update
This commit is contained in:
Iliyan Angelov
752
frontEnd/venv/lib/python3.12/site-packages/drf_yasg/openapi.py
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752
frontEnd/venv/lib/python3.12/site-packages/drf_yasg/openapi.py
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@@ -0,0 +1,752 @@
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import enum
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import logging
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import re
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import urllib.parse as urlparse
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from collections import OrderedDict, abc as collections_abc
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from django.urls import get_script_prefix
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from django.utils.functional import Promise
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from inflection import camelize
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from .utils import filter_none, force_real_str
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logger = logging.getLogger(__name__)
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TYPE_OBJECT = "object" #:
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TYPE_STRING = "string" #:
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TYPE_NUMBER = "number" #:
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TYPE_INTEGER = "integer" #:
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TYPE_BOOLEAN = "boolean" #:
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TYPE_ARRAY = "array" #:
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TYPE_FILE = "file" #:
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# officially supported by Swagger 2.0 spec
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FORMAT_DATE = "date" #:
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FORMAT_DATETIME = "date-time" #:
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FORMAT_PASSWORD = "password" #:
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FORMAT_BINARY = "binary" #:
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FORMAT_BASE64 = "bytes" #:
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FORMAT_FLOAT = "float" #:
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FORMAT_DOUBLE = "double" #:
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FORMAT_INT32 = "int32" #:
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FORMAT_INT64 = "int64" #:
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# defined in JSON-schema
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FORMAT_EMAIL = "email" #:
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FORMAT_IPV4 = "ipv4" #:
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FORMAT_IPV6 = "ipv6" #:
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FORMAT_URI = "uri" #:
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# pulled out of my ass
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FORMAT_UUID = "uuid" #:
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FORMAT_SLUG = "slug" #:
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FORMAT_DECIMAL = "decimal"
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IN_BODY = 'body' #:
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IN_PATH = 'path' #:
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IN_QUERY = 'query' #:
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IN_FORM = 'formData' #:
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IN_HEADER = 'header' #:
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SCHEMA_DEFINITIONS = 'definitions' #:
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def make_swagger_name(attribute_name):
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"""
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Convert a python variable name into a Swagger spec attribute name.
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In particular,
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* if name starts with ``x_``, return ``x-{camelCase}``
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* if name is ``ref``, return ``$ref``
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* else return the name converted to camelCase, with trailing underscores stripped
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:param str attribute_name: python attribute name
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:return: swagger name
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"""
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if attribute_name == 'ref':
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return "$ref"
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if attribute_name.startswith("x_"):
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return "x-" + camelize(attribute_name[2:], uppercase_first_letter=False)
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return camelize(attribute_name.rstrip('_'), uppercase_first_letter=False)
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def _bare_SwaggerDict(cls):
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assert issubclass(cls, SwaggerDict)
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result = cls.__new__(cls)
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OrderedDict.__init__(result) # no __init__ called for SwaggerDict subclasses!
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return result
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class SwaggerDict(OrderedDict):
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"""A particular type of OrderedDict, which maps all attribute accesses to dict lookups using
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:func:`.make_swagger_name`. Attribute names starting with ``_`` are set on the object as-is and are not included
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in the specification output.
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Used as a base class for all Swagger helper models.
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"""
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def __init__(self, **attrs):
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super(SwaggerDict, self).__init__()
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self._extras__ = attrs
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if type(self) == SwaggerDict:
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self._insert_extras__()
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def __setattr__(self, key, value):
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if key.startswith('_'):
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super(SwaggerDict, self).__setattr__(key, value)
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return
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if value is not None:
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self[make_swagger_name(key)] = value
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def __getattr__(self, item):
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if item.startswith('_'):
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raise AttributeError
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try:
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return self[make_swagger_name(item)]
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except KeyError:
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# raise_from is EXTREMELY slow, replaced with plain raise
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raise AttributeError("object of class " + type(self).__name__ + " has no attribute " + item)
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def __delattr__(self, item):
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if item.startswith('_'):
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super(SwaggerDict, self).__delattr__(item)
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return
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del self[make_swagger_name(item)]
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def _insert_extras__(self):
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"""
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From an ordering perspective, it is desired that extra attributes such as vendor extensions stay at the
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bottom of the object. However, python2.7's OrderedDict craps out if you try to insert into it before calling
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init. This means that subclasses must call super().__init__ as the first statement of their own __init__,
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which would result in the extra attributes being added first. For this reason, we defer the insertion of the
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attributes and require that subclasses call ._insert_extras__ at the end of their __init__ method.
