# pylint: disable=too-many-lines
# --------------------------------------------------------------------------
#
# Copyright (c) Microsoft Corporation. All rights reserved.
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the ""Software""), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# --------------------------------------------------------------------------
# pyright: reportUnnecessaryTypeIgnoreComment=false
from base64 import b64decode, b64encode
import calendar
import datetime
import decimal
import email
from enum import Enum
import json
import logging
import re
import sys
import codecs
from typing import (
Dict,
Any,
cast,
Optional,
Union,
AnyStr,
IO,
Mapping,
Callable,
MutableMapping,
List,
)
try:
from urllib import quote # type: ignore
except ImportError:
from urllib.parse import quote
import xml.etree.ElementTree as ET
import isodate # type: ignore
from typing_extensions import Self
from azure.core.exceptions import DeserializationError, SerializationError
from azure.core.serialization import NULL as CoreNull
_BOM = codecs.BOM_UTF8.decode(encoding="utf-8")
JSON = MutableMapping[str, Any]
class RawDeserializer:
# Accept "text" because we're open minded people...
JSON_REGEXP = re.compile(r"^(application|text)/([a-z+.]+\+)?json$")
# Name used in context
CONTEXT_NAME = "deserialized_data"
@classmethod
def deserialize_from_text(cls, data: Optional[Union[AnyStr, IO]], content_type: Optional[str] = None) -> Any:
"""Decode data according to content-type.
Accept a stream of data as well, but will be load at once in memory for now.
If no content-type, will return the string version (not bytes, not stream)
:param data: Input, could be bytes or stream (will be decoded with UTF8) or text
:type data: str or bytes or IO
:param str content_type: The content type.
:return: The deserialized data.
:rtype: object
"""
if hasattr(data, "read"):
# Assume a stream
data = cast(IO, data).read()
if isinstance(data, bytes):
data_as_str = data.decode(encoding="utf-8-sig")
else:
# Explain to mypy the correct type.
data_as_str = cast(str, data)
# Remove Byte Order Mark if present in string
data_as_str = data_as_str.lstrip(_BOM)
if content_type is None:
return data
if cls.JSON_REGEXP.match(content_type):
try:
return json.loads(data_as_str)
except ValueError as err:
raise DeserializationError("JSON is invalid: {}".format(err), err) from err
elif "xml" in (content_type or []):
try:
try:
if isinstance(data, unicode): # type: ignore
# If I'm Python 2.7 and unicode XML will scream if I try a "fromstring" on unicode string
data_as_str = data_as_str.encode(encoding="utf-8") # type: ignore
except NameError:
pass
return ET.fromstring(data_as_str) # nosec
except ET.ParseError as err:
# It might be because the server has an issue, and returned JSON with
# content-type XML....
# So let's try a JSON load, and if it's still broken
# let's flow the initial exception
def _json_attemp(data):
try:
return True, json.loads(data)
except ValueError:
return False, None # Don't care about this one
success, json_result = _json_attemp(data)
if success:
return json_result
# If i'm here, it's not JSON, it's not XML, let's scream
# and raise the last context in this block (the XML exception)
# The function hack is because Py2.7 messes up with exception
# context otherwise.
_LOGGER.critical("Wasn't XML not JSON, failing")
raise DeserializationError("XML is invalid") from err
elif content_type.startswith("text/"):
return data_as_str
raise DeserializationError("Cannot deserialize content-type: {}".format(content_type))
@classmethod
def deserialize_from_http_generics(cls, body_bytes: Optional[Union[AnyStr, IO]], headers: Mapping) -> Any:
"""Deserialize from HTTP response.
Use bytes and headers to NOT use any requests/aiohttp or whatever
specific implementation.
Headers will tested for "content-type"
:param bytes body_bytes: The body of the response.
:param dict headers: The headers of the response.
:returns: The deserialized data.
:rtype: object
"""
# Try to use content-type from headers if available
content_type = None
if "content-type" in headers:
content_type = headers["content-type"].split(";")[0].strip().lower()
# Ouch, this server did not declare what it sent...
# Let's guess it's JSON...
# Also, since Autorest was considering that an empty body was a valid JSON,
# need that test as well....
else:
content_type = "application/json"
if body_bytes:
return cls.deserialize_from_text(body_bytes, content_type)
return None
_LOGGER = logging.getLogger(__name__)
try:
_long_type = long # type: ignore
except NameError:
_long_type = int
TZ_UTC = datetime.timezone.utc
_FLATTEN = re.compile(r"(? None:
self.additional_properties: Optional[Dict[str, Any]] = {}
for k in kwargs: # pylint: disable=consider-using-dict-items
if k not in self._attribute_map:
_LOGGER.warning("%s is not a known attribute of class %s and will be ignored", k, self.__class__)
elif k in self._validation and self._validation[k].get("readonly", False):
_LOGGER.warning("Readonly attribute %s will be ignored in class %s", k, self.__class__)
else:
setattr(self, k, kwargs[k])
def __eq__(self, other: Any) -> bool:
"""Compare objects by comparing all attributes.
:param object other: The object to compare
:returns: True if objects are equal
:rtype: bool
"""
if isinstance(other, self.__class__):
return self.__dict__ == other.__dict__
return False
def __ne__(self, other: Any) -> bool:
"""Compare objects by comparing all attributes.
:param object other: The object to compare
:returns: True if objects are not equal
:rtype: bool
"""
return not self.__eq__(other)
def __str__(self) -> str:
return str(self.__dict__)
@classmethod
def enable_additional_properties_sending(cls) -> None:
cls._attribute_map["additional_properties"] = {"key": "", "type": "{object}"}
@classmethod
def is_xml_model(cls) -> bool:
try:
cls._xml_map # type: ignore
except AttributeError:
return False
return True
@classmethod
def _create_xml_node(cls):
"""Create XML node.
:returns: The XML node
:rtype: xml.etree.ElementTree.Element
"""
try:
xml_map = cls._xml_map # type: ignore
except AttributeError:
xml_map = {}
return _create_xml_node(xml_map.get("name", cls.__name__), xml_map.get("prefix", None), xml_map.get("ns", None))
def serialize(self, keep_readonly: bool = False, **kwargs: Any) -> JSON:
"""Return the JSON that would be sent to server from this model.
This is an alias to `as_dict(full_restapi_key_transformer, keep_readonly=False)`.
If you want XML serialization, you can pass the kwargs is_xml=True.
:param bool keep_readonly: If you want to serialize the readonly attributes
:returns: A dict JSON compatible object
:rtype: dict
"""
serializer = Serializer(self._infer_class_models())
return serializer._serialize( # type: ignore # pylint: disable=protected-access
self, keep_readonly=keep_readonly, **kwargs
)
def as_dict(
self,
keep_readonly: bool = True,
key_transformer: Callable[[str, Dict[str, Any], Any], Any] = attribute_transformer,
**kwargs: Any
) -> JSON:
"""Return a dict that can be serialized using json.dump.
Advanced usage might optionally use a callback as parameter:
.. code::python
def my_key_transformer(key, attr_desc, value):
return key
Key is the attribute name used in Python. Attr_desc
is a dict of metadata. Currently contains 'type' with the
msrest type and 'key' with the RestAPI encoded key.
Value is the current value in this object.
The string returned will be used to serialize the key.
If the return type is a list, this is considered hierarchical
result dict.
See the three examples in this file:
- attribute_transformer
- full_restapi_key_transformer
- last_restapi_key_transformer
If you want XML serialization, you can pass the kwargs is_xml=True.
:param bool keep_readonly: If you want to serialize the readonly attributes
:param function key_transformer: A key transformer function.
