.
|
|
"""
|
|
|
|
def __init__(self, version=None, type_name='IP address value'):
|
|
super(IPAddress, self).__init__(type_name=type_name)
|
|
version_checkers = {
|
|
None: self._check_both_versions,
|
|
4: self._check_ipv4,
|
|
6: self._check_ipv6
|
|
}
|
|
|
|
self.version_checker = version_checkers.get(version)
|
|
if self.version_checker is None:
|
|
raise TypeError("%s is not a valid IP version." % version)
|
|
|
|
def __call__(self, value):
|
|
value = str(value)
|
|
if not value:
|
|
raise ValueError("IP address cannot be an empty string")
|
|
self.version_checker(value)
|
|
return value
|
|
|
|
def __repr__(self):
|
|
return "IPAddress"
|
|
|
|
def __eq__(self, other):
|
|
return self.__class__ == other.__class__
|
|
|
|
def _check_ipv4(self, address):
|
|
if not netaddr.valid_ipv4(address, netaddr.core.INET_PTON):
|
|
raise ValueError("%s is not an IPv4 address" % address)
|
|
|
|
def _check_ipv6(self, address):
|
|
if not netaddr.valid_ipv6(address, netaddr.core.INET_PTON):
|
|
raise ValueError("%s is not an IPv6 address" % address)
|
|
|
|
def _check_both_versions(self, address):
|
|
if not (netaddr.valid_ipv4(address, netaddr.core.INET_PTON) or
|
|
netaddr.valid_ipv6(address, netaddr.core.INET_PTON)):
|
|
raise ValueError("%s is not IPv4 or IPv6 address" % address)
|
|
|
|
def _formatter(self, value):
|
|
return value
|
|
|
|
|
|
class Hostname(ConfigType):
|
|
"""Host domain name type.
|
|
|
|
A hostname refers to a valid DNS or hostname. It must not be longer than
|
|
253 characters, have a segment greater than 63 characters, nor start or
|
|
end with a hyphen.
|
|
|
|
:param type_name: Type name to be used in the sample config file.
|
|
|
|
"""
|
|
|
|
def __init__(self, type_name='hostname value'):
|
|
super(Hostname, self).__init__(type_name=type_name)
|
|
|
|
def __call__(self, value):
|
|
"""Check hostname is valid.
|
|
|
|
Ensures that each segment
|
|
- Contains at least one character and a maximum of 63 characters
|
|
- Consists only of allowed characters: letters (A-Z and a-z),
|
|
digits (0-9), and hyphen (-)
|
|
- Ensures that the final segment (representing the top level domain
|
|
name) contains at least one non-numeric character
|
|
- Does not begin or end with a hyphen
|
|
- maximum total length of 253 characters
|
|
|
|
For more details , please see: http://tools.ietf.org/html/rfc1035,
|
|
https://www.ietf.org/rfc/rfc1912, and
|
|
https://tools.ietf.org/html/rfc1123
|
|
"""
|
|
|
|
if len(value) == 0:
|
|
raise ValueError("Cannot have an empty hostname")
|
|
if len(value) > 253:
|
|
raise ValueError("hostname is greater than 253 characters: %s"
|
|
% value)
|
|
if value.endswith("."):
|
|
value = value[:-1]
|
|
allowed = re.compile("(?!-)[A-Z0-9-]{1,63}(?<!-)$", re.IGNORECASE)
|
|
if not re.search('[a-zA-Z-]', value.split(".")[-1]):
|
|
raise ValueError('%s contains no non-numeric characters in the '
|
|
'top-level domain part of the host name and is '
|
|
'invalid' % value)
|
|
if any((not allowed.match(x)) for x in value.split(".")):
|
|
raise ValueError("%s is an invalid hostname" % value)
|
|
return value
|
|
|
|
def __repr__(self):
|
|
return 'Hostname'
|
|
|
|
def __eq__(self, other):
|
|
return self.__class__ == other.__class__
|
|
|
|
def _formatter(self, value):
|
|
return value
|
|
|
|
|
|
class HostAddress(ConfigType):
|
|
"""Host Address type.