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"""
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for attr, val in sorted(self._extras__.items()):
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setattr(self, attr, val)
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@staticmethod
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def _as_odict(obj, memo):
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"""Implementation detail of :meth:`.as_odict`"""
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if id(obj) in memo:
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return memo[id(obj)]
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if isinstance(obj, Promise) and hasattr(obj, '_proxy____cast'):
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# handle __proxy__ objects from django.utils.functional.lazy
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obj = obj._proxy____cast()
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if isinstance(obj, collections_abc.Mapping):
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result = OrderedDict()
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memo[id(obj)] = result
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items = obj.items()
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if not isinstance(obj, dict):
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items = sorted(items)
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for attr, val in items:
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result[SwaggerDict._as_odict(attr, memo)] = SwaggerDict._as_odict(val, memo)
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return result
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elif isinstance(obj, str):
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return force_real_str(obj)
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elif isinstance(obj, collections_abc.Iterable) and not isinstance(obj, collections_abc.Iterator):
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return type(obj)(SwaggerDict._as_odict(elem, memo) for elem in obj)
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elif isinstance(obj, enum.Enum):
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return obj.value
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return obj
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def as_odict(self):
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"""Convert this object into an ``OrderedDict`` instance.
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:rtype: OrderedDict
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"""
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return SwaggerDict._as_odict(self, {})
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def __reduce__(self):
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# for pickle support; this skips calls to all SwaggerDict __init__ methods and relies
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# on the already set attributes instead
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attrs = {k: v for k, v in vars(self).items() if not k.startswith('_NP_')}
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return _bare_SwaggerDict, (type(self),), attrs, None, iter(self.items())
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class Contact(SwaggerDict):
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def __init__(self, name=None, url=None, email=None, **extra):
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"""Swagger Contact object
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At least one of the following fields is required:
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:param str name: contact name
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:param str url: contact url
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:param str email: contact e-mail
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"""
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super(Contact, self).__init__(**extra)
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if name is None and url is None and email is None:
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raise AssertionError("one of name, url or email is requires for Swagger Contact object")
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self.name = name
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self.url = url
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self.email = email
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self._insert_extras__()
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class License(SwaggerDict):
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def __init__(self, name, url=None, **extra):
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"""Swagger License object
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:param str name: Required. License name
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:param str url: link to detailed license information
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"""
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super(License, self).__init__(**extra)
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if name is None:
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raise AssertionError("name is required for Swagger License object")
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self.name = name
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self.url = url
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self._insert_extras__()
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class Info(SwaggerDict):
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def __init__(self, title, default_version, description=None, terms_of_service=None, contact=None, license=None,
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**extra):
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"""Swagger Info object
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:param str title: Required. API title.
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:param str default_version: Required. API version string (not to be confused with Swagger spec version)
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:param str description: API description; markdown supported
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:param str terms_of_service: API terms of service; should be a URL
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:param Contact contact: contact object
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:param License license: license object
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"""
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super(Info, self).__init__(**extra)
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if title is None or default_version is None:
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raise AssertionError("title and version are required for Swagger info object")
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if contact is not None and not isinstance(contact, Contact):
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raise AssertionError("contact must be a Contact object")
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if license is not None and not isinstance(license, License):
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raise AssertionError("license must be a License object")
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self.title = title
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self._default_version = default_version
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self.description = description
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self.terms_of_service = terms_of_service
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self.contact = contact
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self.license = license
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self._insert_extras__()
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class Swagger(SwaggerDict):
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def __init__(self, info=None, _url=None, _prefix=None, _version=None, consumes=None, produces=None,
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security_definitions=None, security=None, paths=None, definitions=None, **extra):
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"""Root Swagger object.