:returns: A dict JSON compatible object
:rtype: dict
"""
serializer = Serializer(self._infer_class_models())
return serializer._serialize( # type: ignore # pylint: disable=protected-access
self, key_transformer=key_transformer, keep_readonly=keep_readonly, **kwargs
)
@classmethod
def _infer_class_models(cls):
try:
str_models = cls.__module__.rsplit(".", 1)[0]
models = sys.modules[str_models]
client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
if cls.__name__ not in client_models:
raise ValueError("Not Autorest generated code")
except Exception: # pylint: disable=broad-exception-caught
# Assume it's not Autorest generated (tests?). Add ourselves as dependencies.
client_models = {cls.__name__: cls}
return client_models
@classmethod
def deserialize(cls, data: Any, content_type: Optional[str] = None) -> Self:
"""Parse a str using the RestAPI syntax and return a model.
:param str data: A str using RestAPI structure. JSON by default.
:param str content_type: JSON by default, set application/xml if XML.
:returns: An instance of this model
:raises DeserializationError: if something went wrong
:rtype: Self
"""
deserializer = Deserializer(cls._infer_class_models())
return deserializer(cls.__name__, data, content_type=content_type) # type: ignore
@classmethod
def from_dict(
cls,
data: Any,
key_extractors: Optional[Callable[[str, Dict[str, Any], Any], Any]] = None,
content_type: Optional[str] = None,
) -> Self:
"""Parse a dict using given key extractor return a model.
By default consider key
extractors (rest_key_case_insensitive_extractor, attribute_key_case_insensitive_extractor
and last_rest_key_case_insensitive_extractor)
:param dict data: A dict using RestAPI structure
:param function key_extractors: A key extractor function.
:param str content_type: JSON by default, set application/xml if XML.
:returns: An instance of this model
:raises: DeserializationError if something went wrong
:rtype: Self
"""
deserializer = Deserializer(cls._infer_class_models())
deserializer.key_extractors = ( # type: ignore
[ # type: ignore
attribute_key_case_insensitive_extractor,
rest_key_case_insensitive_extractor,
last_rest_key_case_insensitive_extractor,
]
if key_extractors is None
else key_extractors
)
return deserializer(cls.__name__, data, content_type=content_type) # type: ignore
@classmethod
def _flatten_subtype(cls, key, objects):
if "_subtype_map" not in cls.__dict__:
return {}
result = dict(cls._subtype_map[key])
for valuetype in cls._subtype_map[key].values():
result.update(objects[valuetype]._flatten_subtype(key, objects)) # pylint: disable=protected-access
return result
@classmethod
def _classify(cls, response, objects):
"""Check the class _subtype_map for any child classes.
We want to ignore any inherited _subtype_maps.
:param dict response: The initial data
:param dict objects: The class objects
:returns: The class to be used
:rtype: class
"""
for subtype_key in cls.__dict__.get("_subtype_map", {}).keys():
subtype_value = None
if not isinstance(response, ET.Element):
rest_api_response_key = cls._get_rest_key_parts(subtype_key)[-1]
subtype_value = response.get(rest_api_response_key, None) or response.get(subtype_key, None)
else:
subtype_value = xml_key_extractor(subtype_key, cls._attribute_map[subtype_key], response)
if subtype_value:
# Try to match base class. Can be class name only
# (bug to fix in Autorest to support x-ms-discriminator-name)
if cls.__name__ == subtype_value:
return cls
flatten_mapping_type = cls._flatten_subtype(subtype_key, objects)
try:
return objects[flatten_mapping_type[subtype_value]] # type: ignore
except KeyError:
_LOGGER.warning(
"Subtype value %s has no mapping, use base class %s.",
subtype_value,
cls.__name__,
)
break
else:
_LOGGER.warning("Discriminator %s is absent or null, use base class %s.", subtype_key, cls.__name__)
break
return cls
@classmethod
def _get_rest_key_parts(cls, attr_key):
"""Get the RestAPI key of this attr, split it and decode part
:param str attr_key: Attribute key must be in attribute_map.
:returns: A list of RestAPI part
:rtype: list
"""
rest_split_key = _FLATTEN.split(cls._attribute_map[attr_key]["key"])
return [_decode_attribute_map_key(key_part) for key_part in rest_split_key]
def _decode_attribute_map_key(key):
"""This decode a key in an _attribute_map to the actual key we want to look at
inside the received data.
:param str key: A key string from the generated code
:returns: The decoded key
:rtype: str
"""
return key.replace("\\.", ".")
class Serializer: # pylint: disable=too-many-public-methods
"""Request object model serializer."""
basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
_xml_basic_types_serializers = {"bool": lambda x: str(x).lower()}
days = {0: "Mon", 1: "Tue", 2: "Wed", 3: "Thu", 4: "Fri", 5: "Sat", 6: "Sun"}
months = {
1: "Jan",
2: "Feb",
3: "Mar",
4: "Apr",
5: "May",
6: "Jun",
7: "Jul",
8: "Aug",
9: "Sep",
10: "Oct",
11: "Nov",
12: "Dec",
}
validation = {
"min_length": lambda x, y: len(x) < y,
"max_length": lambda x, y: len(x) > y,
"minimum": lambda x, y: x < y,
"maximum": lambda x, y: x > y,
"minimum_ex": lambda x, y: x <= y,
"maximum_ex": lambda x, y: x >= y,
"min_items": lambda x, y: len(x) < y,
"max_items": lambda x, y: len(x) > y,
"pattern": lambda x, y: not re.match(y, x, re.UNICODE),
"unique": lambda x, y: len(x) != len(set(x)),
"multiple": lambda x, y: x % y != 0,
}
def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
self.serialize_type = {
"iso-8601": Serializer.serialize_iso,
"rfc-1123": Serializer.serialize_rfc,
"unix-time": Serializer.serialize_unix,
"duration": Serializer.serialize_duration,
"date": Serializer.serialize_date,
"time": Serializer.serialize_time,
"decimal": Serializer.serialize_decimal,
"long": Serializer.serialize_long,
"bytearray": Serializer.serialize_bytearray,
"base64": Serializer.serialize_base64,
"object": self.serialize_object,
"[]": self.serialize_iter,
"{}": self.serialize_dict,
}
self.dependencies: Dict[str, type] = dict(classes) if classes else {}
self.key_transformer = full_restapi_key_transformer
self.client_side_validation = True
def _serialize( # pylint: disable=too-many-nested-blocks, too-many-branches, too-many-statements, too-many-locals
self, target_obj, data_type=None, **kwargs
):
"""Serialize data into a string according to type.
:param object target_obj: The data to be serialized.
:param str data_type: The type to be serialized from.
:rtype: str, dict
:raises SerializationError: if serialization fails.
:returns: The serialized data.
