Size Calculation for ShadowState

[flashbanger]

Describe the feature

Hello,

it would be nice if a get_size()-Method can be implemented into the ShadowState-Class(es).

The maximum size for Device-Shadow-Documents is usually limited in AWS IoT-Tenants. I would like to check on the device if a created shadow will superseed this known limit before sending it to the Core. Therefore it would be beneficial to have a function returning the actual size of the Device-Shadow-Document.

Best wishes,

flashbanger

Use Case

To split the shadow into multiple shadows in case it will exceed the size limit for a single Device-Shadow-Document

Proposed Solution

get_size() -> int

Method that returns the size of the Shadow-Document in Bytes.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

SDK version used

1.22.2

Environment details (OS name and version, etc.)

Debian Bullseye

[bretambrose]

It may not be 100% precise, but I think you could just call to_payload on the ShadowState and then call json.dumps on the result?