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:param Info info: info object
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:param str _url: URL used for setting the API host and scheme
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:param str _prefix: api path prefix to use in setting basePath; this will be appended to the wsgi
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SCRIPT_NAME prefix or Django's FORCE_SCRIPT_NAME if applicable
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:param str _version: version string to override Info
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:param dict[str,dict] security_definitions: list of supported authentication mechanisms
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:param list[dict[str,list[str]]] security: authentication mechanisms accepted globally
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:param list[str] consumes: consumed MIME types; can be overridden in Operation
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:param list[str] produces: produced MIME types; can be overridden in Operation
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:param Paths paths: paths object
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:param dict[str,Schema] definitions: named models
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"""
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super(Swagger, self).__init__(**extra)
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self.swagger = '2.0'
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self.info = info
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self.info.version = _version or info._default_version
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if _url:
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url = urlparse.urlparse(_url)
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assert url.netloc and url.scheme, "if given, url must have both schema and netloc"
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self.host = url.netloc
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self.schemes = [url.scheme]
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self.base_path = self.get_base_path(get_script_prefix(), _prefix)
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self.consumes = consumes
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self.produces = produces
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self.security_definitions = filter_none(security_definitions)
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self.security = filter_none(security)
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self.paths = paths
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self.definitions = filter_none(definitions)
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self._insert_extras__()
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@classmethod
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def get_base_path(cls, script_prefix, api_prefix):
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"""Determine an appropriate value for ``basePath`` based on the SCRIPT_NAME and the api common prefix.
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:param str script_prefix: script prefix as defined by django ``get_script_prefix``
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:param str api_prefix: api common prefix
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:return: joined base path
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"""
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# avoid double slash when joining script_name with api_prefix
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if script_prefix and script_prefix.endswith('/'):
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script_prefix = script_prefix[:-1]
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if not api_prefix.startswith('/'):
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api_prefix = '/' + api_prefix
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base_path = script_prefix + api_prefix
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# ensure that the base path has a leading slash and no trailing slash
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if base_path and base_path.endswith('/'):
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base_path = base_path[:-1]
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if not base_path.startswith('/'):
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base_path = '/' + base_path
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return base_path
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class Paths(SwaggerDict):
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def __init__(self, paths, **extra):
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"""A listing of all the paths in the API.
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:param dict[str,PathItem] paths:
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"""
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super(Paths, self).__init__(**extra)
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for path, path_obj in paths.items():
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assert path.startswith("/")
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if path_obj is not None: # pragma: no cover
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self[path] = path_obj
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self._insert_extras__()
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class PathItem(SwaggerDict):
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OPERATION_NAMES = ['get', 'put', 'post', 'delete', 'options', 'head', 'patch']
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def __init__(self, get=None, put=None, post=None, delete=None, options=None,
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head=None, patch=None, parameters=None, **extra):
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"""Information about a single path
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:param Operation get: operation for GET
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:param Operation put: operation for PUT
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:param Operation post: operation for POST
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:param Operation delete: operation for DELETE
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:param Operation options: operation for OPTIONS
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:param Operation head: operation for HEAD
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:param Operation patch: operation for PATCH
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:param list[Parameter] parameters: parameters that apply to all operations
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"""
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super(PathItem, self).__init__(**extra)
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self.get = get
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self.head = head
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self.post = post
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self.put = put
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self.patch = patch
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self.delete = delete
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self.options = options
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self.parameters = filter_none(parameters)
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self._insert_extras__()
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@property
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def operations(self):
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"""A list of all standard Operations on this PathItem object. See :attr:`.OPERATION_NAMES`.