"""
key_transformer = kwargs.get("key_transformer", self.key_transformer)
keep_readonly = kwargs.get("keep_readonly", False)
if target_obj is None:
return None
attr_name = None
class_name = target_obj.__class__.__name__
if data_type:
return self.serialize_data(target_obj, data_type, **kwargs)
if not hasattr(target_obj, "_attribute_map"):
data_type = type(target_obj).__name__
if data_type in self.basic_types.values():
return self.serialize_data(target_obj, data_type, **kwargs)
# Force "is_xml" kwargs if we detect a XML model
try:
is_xml_model_serialization = kwargs["is_xml"]
except KeyError:
is_xml_model_serialization = kwargs.setdefault("is_xml", target_obj.is_xml_model())
serialized = {}
if is_xml_model_serialization:
serialized = target_obj._create_xml_node() # pylint: disable=protected-access
try:
attributes = target_obj._attribute_map # pylint: disable=protected-access
for attr, attr_desc in attributes.items():
attr_name = attr
if not keep_readonly and target_obj._validation.get( # pylint: disable=protected-access
attr_name, {}
).get("readonly", False):
continue
if attr_name == "additional_properties" and attr_desc["key"] == "":
if target_obj.additional_properties is not None:
serialized.update(target_obj.additional_properties)
continue
try:
orig_attr = getattr(target_obj, attr)
if is_xml_model_serialization:
pass # Don't provide "transformer" for XML for now. Keep "orig_attr"
else: # JSON
keys, orig_attr = key_transformer(attr, attr_desc.copy(), orig_attr)
keys = keys if isinstance(keys, list) else [keys]
kwargs["serialization_ctxt"] = attr_desc
new_attr = self.serialize_data(orig_attr, attr_desc["type"], **kwargs)
if is_xml_model_serialization:
xml_desc = attr_desc.get("xml", {})
xml_name = xml_desc.get("name", attr_desc["key"])
xml_prefix = xml_desc.get("prefix", None)
xml_ns = xml_desc.get("ns", None)
if xml_desc.get("attr", False):
if xml_ns:
ET.register_namespace(xml_prefix, xml_ns)
xml_name = "{{{}}}{}".format(xml_ns, xml_name)
serialized.set(xml_name, new_attr) # type: ignore
continue
if xml_desc.get("text", False):
serialized.text = new_attr # type: ignore
continue
if isinstance(new_attr, list):
serialized.extend(new_attr) # type: ignore
elif isinstance(new_attr, ET.Element):
# If the down XML has no XML/Name,
# we MUST replace the tag with the local tag. But keeping the namespaces.
if "name" not in getattr(orig_attr, "_xml_map", {}):
splitted_tag = new_attr.tag.split("}")
if len(splitted_tag) == 2: # Namespace
new_attr.tag = "}".join([splitted_tag[0], xml_name])
else:
new_attr.tag = xml_name
serialized.append(new_attr) # type: ignore
else: # That's a basic type
# Integrate namespace if necessary
local_node = _create_xml_node(xml_name, xml_prefix, xml_ns)
local_node.text = str(new_attr)
serialized.append(local_node) # type: ignore
else: # JSON
for k in reversed(keys): # type: ignore
new_attr = {k: new_attr}
_new_attr = new_attr
_serialized = serialized
for k in keys: # type: ignore
if k not in _serialized:
_serialized.update(_new_attr) # type: ignore
_new_attr = _new_attr[k] # type: ignore
_serialized = _serialized[k]
except ValueError as err:
if isinstance(err, SerializationError):
raise
except (AttributeError, KeyError, TypeError) as err:
msg = "Attribute {} in object {} cannot be serialized.\n{}".format(attr_name, class_name, str(target_obj))
raise SerializationError(msg) from err
return serialized
def body(self, data, data_type, **kwargs):
"""Serialize data intended for a request body.
:param object data: The data to be serialized.
:param str data_type: The type to be serialized from.
:rtype: dict
:raises SerializationError: if serialization fails.
:raises ValueError: if data is None
:returns: The serialized request body
"""
# Just in case this is a dict
internal_data_type_str = data_type.strip("[]{}")
internal_data_type = self.dependencies.get(internal_data_type_str, None)
try:
is_xml_model_serialization = kwargs["is_xml"]
except KeyError:
if internal_data_type and issubclass(internal_data_type, Model):
is_xml_model_serialization = kwargs.setdefault("is_xml", internal_data_type.is_xml_model())
else:
is_xml_model_serialization = False
if internal_data_type and not isinstance(internal_data_type, Enum):
try:
deserializer = Deserializer(self.dependencies)
# Since it's on serialization, it's almost sure that format is not JSON REST
# We're not able to deal with additional properties for now.
deserializer.additional_properties_detection = False
if is_xml_model_serialization:
deserializer.key_extractors = [ # type: ignore
attribute_key_case_insensitive_extractor,
]
else:
deserializer.key_extractors = [
rest_key_case_insensitive_extractor,
attribute_key_case_insensitive_extractor,
last_rest_key_case_insensitive_extractor,
]
data = deserializer._deserialize(data_type, data) # pylint: disable=protected-access
except DeserializationError as err:
raise SerializationError("Unable to build a model: " + str(err)) from err
return self._serialize(data, data_type, **kwargs)
def url(self, name, data, data_type, **kwargs):
"""Serialize data intended for a URL path.
:param str name: The name of the URL path parameter.
:param object data: The data to be serialized.
:param str data_type: The type to be serialized from.
:rtype: str
:returns: The serialized URL path
:raises TypeError: if serialization fails.
:raises ValueError: if data is None
"""
try:
output = self.serialize_data(data, data_type, **kwargs)
if data_type == "bool":
output = json.dumps(output)
if kwargs.get("skip_quote") is True:
output = str(output)
output = output.replace("{", quote("{")).replace("}", quote("}"))
else:
output = quote(str(output), safe="")
except SerializationError as exc:
raise TypeError("{} must be type {}.".format(name, data_type)) from exc
return output
def query(self, name, data, data_type, **kwargs):
"""Serialize data intended for a URL query.
:param str name: The name of the query parameter.
:param object data: The data to be serialized.
:param str data_type: The type to be serialized from.
:rtype: str, list
:raises TypeError: if serialization fails.
:raises ValueError: if data is None
:returns: The serialized query parameter
"""
try:
# Treat the list aside, since we don't want to encode the div separator
if data_type.startswith("["):
internal_data_type = data_type[1:-1]
do_quote = not kwargs.get("skip_quote", False)
return self.serialize_iter(data, internal_data_type, do_quote=do_quote, **kwargs)
# Not a list, regular serialization
output = self.serialize_data(data, data_type, **kwargs)
if data_type == "bool":
output = json.dumps(output)
if kwargs.get("skip_quote") is True:
output = str(output)
else:
output = quote(str(output), safe="")
except SerializationError as exc:
raise TypeError("{} must be type {}.".format(name, data_type)) from exc
return str(output)
def header(self, name, data, data_type, **kwargs):
"""Serialize data intended for a request header.
:param str name: The name of the header.
:param object data: The data to be serialized.
:param str data_type: The type to be serialized from.
:rtype: str
:raises TypeError: if serialization fails.
:raises ValueError: if data is None
:returns: The serialized header
"""
try:
if data_type in ["[str]"]:
data = ["" if d is None else d for d in data]
output = self.serialize_data(data, data_type, **kwargs)
if data_type == "bool":
output = json.dumps(output)
except SerializationError as exc:
raise TypeError("{} must be type {}.".format(name, data_type)) from exc
return str(output)
def serialize_data(self, data, data_type, **kwargs):
"""Serialize generic data according to supplied data type.
:param object data: The data to be serialized.
:param str data_type: The type to be serialized from.
:raises AttributeError: if required data is None.
:raises ValueError: if data is None
:raises SerializationError: if serialization fails.
:returns: The serialized data.
:rtype: str, int, float, bool, dict, list
"""
if data is None:
raise ValueError("No value for given attribute")
try:
if data is CoreNull:
return None
if data_type in self.basic_types.values():
return self.serialize_basic(data, data_type, **kwargs)
if data_type in self.serialize_type:
return self.serialize_type[data_type](data, **kwargs)
# If dependencies is empty, try with current data class
# It has to be a subclass of Enum anyway
enum_type = self.dependencies.get(data_type, data.__class__)
if issubclass(enum_type, Enum):
return Serializer.serialize_enum(data, enum_obj=enum_type)
iter_type = data_type[0] + data_type[-1]
if iter_type in self.serialize_type:
return self.serialize_type[iter_type](data, data_type[1:-1], **kwargs)
except (ValueError, TypeError) as err:
msg = "Unable to serialize value: {!r} as type: {!r}."
raise SerializationError(msg.format(data, data_type)) from err
return self._serialize(data, **kwargs)
@classmethod
def _get_custom_serializers(cls, data_type, **kwargs): # pylint: disable=inconsistent-return-statements
custom_serializer = kwargs.get("basic_types_serializers", {}).get(data_type)
if custom_serializer:
return custom_serializer
if kwargs.get("is_xml", False):
return cls._xml_basic_types_serializers.get(data_type)
@classmethod
def serialize_basic(cls, data, data_type, **kwargs):
"""Serialize basic builting data type.