|
|
|
|
Represents both valid IP addresses and valid host domain names
|
|
including fully qualified domain names.
|
|
Performs strict checks for both IP addresses and valid hostnames,
|
|
matching the opt values to the respective types as per RFC1912.
|
|
|
|
:param version: defines which version should be explicitly
|
|
checked (4 or 6) in case of an IP address
|
|
:param type_name: Type name to be used in the sample config file.
|
|
"""
|
|
|
|
def __init__(self, version=None, type_name='host address value'):
|
|
"""Check for valid version in case an IP address is provided
|
|
|
|
"""
|
|
|
|
super(HostAddress, self).__init__(type_name=type_name)
|
|
self.ip_address = IPAddress(version, type_name)
|
|
self.hostname = Hostname('localhost')
|
|
|
|
def __call__(self, value):
|
|
"""Checks if is a valid IP/hostname.
|
|
|
|
If not a valid IP, makes sure it is not a mistyped IP before
|
|
performing checks for it as a hostname.
|
|
|
|
"""
|
|
|
|
try:
|
|
value = self.ip_address(value)
|
|
except ValueError:
|
|
try:
|
|
value = self.hostname(value)
|
|
except ValueError:
|
|
raise ValueError("%s is not a valid host address" % (value,))
|
|
return value
|
|
|
|
def __repr__(self):
|
|
return 'HostAddress'
|
|
|
|
def __eq__(self, other):
|
|
return self.__class__ == other.__class__
|
|
|
|
def _formatter(self, value):
|
|
return value
|
|
|
|
|
|
class URI(ConfigType):
|
|
|
|
"""URI type
|
|
|
|
Represents URI. Value will be validated as RFC 3986.
|
|
|
|
:param max_length: Optional integer. If a positive value is specified,
|
|
a maximum length of an option value must be less than
|
|
or equal to this parameter. Otherwise no length check
|
|
will be done.
|
|
:param schemes: List of valid schemes.
|
|
:param type_name: Type name to be used in the sample config file.
|
|
|
|
.. versionchanged:: 3.14
|
|
Added *max_length* parameter.
|
|
.. versionchanged:: 3.18
|
|
Added *schemes* parameter.
|
|
"""
|
|
|
|
def __init__(self, max_length=None, schemes=None, type_name='uri value'):
|
|
super(URI, self).__init__(type_name=type_name)
|
|
self.max_length = max_length
|
|
self.schemes = schemes
|
|
|
|
def __call__(self, value):
|
|
uri = rfc3986.uri_reference(value)
|
|
validator = rfc3986.validators.Validator().require_presence_of(
|
|
'scheme', 'host',
|
|
).check_validity_of(
|
|
'scheme', 'host', 'path',
|
|
)
|
|
if self.schemes:
|
|
validator = validator.allow_schemes(*self.schemes)
|
|
try:
|
|
validator.validate(uri)
|
|
except rfc3986.exceptions.RFC3986Exception as exc:
|
|
raise ValueError(exc)
|
|
|
|
if self.max_length is not None and len(value) > self.max_length:
|
|
raise ValueError("Value '%s' exceeds maximum length %d" %
|
|
(value, self.max_length))
|
|
|
|
# NOTE(dhellmann): self.value is deprecated, and we don't want
|
|
# to trigger a deprecation warning ourselves so we modify
|
|
# self._value directly.
|
|
self._value = value
|
|
return value
|
|
|
|
@removals.removed_property
|
|
def value(self):
|
|
return self._value
|
|
|
|
@value.setter
|
|
def value(self, newval):
|
|
self._value = newval
|
|
|
|
@value.deleter
|
|
def value(self):
|
|
del self._value
|
|
|
|
def __repr__(self):
|
|
return 'URI'
|
|
|
|
def __eq__(self, other):
|
|
to_compare = ['__class__', 'max_length', 'schemes']
|
|
unset = object()
|
|
my_values = tuple(
|
|
getattr(self, name, unset) for name in to_compare
|
|
)
|
|
other_values = tuple(
|
|
getattr(other, name, unset) for name in to_compare
|
|
)
|
|
return my_values == other_values
|
|
|
|
def _formatter(self, value):
|
|
return value
|