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:return: list of (method name, Operation) tuples
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:rtype: list[tuple[str,Operation]]
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"""
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return [(k, v) for k, v in self.items() if k in PathItem.OPERATION_NAMES and v]
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class Operation(SwaggerDict):
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def __init__(self, operation_id, responses, parameters=None, consumes=None, produces=None, summary=None,
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description=None, tags=None, security=None, **extra):
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"""Information about an API operation (path + http method combination)
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:param str operation_id: operation ID, should be unique across all operations
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:param Responses responses: responses returned
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:param list[Parameter] parameters: parameters accepted
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:param list[str] consumes: content types accepted
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:param list[str] produces: content types produced
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:param str summary: operation summary; should be < 120 characters
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:param str description: operation description; can be of any length and supports markdown
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:param list[str] tags: operation tags
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:param list[dict[str,list[str]]] security: list of security requirements
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"""
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||||
super(Operation, self).__init__(**extra)
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self.operation_id = operation_id
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||||
self.summary = summary
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||||
self.description = description
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||||
self.parameters = filter_none(parameters)
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||||
self.responses = responses
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self.consumes = filter_none(consumes)
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||||
self.produces = filter_none(produces)
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self.tags = filter_none(tags)
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||||
self.security = filter_none(security)
|
||||
self._insert_extras__()
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||||
|
||||
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||||
def _check_type(type, format, enum, pattern, items, _obj_type):
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||||
if items and type != TYPE_ARRAY:
|
||||
raise AssertionError("items can only be used when type is array")
|
||||
if type == TYPE_ARRAY and not items:
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||||
raise AssertionError("TYPE_ARRAY requires the items attribute")
|
||||
if pattern and type != TYPE_STRING:
|
||||
raise AssertionError("pattern can only be used when type is string")
|
||||
if (format or enum or pattern) and type in (TYPE_OBJECT, TYPE_ARRAY, None):
|
||||
raise AssertionError("[format, enum, pattern] can only be applied to primitive " + _obj_type)
|
||||
|
||||
|
||||
class Items(SwaggerDict):
|
||||
def __init__(self, type=None, format=None, enum=None, pattern=None, items=None, **extra):
|
||||
"""Used when defining an array :class:`.Parameter` to describe the array elements.
|
||||
|
||||
:param str type: type of the array elements; must not be ``object``
|
||||
:param str format: value format, see OpenAPI spec
|
||||
:param list enum: restrict possible values
|
||||
:param str pattern: pattern if type is ``string``
|
||||
:param Items items: only valid if `type` is ``array``
|
||||
"""
|
||||
super(Items, self).__init__(**extra)
|
||||
assert type is not None, "type is required!"
|
||||
self.type = type
|
||||
self.format = format
|
||||
self.enum = enum
|
||||
self.pattern = pattern
|
||||
self.items_ = items
|
||||
self._insert_extras__()
|
||||
_check_type(type, format, enum, pattern, items, self.__class__)
|
||||
|
||||
|
||||
class Parameter(SwaggerDict):
|
||||
def __init__(self, name, in_, description=None, required=None, schema=None,
|
||||
type=None, format=None, enum=None, pattern=None, items=None, default=None, **extra):
|
||||
"""Describe parameters accepted by an :class:`.Operation`. Each parameter should be a unique combination of
|
||||
(`name`, `in_`). ``body`` and ``form`` parameters in the same operation are mutually exclusive.