Serializes objects to str, int, float or bool.
Possible kwargs:
- basic_types_serializers dict[str, callable] : If set, use the callable as serializer
- is_xml bool : If set, use xml_basic_types_serializers
:param obj data: Object to be serialized.
:param str data_type: Type of object in the iterable.
:rtype: str, int, float, bool
:return: serialized object
"""
custom_serializer = cls._get_custom_serializers(data_type, **kwargs)
if custom_serializer:
return custom_serializer(data)
if data_type == "str":
return cls.serialize_unicode(data)
return eval(data_type)(data) # nosec # pylint: disable=eval-used
@classmethod
def serialize_unicode(cls, data):
"""Special handling for serializing unicode strings in Py2.
Encode to UTF-8 if unicode, otherwise handle as a str.
:param str data: Object to be serialized.
:rtype: str
:return: serialized object
"""
try: # If I received an enum, return its value
return data.value
except AttributeError:
pass
try:
if isinstance(data, unicode): # type: ignore
# Don't change it, JSON and XML ElementTree are totally able
# to serialize correctly u'' strings
return data
except NameError:
return str(data)
return str(data)
def serialize_iter(self, data, iter_type, div=None, **kwargs):
"""Serialize iterable.
Supported kwargs:
- serialization_ctxt dict : The current entry of _attribute_map, or same format.
serialization_ctxt['type'] should be same as data_type.
- is_xml bool : If set, serialize as XML
:param list data: Object to be serialized.
:param str iter_type: Type of object in the iterable.
:param str div: If set, this str will be used to combine the elements
in the iterable into a combined string. Default is 'None'.
Defaults to False.
:rtype: list, str
:return: serialized iterable
"""
if isinstance(data, str):
raise SerializationError("Refuse str type as a valid iter type.")
serialization_ctxt = kwargs.get("serialization_ctxt", {})
is_xml = kwargs.get("is_xml", False)
serialized = []
for d in data:
try:
serialized.append(self.serialize_data(d, iter_type, **kwargs))
except ValueError as err:
if isinstance(err, SerializationError):
raise
serialized.append(None)
if kwargs.get("do_quote", False):
serialized = ["" if s is None else quote(str(s), safe="") for s in serialized]
if div:
serialized = ["" if s is None else str(s) for s in serialized]
serialized = div.join(serialized)
if "xml" in serialization_ctxt or is_xml:
# XML serialization is more complicated
xml_desc = serialization_ctxt.get("xml", {})
xml_name = xml_desc.get("name")
if not xml_name:
xml_name = serialization_ctxt["key"]
# Create a wrap node if necessary (use the fact that Element and list have "append")
is_wrapped = xml_desc.get("wrapped", False)
node_name = xml_desc.get("itemsName", xml_name)
if is_wrapped:
final_result = _create_xml_node(xml_name, xml_desc.get("prefix", None), xml_desc.get("ns", None))
else:
final_result = []
# All list elements to "local_node"
for el in serialized:
if isinstance(el, ET.Element):
el_node = el
else:
el_node = _create_xml_node(node_name, xml_desc.get("prefix", None), xml_desc.get("ns", None))
if el is not None: # Otherwise it writes "None" :-p
el_node.text = str(el)
final_result.append(el_node)
return final_result
return serialized
def serialize_dict(self, attr, dict_type, **kwargs):
"""Serialize a dictionary of objects.
:param dict attr: Object to be serialized.
:param str dict_type: Type of object in the dictionary.
:rtype: dict
:return: serialized dictionary
"""
serialization_ctxt = kwargs.get("serialization_ctxt", {})
serialized = {}
for key, value in attr.items():
try:
serialized[self.serialize_unicode(key)] = self.serialize_data(value, dict_type, **kwargs)
except ValueError as err:
if isinstance(err, SerializationError):
raise
serialized[self.serialize_unicode(key)] = None
if "xml" in serialization_ctxt:
# XML serialization is more complicated
xml_desc = serialization_ctxt["xml"]
xml_name = xml_desc["name"]
final_result = _create_xml_node(xml_name, xml_desc.get("prefix", None), xml_desc.get("ns", None))
for key, value in serialized.items():
ET.SubElement(final_result, key).text = value
return final_result
return serialized
def serialize_object(self, attr, **kwargs): # pylint: disable=too-many-return-statements
"""Serialize a generic object.
This will be handled as a dictionary. If object passed in is not
a basic type (str, int, float, dict, list) it will simply be
cast to str.
:param dict attr: Object to be serialized.
:rtype: dict or str
:return: serialized object
"""
if attr is None:
return None
if isinstance(attr, ET.Element):
return attr
obj_type = type(attr)
if obj_type in self.basic_types:
return self.serialize_basic(attr, self.basic_types[obj_type], **kwargs)
if obj_type is _long_type:
return self.serialize_long(attr)
if obj_type is str:
return self.serialize_unicode(attr)
if obj_type is datetime.datetime:
return self.serialize_iso(attr)
if obj_type is datetime.date:
return self.serialize_date(attr)
if obj_type is datetime.time:
return self.serialize_time(attr)
if obj_type is datetime.timedelta:
return self.serialize_duration(attr)
if obj_type is decimal.Decimal:
return self.serialize_decimal(attr)
# If it's a model or I know this dependency, serialize as a Model
if obj_type in self.dependencies.values() or isinstance(attr, Model):
return self._serialize(attr)
if obj_type == dict:
serialized = {}
for key, value in attr.items():
try:
serialized[self.serialize_unicode(key)] = self.serialize_object(value, **kwargs)
except ValueError:
serialized[self.serialize_unicode(key)] = None
return serialized
if obj_type == list:
serialized = []
for obj in attr:
try:
serialized.append(self.serialize_object(obj, **kwargs))
except ValueError:
pass
return serialized
return str(attr)
@staticmethod
def serialize_enum(attr, enum_obj=None):
try:
result = attr.value
except AttributeError:
result = attr
try:
enum_obj(result) # type: ignore
return result
except ValueError as exc:
for enum_value in enum_obj: # type: ignore
if enum_value.value.lower() == str(attr).lower():
return enum_value.value
error = "{!r} is not valid value for enum {!r}"
raise SerializationError(error.format(attr, enum_obj)) from exc
@staticmethod
def serialize_bytearray(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize bytearray into base-64 string.
:param str attr: Object to be serialized.
:rtype: str
:return: serialized base64
"""
return b64encode(attr).decode()
@staticmethod
def serialize_base64(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize str into base-64 string.
:param str attr: Object to be serialized.
:rtype: str
:return: serialized base64
"""
encoded = b64encode(attr).decode("ascii")
return encoded.strip("=").replace("+", "-").replace("/", "_")
@staticmethod
def serialize_decimal(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Decimal object to float.
:param decimal attr: Object to be serialized.
:rtype: float
:return: serialized decimal
"""
return float(attr)
@staticmethod
def serialize_long(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize long (Py2) or int (Py3).
:param int attr: Object to be serialized.
:rtype: int/long
:return: serialized long
"""
return _long_type(attr)
@staticmethod
def serialize_date(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Date object into ISO-8601 formatted string.
