Twin Class

The state information for a device or module. This is implicitly created and deleted when the corresponding device/ module identity is created or deleted in the IoT Hub.

Inheritance

msrest.serialization.Model

Twin

Constructor

Twin(*, device_id: str = None, module_id: str = None, tags=None, properties=None, etag: str = None, version: int = None, device_etag: str = None, status=None, status_reason: str = None, status_update_time=None, connection_state=None, last_activity_time=None, cloud_to_device_message_count: int = None, authentication_type=None, x509_thumbprint=None, capabilities=None, device_scope: str = None, parent_scopes=None, **kwargs)

Parameters

Name	Description
device_id Required	str The unique identifier of the device in the identity registry of the IoT Hub. It is a case-sensitive string (up to 128 char long) of ASCII 7-bit alphanumeric chars, and the following special characters {'-', ':', '.', '+', '%', '_', '#', '*', '?', '!', '(', ')', ',', '=', '@', ';', '$', '''}.
module_id Required	str The unique identifier of the module in the identity registry of the IoT Hub. It is a case-sensitive string (up to 128 char long) of ASCII 7-bit alphanumeric chars, and the following special characters {'-', ':', '.', '+', '%', '_', '#', '*', '?', '!', '(', ')', ',', '=', '@', ';', '$', '''}.
tags Required	dict[str, object] The collection of key-value pairs read and written by the solution back end. They are not visible to device apps. They keys are UTF-8 encoded, case-sensitive and up-to 1KB in length. Allowed characters exclude UNICODE control characters (segments C0 and C1), '.', '$' and space. The values are JSON objects, up-to 4KB in length.
properties Required	TwinProperties The desired and reported properties of the twin.
etag Required	str The string representing a ETag for the device twin, as per RFC7232.
version Required	<xref:long> The version for the device twin including tags and desired properties
device_etag Required	str The string representing a ETag for the device, as per RFC7232.
status Required	str or <xref:protocol.models.enum> The enabled status of the device. If disabled, the device cannot connect to the service. Possible values include: 'enabled', 'disabled'
status_reason Required	str The reason for the current status of the device, if any.
status_update_time Required	datetime The date and time when the status of the device was last updated.
connection_state Required	str or <xref:protocol.models.enum> The connection state of the device. Possible values include: 'Disconnected', 'Connected'
last_activity_time Required	datetime The date and time when the device last connected or received or sent a message. The date and time is sepecified in ISO8601 datetime format in UTC, for example, 2015-01-28T16:24:48.789Z. This value is not updated if the device uses the HTTP/1 protocol to perform messaging operations.
cloud_to_device_message_count Required	int The number of cloud-to-device messages sent.
authentication_type Required	str or <xref:protocol.models.enum> The authentication type used by the device. Possible values include: 'sas', 'selfSigned', 'certificateAuthority', 'none'
x509_thumbprint Required	X509Thumbprint The X509 thumbprint of the device.
capabilities Required	DeviceCapabilities
device_scope Required	str The scope of the device.
parent_scopes Required	list[str] The scopes of the upper level edge devices if applicable. Only available for edge devices.

Keyword-Only Parameters

Name	Description
device_id Required
module_id Required
tags Required
properties Required
etag Required
version Required
device_etag Required
status Required
status_reason Required
status_update_time Required
connection_state Required
last_activity_time Required
cloud_to_device_message_count Required
authentication_type Required
x509_thumbprint Required
capabilities Required
device_scope Required
parent_scopes Required

Methods

as_dict	Return a dict that can be JSONify 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 azure 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.
validate	Validate this model recursively and return a list of ValidationError.

as_dict

Return a dict that can be JSONify 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=True, key_transformer=<function attribute_transformer>, **kwargs)

Parameters

Name	Description
key_transformer	<xref:function> A key transformer function.
keep_readonly	Default value: True

Returns

Type	Description
dict	A dict JSON compatible object

deserialize

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

deserialize(data, content_type=None)

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
	An instance of this model

Exceptions

Type	Description
DeserializationError if something went wrong

enable_additional_properties_sending

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)

from_dict(data, key_extractors=None, content_type=None)

Parameters

Name	Description
data Required	dict A dict using RestAPI structure
content_type	str JSON by default, set application/xml if XML. Default value: None
key_extractors	Default value: None

Returns

Type	Description
	An instance of this model

Exceptions

Type	Description
DeserializationError if something went wrong

is_xml_model

is_xml_model()

serialize

Return the JSON that would be sent to azure 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=False, **kwargs)

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

validate

Validate this model recursively and return a list of ValidationError.

validate()

Returns

Type	Description
list	A list of validation error