Django integration: You cannot access body after reading from request's data stream

[Audiopolis]

How do you use Sentry?

Sentry Saas (sentry.io)

Version

2.0.1

Steps to Reproduce

Environment info:
django=5.0.4
djangorestframework=3.15.1

1. Add sentry integration to django app:

if ENV != "development":
    sentry_sdk.init(
        dsn="https://....ingest.sentry.io/6010199",
        integrations=[
            DjangoIntegration(
                transaction_style="url",
                middleware_spans=True,
                signals_spans=True,
                cache_spans=False,
            )
        ],
        debug=DEBUG,  # This is true in this case
        send_default_pii=True,
        environment=ENV,
    )

2. `logger.exception("This is an exception")
3. See traceback

Expected Result

Either the exception is successfully logged to Sentry, or it's not sent to Sentry at all since it's a log entry and not an unhandled exception.

Actual Result

# Traceback for the `logger.exception` call goes here

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/django/__init__.py", line 555, in parsed_body
    return self.request.data
           ^^^^^^^^^^^^^^^^^
AttributeError: 'ASGIRequest' object has no attribute 'data'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/django/asgi.py", line 56, in asgi_request_event_processor
    DjangoRequestExtractor(request).extract_into_event(event)
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/_wsgi_common.py", line 96, in extract_into_event
    parsed_body = self.parsed_body()
                  ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/django/__init__.py", line 557, in parsed_body
    return RequestExtractor.parsed_body(self)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/_wsgi_common.py", line 142, in parsed_body
    return self.json()
           ^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/_wsgi_common.py", line 154, in json
    raw_data = self.raw_data()
               ^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sentry_sdk/integrations/django/__init__.py", line 538, in raw_data
    return self.request.body
           ^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/http/request.py", line 328, in body
    raise RawPostDataException(
django.http.request.RawPostDataException: You cannot access body after reading from request's data stream

[szokeasaurusrex]

Hi @Audiopolis, I attempted to reproduce your issue using this code, but I did not observe the error message that you reported.

Can you please clarify how exactly you encountered this issue? If possible, please share a reproduction with me (you can also do so by opening a PR on my reproduction repo and sharing a link to the PR here).

[Audiopolis]

@szokeasaurusrex Thanks for trying. I will try to create a reproduction. In the meantime, I'll clarify how I encountered the issue:

We send an email from a Django view using Resend. In this environment, Resend does not recognize the domain, so it throws an error. We catch that error and use logger.exception(...) instead, where logger = logging.getLogger(__name__). The view returns a 201 response. Then, the exact traceback I added to this issue description is printed.

The original request is automatically converted from an ASGIRequest (no data attribute, and can only read body once) to a RES framework Request (has a cached data property) by REST framework. I don't know how Sentry gets the original ASGIRequest instead of the DRF Request, but since it does, it makes sense that 'ASGIRequest' object has no attribute 'data' and You cannot access body after reading from request's data stream. I will have to analyze the situation more closely and provide a reproduction.