|
||||
|
||||
:param str name: parameter name
|
||||
:param str in_: parameter location
|
||||
:param str description: parameter description
|
||||
:param bool required: whether the parameter is required for the operation
|
||||
:param schema: required if `in_` is ``body``
|
||||
:type schema: Schema or SchemaRef
|
||||
:param str type: parameter type; required if `in_` is not ``body``; must not be ``object``
|
||||
:param str format: value format, see OpenAPI spec
|
||||
:param list enum: restrict possible values
|
||||
:param str pattern: pattern if type is ``string``
|
||||
:param Items items: only valid if `type` is ``array``
|
||||
:param default: default value if the parameter is not provided; must conform to parameter type
|
||||
"""
|
||||
super(Parameter, self).__init__(**extra)
|
||||
self.name = name
|
||||
self.in_ = in_
|
||||
self.description = description
|
||||
self.required = required
|
||||
self.schema = schema
|
||||
self.type = type
|
||||
self.format = format
|
||||
self.enum = enum
|
||||
self.pattern = pattern
|
||||
self.items_ = items
|
||||
self.default = default
|
||||
self._insert_extras__()
|
||||
if (not schema and not type) or (schema and type):
|
||||
raise AssertionError("either schema or type are required for Parameter object (not both)!")
|
||||
if schema and isinstance(schema, Schema):
|
||||
schema._remove_read_only()
|
||||
if self['in'] == IN_PATH:
|
||||
# path parameters must always be required
|
||||
assert required is not False, "path parameter cannot be optional"
|
||||
self.required = True
|
||||
if self['in'] != IN_BODY and schema is not None:
|
||||
raise AssertionError("schema can only be applied to a body Parameter, not %s" % type)
|
||||
if default and not type:
|
||||
raise AssertionError("default can only be applied to a non-body Parameter")
|
||||
_check_type(type, format, enum, pattern, items, self.__class__)
|
||||
|
||||
|
||||
class Schema(SwaggerDict):
|
||||
OR_REF = () #: useful for type-checking, e.g ``isinstance(obj, openapi.Schema.OR_REF)``
|
||||
|
||||
def __init__(self, title=None, description=None, type=None, format=None, enum=None, pattern=None, properties=None,
|
||||
additional_properties=None, required=None, items=None, default=None, read_only=None, **extra):
|
||||
"""Describes a complex object accepted as parameter or returned as a response.
|
||||
|
||||
:param str title: schema title
|
||||
:param str description: schema description
|
||||
:param str type: value type; required
|
||||
:param str format: value format, see OpenAPI spec
|
||||
:param list enum: restrict possible values
|
||||
:param str pattern: pattern if type is ``string``
|
||||
:param properties: object properties; required if `type` is ``object``
|
||||
:type properties: dict[str,Schema or SchemaRef]
|
||||
:param additional_properties: allow wildcard properties not listed in `properties`
|
||||
:type additional_properties: bool or Schema or SchemaRef
|
||||
:param list[str] required: list of required property names
|
||||
:param items: type of array items, only valid if `type` is ``array``
|
||||
:type items: Schema or SchemaRef
|
||||
:param default: only valid when insider another ``Schema``\\ 's ``properties``;
|
||||
the default value of this property if it is not provided, must conform to the type of this Schema
|
||||
:param read_only: only valid when insider another ``Schema``\\ 's ``properties``;
|
||||
declares the property as read only - it must only be sent as part of responses, never in requests
|
||||
"""
|
||||
super(Schema, self).__init__(**extra)
|
||||
if required is True or required is False:
|
||||
# common error
|
||||
raise AssertionError("the `required` attribute of schema must be an "
|
||||
"array of required property names, not a boolean!")
|
||||
assert type, "type is required!"