:param Date attr: Object to be serialized.
:rtype: str
:return: serialized date
"""
if isinstance(attr, str):
attr = isodate.parse_date(attr)
t = "{:04}-{:02}-{:02}".format(attr.year, attr.month, attr.day)
return t
@staticmethod
def serialize_time(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Time object into ISO-8601 formatted string.
:param datetime.time attr: Object to be serialized.
:rtype: str
:return: serialized time
"""
if isinstance(attr, str):
attr = isodate.parse_time(attr)
t = "{:02}:{:02}:{:02}".format(attr.hour, attr.minute, attr.second)
if attr.microsecond:
t += ".{:02}".format(attr.microsecond)
return t
@staticmethod
def serialize_duration(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize TimeDelta object into ISO-8601 formatted string.
:param TimeDelta attr: Object to be serialized.
:rtype: str
:return: serialized duration
"""
if isinstance(attr, str):
attr = isodate.parse_duration(attr)
return isodate.duration_isoformat(attr)
@staticmethod
def serialize_rfc(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Datetime object into RFC-1123 formatted string.
:param Datetime attr: Object to be serialized.
:rtype: str
:raises TypeError: if format invalid.
:return: serialized rfc
"""
try:
if not attr.tzinfo:
_LOGGER.warning("Datetime with no tzinfo will be considered UTC.")
utc = attr.utctimetuple()
except AttributeError as exc:
raise TypeError("RFC1123 object must be valid Datetime object.") from exc
return "{}, {:02} {} {:04} {:02}:{:02}:{:02} GMT".format(
Serializer.days[utc.tm_wday],
utc.tm_mday,
Serializer.months[utc.tm_mon],
utc.tm_year,
utc.tm_hour,
utc.tm_min,
utc.tm_sec,
)
@staticmethod
def serialize_iso(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Datetime object into ISO-8601 formatted string.
:param Datetime attr: Object to be serialized.
:rtype: str
:raises SerializationError: if format invalid.
:return: serialized iso
"""
if isinstance(attr, str):
attr = isodate.parse_datetime(attr)
try:
if not attr.tzinfo:
_LOGGER.warning("Datetime with no tzinfo will be considered UTC.")
utc = attr.utctimetuple()
if utc.tm_year > 9999 or utc.tm_year < 1:
raise OverflowError("Hit max or min date")
microseconds = str(attr.microsecond).rjust(6, "0").rstrip("0").ljust(3, "0")
if microseconds:
microseconds = "." + microseconds
date = "{:04}-{:02}-{:02}T{:02}:{:02}:{:02}".format(
utc.tm_year, utc.tm_mon, utc.tm_mday, utc.tm_hour, utc.tm_min, utc.tm_sec
)
return date + microseconds + "Z"
except (ValueError, OverflowError) as err:
msg = "Unable to serialize datetime object."
raise SerializationError(msg) from err
except AttributeError as err:
msg = "ISO-8601 object must be valid Datetime object."
raise TypeError(msg) from err
@staticmethod
def serialize_unix(attr, **kwargs): # pylint: disable=unused-argument
"""Serialize Datetime object into IntTime format.
This is represented as seconds.
:param Datetime attr: Object to be serialized.
:rtype: int
:raises SerializationError: if format invalid
:return: serialied unix
"""
if isinstance(attr, int):
return attr
try:
if not attr.tzinfo:
_LOGGER.warning("Datetime with no tzinfo will be considered UTC.")
return int(calendar.timegm(attr.utctimetuple()))
except AttributeError as exc:
raise TypeError("Unix time object must be valid Datetime object.") from exc
def rest_key_extractor(attr, attr_desc, data): # pylint: disable=unused-argument
key = attr_desc["key"]
working_data = data
while "." in key:
# Need the cast, as for some reasons "split" is typed as list[str | Any]
dict_keys = cast(List[str], _FLATTEN.split(key))
if len(dict_keys) == 1:
key = _decode_attribute_map_key(dict_keys[0])
break
working_key = _decode_attribute_map_key(dict_keys[0])
working_data = working_data.get(working_key, data)
if working_data is None:
# If at any point while following flatten JSON path see None, it means
# that all properties under are None as well
return None
key = ".".join(dict_keys[1:])
return working_data.get(key)
def rest_key_case_insensitive_extractor( # pylint: disable=unused-argument, inconsistent-return-statements
attr, attr_desc, data
):
key = attr_desc["key"]
working_data = data
while "." in key:
dict_keys = _FLATTEN.split(key)
if len(dict_keys) == 1:
key = _decode_attribute_map_key(dict_keys[0])
break
working_key = _decode_attribute_map_key(dict_keys[0])
working_data = attribute_key_case_insensitive_extractor(working_key, None, working_data)
if working_data is None:
# If at any point while following flatten JSON path see None, it means
# that all properties under are None as well
return None
key = ".".join(dict_keys[1:])
if working_data:
return attribute_key_case_insensitive_extractor(key, None, working_data)
def last_rest_key_extractor(attr, attr_desc, data): # pylint: disable=unused-argument
"""Extract the attribute in "data" based on the last part of the JSON path key.
:param str attr: The attribute to extract
:param dict attr_desc: The attribute description
:param dict data: The data to extract from
:rtype: object
:returns: The extracted attribute
"""
key = attr_desc["key"]
dict_keys = _FLATTEN.split(key)
return attribute_key_extractor(dict_keys[-1], None, data)
def last_rest_key_case_insensitive_extractor(attr, attr_desc, data): # pylint: disable=unused-argument
"""Extract the attribute in "data" based on the last part of the JSON path key.
This is the case insensitive version of "last_rest_key_extractor"
:param str attr: The attribute to extract
:param dict attr_desc: The attribute description
:param dict data: The data to extract from
:rtype: object
:returns: The extracted attribute
"""
key = attr_desc["key"]
dict_keys = _FLATTEN.split(key)
return attribute_key_case_insensitive_extractor(dict_keys[-1], None, data)
def attribute_key_extractor(attr, _, data):
return data.get(attr)
def attribute_key_case_insensitive_extractor(attr, _, data):
found_key = None
lower_attr = attr.lower()
for key in data:
if lower_attr == key.lower():
found_key = key
break
return data.get(found_key)
def _extract_name_from_internal_type(internal_type):
"""Given an internal type XML description, extract correct XML name with namespace.
:param dict internal_type: An model type
:rtype: tuple
:returns: A tuple XML name + namespace dict
"""
internal_type_xml_map = getattr(internal_type, "_xml_map", {})
xml_name = internal_type_xml_map.get("name", internal_type.__name__)
xml_ns = internal_type_xml_map.get("ns", None)
if xml_ns:
xml_name = "{{{}}}{}".format(xml_ns, xml_name)
return xml_name
def xml_key_extractor(attr, attr_desc, data): # pylint: disable=unused-argument,too-many-return-statements
if isinstance(data, dict):
return None
# Test if this model is XML ready first
if not isinstance(data, ET.Element):
return None
xml_desc = attr_desc.get("xml", {})
xml_name = xml_desc.get("name", attr_desc["key"])
# Look for a children
is_iter_type = attr_desc["type"].startswith("[")
is_wrapped = xml_desc.get("wrapped", False)
internal_type = attr_desc.get("internalType", None)
internal_type_xml_map = getattr(internal_type, "_xml_map", {})
# Integrate namespace if necessary
xml_ns = xml_desc.get("ns", internal_type_xml_map.get("ns", None))
if xml_ns:
xml_name = "{{{}}}{}".format(xml_ns, xml_name)
# If it's an attribute, that's simple
if xml_desc.get("attr", False):
return data.get(xml_name)
# If it's x-ms-text, that's simple too
if xml_desc.get("text", False):
return data.text
# Scenario where I take the local name:
# - Wrapped node
# - Internal type is an enum (considered basic types)
# - Internal type has no XML/Name node
if is_wrapped or (internal_type and (issubclass(internal_type, Enum) or "name" not in internal_type_xml_map)):
children = data.findall(xml_name)
# If internal type has a local name and it's not a list, I use that name
elif not is_iter_type and internal_type and "name" in internal_type_xml_map:
xml_name = _extract_name_from_internal_type(internal_type)
children = data.findall(xml_name)
# That's an array
else:
if internal_type: # Complex type, ignore itemsName and use the complex type name
items_name = _extract_name_from_internal_type(internal_type)
else:
items_name = xml_desc.get("itemsName", xml_name)
children = data.findall(items_name)
if len(children) == 0:
if is_iter_type:
if is_wrapped:
return None # is_wrapped no node, we want None
return [] # not wrapped, assume empty list
return None # Assume it's not there, maybe an optional node.
