Python SDK, how to use feeds_api.create_feed_document()

[hobbsd]

I'm struggling to figure out how to get this method to work. The code and code docs are not very readable/pythonic. Isn't the required argument body supposed to be the content of your JSON feed?

The docstring in the code says, :param CreateFeedDocumentSpecification body: Specifies the content type for the createFeedDocument operation. (required), which suggests to me a string like 'application/json' (and the CreateFeedDocumentSpecification does specify string), but that seems wrong. Following the function calls, later in the code it says body is :param body: Request body, and then further along :param body: request json body, for 'application/json'. Further along there is a json.dumps(body), so body should probably start out as a dict to be converted to JSON before transmitting. But called either with body as a JSON string or as a dict, and the server returns:

    {
      "code": "InvalidInput",
      "message": "One or more required parameters missing",
      "details": "contentType;"
    }

And the function doesn't allow for a content_type or contentType argument -- it looks like the function sets that in the headers itself. Has anyone gotten this to work?

[mafge]

HI @hobbsd,
thanks for reaching out!
Your got it almost right, however you need to specify a charset as well as part of the content type. For json content, you can try:
application/json; charset=UTF-8
Hope this answers your question.
Best,
Marc
Selling Partner Developer Services

[hobbsd]

Thanks for responding @mafge! Could you give an example of how to call feeds_api.create_feed_document()? The function takes one required argument, body (what's the type?), and can also take the optional boolean, asynq_req. So how do you set application/json; charset=UTF-8? And why is there a need to set the content-type when Amazon only accepts JSON?

[mafge]

@hobbsd This is how the code should look like:

feeds_api.create_feed_document(CreateFeedDocumentSpecification('application/json; charset=UTF-8'))

[hobbsd]

I see, so you'd need something like:
from spapi.models.feeds_v2021_06_30 import CreateFeedDocumentSpecification, CreateFeedSpecification
And the call
response = feeds_api.create_feed_document(CreateFeedDocumentSpecification('application/json; charset=UTF-8'))
would then return a CreateFeedDocumentResponse, which is accessed like response.feed_document_id and respose.url, which you'd use for a call to feeds_api.create_feed(CreateFeedSpecification()).

How does the JSON feed data get submitted?

[mafge]

@hobbsd The JSON feed data is simply uploaded to the url provided in the response from the createFeedDocument operation. Please have a look at the sample code for Java provided in the documentation, it should be similar for Python.