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CorsRule Class

CORS is an HTTP feature that enables a web application running under one domain to access resources in another domain. Web browsers implement a security restriction known as same-origin policy that prevents a web page from calling APIs in a different domain; CORS provides a secure way to allow one domain (the origin domain) to call APIs in another domain.

Constructor

CorsRule(allowed_origins: List[str], allowed_methods: List[str], **kwargs: Any)

Parameters

Name Description
allowed_origins
Required
list(str)

A list of origin domains that will be allowed via CORS, or "*" to allow all domains. The list of must contain at least one entry. Limited to 64 origin domains. Each allowed origin can have up to 256 characters.
allowed_methods
Required
list(str)

A list of HTTP methods that are allowed to be executed by the origin. The list of must contain at least one entry. For Azure Storage, permitted methods are DELETE, GET, HEAD, MERGE, POST, OPTIONS or PUT.

Keyword-Only Parameters

Name Description
allowed_headers
list(str)

Defaults to an empty list. A list of headers allowed to be part of the cross-origin request. Limited to 64 defined headers and 2 prefixed headers. Each header can be up to 256 characters.
exposed_headers
list(str)

Defaults to an empty list. A list of response headers to expose to CORS clients. Limited to 64 defined headers and two prefixed headers. Each header can be up to 256 characters.
max_age_in_seconds
int

The number of seconds that the client/browser should cache a preflight response.

Methods

as_dict

Return a dict that can be serialized using json.dump.

Advanced usage might optionally use a callback as parameter:

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.
deserialize

Parse a str using the RestAPI syntax and return a model.
enable_additional_properties_sending
from_dict

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)
is_xml_model
serialize

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.

as_dict

Return a dict that can be serialized using json.dump.

Advanced usage might optionally use a callback as parameter:

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.

as_dict(keep_readonly: bool = True, key_transformer: ~typing.Callable[[str, ~typing.Dict[str, ~typing.Any], ~typing.Any], ~typing.Any] = <function attribute_transformer>, **kwargs: ~typing.Any) -> MutableMapping[str, Any]

Parameters

Name Description
keep_readonly
bool

If you want to serialize the readonly attributes

Default value: True
key_transformer
<xref:function>

A key transformer function.

Returns

Type Description
dict

A dict JSON compatible object

deserialize

Parse a str using the RestAPI syntax and return a model.

deserialize(data: Any, content_type: str | None = None) -> Self

Parameters

Name Description
data
Required
str

A str using RestAPI structure. JSON by default.
content_type
str

JSON by default, set application/xml if XML.

Default value: None

Returns

Type Description
Self

An instance of this model

Exceptions

Type Description
DeserializationError

if something went wrong

enable_additional_properties_sending 

enable_additional_properties_sending() -> None

from_dict

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)

from_dict(data: Any, key_extractors: Callable[[str, Dict[str, Any], Any], Any] | None = None, content_type: str | None = None) -> Self

Parameters

Name Description
data
Required
dict

A dict using RestAPI structure
key_extractors
<xref:function>

A key extractor function.

Default value: None
content_type
str

JSON by default, set application/xml if XML.

Default value: None

Returns

Type Description
Self

An instance of this model

Exceptions

Type Description
DeserializationError

if something went wrong

is_xml_model 

is_xml_model() -> bool

serialize

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.

serialize(keep_readonly: bool = False, **kwargs: Any) -> MutableMapping[str, Any]

Parameters

Name Description
keep_readonly
bool

If you want to serialize the readonly attributes

Default value: False

Returns

Type Description
dict

A dict JSON compatible object

Attributes

allowed_headers

The comma-delimited string representation of the list of headers allowed to be part of the cross-origin request.

allowed_headers: str

allowed_methods

The comma-delimited string representation of the list HTTP methods that are allowed to be executed by the origin.

allowed_methods: str

allowed_origins

The comma-delimited string representation of the list of origin domains that will be allowed via CORS, or "*" to allow all domains.

allowed_origins: str

exposed_headers

The comma-delimited string representation of the list of response headers to expose to CORS clients.

exposed_headers: str

max_age_in_seconds

The number of seconds that the client/browser should cache a pre-flight response.

max_age_in_seconds: int