|
||||
self.title = title
|
||||
self.description = description
|
||||
self.required = filter_none(required)
|
||||
self.type = type
|
||||
self.properties = filter_none(properties)
|
||||
self.additional_properties = additional_properties
|
||||
self.format = format
|
||||
self.enum = enum
|
||||
self.pattern = pattern
|
||||
self.items_ = items
|
||||
self.read_only = read_only
|
||||
self.default = default
|
||||
self._insert_extras__()
|
||||
if (properties or (additional_properties is not None)) and type != TYPE_OBJECT:
|
||||
raise AssertionError("only object Schema can have properties")
|
||||
_check_type(type, format, enum, pattern, items, self.__class__)
|
||||
|
||||
def _remove_read_only(self):
|
||||
# readOnly is only valid for Schemas inside another Schema's properties;
|
||||
# when placing Schema elsewhere we must take care to remove the readOnly flag
|
||||
self.pop('readOnly', '')
|
||||
|
||||
|
||||
class _Ref(SwaggerDict):
|
||||
ref_name_re = re.compile(r"#/(?P<scope>.+)/(?P<name>[^/]+)$")
|
||||
|
||||
def __init__(self, resolver, name, scope, expected_type, ignore_unresolved=False):
|
||||
"""Base class for all reference types. A reference object has only one property, ``$ref``, which must be a JSON
|
||||
reference to a valid object in the specification, e.g. ``#/definitions/Article`` to refer to an article model.
|
||||
|
||||
:param ReferenceResolver resolver: component resolver which must contain the referenced object
|
||||
:param str name: referenced object name, e.g. "Article"
|
||||
:param str scope: reference scope, e.g. "definitions"
|
||||
:param type[SwaggerDict] expected_type: the expected type that will be asserted on the object found in resolver
|
||||
:param bool ignore_unresolved: do not throw if the referenced object does not exist
|
||||
"""
|
||||
super(_Ref, self).__init__()
|
||||
assert not type(self) == _Ref, "do not instantiate _Ref directly"
|
||||
ref_name = "#/{scope}/{name}".format(scope=scope, name=name)
|
||||
if not ignore_unresolved:
|
||||
obj = resolver.get(name, scope)
|
||||
assert isinstance(obj, expected_type), ref_name + " is a {actual}, not a {expected}" \
|
||||
.format(actual=type(obj).__name__, expected=expected_type.__name__)
|
||||
self.ref = ref_name
|
||||
|
||||
def resolve(self, resolver):
|
||||
"""Get the object targeted by this reference from the given component resolver.
|
||||
|
||||
:param ReferenceResolver resolver: component resolver which must contain the referenced object
|
||||
:returns: the target object
|
||||
"""
|
||||
ref_match = self.ref_name_re.match(self.ref)
|
||||
return resolver.getdefault(ref_match.group('name'), scope=ref_match.group('scope'))
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
if key == "$ref":
|
||||
return super(_Ref, self).__setitem__(key, value)
|
||||
raise NotImplementedError("only $ref can be set on Reference objects (not %s)" % key)
|
||||
|
||||
def __delitem__(self, key):
|
||||
raise NotImplementedError("cannot delete property of Reference object")
|
||||
|
||||
|
||||
class SchemaRef(_Ref):
|
||||
def __init__(self, resolver, schema_name, ignore_unresolved=False):
|
||||
"""Adds a reference to a named Schema defined in the ``#/definitions/`` object.
|
||||
|
||||
:param ReferenceResolver resolver: component resolver which must contain the definition
|
||||
:param str schema_name: schema name
|
||||
:param bool ignore_unresolved: do not throw if the referenced object does not exist
|
||||
"""
|
||||
assert SCHEMA_DEFINITIONS in resolver.scopes
|
||||
super(SchemaRef, self).__init__(resolver, schema_name, SCHEMA_DEFINITIONS, Schema, ignore_unresolved)
|
||||
|
||||
|
||||
Schema.OR_REF = (Schema, SchemaRef)
|
||||
|
||||
|
||||
def resolve_ref(ref_or_obj, resolver):
|
||||
"""Resolve `ref_or_obj` if it is a reference type. Return it unchanged if not.