# If is_iter_type and not wrapped, return all found children
if is_iter_type:
if not is_wrapped:
return children
# Iter and wrapped, should have found one node only (the wrap one)
if len(children) != 1:
raise DeserializationError(
"Tried to deserialize an array not wrapped, and found several nodes '{}'. Maybe you should declare this array as wrapped?".format( # pylint: disable=line-too-long
xml_name
)
)
return list(children[0]) # Might be empty list and that's ok.
# Here it's not a itertype, we should have found one element only or empty
if len(children) > 1:
raise DeserializationError("Find several XML '{}' where it was not expected".format(xml_name))
return children[0]
class Deserializer:
"""Response object model deserializer.
:param dict classes: Class type dictionary for deserializing complex types.
:ivar list key_extractors: Ordered list of extractors to be used by this deserializer.
"""
basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
valid_date = re.compile(r"\d{4}[-]\d{2}[-]\d{2}T\d{2}:\d{2}:\d{2}\.?\d*Z?[-+]?[\d{2}]?:?[\d{2}]?")
def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
self.deserialize_type = {
"iso-8601": Deserializer.deserialize_iso,
"rfc-1123": Deserializer.deserialize_rfc,
"unix-time": Deserializer.deserialize_unix,
"duration": Deserializer.deserialize_duration,
"date": Deserializer.deserialize_date,
"time": Deserializer.deserialize_time,
"decimal": Deserializer.deserialize_decimal,
"long": Deserializer.deserialize_long,
"bytearray": Deserializer.deserialize_bytearray,
"base64": Deserializer.deserialize_base64,
"object": self.deserialize_object,
"[]": self.deserialize_iter,
"{}": self.deserialize_dict,
}
self.deserialize_expected_types = {
"duration": (isodate.Duration, datetime.timedelta),
"iso-8601": (datetime.datetime),
}
self.dependencies: Dict[str, type] = dict(classes) if classes else {}
self.key_extractors = [rest_key_extractor, xml_key_extractor]
# Additional properties only works if the "rest_key_extractor" is used to
# extract the keys. Making it to work whatever the key extractor is too much
# complicated, with no real scenario for now.
# So adding a flag to disable additional properties detection. This flag should be
# used if your expect the deserialization to NOT come from a JSON REST syntax.
# Otherwise, result are unexpected
self.additional_properties_detection = True
def __call__(self, target_obj, response_data, content_type=None):
"""Call the deserializer to process a REST response.
:param str target_obj: Target data type to deserialize to.
:param requests.Response response_data: REST response object.
:param str content_type: Swagger "produces" if available.
:raises DeserializationError: if deserialization fails.
:return: Deserialized object.
:rtype: object
"""
data = self._unpack_content(response_data, content_type)
return self._deserialize(target_obj, data)
def _deserialize(self, target_obj, data): # pylint: disable=inconsistent-return-statements
"""Call the deserializer on a model.
Data needs to be already deserialized as JSON or XML ElementTree
:param str target_obj: Target data type to deserialize to.
:param object data: Object to deserialize.
:raises DeserializationError: if deserialization fails.
:return: Deserialized object.
:rtype: object
"""
# This is already a model, go recursive just in case
if hasattr(data, "_attribute_map"):
constants = [name for name, config in getattr(data, "_validation", {}).items() if config.get("constant")]
try:
for attr, mapconfig in data._attribute_map.items(): # pylint: disable=protected-access
if attr in constants:
continue
value = getattr(data, attr)
if value is None:
continue
local_type = mapconfig["type"]
internal_data_type = local_type.strip("[]{}")
if internal_data_type not in self.dependencies or isinstance(internal_data_type, Enum):
continue
setattr(data, attr, self._deserialize(local_type, value))
return data
except AttributeError:
return
response, class_name = self._classify_target(target_obj, data)
if isinstance(response, str):
return self.deserialize_data(data, response)
if isinstance(response, type) and issubclass(response, Enum):
return self.deserialize_enum(data, response)
if data is None or data is CoreNull:
return data
try:
attributes = response._attribute_map # type: ignore # pylint: disable=protected-access
d_attrs = {}
for attr, attr_desc in attributes.items():
# Check empty string. If it's not empty, someone has a real "additionalProperties"...
if attr == "additional_properties" and attr_desc["key"] == "":
continue
raw_value = None
# Enhance attr_desc with some dynamic data
attr_desc = attr_desc.copy() # Do a copy, do not change the real one
internal_data_type = attr_desc["type"].strip("[]{}")
if internal_data_type in self.dependencies:
attr_desc["internalType"] = self.dependencies[internal_data_type]
for key_extractor in self.key_extractors:
found_value = key_extractor(attr, attr_desc, data)
if found_value is not None:
if raw_value is not None and raw_value != found_value:
msg = (
"Ignoring extracted value '%s' from %s for key '%s'"
" (duplicate extraction, follow extractors order)"
)
_LOGGER.warning(msg, found_value, key_extractor, attr)
continue
raw_value = found_value
value = self.deserialize_data(raw_value, attr_desc["type"])
d_attrs[attr] = value
except (AttributeError, TypeError, KeyError) as err:
msg = "Unable to deserialize to object: " + class_name # type: ignore
raise DeserializationError(msg) from err
additional_properties = self._build_additional_properties(attributes, data)
return self._instantiate_model(response, d_attrs, additional_properties)
def _build_additional_properties(self, attribute_map, data):
if not self.additional_properties_detection:
return None
if "additional_properties" in attribute_map and attribute_map.get("additional_properties", {}).get("key") != "":
# Check empty string. If it's not empty, someone has a real "additionalProperties"
return None
if isinstance(data, ET.Element):
data = {el.tag: el.text for el in data}
known_keys = {
_decode_attribute_map_key(_FLATTEN.split(desc["key"])[0])
for desc in attribute_map.values()
if desc["key"] != ""
}
present_keys = set(data.keys())
missing_keys = present_keys - known_keys
return {key: data[key] for key in missing_keys}
def _classify_target(self, target, data):
"""Check to see whether the deserialization target object can
be classified into a subclass.
Once classification has been determined, initialize object.
:param str target: The target object type to deserialize to.
:param str/dict data: The response data to deserialize.
:return: The classified target object and its class name.
:rtype: tuple
"""
if target is None:
return None, None
if isinstance(target, str):
try:
target = self.dependencies[target]
except KeyError:
return target, target
try:
target = target._classify(data, self.dependencies) # type: ignore # pylint: disable=protected-access
except AttributeError:
pass # Target is not a Model, no classify
return target, target.__class__.__name__ # type: ignore
def failsafe_deserialize(self, target_obj, data, content_type=None):
"""Ignores any errors encountered in deserialization,
and falls back to not deserializing the object. Recommended
for use in error deserialization, as we want to return the
HttpResponseError to users, and not have them deal with
a deserialization error.