|
||||
|
||||
:param ref_or_obj: object to dereference
|
||||
:type ref_or_obj: SwaggerDict or _Ref
|
||||
:param resolver: component resolver which must contain the referenced object
|
||||
"""
|
||||
if isinstance(ref_or_obj, _Ref):
|
||||
return ref_or_obj.resolve(resolver)
|
||||
return ref_or_obj
|
||||
|
||||
|
||||
class Responses(SwaggerDict):
|
||||
def __init__(self, responses, default=None, **extra):
|
||||
"""Describes the expected responses of an :class:`.Operation`.
|
||||
|
||||
:param responses: mapping of status code to response definition
|
||||
:type responses: dict[str or int,Response]
|
||||
:param Response default: description of the response structure to expect if another status code is returned
|
||||
"""
|
||||
super(Responses, self).__init__(**extra)
|
||||
for status, response in responses.items():
|
||||
if response is not None: # pragma: no cover
|
||||
self[str(status)] = response
|
||||
self.default = default
|
||||
self._insert_extras__()
|
||||
|
||||
|
||||
class Response(SwaggerDict):
|
||||
def __init__(self, description, schema=None, examples=None, **extra):
|
||||
"""Describes the structure of an operation's response.
|
||||
|
||||
:param str description: response description
|
||||
:param schema: structure of the response body
|
||||
:type schema: Schema or SchemaRef or rest_framework.serializers.Serializer
|
||||
or type[rest_framework.serializers.Serializer]
|
||||
:param dict examples: example bodies mapped by mime type
|
||||
"""
|
||||
super(Response, self).__init__(**extra)
|
||||
self.description = description
|
||||
self.schema = schema
|
||||
self.examples = examples
|
||||
self._insert_extras__()
|
||||
if schema and isinstance(schema, Schema):
|
||||
schema._remove_read_only()
|
||||
|
||||
|
||||
class ReferenceResolver(object):
|
||||
"""A mapping type intended for storing objects pointed at by Swagger Refs.
|
||||
Provides support and checks for different reference scopes, e.g. 'definitions'.
|
||||
|
||||
For example:
|
||||
|
||||
::
|
||||
|
||||
> components = ReferenceResolver('definitions', 'parameters')
|
||||
> definitions = components.with_scope('definitions')
|
||||
> definitions.set('Article', Schema(...))
|
||||
> print(components)
|
||||
{'definitions': OrderedDict([('Article', Schema(...)]), 'parameters': OrderedDict()}
|
||||
"""
|
||||
|
||||
def __init__(self, *scopes, **kwargs):
|
||||
"""
|
||||
:param str scopes: an enumeration of the valid scopes this resolver will contain
|
||||
"""
|
||||
force_init = kwargs.pop('force_init', False)
|
||||
if not force_init:
|
||||
raise AssertionError(
|
||||
"Creating an instance of ReferenceResolver almost certainly won't do what you want it to do.\n"
|
||||
"See https://github.com/axnsan12/drf-yasg/issues/211, "
|
||||
"https://github.com/axnsan12/drf-yasg/issues/271, "
|
||||
"https://github.com/axnsan12/drf-yasg/issues/325.\n"
|
||||
"Pass `force_init=True` to override this."
|
||||
)
|
||||
|
||||
self._objects = OrderedDict()
|
||||
self._force_scope = None
|
||||
for scope in scopes:
|
||||
assert isinstance(scope, str), "scope names must be strings"
|
||||
self._objects[scope] = OrderedDict()
|
||||
|
||||
def with_scope(self, scope):
|
||||
"""Return a view into this :class:`.ReferenceResolver` whose scope is defaulted and forced to `scope`.
|
||||
|
||||
:param str scope: target scope, must be in this resolver's `scopes`
|
||||
:return: the bound resolver
|
||||
:rtype: ReferenceResolver
|
||||
"""
|
||||
assert scope in self.scopes, "unknown scope %s" % scope
|
||||
ret = ReferenceResolver(force_init=True)
|
||||
ret._objects = self._objects
|
||||
ret._force_scope = scope
|
||||
return ret
|
||||
|
||||
def _check_scope(self, scope):
|
||||
real_scope = self._force_scope or scope
|
||||
if scope is not None:
|
||||
assert not self._force_scope or scope == self._force_scope, "cannot override forced scope"
|
||||
assert real_scope and real_scope in self._objects, "invalid scope %s" % scope
|
||||
return real_scope
|
||||
|
||||
def set(self, name, obj, scope=None):
|
||||
"""Set an object in the given scope, raise an error if it already exists.