:param str target_obj: The target object type to deserialize to.
:param str/dict data: The response data to deserialize.
:param str content_type: Swagger "produces" if available.
:return: Deserialized object.
:rtype: object
"""
try:
return self(target_obj, data, content_type=content_type)
except: # pylint: disable=bare-except
_LOGGER.debug(
"Ran into a deserialization error. Ignoring since this is failsafe deserialization", exc_info=True
)
return None
@staticmethod
def _unpack_content(raw_data, content_type=None):
"""Extract the correct structure for deserialization.
If raw_data is a PipelineResponse, try to extract the result of RawDeserializer.
if we can't, raise. Your Pipeline should have a RawDeserializer.
If not a pipeline response and raw_data is bytes or string, use content-type
to decode it. If no content-type, try JSON.
If raw_data is something else, bypass all logic and return it directly.
:param obj raw_data: Data to be processed.
:param str content_type: How to parse if raw_data is a string/bytes.
:raises JSONDecodeError: If JSON is requested and parsing is impossible.
:raises UnicodeDecodeError: If bytes is not UTF8
:rtype: object
:return: Unpacked content.
"""
# Assume this is enough to detect a Pipeline Response without importing it
context = getattr(raw_data, "context", {})
if context:
if RawDeserializer.CONTEXT_NAME in context:
return context[RawDeserializer.CONTEXT_NAME]
raise ValueError("This pipeline didn't have the RawDeserializer policy; can't deserialize")
# Assume this is enough to recognize universal_http.ClientResponse without importing it
if hasattr(raw_data, "body"):
return RawDeserializer.deserialize_from_http_generics(raw_data.text(), raw_data.headers)
# Assume this enough to recognize requests.Response without importing it.
if hasattr(raw_data, "_content_consumed"):
return RawDeserializer.deserialize_from_http_generics(raw_data.text, raw_data.headers)
if isinstance(raw_data, (str, bytes)) or hasattr(raw_data, "read"):
return RawDeserializer.deserialize_from_text(raw_data, content_type) # type: ignore
return raw_data
def _instantiate_model(self, response, attrs, additional_properties=None):
"""Instantiate a response model passing in deserialized args.
:param Response response: The response model class.
:param dict attrs: The deserialized response attributes.
:param dict additional_properties: Additional properties to be set.
:rtype: Response
:return: The instantiated response model.
"""
if callable(response):
subtype = getattr(response, "_subtype_map", {})
try:
readonly = [
k
for k, v in response._validation.items() # pylint: disable=protected-access # type: ignore
if v.get("readonly")
]
const = [
k
for k, v in response._validation.items() # pylint: disable=protected-access # type: ignore
if v.get("constant")
]
kwargs = {k: v for k, v in attrs.items() if k not in subtype and k not in readonly + const}
response_obj = response(**kwargs)
for attr in readonly:
setattr(response_obj, attr, attrs.get(attr))
if additional_properties:
response_obj.additional_properties = additional_properties # type: ignore
return response_obj
except TypeError as err:
msg = "Unable to deserialize {} into model {}. ".format(kwargs, response) # type: ignore
raise DeserializationError(msg + str(err)) from err
else:
try:
for attr, value in attrs.items():
setattr(response, attr, value)
return response
except Exception as exp:
msg = "Unable to populate response model. "
msg += "Type: {}, Error: {}".format(type(response), exp)
raise DeserializationError(msg) from exp
def deserialize_data(self, data, data_type): # pylint: disable=too-many-return-statements
"""Process data for deserialization according to data type.
:param str data: The response string to be deserialized.
:param str data_type: The type to deserialize to.
:raises DeserializationError: if deserialization fails.
:return: Deserialized object.
:rtype: object
"""
if data is None:
return data
try:
if not data_type:
return data
if data_type in self.basic_types.values():
return self.deserialize_basic(data, data_type)
if data_type in self.deserialize_type:
if isinstance(data, self.deserialize_expected_types.get(data_type, tuple())):
return data
is_a_text_parsing_type = lambda x: x not in [ # pylint: disable=unnecessary-lambda-assignment
"object",
"[]",
r"{}",
]
if isinstance(data, ET.Element) and is_a_text_parsing_type(data_type) and not data.text:
return None
data_val = self.deserialize_type[data_type](data)
return data_val
iter_type = data_type[0] + data_type[-1]
if iter_type in self.deserialize_type:
return self.deserialize_type[iter_type](data, data_type[1:-1])
obj_type = self.dependencies[data_type]
if issubclass(obj_type, Enum):
if isinstance(data, ET.Element):
data = data.text
return self.deserialize_enum(data, obj_type)
except (ValueError, TypeError, AttributeError) as err:
msg = "Unable to deserialize response data."
msg += " Data: {}, {}".format(data, data_type)
raise DeserializationError(msg) from err
return self._deserialize(obj_type, data)
def deserialize_iter(self, attr, iter_type):
"""Deserialize an iterable.
:param list attr: Iterable to be deserialized.
:param str iter_type: The type of object in the iterable.
:return: Deserialized iterable.
:rtype: list
"""
if attr is None:
return None
if isinstance(attr, ET.Element): # If I receive an element here, get the children
attr = list(attr)
if not isinstance(attr, (list, set)):
raise DeserializationError("Cannot deserialize as [{}] an object of type {}".format(iter_type, type(attr)))
return [self.deserialize_data(a, iter_type) for a in attr]
def deserialize_dict(self, attr, dict_type):
"""Deserialize a dictionary.
:param dict/list attr: Dictionary to be deserialized. Also accepts
a list of key, value pairs.
:param str dict_type: The object type of the items in the dictionary.
:return: Deserialized dictionary.
:rtype: dict
"""
if isinstance(attr, list):
return {x["key"]: self.deserialize_data(x["value"], dict_type) for x in attr}
if isinstance(attr, ET.Element):
# Transform value into {"Key": "value"}
attr = {el.tag: el.text for el in attr}
return {k: self.deserialize_data(v, dict_type) for k, v in attr.items()}
def deserialize_object(self, attr, **kwargs): # pylint: disable=too-many-return-statements
"""Deserialize a generic object.
This will be handled as a dictionary.
:param dict attr: Dictionary to be deserialized.
:return: Deserialized object.
:rtype: dict
:raises TypeError: if non-builtin datatype encountered.
"""
if attr is None:
return None
if isinstance(attr, ET.Element):
# Do no recurse on XML, just return the tree as-is
return attr
if isinstance(attr, str):
return self.deserialize_basic(attr, "str")
obj_type = type(attr)
if obj_type in self.basic_types:
return self.deserialize_basic(attr, self.basic_types[obj_type])
if obj_type is _long_type:
return self.deserialize_long(attr)
if obj_type == dict:
deserialized = {}
for key, value in attr.items():
try:
deserialized[key] = self.deserialize_object(value, **kwargs)
except ValueError:
deserialized[key] = None
return deserialized
if obj_type == list:
deserialized = []
for obj in attr:
try:
deserialized.append(self.deserialize_object(obj, **kwargs))
except ValueError:
pass
return deserialized
error = "Cannot deserialize generic object with type: "
raise TypeError(error + str(obj_type))
def deserialize_basic(self, attr, data_type): # pylint: disable=too-many-return-statements
"""Deserialize basic builtin data type from string.
Will attempt to convert to str, int, float and bool.
This function will also accept '1', '0', 'true' and 'false' as
valid bool values.
:param str attr: response string to be deserialized.
:param str data_type: deserialization data type.
:return: Deserialized basic type.