|
||||
|
||||
:param str name: reference name
|
||||
:param obj: referenced object
|
||||
:param str scope: reference scope
|
||||
"""
|
||||
scope = self._check_scope(scope)
|
||||
assert obj is not None, "referenced objects cannot be None/null"
|
||||
assert name not in self._objects[scope], "#/%s/%s already exists" % (scope, name)
|
||||
self._objects[scope][name] = obj
|
||||
|
||||
def setdefault(self, name, maker, scope=None):
|
||||
"""Set an object in the given scope only if it does not exist.
|
||||
|
||||
:param str name: reference name
|
||||
:param function maker: object factory, called only if necessary
|
||||
:param str scope: reference scope
|
||||
"""
|
||||
scope = self._check_scope(scope)
|
||||
assert callable(maker), "setdefault expects a callable, not %s" % type(maker).__name__
|
||||
ret = self.getdefault(name, None, scope)
|
||||
if ret is None:
|
||||
ret = maker()
|
||||
value = self.getdefault(name, None, scope)
|
||||
assert ret is not None, "maker returned None; referenced objects cannot be None/null"
|
||||
if value is None:
|
||||
self.set(name, ret, scope)
|
||||
elif value != ret:
|
||||
logger.debug("during setdefault, maker for %s inserted a value and returned a different value", name)
|
||||
ret = value
|
||||
|
||||
return ret
|
||||
|
||||
def get(self, name, scope=None):
|
||||
"""Get an object from the given scope, raise an error if it does not exist.
|
||||
|
||||
:param str name: reference name
|
||||
:param str scope: reference scope
|
||||
:return: the object
|
||||
"""
|
||||
scope = self._check_scope(scope)
|
||||
assert name in self._objects[scope], "#/%s/%s is not defined" % (scope, name)
|
||||
return self._objects[scope][name]
|
||||
|
||||
def getdefault(self, name, default=None, scope=None):
|
||||
"""Get an object from the given scope or a default value if it does not exist.
|
||||
|
||||
:param str name: reference name
|
||||
:param default: the default value
|
||||
:param str scope: reference scope
|
||||
:return: the object or `default`
|
||||
"""
|
||||
scope = self._check_scope(scope)
|
||||
return self._objects[scope].get(name, default)
|
||||
|
||||
def has(self, name, scope=None):
|
||||
"""Check if an object exists in the given scope.
|
||||
|
||||
:param str name: reference name
|
||||
:param str scope: reference scope
|
||||
:return: True if the object exists
|
||||
:rtype: bool
|
||||
"""
|
||||
scope = self._check_scope(scope)
|
||||
return name in self._objects[scope]
|
||||
|
||||
def __iter__(self):
|
||||
if self._force_scope:
|
||||
return iter(self._objects[self._force_scope])
|
||||
return iter(self._objects)
|
||||
|
||||
@property
|
||||
def scopes(self):
|
||||
if self._force_scope:
|
||||
return [self._force_scope]
|
||||
return list(self._objects.keys())
|
||||
|
||||
# act as mapping
|
||||
def keys(self):
|
||||
if self._force_scope:
|
||||
return self._objects[self._force_scope].keys()
|
||||
return self._objects.keys()
|
||||
|
||||
def __getitem__(self, item):
|
||||
if self._force_scope:
|
||||
return self._objects[self._force_scope][item]
|
||||
return self._objects[item]
|
||||
|
||||
def __str__(self):
|
||||
return str(dict(self))
|
||||
Reference in New Issue
Block a user