:rtype: str, int, float or bool
:raises TypeError: if string format is not valid.
"""
# If we're here, data is supposed to be a basic type.
# If it's still an XML node, take the text
if isinstance(attr, ET.Element):
attr = attr.text
if not attr:
if data_type == "str":
# None or '', node is empty string.
return ""
# None or '', node with a strong type is None.
# Don't try to model "empty bool" or "empty int"
return None
if data_type == "bool":
if attr in [True, False, 1, 0]:
return bool(attr)
if isinstance(attr, str):
if attr.lower() in ["true", "1"]:
return True
if attr.lower() in ["false", "0"]:
return False
raise TypeError("Invalid boolean value: {}".format(attr))
if data_type == "str":
return self.deserialize_unicode(attr)
return eval(data_type)(attr) # nosec # pylint: disable=eval-used
@staticmethod
def deserialize_unicode(data):
"""Preserve unicode objects in Python 2, otherwise return data
as a string.
:param str data: response string to be deserialized.
:return: Deserialized string.
:rtype: str or unicode
"""
# We might be here because we have an enum modeled as string,
# and we try to deserialize a partial dict with enum inside
if isinstance(data, Enum):
return data
# Consider this is real string
try:
if isinstance(data, unicode): # type: ignore
return data
except NameError:
return str(data)
return str(data)
@staticmethod
def deserialize_enum(data, enum_obj):
"""Deserialize string into enum object.
If the string is not a valid enum value it will be returned as-is
and a warning will be logged.
:param str data: Response string to be deserialized. If this value is
None or invalid it will be returned as-is.
:param Enum enum_obj: Enum object to deserialize to.
:return: Deserialized enum object.
:rtype: Enum
"""
if isinstance(data, enum_obj) or data is None:
return data
if isinstance(data, Enum):
data = data.value
if isinstance(data, int):
# Workaround. We might consider remove it in the future.
try:
return list(enum_obj.__members__.values())[data]
except IndexError as exc:
error = "{!r} is not a valid index for enum {!r}"
raise DeserializationError(error.format(data, enum_obj)) from exc
try:
return enum_obj(str(data))
except ValueError:
for enum_value in enum_obj:
if enum_value.value.lower() == str(data).lower():
return enum_value
# We don't fail anymore for unknown value, we deserialize as a string
_LOGGER.warning("Deserializer is not able to find %s as valid enum in %s", data, enum_obj)
return Deserializer.deserialize_unicode(data)
@staticmethod
def deserialize_bytearray(attr):
"""Deserialize string into bytearray.
:param str attr: response string to be deserialized.
:return: Deserialized bytearray
:rtype: bytearray
:raises TypeError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
return bytearray(b64decode(attr)) # type: ignore
@staticmethod
def deserialize_base64(attr):
"""Deserialize base64 encoded string into string.
:param str attr: response string to be deserialized.
:return: Deserialized base64 string
:rtype: bytearray
:raises TypeError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
padding = "=" * (3 - (len(attr) + 3) % 4) # type: ignore
attr = attr + padding # type: ignore
encoded = attr.replace("-", "+").replace("_", "/")
return b64decode(encoded)
@staticmethod
def deserialize_decimal(attr):
"""Deserialize string into Decimal object.
:param str attr: response string to be deserialized.
:return: Deserialized decimal
:raises DeserializationError: if string format invalid.
:rtype: decimal
"""
if isinstance(attr, ET.Element):
attr = attr.text
try:
return decimal.Decimal(str(attr)) # type: ignore
except decimal.DecimalException as err:
msg = "Invalid decimal {}".format(attr)
raise DeserializationError(msg) from err
@staticmethod
def deserialize_long(attr):
"""Deserialize string into long (Py2) or int (Py3).
:param str attr: response string to be deserialized.
:return: Deserialized int
:rtype: long or int
:raises ValueError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
return _long_type(attr) # type: ignore
@staticmethod
def deserialize_duration(attr):
"""Deserialize ISO-8601 formatted string into TimeDelta object.
:param str attr: response string to be deserialized.
:return: Deserialized duration
:rtype: TimeDelta
:raises DeserializationError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
try:
duration = isodate.parse_duration(attr)
except (ValueError, OverflowError, AttributeError) as err:
msg = "Cannot deserialize duration object."
raise DeserializationError(msg) from err
return duration
@staticmethod
def deserialize_date(attr):
"""Deserialize ISO-8601 formatted string into Date object.
:param str attr: response string to be deserialized.
:return: Deserialized date
:rtype: Date
:raises DeserializationError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
if re.search(r"[^\W\d_]", attr, re.I + re.U): # type: ignore
raise DeserializationError("Date must have only digits and -. Received: %s" % attr)
# This must NOT use defaultmonth/defaultday. Using None ensure this raises an exception.
return isodate.parse_date(attr, defaultmonth=0, defaultday=0)
@staticmethod
def deserialize_time(attr):
"""Deserialize ISO-8601 formatted string into time object.
:param str attr: response string to be deserialized.
:return: Deserialized time
:rtype: datetime.time
:raises DeserializationError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
if re.search(r"[^\W\d_]", attr, re.I + re.U): # type: ignore
raise DeserializationError("Date must have only digits and -. Received: %s" % attr)
return isodate.parse_time(attr)
@staticmethod
def deserialize_rfc(attr):
"""Deserialize RFC-1123 formatted string into Datetime object.
:param str attr: response string to be deserialized.
:return: Deserialized RFC datetime
:rtype: Datetime
:raises DeserializationError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
try:
parsed_date = email.utils.parsedate_tz(attr) # type: ignore
date_obj = datetime.datetime(
*parsed_date[:6], tzinfo=datetime.timezone(datetime.timedelta(minutes=(parsed_date[9] or 0) / 60))
)
if not date_obj.tzinfo:
date_obj = date_obj.astimezone(tz=TZ_UTC)
except ValueError as err:
msg = "Cannot deserialize to rfc datetime object."
raise DeserializationError(msg) from err
return date_obj
@staticmethod
def deserialize_iso(attr):
"""Deserialize ISO-8601 formatted string into Datetime object.
:param str attr: response string to be deserialized.
:return: Deserialized ISO datetime
:rtype: Datetime
:raises DeserializationError: if string format invalid.
"""
if isinstance(attr, ET.Element):
attr = attr.text
try:
attr = attr.upper() # type: ignore
match = Deserializer.valid_date.match(attr)
if not match:
raise ValueError("Invalid datetime string: " + attr)
check_decimal = attr.split(".")
if len(check_decimal) > 1:
decimal_str = ""
for digit in check_decimal[1]:
if digit.isdigit():
decimal_str += digit
else:
break
if len(decimal_str) > 6:
attr = attr.replace(decimal_str, decimal_str[0:6])
date_obj = isodate.parse_datetime(attr)
test_utc = date_obj.utctimetuple()
if test_utc.tm_year > 9999 or test_utc.tm_year < 1:
raise OverflowError("Hit max or min date")
except (ValueError, OverflowError, AttributeError) as err:
msg = "Cannot deserialize datetime object."
raise DeserializationError(msg) from err
return date_obj
@staticmethod
def deserialize_unix(attr):
"""Serialize Datetime object into IntTime format.
This is represented as seconds.
:param int attr: Object to be serialized.
:return: Deserialized datetime
:rtype: Datetime
:raises DeserializationError: if format invalid
"""
if isinstance(attr, ET.Element):
attr = int(attr.text) # type: ignore
try:
attr = int(attr)
date_obj = datetime.datetime.fromtimestamp(attr, TZ_UTC)
except ValueError as err:
msg = "Cannot deserialize to unix datetime object."
raise DeserializationError(msg) from err
return date_obj